Local argon filling assembly for stainless steel pipe welding

A local argon filling assembly for stainless steel pipe welding relates to the technical field of argon protection baffles and is characterized in that a first blocking piece and a second blocking piece are matched in pairs for use, the first blocking piece comprises a rubber plate, a stabilizing plate and a fastener, the shape of the rubber plate is consistent with the section of a to-be-welded pipeline, the diameter of the rubber plate is slightly larger than the inner diameter of a pipe orifice, interference fit is formed, and a through hole is formed in the center of the rubber plate; the stabilizing plates are hard plates, the diameter of each stabilizing plate is smaller than that of the rubber plate, through holes matched with the through holes in the rubber plate are formed in the centers of the stabilizing plates, the two stabilizing plates are arranged on the front face and the back face of the rubber plate respectively, and the rubber plate and the two stabilizing plates are fixed together through