| 摘要 |
PROBLEM TO BE SOLVED: To provide a cladding device for cladding an inner surface of a cylindrical pipe W. SOLUTION: A cylindrical die 1 is abutted on an end face of a cylindrical pipe W, and a rotary tool 2 is advanced in the die 1. A large diameter portion 20 to regulate the inside diameter after cladding the cylindrical pipe W and a tapered feed screw portion 21 having a threaded groove 21a in a tip of the large diameter portion 20 are provided on a tip portion of the rotary tool 2. A rear side of a cladding member 3 is screwed to the feed screw portion 21. When the rotary tool 2 is advanced together with the die 1 while being rotated, the cladding member 3 is further threaded and moved backwardly while the die 1 is abutted on the end face of the cylindrical pipe W. The backwardly compressive force is continuously applied to the cladding member 3 through this friction resistance to generate the plastic flow. Further, a portion of the cladded-by-welding member 3 in the previous plastic flow state is cooled to form a cladded layer 3b on the inner surface of the cylindrical pipe W. COPYRIGHT: (C)2004,JPO
|
