Flux Cored Welding Wire in all positions, the continuity of the process for automated production. The main advantages of the process: (1) good quality and welding defects are usually produced in the welded joints. Equal to the diameter of the steel hand-welded under the welding head and the first few numbers more than semi-automatic, semi-automatic welding with reduced probability of defect generation. Usually the application of NR204, NR207 metal wire is a low hydrogen, while the more traditional manual welding using cellulose type electrode. It can be seen, semi-automatic welding can reduce the hydrogen content in the Welding Wire . Meanwhile, the semi-automatic welding heat input is high, may reduce the weld cooling rate, hydrogen escape, and help reduce and prevent cold cracking. Table 3 flux-cored wire from under the protection of semi-automatic reference to the welding process parameters (2) high efficiency flux cored welding process into the continuous intermittent mode of production. Semi-automatic welding deposited a large amount of less than the manual welding bead, melting faster than hand-down welding of cellulose increased by 15% to 20%. Thin welding slag, slag easily, reducing the time between layers slag. (3) integrated low cost semi-automatic welding equipment is versatile, can be used for semi-automatic welding, arc welding can also be used for welding or other welding methods. Thickness of 8.7mm steel to weld an example; manual welding welder to complete at least 3 groups, only Group 2 semi-automatic welding welders, welders at least 2 can be reduced, but also a corresponding reduction in the number of welding machine and the number of auxiliary tooling. At the same time. Effective utilization of high flux-cored wire, welding groove small, saving the amount of filler metal used, and improve the welding speed, integrated cost is only half the hand arc.
According to BMW the company's experts, when the Welding Flux, BMW has used a dual-focus laser welding technology. Because of this technology in the process of welding aluminum alloy has good performance, it is widely used in BMW's high-volume production process.
In laser welding, laser welding technology dual focus can be a very small distance between welding material to form the two focal point, enabling the laser beam splitting and stacking. Superposition of two laser light sources to form a laser beam, can greatly improve the laser power, the stability of production, product quality and production flexibility. Laser welding power increases on the one hand can increase the depth of laser welding seam; the other hand, can also increase the welding speed of laser welding; but can also avoid common Rongdong aluminum Low Alloy Steel Electrode and welding defects such as burn.