Process of stainless steel MIG welding wire

Characteristics of solid wire

MIG welding of stainless steel can not only achieve high efficiency, but also automation, and reduce production costs. On the basis of basic stainless steel models, some solid welding wires increase Si content to about 0.8%, such as er308si, er309si, etc., so as to produce the following effects:

1) It reduces the tension on the surface of the droplet, makes the droplet finer and makes the arc stable.

2) Improve the wettability of the deposited metal to make the weld bead ripple beautiful, prevent the defects such as incomplete penetration, slag inclusion, porosity, etc., and improve the weld forming quality.

II. Types and characteristics of commonly used protective gases

Ar inert gas has a good arc stabilizing effect, but the arc is easy to drift when it is protected by pure ar.