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File cabinet cupboard cabinet steel welding technology trends steel cabinet welding process: 1, to improve welding productivity is an important driving force to promote the development of welding technology to improve the productivity of ways: first improve weld deposit rate, for example, three wire buried arc welding, the process parameters are 220A / 33V, 1400A40V, 1100A45V. Groove using small sections behind the bezel or liner is set, 50 to 60mm of steel penetration at once forming, welding speed can be achieved, 0.4m / min or more, the deposition rate and SMAW compared to more than 100 times The second way is to reduce the groove section and metal deposition, the most prominent achievement was narrow gap welding. Narrow gap welding using gas welding is based on the use of a single wire, double wire, three-wire welding, regardless of the joint thickness, can be butt forms, such as plate thickness of 50 ~ 300mm, the gap can be designed around 13mm, so the the required amount of deposited metal into several times, reducing the number of times, thus greatly improving productivity. Narrow weld between the main technical key is to look at how to ensure that both sides of the penetration and ensure automatic tracking arc center and in the groove center line, for the world to develop a variety of different scenarios, resulting in a variety of narrow gap welding method. Electron beam welding, plasma welding, laser welding, butt joints can be used, and do not open the groove, it is more narrow gap between the ideal welding method, which is one reason why it is widely being valued. The latest successful development of the laser hybrid welding arc welding method can improve the speed, such as 5mm of steel or aluminum, welding speeds of up to 2 ~ 3m / min, to get a good shape and quality, small welding deformation. 2. Prepare workshop to improve the mechanization and automation level is currently focused on the development direction of the world's advanced industrial countries. In order to improve productivity and quality of welded structures, only proceed from the welding process has some limitations, so pay special attention to the technological transformation of the world's workshop. The main processes include preparation plant material transport, the material surface to the oil, sand blasting, protective lacquer coating; steel marking, cutting, beveling; parts assembly and tack. The above procedure in modern factories have adopted mechanization and automation. The advantage is not only to improve the productivity of products, more important is to improve the quality of the product. 3, the welding process automation, intelligent is to improve the quality of welding stability, poor working conditions to solve an important direction. 4, the development of new industries continue to push forward welding technology. Welding technology since the invention has been a hundred years of history, it is almost all industries to meet the current needs of important product manufacturing. However, the development of new industries are still forced welding technology continues to advance. Promote the development of the microelectronics industry and the development of micro-joining process equipment; and if the development of ceramic materials and composite materials to promote the vacuum brazing, vacuum diffusion bonding. Development of aerospace technology will also promote the development of space welding technology. 5, the heat of the welding process research and development is to promote the development of the fundamental driving force. Welding process using the world almost every available source, including flame, electric arc, resistance, ultrasound, friction, plasma, electron beam, laser beam, microwave, etc. (Our main arc welding, resistance welding automated welding equipment Lord), each of which appears on the history of heat, are accompanied by the emergence of new welding process. However, since the development and research of welding heat source does not end. 6, energy-saving technology is a matter of common concern we all know, the welding energy consumption is very large, with SMAW, for example, each about 10KVA, submerged arc welding machine each 90KVA, resistance welding machines up to thousands of KVA, many new technologies appears that in order to achieve this energy efficiency goals. In resistance spot welding, the use of electronic technology, the AC into secondary rectification spot welder spot welding, the welder can improve power factor, reduce capacity welding, spot welding 1000KVA can be reduced to 200KVA, and Welding can still achieve the same effect. The emergence of inverter welding machine is another successful example, it can reduce the weight of the welder, welder improve power factor control performance ratio, has been widely used in production.