New technologies for the improvement and development of laser welding

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Joke Shock Flashlight – China Manufacturer
Thank you for inquiry my Joke Shock Flashlight, Tel: 86-0577-86573661, E-mail: wzsldz@laserkeychain.com
http://www.laserkeychain.com/key-joke-shock-flashlight-37/

 Following technologies will help expand the scope of application of laser welding and to improve the laser welding automatic control of level l. Fill wire laser welding Laser welding is generally not filler wire, but the butt assembly space demanding, sometimes difficult to ensure that the actual production, limits its scope of application. The filler wire laser welding can greatly reduce the requirements for assembly space. Such as plate thickness 2mm aluminum plate, such as not using the filler wire, sheet gap must be zero in order to get a good forming such as using the φ1.6mm the wire as the filler metal, even if the gap increased to 1.0mm, can also ensure that the weld good shape. In addition, the filler wire can also adjust the chemical composition or slab multi-pass welding. Beam rotating laser welding so that the rotation of the laser beam welding method can greatly reduce the weldment assembly and beam requirements. For example, in the docking of 2mm thick high-strength alloy steel plates, allow the right slit assembly gap increases from 0.14mm to 0.25mm; 4mm thick plate, from 0.23mm increased to 0.30mm. Alignment of the beam center and the center of the weld to allow the error to increase from 0.25mm to 0.5mm.
      
      3. Online detection of laser welding quality and control of the detection by plasma light, sound, the charge signal of the laser welding process in recent years has become a hot topic of research at home and abroad, a few research has reached the extent of the closed-loop control. Figure 1 is an instance of the laser welding quality inspection and control system. The system used sensors and their functions briefly described as follows: (l) of plasma monitoring sensor 1) plasma optical sensor (PS): its role is the acquisition of the characteristics of the plasma light – ultraviolet letter. 2) plasma charge sensor (PCS); use the nozzle to do the probe to detect the potential difference between the nozzle and the workpiece, the formation of plasma charged particles (positive ions, electrons) of the uneven diffusion. (2) system features 1) to identify the laser welding process is the manner in which Stable deep penetration process, plasma, PS, PCS signals are very strong; stable thermal conductivity welding process does not produce the plasma, PS, PCS signal is almost zero; mode instability welding process, the plasma generated intermittently and disappear corresponding to the PS, the PCS signal intermittently rise and fall. 2) diagnosis of transmission to the welding area of ??the laser power is normal. Certain other parameters, the strength of the PS and PCS signals incident to the power corresponding to the size of the welding zone. Monitor PS and PCS signals can be optical system, the power of the welding zone fluctuations. 3) The nozzle height is automatically tracked. PCS signal decreases with increasing distance of the nozzle – workpiece. Take advantage of this law for closed-loop control can guarantee the nozzle – the same working distance, and automatic tracking of a high degree of direction. 4) focus position automatic optimization and closed-loop control. The deep penetration within the fluctuations of the beam focus position, the PS receiver to the plasma optical signals also change, to the best focus position (the minimum holes deepest) PS signal. The basis for the discovery of this rule, the focus position can be achieved automatic optimization and closed-loop control, the focus position fluctuation is less than 0.2mm penetration depth fluctuations of less than 0.05mm.

 

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2012 crusher market demand from the development of railway construction

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mobile crusher plant – China Manufacturer
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http://www.enchuangxin.com/key-mobile-crusher-plant-15/

In recent years, China\\ s processing infrastructure construction investment, high-speed railway construction is booming. Works to the railway construction machinery, such as a box crusher, jaw crusher, hammer crusher, sand and gravel equipment has provided a broad space for development. Crusher market trends in 2012, we can do the following prediction.
    Of course the market does not mean sell all brands of construction machinery, stone crusher, stone production line, sand and gravel equipment, the face of the tight time schedule, and high construction standards of railway construction projects, only to meet market demand, the performance of good quality equipment in order to win the trust of the market.

    First of all, the broken equipment to yield advantage is obvious. Collie Rick box crusher, hammer the life by 4-6 times, and each pay the hammer broken stone of 3-4 million tons, a broken a major breakthrough in truly achieve a multiplier effect, and has unique ability of ultra-large piece of stone eroded broken.

    Secondly, broken equipment broken be broken than large, uniform particle size. Collie Rick PC series hammer crusher, hammer of the work, the use of new technology casting, wear and impact resistance; hammer to break the seal body structure, to solve the problem of dust pollution and the body leakage gray broken workshop.

    Finally, broken equipment, stable performance, low cost. Collie Rick PE series jaw crusher, with a big crushing ratio, even granularity, simple structure, reliable operation, easy maintenance, operating costs and economic characteristics. Therefore, the Department of crusher is widely used in many sectors of mining, smelting, building material, highway, railway, and other various materials crushing compression strength not more than 320 MPa.

    It is reported that the largest railway passenger dedicated line north of Harbin City, Heilongjiang Province, south of Dalian City, Liaoning Province, runs through the three northeastern provinces, a total length of 904 km for two-way electrified railway is an important part of the Beijing-Harbin Railway Passenger Dedicated Line. It is understood that about 102 million yuan per km cost of the large railway passenger line, which is the Northeast has built the most expensive railway construction projects in the construction of a railway. Harbin-Dalian passenger dedicated line length of 904 kilometers of stone production line, crusher equipment demand is very large.

    Faced with the development opportunities brought about by the high-speed railway, gearing up to put a more human and material resources in the development and production of the crusher, to promote their products, perfect service, expected gains more high-speed railway construction and other large construction projects Collie Rick and more. Excellent quality, excellent brand quality, to win the favor of the crusher market.

