Electric heating – Metal heating – By arc
Patent
1995-06-02
1996-12-03
Shaw, Clifford C.
Electric heating
Metal heating
By arc
29 11, B23K 9173
Patent
active
055804748
ABSTRACT:
The present invention is a receiver made by a welding process. The receiver made according to this process has less net distortion because of a number of techniques used in the process, including: (1) cooling the weld with Carbon Dioxide (CO.sub.2) preheated with the welding torch tip; (2) use of not more than approximately 4% oxygen in the shield gas to enable hotter, faster welding; (3) the use of a reduced voltage and wire feed rate at the end of a weld to avoid cracking; (4) the intentional use of distortion to reduce net distortion; and (5) sequencing of welds to reduce distortion. Distortion can be introduced in the stamped parts as they are made or when placed in a fixture for welding that, when welded, have less distortion than before. Distortion can also be countered by welding parts in a sequence where a subsequent weld reduces the distortion of a previous weld.
REFERENCES:
patent: 1467502 (1923-09-01), Rose
patent: 2324775 (1943-07-01), Hentschel
patent: 2823480 (1958-02-01), Robinson, Jr.
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patent: 3199174 (1965-08-01), Nilsson et al.
patent: 4596084 (1986-06-01), Martial
patent: 4845871 (1989-07-01), Swan
patent: 5195226 (1993-03-01), Bornancini
patent: 5440099 (1995-08-01), Smith
FN Manufacturing Inc.
Shaw Clifford C.
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