What are the advantages of resistance welding?

普电

What are the advantages of resistance welding?

A: the advantages of resistance welding are as follows: ① when the nugget is formed, it is always surrounded by a plastic ring, the molten metal is isolated from the air, and the metallurgical process is simple.

② The heating time is short and the heat is concentrated, so the heat affected zone is small and the deformation and stress are small. Generally, it is not necessary to arrange correction and heat treatment process after welding;

③ There is no need for filler metal such as welding wire and electrode, and welding consumables such as oxygen, acetylene and argon, so the welding cost is low;

④ It is easy to operate, easy to realize mechanization and automation, low requirement for workers' proficiency and low labor intensity;

⑤ High productivity, low noise and no harmful gas. In mass production, it can be programmed on assembly line together with other manufacturing processes, but flash butt welding needs to be isolated due to spark splashing.