 

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Zhongshan City two years after the LED output value will exceed 200 million

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led par lamps – China Manufacturer
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Recently, the Provincial Science and Technology Department and the municipal government signed a framework agreement, plans to invest 200 million yuan in three years, new clothes, or the transformation of the city part of the trunk LED high led panel light power white light street lamps 50000, a total length of 650 km road section. Strive to 2012 the city\\ s LED industry output value reached 500 billion yuan, becoming the province and the country green lighting demonstration. Witness under the leadership of the Provincial Department of Science and Technology Minister Li Xinghua, deputy secretary, acting mayor Xue Xiaofeng Ye Jing, deputy director of the Provincial Department of Science and Technology map and Wei Zhan, Deputy Mayor Stuart on behalf of the two sides signed. He Zhen Zhang, the city government Secretary led panel light General, presided over the signing ceremony.

Zhongshan LED output value will exceed 200 million

    The city has to develop  led strips green lighting of Guangdong Province, the model city construction and implementation of programs will be planned, step led panel light by led panel light step to promote the demonstration project in a phased manner. During the year, the plan to install 10000 installation township including the Siu Lam, town, Torch Development Zone, Banfu, Triangle and Center City; 2011 plan to install 15000, install the township to increase the port, the public; third stage plan to install 25000, install the township to increase the cross bar, Dongfeng, the three townships.

    Demonstration project total investment of about 200 million yuan to 4000 yuan / light. City will take financial inputs + financing investment in EMC  led bulb  Energy Management Contract led spotlight    mode to solve this problem, the fiscal investment by 25%, invest 75% financing. According to the implementation of the program, the city this year will invest 40 million yuan in 2011 to invest 60 million yuan in 2012 to invest 100 million yuan. Expected after the city\\ s green lighting of the LED street lamp demonstration project implementation, the annual electricity savings of 18.36 million yuan, saving 20.3 million kWh of electricity to drive the city\\ s industrial added output value of 20 billion yuan, LED emerging industries will become the city\\ s new economic growth point. To achieve the goal of the green lighting of the city  led strips , the city has built the world lighting industry patent data services platform, LED products, public innovation service platform and the formation of the semiconductor industry, the Technology Alliance and the Semiconductor Industry Association, accelerate the development of semiconductor lighting industrial clusters to promote industrial chain localized benign development.

    It is reported that the LED industry in our city in recent years the rapid development of the output value of 6.5 billion yuan in 2009, LED industry output in the first half of 2010 was an increase of more than 120%, reaching 7.2 billion yuan, industrial chain covering the LED packaging, LED new materials, high led panel light end applications. modern services industry chain gradually to the development of highly profitable LED upstream industry.

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“China Aluminum Cup fifth non-ferrous metals industry skills prize winner of the style

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Copper Alloy Welding Wire – China Manufacturer
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http://www.hzdayang.com/copper-alloy-welding-wire/

 In December 2011, the grand prize winner of China Aluminum Cup fifth non-ferrous metals industry skills through the expert review will assess. Recently, the China Nonferrous Metals Industry Association winners give recognition.

    In order to speed up the training a large number of excellent quality and superb, skilled workers, vigorously publicize advanced deeds of outstanding skilled workers and craftsmen, in recognition for the enterprise, the outstanding skilled personnel have made outstanding contributions to the industry in the national non-ferrous metals industry. In accordance with the spirit of the seven orders issued by the People\\ s Republic of China Ministry of Labor and Social Security \"China skill Awards and the National Technical experts named in recognition of the Measures for the Administration, the China Nonferrous Metals Industry Association decided to carry out the term of non-ferrous metals industry since 2003, a biennial experts and skills grand prize winner selected in recognition of activities. China Nonferrous Metals Industry Association was established named in recognition of the Leading Group, non-ferrous metal industry Occupational Skill Testing Center (co-located with the centers of the Nonferrous Metals Industry) organization and implementation of selection in recognition of activities. As of now, to carry out the 5th selection in recognition of activities, were selected out of 223 non-ferrous metal industry technical experts, 50 (10 each) and large non-ferrous metals industry skills

    Ding Xiaoliang, born June 17, 1973, under the Yunnan Metallurgy Group Co., Ltd. Yunnan Aluminum Co., Ltd. work in October 1996, the Yunnan Aluminum Co., Ltd. Electrolytic Plant electrolysis engineers. In aluminum electrolytic work for 17 years, Comrade Ding Xiaoliang mindful of, and learn, to devote themselves to work, continuing to explore the technological innovation for the company in the development, application of advanced scientific and technological achievements into practical productive forces to make a positive contribution.

    Has been engaged in aluminum electrolytic work, Comrade Ding Xiaoliang read at home and abroad a large number of professional books on the aluminum smelting and technology literature, reading notes and tips to experience more than a dozen records; as first-line workers, he deeply aware of the importance of operating quality, in order to skilled aluminum electrolysis operation, he took the initiative to start learning from the most difficult fishing block positions, overalls, gloves, helmets, baked countless bad, finally, he mastered all operating technologies for aluminum electrolytic positions, from an ordinary aluminum electrolytic workers quickly grow into the aluminum electrolytic experts in.

    2005 to 2009, he participated in the \"reduce the cell voltage swing time, improve Al99.85 grade rate\", \"reduce anode effect coefficient QC results are achieved good results, and was named the Yunnan Province of outstanding quality management team for the enterprise and Benefit more than 500 million, fully reflects the value of enterprise development.

    Ma Yuping since 1991 to participate in the Jinchuan Group Co., Ltd. has been engaged in laboratory analysis, has assumed the intermediate material, the analysis of metal purchased raw materials, product analysis and sponge titanium, etc., she has participated in many technology research projects and national industry standards development and revision of work. More than a decade, she served as team leader of the material group, material group, group team during his tenure, she was good at uniting expertise in the organization, led by team members innovative, successful completion of the laboratory analysis tasks, where the team repeatedly Jinchuan honorary title. Individual consecutive number of excellent performance and a series of honors.

