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1. 发明专利

JPH09273678A MECHANICAL PIPE COUPLING 失效
公开(公告)号：JPH09273678A
公开(公告)日：1997-10-21
申请号：JP8276096
申请日：1996-04-04
申请人： NIPPON KOKAN KK , N K K SOGO SEKKEI KK
发明人： MUROTA KAZUMASA , TANAKA TOSHIYA , YAMADA TAKAHISA , ARAI HIDETOSHI , SUZUKI NORIKAZU
IPC分类号： F16L21/08
摘要： PROBLEM TO BE SOLVED: To improve watertightness by a packing as well as to reliably perform pipe connection in a short time. SOLUTION: When an inserting pipe 11 is inserted into a socket 3, a stopper 4 projecting into the inside of the socket 3 by the action of a spring is pressed by a projecting part 1 and projected to the outside of the socket 3 against spring force. When the insertion of the inserting pipe 11 is progressed after the stopper 4 is further turned, the engagement of the projecting part 1 and the stopper 4 is released, the stopper 4 is again projected to the inside by the spring, a protrusion 8 is brought in contact with the outer peripheral surface of the socket 3, and the rotation is stopped. Since the projecting part 1 is brought in contact with the stopper 4 even if drawing force is generated on the projecting part 1, the inserting pipe 11 is prevented from slipping off from the socket 3. A packing 2 provided on the pipe end of the inserting pipe 11 is sealed in an approximately cylindrical space formed of a parallel part (a) of a receiving pipe 12 provided with the socket 3, the inserting pipe 11, and a seal stopper 13 provided on the inserting pipe 11.

2. 发明专利

JPS60216990A REPAIRING METHOD OF AUSTENITIC METALLIC PARTS 失效
公开(公告)号：JPS60216990A
公开(公告)日：1985-10-30
申请号：JP7014984
申请日：1984-04-10
申请人： NIPPON KOKAN KK , NIPPON CASTING CO LTD
发明人： TSUDA MASAYUKI , KOGA TAKEMOTO , BANBA TOSHIJI , UEMURA AKIRA , TSUTSUMI NOBUO , FURUTA TOKUSHICHI , ABE MOTOO , YAMADA TAKAHISA
IPC分类号： B23K31/00 , B23K9/04 , B23K9/235
摘要： PURPOSE:To restore the weldability and mechanical strength of a base metal for cracked austenitic metallic parts and to extend the life of the metallic parts after welding by subjecting said parts to a soln. heat treatment prior to build-up welding. CONSTITUTION:The austenitic metallic parts are subjected to the soln. heat treatment prior to welding the cracked part thereof. The cracked part is thereafter subjected to gouging, then to build-up welding. The weldability and mechanical strength of the metallic base material are restored and the cracked part is satisfactorily repaired, by which the life of the metallic parts is extended.

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