Effect of laser welding technology on weld microstructure of NM500 wear resistant steel materials

Laser welding technology has entered the field of NM500 wear resistant steel processing with its unique advantages, and has opened up a new prospect for the application of NM500 wear resistant steel materials. Compared with the traditional welding method, laser welding has the following characteristics: the depth to width ratio is large, the weld is narrow, the weld bond strength is high, the heat affected zone is small, the microstructure around NM500 steel is not affected, the welding deformation is small, the welding process can be automated and the production efficiency is high.

Welding without filler ensures the continuity and consistency of NM500 wear resistant steel welds. However, the research and application of laser welding technology in the field of NM500 steel is still very limited, mainly because it is difficult to avoid the appearance of holes and holes in the welding of NM500 wear resistant steel, so that the appearance of the weld and the quality of the welding are affected.

To reduce the cost of laser welding and to carry out the basic research on laser welding, material and welding behavior of NM500 wear resistant steel material, is an important premise to popularize the application of laser welding technology in the processing of NM500 steel materials.