    Ma Yuping treat work enthusiasm persistent, assiduously and meticulously. Start from the first day of the factory, her hard work and practice analysis skills, tireless study of theoretical knowledge, and soon come to the fore in the post of laboratory analysis. Frequently represented the the Jinchuan companies to participate in the competition; has participated in the formulation and revision of the national industry standard. She is responsible for the revised national standards cobalt oxalate, chloride ion analysis methods \", won the third prize of colored standard committee; involved in repair to develop the industry standard\" curing cobalt concentrate in cobalt; participated in the drafting of national standards. \" high titanium slag, rutile titanium dioxide, iron, manganese, silicon, phosphorus, aluminum oxide, calcium oxide, magnesium oxide and ICP determination of chromium, vanadium, manganese, phosphorus, calcium, magnesium; participated in the drafting of national standards ilmenite, titanium dioxide, iron, silicon, phosphorus, aluminum oxide, calcium oxide, magnesium oxide, determination of work; involved in the nonferrous metals industry standard high-nickel matte analysis of the revised standard; involved in the drafting of the immigration of Gansu Province Inspection and Quarantine, \"the high content of cobalt in steel samples by potentiometric titration\"; involved in the establishment and improvement of the purchased raw materials.

    Liu Guoan, born in October 1968, Zhuzhou Smelter Group Co., Ltd lead smelter (Zhuzhou Smelter lead smelting factory) in 1987 allocated sintering Section, since 1994 as a sintering Section S1A monitor. Industry for 24 years, Liu Guoan down to earth, dedication, hard of theoretical knowledge, and worked hard skills, to pay unimaginable hard work and sweat, and actively participate in technological improvements, technology research, enterprises are facing difficult times of financial crisis for enterprises to reduce tens of millions of dollars to make a positive contribution to the cost of production.

    Liu Guoan hustle in the production line, and accumulated a wealth of experience in the implementation and promotion of the batching operation of law, \"he concluded,\" the two advanced operation method of \"high-temperature calcination process, lead system with the processing of zinc slag processing laid the foundation, creating a huge economic and environmental benefits. Plum blossom from the bitter cold, 24 years of hard work, Liu Guoan finally the vanguard of an ordinary operation of the workers grow the production of crude lead, also received many honors, Liu Guoan brought the team has won the company a \"model team \",\" advanced team \"model workers home and branch\" star team \"and other honorary titles; 2004 promoted to sinter roasting technician; In 2007, he was promoted to senior technician roasting for sintering; 2005 won the\" non-ferrous metals industry technical experts 2011 was awarded the title of \"\\ China Chalco Cup\\ fifth non-ferrous metals industry skills grand prize winner\" of the title.

    Wu Shaozhi, 40 years old, Communist Party members, the Baotou Aluminum (Group) Co., Ltd. power plant, director of the power supply repair shop.

    Electrolytic aluminum production equipment, large-scale development of the industry trend, clad aluminum 400 kA electrolysis series put into production, clad aluminum entered in this field, while the constant current control technology is to achieve the safe operation of power supply system in this area core technology. Clad aluminum supply steady flow technology in the industry technology leader, but at a higher level to achieve transcendence, the difficulty is still large. Wu Shaozhi devoted great effort in the work, the use of the knowledge, combined with their own mastery of cutting-edge technology for the power supply rectifier, together with other technical staff to this new technology research and development work. Without any experience and precedent, Wu Shaozhi bold vision, innovative thinking, rigorous confirmation of trial and error, has experienced a failure and compare notes, and finally break through the problems, so that the power supply rectifier technology onto an important step The, Baolv since mastered the high-power precision digital steady flow control technology.

    Du Qingsong, born May 19, 1971, 1991 to participate in work, Baiyin Nonferrous Group Co., northwest of lead and zinc smelter roasting workshop welder senior technicians.

    In the 20 years of work, Du Qingsong comrades to write a contemporary industrial workers, self-taught, the persistent pursuit of music. He taught himself welding technology, gas welding and cutting, welder process and the boiler and pressure vessel welding technology such as a large number of professional and technical books, often in their spare time with the technology of waste practice and test a variety of steel weldability constantly explored, and in each welding process and lessons learned, through his tireless efforts and learning, has mastered the pressure welding repair, cast iron cold welding, dissimilar structural welding, and other highly technical, and explore the use of low hydrogen type electrode (507) instead of expensive special pure nickel electrode (cast 308) new technologies, new processes of welding and copper welding. Over the past few years, he submitted to the workshop a number of rationalization proposals, and participate in the fluidized cooler, the number of transformation of the boiler circulating pump demineralized water and cooling towers. For their own technical knowledge, Du Qingsong never conservative, always for the sake of corporate Wherever he went, his side of the operating side to explain, without reservation, to teach skills to coworkers. Under his influence, the workers around the techniques, practice the skills of a thick atmosphere.

    Wang Jianmin, 1978, was born in the Dangchang County, Gansu Province, graduated from Gansu Metallurgical Industry School in June 1998 the smelting professional, in January 2009, graduated from Central South University, Metallurgical Engineering, July 1998, the Aluminum Corporation of China Qinghai Branch of the second electrolysis plant so far. In January 2008, he joined the Communist Party of China, light metal smelting engineers, is now the Mayor of Qinghai Branch of the second electrolysis plant workshop 2 work area work, the second electrolysis plant area engineer. More comprehensive grasp of the aluminum electrolytic production technology, is an aluminum electrolytic craftsmen and experts in the daily management of. 14 years, has trained more than 10 outstanding team leader.

