Patent ID: 6621038
Filing Date: 2003-09-16
Classification: B23K,H05H

Abstract:
A torch for powder plasma buildup welding, comprising:a torch head adapted to be inserted into a pipe material of a continuous length to carry out buildup welding on an inner peripheral surface of the pipe material; and a torch body formed into a continuous length and having said torch head mounted on a distal end thereof; said torch head being replaceably connected to said torch body, wherein said torch head includes a convergent nozzle having an opening; and either said torch head or said torch body is provided with a gap formation spacer member which is abutted against the inner peripheral surface of the pipe material to keep a distance between said opening of said convergent nozzle of said torch head and the inner peripheral surface of the pipe material substantially constant during welding, wherein said torch body is provided with at least one deflection restraint spacer member adapted to be abutted against the inner peripheral surface of the pipe material so as to prevent deflection of said torch body in the pipe material during buildup welding.