Follow the following principles when welding
①The thicker the plate, the thicker the welding wire, the greater the power, and the slower the wire feeding speed
②The lower the power, the whiter the welding surface, and the greater the power, the weld changes from color to black, and single-sided formation is formed at this time.
③The thickness of the welding wire should not be greater than the plate thickness, and the welding wire affects the fullness of the weld.
④The thinner the welding wire, the lower the scanning width.