    Beginning in 2000, Wang Jianmin has served as workshop leader, squad leader, working head of office in his setting an example, he is responsible for managing the work area, the number of annual primary aluminum production surpassed production in more than 50 tons and the branch issued plan targets compared to a year to create efficiency by more than 100 million, among the best in the work area of ??the second electrolysis plant 8 has played an exemplary role. To work since Wang Jianmin actively involved in a variety of new technologies, the dissemination and application of new technology, including intelligent fuzzy control technology upgrades, coke preheating experiment, the electrolyser 160 kA expansion to the transformation of 180 kA, the anode to protect the carbon ring test electrolyzer low effect of production, low alumina concentration test, the lower the test of the electrolysis temperature production techniques and new electrolyzer of industrial application of technological innovation have been successful, and the general promotion of Qinghai Branch of the aluminum, and achieved good economic benefits.

    Zhao Yu thick, was born in 1975, Northeast Light Alloy Co., Ltd. special material extrusion workshop 5000 tons hydraulic press S1A master manipulator, a senior technician. 1995, light technical school graduate, the Zhaoyu thick with a better vision, came to the Northeast Light Alloy Co., Ltd., in the ordinary extrusion work positions, one thousand is more than a decade, and now 37 years old, he has moved from being an only know work hard apprentices to grow into a bold thinking and innovative knowledge-based industrial workers.

    More than a decade, Zhao Yu thick to study diligently and assiduously, the theoretical level and operational skills quickly come to the fore in the team, became the main production and technical backbone of the unit, won the unanimous approval of the leaders and comrades. For each alloy in the production operation, the production process of each specification, he should be carefully studied, careful pondering, especially in new product testing process, it is from start to finish, do a good job tracking problems analysis in a timely manner with team members and technical staff, in-depth study to find out the reasons, did not miss every process and production processes, until the problem-solving.

    Zhao Jing, was born in May 1974 to work in September 1995, the technician occupational qualification Mianchi ore crushing plant in Henan Branch of China Aluminum Co., Ltd. in the excavator driver. Since participate in the work, he has been engaged in the operation of surface mining equipment, which mainly undertakes the the Mianchi mine broken shop down mine.

    Zhao Beijing for many years living in the production line, more than ten years as one day, at work conscientiously, dutifully. Old excavator from the beginning to the later Carter, Volvo and other advanced mining equipment, he can through a variety of business training, learning, strive to improve their practical ability for new devices, equipment, take good care of there on time its inspection, adjustment, fastening, good hygiene, and add oil as required, and on quality, quantity, and a comprehensive maintenance to the equipment on a regular basis. Equipment during the operation, always use their own technical expertise, to complete some of the others is difficult to complete the work. Encountered devices abnormal, he can not only exclude themselves from the hydraulic shovel engine failure, but also a positive and professional maintenance staff complement and propose a reasonable flow of recommendations and the correct approach to allow the equipment to be fixed in the short period of time, the equipment long-term in good condition, always on time over complete production tasks assigned by superior. Down ore loading, based on actual experience, the equipment platform capacity than the other operators in the post increased by 20 percent, he brought the class, class size, pour the amount of ore an average of more than 2000 tons, to create the economy of the last million benefits, for the completion of each year for the amount of ore to make a significant contribution. He not only assiduously expertise, but also focus on the training of young workers. He compiled the pre-equipment operation inspection and maintenance approach to the material, with team members to analyze the exchange. Zhao Jing also good at repair old. In the production process of practice, he found Bucket excavators stones wear too fast, in order to extend the life of the bucket, he used scrap rail reasonable cut reinforced bucket, its strong and wear-resistant than steel reinforcement bucket life expectancy by 30%, strengthening a bucket will be able to save cost of 2000 yuan, and made a great contribution to the cost savings. Zhao Jing in work proficiency in the performance of equipment, especially the operation of hydraulic excavators, agile and accurate in place.

    Peng Guijia, born in 1958, Jinchuan Group copper smelter 30 years as one day, love and dedication, and selfless devotion, known as the \"walking dictionary of copper electrolysis system, the flag of technological innovation\". Team leader, squad leader, operations head of more than 30 years, Peng Guijia from an electrolytic copper operatives, a step-by-step growth; grow into outstanding party members, advanced producers, model workers; growth for copper, lead, zinc hydrometallurgy technician, senior technicians and super technician.

    30 years, Peng Guijia has participated in a large plate of copper electrolysis plant transformation, 150,000 tons of copper and 200,000 tons of copper and 200,000 tons of new copper electrolysis Rebuilding the four key reconstruction project engineering; annual output from 20,000 tons of copper cathode increased to 600,000 tons, the whole production process; copper cathode pass rate from 88% to 97% of the whole process; copper cathode current density increased from 180 security / square meter to 280 amp / square meters of the whole production process; copper cathode from standard copper to the whole process of high purity copper cathode; copper electrolyte purification optimize the induced decopperization process, saving the cost of raw materials, \"Optimization of electrothermal vaporization processes, reduce energy consumption, improve the efficiency of Removal of Ni\" and a number of great significance to the technology reconstruction project, made a significant contribution to the rapid development of Jinchuan copper cathode. The Peng Guijia both be creative and good at summing up, in the production practice, linking theory with practice and explore the the \"Peng Guijia copper electrolysis advanced operation of law. The promotion of the operating method, so that the copper cathode pass rate has remained at around 97% current efficiency was maintained at about 98%. Over the years he proposed to the enterprise feasible, less investment, quick rationalization proposals more than 100 implementation of piecemeal reform more than 100 positions, the real solution to the production of practical problems, but also create economic benefits for the enterprise . Veteran of 30 years, Peng Guijia trained to have a unique technique, known as the copper electrolytic production of expert technicians and copper refining authority.

    Hanzhong Qing, born in October 1965, the Communist Party members, has been working since December 1986, has been engaged in carbon roasting thermostat work, incumbent Aluminum Corporation of China Henan Branch Carbon Works roasting a workshop thermostat processes. senior technician.

