Application in laser welding industry

The high temperature generated by laser will make the molten metal pool extremely active, easily reacting with oxygen in the air to generate oxide slag, causing the weld seam to become brittle and porosity to appear. High purity nitrogen forms a local inert gas protective cover, which can effectively isolate air and avoid these problems. For example, in the sealing welding of a 0.1mm stainless steel battery case, the weld seam protected by nitrogen did not rust after the salt spray test, meeting the strict sealing requirements.