Electric heating – Metal heating – By arc
Patent
1996-05-03
1997-09-16
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
21912163, 376260, B23K 2600
Patent
active
056677065
ABSTRACT:
A laser welding apparatus and method are used to weld the inner surface of small diameter tubes such as nuclear heat exchanger tubes. A weld filler metal carried by a rotatable laser weld head is fed into the weld zone to produce deeply penetrating weldments of low profile. The apparatus and method can effectively be used to repair cracks in heat exchanger tubes to thereby provide extended service life.
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Cole William G.
Lutz Rodney A.
Pirl William E.
Ponko Frank X.
Pope Wesley G.
Evans Geoffrey S.
Maire D. G.
Westinghouse Electric Corporation
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