    Hanzhong Qing comrades proactive in learning and work, in 2008, he received the company\\ s reward training opportunities to the Kunming University of Science and Technology studies, studies during the Han Zhongqing study hard, study hard, and achieved better results, but also in his spare time , studied the carbon expertise so that their level of expertise will be further improved. Work linking theory with practice, to apply their knowledge, the knowledge used in the production line. Continuously improve their professional quality at the same time, he also attaches great importance to improving the quality of staff as a whole, without reservation, to impart to the young workers do a good job of instructors with only the mass, help with work, and actively develop the technical backbone to strengthen the positions training, has greatly inspired the enthusiasm of staff learning, a good learning atmosphere up and down in his lead, and under the influence of the thermostat process, more than 90% the proportion of senior workers. At work, Comrade Han Zhongqing continued with reality, for piecemeal reform has achieved good results. As long thermostat processes, he boldly took the lead to implement the main, the Vice tone responsibility system, the implementation of the survival of the fittest in the process, and achieved good results. Focus on management to ensure production at the same time, always pay attention to product quality, the phenomenon of high individual sample values ??of the resistivity of carbon anodes in 2010, the establishment of the research team to develop countermeasures, and to take measures so that the temperature pass rate rose to more than 90% Product physical and chemical indicators of the quality and technical requirements. Hanzhong Qing comrades everywhere to set an example at work, in the urgent, difficult, insurance, re-work, always washed first, and dry in the former, both commanders and combatants, dedicated, hard working, excluding time, without remuneration, and everywhere in order to Party members of the standards themselves, the progressiveness of Party members, consciousness and selfless dedication, helpful spirit in him to be fully reflected.

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Central air-conditioning fan coil characteristics of the presentation and selection of reference

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air vent register – China Manufacturer
Thank you for inquiry my air vent register, Tel: +86-512-68188280, Email: factory@found-hvac.com
http://www.foundation-hvac.com/key-air-vent-registers-676/

      With the continuous improvement of high-end offices, the office environment, the air conditioning system more widely and deeply into daily life. How to make the choice of air-conditioning system to play the best results, in addition to the rationality of the design, but also more and more caused by the field engineers thinking.
    fan coil units in many public places as central air conditioning system terminal device, widely used, its main features are as follows:
    First, since unit and flexible adjustment. Fan coil for the 3-gear, and waterway system may be set according to the user at room temperature the situation and take automatic control of hot and cold water temperature control valve adjustment, so that each room can be adjusted independently at room temperature, to meet different use of air conditioning customers\\ needs, the room when people use a manual shutdown or automatic timed shutdown, and allows developers to avoid the time investment is too large, easy rolling development, opening a different room occupancy customers. Thereby reducing the running costs of the system as a whole.
    The entire system partition control more easily divided into several regions according to different customer needs, you can press toward the room, floor, purpose, use the time to partition the control, thus avoiding the high winds Road system must focus on control of the irrational side.
    Fan coil body is small, flexible layout, easy to install, occupy less building space, easy with the built-in construction. How the different needs of the owners, combined with the design drawings to choose a good fan coil applied to the actual project should take full account of the following points:
    A cold check
    In general, the cooling load calculation to select the product, but should pay attention to the different way of fresh air supply can cause the fan coil load cooling capacity. New wind is directly sent through the external walls of the room without the hydrothermal process, the cooling capacity of the fan coil = indoor cooling load + new air-cooled load; when the establishment of an independent air system, the fan coil cooling capacity = cold indoor loads. Products in the market, are generally nominal cooling capacity and the actual operation of cooling capacity is the average running time in the cold quantity x unit of time, that is to change the running time or amount of wind will affect the input cooling capacity of the unit. So not the nominal cooling capacity the higher the better, If only the selected unit by high cooling capacity, cooling capacity is too large, resulting in low starting rate, reduced the number of ventilators, room temperature gradient increase, will increase the system capacity and investment in equipment, air-conditioning energy consumption has increased, reducing the effectiveness of air conditioning. Cooling capacity only as a necessary condition for sorting equipment, should also take into account other factors.
    2, the wind amount of checking
    Room quality, check the number of ventilators. The smaller the air temperature difference, the more the number of ventilators, the better the air quality, more comfortable, why do some air-conditioned room feel there is odor, stuffiness, is the amount of wind did not deal with checking. Nominal air flow of the fan coil is the determination of the conditions of unreasonable water, air pressure difference of zero, so there are some unrealistic factors actually determine the amount of wind is the wind in this part should be the ideal state money deducted by the empirical estimates, this part of the addition of air flow should be accounted for 20-30% of the nominal amount of wind.
    3, send the return air way
    Sent back to the wind the way that the formation of the so-called air distribution is reasonable or not directly affect the air-conditioned room temperature field, velocity field uniformity and stability, namely, air-conditioning effect is good or bad. Reasonable air distribution requires a certain amount of air speed to avoid airflow short circuit, to ensure that the jet length. The wind speed depends on the external static pressure, air supply outlet, and other factors. External static pressure is too low will lead to the decrease of wind with a range of lower room Enthusiasm, the design of air distribution and the actual operation of state there is a big difference on the graph, it should according to the actual building structure, the structure of the room, depth, height, etc., select a mid-air volume, the corresponding wind speed indicators to select the fan coil model. Fan coil units on the market from various manufacturers machine static pressure value is no uniform calibration, the difference, coupled with the upper part of the site is the horizontal dark installed group, external short duct, filter, forward, back style gate resistance value is larger, and therefore determine the value selected for the external static pressure 30Pa, and some rooms even choose the units of external static pressure 50Pa machine than conventional the 20Pa about resistance value, so in the actual operation in the actual ordering to ensure a good uniform field to achieve the desired air withered effect.
    4, other factors
    a. The noise level is controlled at below 40dB fan coil noise is too large, the installation of the muffler treatment plant resistance is not greater than 10Pa.
    and b. Installation, construction quality attention to the insulation quality of condensate water discharge, slope aspect, pipe fittings, the system is clean.
    (c) Set horizontal or vertical system of the water system, part of the site use the vertical system, the better to ensure that emissions of condensate, a room-storey requirements.
    In short, in a reasonable and timely co-ordination of the design and construction personnel, the fan coil system would avoid the drawbacks of the more selection, to obtain satisfactory effect.

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conveyor driven by the rapid transport of the industrial areas of

 
   Conveyor with screw conveyor loading point anti-crushing technology. Shanxi Coal Colliery spiral chute lump coal depot and anti-crushing principle successfully developed out bifurcation spiral chute used in the Coal Mine coal washing plant 501 # belt conveyor, cyclone conveyor technology applications to the loading point, open up screw conveyor technology to new application areas mouth of the plant in accordance with the actual situation of the scene summed up the high pick coal law, and to improve the use of the spiral chute. Conveyor to the application of super wear-resistant ceramic material. A new kind of wear-resistant materials, super wear-resistant ceramic spiral chute to greatly extend the life of the spiral chute of the main belt conveyor, slat conveyors, scraper conveyors, bucket conveyors, bucket elevator, overhead conveyors, etc. The vibrating feeder can be massive, granular material from the silo in uniform, continuous feed by the feed device. Sand and gravel production line for the crusher continuously and uniformly feed to avoid crushing machine by the clogging of the discharge port.
     The conveyor is a continuous transfer of material in a certain line material handling machinery, also known as continuous conveyor. The conveyor can be horizontal, inclined and vertical transportation, can also be composed of space transmission lines, transmission lines are generally fixed. Conveyor conveying capacity, long distance, but also in the process of conveying the same time a number of process operations, so the wide range of applications. Can be a single transmission, can also be composed of multiple horizontal or inclined conveyor system, and other transportation equipment, to meet the different arrangement of the operating line. The following Xiaobian will recommend several good quality conveyor. Hydraulic whirlpool technology in coal bunker at the bottom of the cone. Delivery devices can not solve the coal bunker at the bottom of the cone part of the anti-crushing effect of the original spiral, Shanxi Coal Colliery using the principle of the end of the cyclone cone hydraulic vortex design ambassador to the vertical drop of the coal flow through the bottom of the spiral chute slot body, perfect spiral input the anti-crushing  technology

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the definition of the pressure relief valve pressure relief valve

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Pilot Safety Valve – China Manufacturer
Thank you for inquiry my Pilot Safety Valve, Tel: 086-0574-86196509, E-mail: chairman@nbqianshou.com
http://www.qus-gasvalve.com/key-Pilot-Safety-Valve-23/

The pressure relief valve, also known as a safety valve (safety valve) according to the working pressure of the system can automatically open and close, usually installed in the closed system equipment or pipeline protection system security. , That is automatically turned on when the equipment or pipeline pressure exceeds the pressure relief valve set pressure relief to ensure that media pressure equipment and piping under the set pressure, the protective equipment and pipes, to prevent the classification of accident relief valve
The pressure relief valve structure has two categories: spring and leveraged. Spring-loaded valves and valve seat seal by a spring force. Leveraged by the force of the lever and hammer. With the large capacity needs to have a pulse pressure relief valve, also known as the pilot pressure relief valve by the pressure relief valve and auxiliary valve. When the pipe medium pressure exceeds the set pressure value, the auxiliary valve first opens, the media along the catheter into the main pressure relief valve and pressure relief valve to open, the increased media pressure is reduced. Effect
Can automatically achieve the maximum safe pressure when opened, reduce the pressure to ensure the safety of the most common is the relief valve on a pressure cooker in the home, he is a simple mechanical pressure relief, as well as heating and air conditioning systems, relief valves, water floating relief valve is in the system pressure exceeds the design requirements when pressure is released as part of the normal working of the system as a valve to edit the purposes of this paragraph, the pressure relief valve
1, accurate and safe and stable pressure remain the same, once the overpressure, the pressure relief valve to fully open the timely relief. 2, the closing speed adjustable to eliminate the pressure fluctuations. 3, the diaphragm drive mechanism to operate the hysteresis is reduced to minimum. 4, it can be installed in any location, without changing the pressure setting or removal of the pipeline can carry out maintenance and inspection.
Edit this paragraph, the pressure relief valve characteristics
1, accurate and safe and stable pressure remain the same, once the overpressure, the pressure relief valve to fully open the timely relief. 2, the closing speed adjustable to eliminate the pressure fluctuations. 3, the diaphragm drive mechanism to operate the hysteresis is reduced to minimum. 4, it can be installed in any location, without changing the pressure setting or removal of the pipeline can carry out maintenance and inspection. Pressure relief valve operation
Adjustment of the pressure relief valve opening pressure of a pressure relief valve factory, should one by one to adjust the opening pressure setting value to the user requirements. If the user asked the spring working pressure level according to the general should be the lower limit of the pressure level to adjust the factory. 2, users will be the pressure relief valve installed on equipment to be protected before installation, you must at the installation site re-adjust to meet the requirements to ensure that the pressure relief valve set pressure value. 3, in the spring working pressure level within the nameplate indicate, by rotating the adjustment screw to change the amount of compression spring, you can adjust the opening pressure. In the rotation adjustment screw until the valve inlet pressure reduced to less than 90% of the opening pressure, in order to prevent rotating the adjustment screw when the valve is driven to rotate, which damage the sealing surface. 5, in order to ensure accurate opening pressure value, should make adjustments in the medium conditions, such as medium type, temperature as close as possible to actual operating conditions. Media types to change, especially when the media accumulate state (eg, from liquid into vapor), open the pressure changes often. Operating temperature increases, the opening pressure generally decreased. Therefore, at room temperature to adjust for high temperature, room temperature, set pressure value should be slightly higher than the requirements of the opening pressure value. High to what extent the valve structure and material selection has relations should be based on the manufacturer\\ s instructions. 6, the conventional pressure relief valve for a fixed additional back pressure of the occasion, adjust the opening pressure in the examination (back pressure to atmospheric pressure), its setting value for the required opening pressure value, minus the additional back pressure value

