Electric heating – Metal heating – By arc
Patent
1974-09-30
1978-02-21
Truhe, J. V.
Electric heating
Metal heating
By arc
219160, B23K 902
Patent
active
040754537
ABSTRACT:
The invention is a method of butt welding steel plates. The steel plates to be welded are placed closely adjacent to each other. A steel backing strip of segmental cross-section is placed in a recess of a heat-conductive support block and is held against one side of the steel plates while welding is carried out. Welding is carried out by an automatic process on the side of the steel plates opposite to the backing strip. Fusion of the steel plates and the backing strip occur so that all three are welded together. The heat-conductive support block is not welded to the steel plates or the backing strip and is removed.
REFERENCES:
patent: 1844263 (1932-02-01), Priebe
patent: 2331937 (1943-10-01), Schreiner
patent: 2362505 (1944-11-01), Smith
patent: 2365226 (1944-12-01), