Method and device for repairing a defective zone of the wall of

Details Method and device for repairing a defective zone of the wall of Method and device for repairing a defective zone of the wall of

1993-11-29

1995-08-22

Ramsey, Kenneth J.

Metal fusion bonding

Process

Repairing, restoring, or renewing product for reuse

228125, 427422, 72 53, 219 7616, B23P 1526, B23P 904

Patent

active

054432014

ABSTRACT:
The metal of the wall of the part (13a) in a zone which includes defects such as cracks is melted, over a defined depth, by moving over the surface of the part with the aid of a melting device (21), and then solidified. Next, a surface layer of the metal of the wall of the part (13a) which has been melted and then solidified is subjected to compression by repeated impacts of solid particles. The melting is preferably performed by a transferred-arc plasma (22) and the compression by balls set into motion by a vibrating part. The invention applies in particular to the repair of a tubular adaptor (13a) penetrating the head (1) of a nuclear-reactor vessel.

REFERENCES:
patent: 4224356 (1980-09-01), Singer
patent: 4491001 (1985-01-01), Yoshida et al.
patent: 4661682 (1987-04-01), Gruner et al.
patent: 4713882 (1987-12-01), Bianchi
patent: 4893490 (1990-01-01), Isnardon et al.
patent: 4974434 (1990-12-01), Reccius et al.
Search Report FR 92 14 407.
Abstracts of Japan JP 1062290 Mar. 1989.
Abstracts of Japan JP 3170093 Jul. 1991.

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