Stainless steel butt joint plasma arc automatic welding method

The invention discloses a stainless steel butt joint plasma arc automatic welding method, which comprises the steps: manufacturing a back face protection forming groove of a cladding plate, and determining the installing and fixing mode of the back face protection forming groove and the cladding plate; designing and manufacturing a thin plate welding tool clamp, and determining a clamp mounting mode, and carrying out mounting; designing and processing a cladding plate groove and an assembling gap; mounting the back face protection forming groove in the back surface of the cladding plate, and then, mounting and fixing the cladding plate; installing the welding tool clamp, determining welding process parameters through tests, and determining the type of a plasma arc nozzle; and carrying outwelding construction by utilizing automatic welding equipment. The stainless steel butt joint plasma arc automatic welding method aims to solve the problem that in the prior art, the construction efficiency of a stainless ste