The selection of welding process method mainly depends on material type, structural design, structural stress and other factors. For welding requirements requiring higher welding speed, lower welding heat input, smaller heat affected zone (HAZ) and welding deformation, Laser welding process It usually provides an ideal solution. It can complete multiple welding processes such as compound welding, thermal conductivity welding, spot welding and deep penetration welding of stainless steel, carbon steel, gold, silver, aluminum, tool steel, nickel alloy, titanium, brass and copper through one machine.
Thick metal plate welding
Nowadays, fiber laser has been widely used in the welding of various metal thick plates. Compared with the traditional CO2 laser welding process, fiber laser welding process has obvious advantages, which is mainly due to the lower reflection coefficient of metal materials to fiber laser with wavelength of 1070 nm. High power fiber laser has obvious advantages in welding high reflection coefficient metal materials such as aluminum and copper. The high brightness characteristic of fiber laser can significantly reduce the sensitivity of welding process to focus position, so as to reduce the difficulty of realizing high-quality welding. Other application examples of optical fiber laser welding of thick plate metal materials include full penetration welding of transmission components and deep penetration welding of large thickness steel plates in shipbuilding, oil pipeline and other industries.
Sheet metal welding
Low and medium power CW fiber laser can weld all kinds of thin plates at high speed. The combination of galvanometer and long focal length lens can form a small spot size and realize remote welding, which will bring many advantages in practical operation. For example, the fiber laser remote welding workstation can complete the welding of the whole door panel; When the robot system is integrated, the welding of the whole body can be completed by lap welding or wire welding. In addition, there are sealing welding of battery pack and pressure seal ring, etc. Quasi CW fiber laser can perform pulse welding with high peak power and low average power, which is suitable for applications with low heat input. Typical applications are medical device welding, such as cardiac pacemaker, high-speed spot welding, such as blade, device welding under automobile hood, etc.
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