Electric heating – Metal heating – By arc
Patent
1990-02-06
1991-03-19
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21913021, B23K 910
Patent
active
050013262
ABSTRACT:
An improvement in a short circuiting arc welding apparatus of the type including a power supply for causing a welding current of different levels to pass through a welding wire extending at variable extension distances from a holder and between the wire and a workpiece at a molten metal pool on the workpiece. This improvement includes control means for maintaining a generally constant wattage in the wire during the plasma boost portion of the arcing condition as the extension distance from the holder changes. Further, the improvement involves controlling the plasma or arcing condition after a plasma boost by a current curve gradually decreasing from the plasma boost portion toward the background current level for the system.
REFERENCES:
patent: 3459920 (1969-08-01), Sevenco
patent: 3792225 (1974-02-01), Needham
patent: 3809853 (1974-05-01), Manz
patent: 4020320 (1977-04-01), Pijls
patent: 4544826 (1985-10-01), Nakanishi et al.
patent: 4546234 (1985-10-01), Ogasawara
patent: 4717807 (1988-01-01), Parks
patent: 4794232 (1988-12-01), Kimbrough et al.
patent: 4866247 (1989-09-01), Parks
A Power Source for Advanced Welding Systems, by P. Budai et al., First International Conference on Advanced Welding Systems, Nov., 1985.
A Power Source for Gas Shielded Arc Welding with New Current Wave Forms, by T. Ogasawara et al., First International Conference on Advanced Welding Systems, Nov., 1985.
Control of Short Circuiting in MIG Welding, P. Boughton et al., Welding Research International, 1974 Ed.
Patent Abstracts of Japan, vol. 10, No. 83 (M-466), [2140], Apr. 2, 1986.
Patent Abstracts of Japan, vol. 9, No. 202 (M-405), [1925], Aug. 20, 1985.
Patent Abstracts of Japan, vol. 4, No. 161 (M-40), [643], Nov. 11, 1980.
Study of Welding Arc Control in China, by J. L. Pan, 231 Welding Journal 65 (1986), Mar., No. 3, Miami, Fla. U.S.A.
European Search Report, Application Ser. No. 87302155.4, Apr. 28, 1988.
Method for Controlling Energy of "Little Bridge", Explosion in CO.sub.2 Welding, Welding Abroad, No. 1, 1981, pp. 17-20.
Shaw Clifford C.
The Lincoln Electric Company
LandOfFree
Apparatus and method of controlling a welding cycle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method of controlling a welding cycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method of controlling a welding cycle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2011843