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resolve the role of slime dryer new co-Yang plate

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grain handling – China Manufacturer
Thank you for inquiry my grain handling, Tel:86-0371-63431169 E-MAIL:ctgrain66@gmail.com
http://www.ctgrain.com/key-grain-handling-equipment-102/

         According to the nature and the specific conditions of the dried slime, Henan capacity of the Power Manufacturing Co., Ltd. to design slime dryer suitable Yang feeding device and determine the appropriate shape and layout, to ensure that the effect of the lifting machine and the hot air exchange best; slime drying of concrete, specific operating system, at the same time to ensure effective drying time for the slime dryer through the ability to create the conditions. At present, the domestic majority of slime within the dryer of lifting devices are ordinary arc lifting plate, this lifting plate structure is simple, adaptable material. However, the low dispersion of the lifting, poor uniformity, can not form an ideal material curtain. In addition, the lifting plate part of the lattice type, this lifting plate allows lifting some of the more uniform, but the slime dryer lifting plate heat variability, weld cracking, but not easy to clean and maintain, especially the application of drying sticky materials. New slime-specific modular lifting plate, Yang material point of view, the material spilled, and according to the material in the slurry dryer dryer drying area, combined to generate the actual conduct. New combination of lifting plate and rationally regulate the residence time of material in the slime dryer can accelerate the drying of the material within the slime dryer, constant speed drying and slow down drying stage, large The magnitude of increase in evaporation speed and strength, and help to improve the production of slime dryer.

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The prospects for the development of composites wood flooring

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plastic wood decking – China Manufacturer
Thank you for inquiry my plastic wood decking, TEL:+86 575 82001678, E-MAIL:sales1@wpcflooring.com
http://www.wpcdeck.net/Wood-plastic-composite-deck/

Development Goals formulated by the state in 2010, construction will become the pillar industries of China s national economy. With the development of the construction industry, interior decoration industry will have greater development, and the wood floor as one of the important materials for interior decoration will follow the development.
  It is predicted that the annual growth rate of China s wood flooring market in the future about 10% -20%. Laminate flooring, for example, to obtain more ground cover materials market due to its relatively high performance value. 2002, the laminate wpc flooring will be made a ground cover of more than 10 percent of the materials market, the total market capacity will reach 90 million square meters; 2005, laminate flooring for ground cover material more than 15 percent of the market, total market capacity can be achieved 150 million square meters. Laminate flooring in the next five years will be to maintain double-digit pace of development, which caused the price of brand war will be inevitable. The localization of the level of laminate flooring will be greatly enhanced by the degree of product localization on average less than 50% to 80%. China is a lack of wood, although the country from the macro to support manufacturers import foreign timber, timber import tariffs to zero, but with the timber-exporting countries strengthen environmental awareness and control on timber exports, timber resources, subject to certain degrees of restrictions, composite wood floor will become the development trend of the wpc wood floor.
  Engineered wood flooring in the future complex way: wood and other composite materials, high-quality hardwood and fast-growing wood composites, high-quality hardwood scraps and small diameter wood processed into specification material and composite floor, fast-growing wood processing through the modification into the floor, high-quality flooring and sub-texture sheet composite, high-quality wood and wood-based panels compound and so on. Engineered wood flooring products not only save timber resources, but also has environmental advantages. I believe that with the further development of the world trend of environmental protection, environmentally friendly wood flooring will also be faster development. In short, the long-term development strategy of national economic development and market structure on the wooden floor of the formation of a large impact and bring new opportunities; well-known international brands are also poised to borrow China s accession to wto pour into China s market; domestic small businesses will face off, and turn an unfavorable situation, strength, good management, good quality and good after-sales service enterprises and famous brands will become the market leader.

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LED car headlights thermal and light fades

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LED Lighthead – China Manufacturer
Thank you for inquiry my LED Lighthead, Tel:+86-574-82825261, Email:sales@911signal.com
http://www.911signal.com/key-LED-Lighthead-140/

As we all know, the semiconductor material at work, influenced by ambient temperature. High power LED photoelectric conversion efficiency is lower, only 10% ~ 25% of the energy into electrical energy in the course of their work, the rest of the almost converted into heat. Combined with car headlights mounted in the heat generated by the hot engine compartment, hot water tank, engine, exhaust system, LED headlamps placed in harsh environments. The heat generated by the traditional headlight bulb is much higher than the LED, the brightness of the lamp output will not change because of the heat, its thermal design focus is the average temperature within the casing design. LED light output due to heat or high temperature from the engine compartment and affect the stability of itself PN junction temperature, LED luminous flux ФV and wavelength parameters by the direct impact of the PN junction temperature will result in adverse temperature cycle luminous efficiency and life expectancy dropped sharply. LED as light source-designed heat dissipation become an important issue.

1, the cooling technology of car headlights

1.1 Passive cooling and active cooling

The usual thermal design, the welding of high-power LED circuit board is firmly fixed on the radiator. The heat generated by the LED work by conduction through the circuit board is transmitted to the better thermal conductivity of aluminum radiator. Aluminum heat sink fins and the air a large area of ??contact will be distributing the heat off. In order to effectively reduce the thermal resistance between the heat sink and the circuit board, during which fill the thermal conductivity of medium. The optional heat sink fin shape and size to meet the LED headlights design of the cooling solution. This cooling method which we call the passive cooling [2].

Active cooling is commonly used in liquid cooling, heat pipes, air-cooled, etc.. Liquid cooling liquid must be forced circulation pump driven away the heat of the radiator, the heat pipe heat transfer components that rely on high thermal conductivity in the liquid within a fully enclosed vacuum evaporation and condensation heat transfer, and neither Suitable for use of lights. Air-cooling with a lower price, simple installation, etc. is the most commonly used. The relative concentration of passive cooling radiator central region temperature, install a fan forced convection (see Figure 1), uneven to ease the heat sink temperature had a marked effect.

