Electric heating – Metal heating – By arc
Patent
1998-02-25
2000-07-04
Hoang, Tu Ba
Electric heating
Metal heating
By arc
21912148, B23K 900
Patent
active
060841966
ABSTRACT:
A nickel-base superalloy article which is susceptible to strain-age cracking and has a directionally oriented, single crystal, or equiaxed grain structure is repaired with minimal welding heat input into the article. The article is first heated to a welding temperature of from about 1650.degree. F. to about 2000.degree. F. in an inert atmosphere. A damaged area of the article is weld repaired using a plasma-transferred arc welder which vaporizes a filler metal in a plasma arc and deposited the vaporized metal onto the article to form a weld overlay. Minimal additional heat is added to the article during welding, as the weldment metal is vaporized remotely from the article.
REFERENCES:
patent: 3802938 (1974-04-01), Collins et al.
patent: 4098450 (1978-07-01), Keller et al.
patent: 4125754 (1978-11-01), Wasserman et al.
patent: 4225769 (1980-09-01), Wilkins
patent: 4285459 (1981-08-01), Baladjanian et al.
patent: 4590354 (1986-05-01), Marhic et al.
patent: 4621183 (1986-11-01), Takeuchi et al.
patent: 4663515 (1987-05-01), Kneeland et al.
patent: 4672171 (1987-06-01), Cusimano et al.
patent: 4689463 (1987-08-01), Shubert
patent: 4739146 (1988-04-01), Lindland et al.
patent: 4745256 (1988-05-01), Shubert
patent: 4808055 (1989-02-01), Wertz et al.
patent: 4822248 (1989-04-01), Wertz et al.
patent: 4878953 (1989-11-01), Saltzman et al.
patent: 4940390 (1990-07-01), Clark et al.
patent: 5080734 (1992-01-01), Krueger et al.
patent: 5725692 (1998-03-01), DeLuca et al.
"A Powder Fed Plasma Transferred Arc Process for Hard Facing Internal Combustion Engine Valve Seats" by J Milligan & S Narasimhan, Paper Series 800317, Society of Automotive Engineers, Inc., pp. 1-12.
Barber James D.
Flowers Gilbert E.
Grossklaus, Jr. Warren D.
Grubbs Gray W.
Kelly, Jr. Earl L.
General Electric Company
Gressel Gerry S.
Hess Andrews C.
Hoang Tu Ba
Van Quang
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