1.2 LED cooling channel design

Install a fan and forced convection
LEDs are soldered on a double-sided copper layer printed circuit board (PCB) [1], the underside of the LED and the PCB copper surface welding with large copper layer for heat dissipation surface for improved heat dissipation efficiency, . This is one of the most simple cooling structure [3].

In this paper, the car headlights with LED current OSRAM company power a LEUMD1W4 of [3]; die cooling design uses a more conducive to heat LE3S package [1]. This package features a larger copper alloy heat pad as a base, fixed to the base central tube core. Media stripped the insulation of the contact area of ??the LED base and aluminum plate, copper alloy base and aluminum plate in direct contact. The heat directly on the base conduction to the outside of the LED\\ s. This internal structure of the place to go between the die and the base medium to reduce the thermal resistance and, more directly export the die junction temperature
In this paper, the LED car headlights thermal path is: die → copper alloy substrate → aluminum plate → heat sink or chassis → ambient air (see Figure 2b). The LED junction temperature TJ, ambient air temperature TA, the temperature of the heat the bottom of the Ministry of Tc (TJ> Tc> TA), in the process of thermal conductivity, thermal conductivity of various materials, that is, have different thermal resistance. Die conduction to heat the thermal resistance of the bottom surface of the thermal resistance of the RJC (LED), the cooling pad conduction to the PCB surface layer of the thermal resistance of the copper layer to the RCB, the PCB conduction to the ambient air thermal resistance of the RBA, from die the total thermal resistance of the junction temperature TJ conduction to the air TA RJA RJA with the thermal resistance of the relationship as follows: RJA = RJC, the RCB and the RBA, the copper alloy substrate and the aluminum plate thermal conductivity close to the thermal resistance, thermal conductivity like that is, the better the thermal performance [2]. Reduced by nearly 26% of the total thermal resistance of the thermal structure than the conventional structure.

2, system design of the headlights environment

Due to the low flux output of the LED at this stage, only the car near the light you need the 1000lm above. Taking into account the requirements of the light distribution and stability of the electrical, optical parameters of car headlights, LED used in car headlights often need to set a few or even dozens of LED components in a module, in order to meet the headlights and regulations needed requirements. At present, the optical design for O2star [1] and X2lamp products similar package. OSTAR4chip lights dedicated LEUMD1W4 [3] single LED output luminous flux greater than 350lm 3 The LED array can meet the basic requirements of the lights 1000lm.

(1) expansion of the heat dissipation area to improve the conduction efficiency. LED car headlights low beam unit design, the three high-power LED array board in aluminum. Such a high concentration of closely spaced high-power LED heat and cooling degree of difficulty can be imagined. The test sample approach is that the aluminum plate heat sink fit closely fixed. Between filling the higher cost and easy to use thermal grease, the grease layer is cooling the key to the entire cooling system. Mainstream thermal grease thermal conductivity greater than 1W / m · K, the quality can be achieved 6W / m · K, the above test to select a higher cost thermal conductivity of 4. 4W / m · K TG2244 thermal grease.
(2) forced convection with outside air heat exchange. Install a fan in the back of the heat sink to promote the forced air flow. Fan to accelerate the heat sink of the heat exchange at the same time, the flow of air directly from the PCB took some heat. The small lamp body sealed air convection with the outside world is almost impossible. Figure 3a shows the fan forced convection air cooling structure can ease the uneven temperature radiator central area with the surrounding environment, so that the temperature within the lamp body and lamp housing as close as possible. Contribute to the internal thermal conduction through the shell and an external radiator.

(3) part of the external radiator. Installed according to the distribution of the engine compartment and the lamp body size of the radiator design of the lamp body to internal and external two parts, as shown in Figure 3b shows. External heat sink design in the upper edge of the lamp shell. Built-in LED to produce thermal conduction by the built-in heat sink to an external heat sink, and then through convection. Taking into account the light is usually moving to open the engine compartment by the strong convection air-cooled, the temperature is relatively low. Combined on the edge of the headlight shell exposed to exactly cover the gap in front of the car at the vehicle hood gap imported air flows through the external heat sink fins, and an external radiator air – cooled by air. External radiator cooling lamps played a very good cooling effect.

3, test methods and data

3.1 Test setup and equipment

According to the theory and design, data simulation, production sample of the test model and LED headlamps. Sample production requirements as close as possible to the targeted products, faster and better in order to research results into products. The body of the lamp installed LED light source for high beam, low beam lights and turn lights, position lights. Test the focus of observation is the internal temperature of the lamp to light the decline.

Test equipment for the the distant Optoelectronic Information Co., Ltd. YF1000 comprehensive analysis of light color electrical system, lights with optical automatic test system, as well as multi-point temperature detector equipment. The test points are: lamp illumination, light, LED light source temperature, the PCB temperature, heat sink temperature and the different positions of the lamp chamber temperature gradient [4]. The equipment automatically records and data preset function to verify the relationship of heat and the light fades.

3.2 The test data

Figure 4 is a LED light source, temperature and light decay curve under different cooling methods. Seen only PCB cooling, active plus passive radiator cooling and forced convection heat three different thermal design there are considerable differences. At 105 ° C for two kinds, basically to provide more than 80% of the light rate.
4, Conclusions

Elevated junction temperature of the PN junction of the LED itself, so that the LED light decline exacerbated by, the luminous efficiency are affected, shorter life expectancy. The application of LED as a light car headlights, usually more than one LED chip array design. LED headlamps in the prototype design, first of all the LED thermal design so that the junction temperature is after control, according to the operating environment of LED headlamps, power and temperature rise of the control-driven, high power LED is less than 80% of the light fades and 3000h of life to get the basic protection. LED automotive headlamp products have broad market prospects.

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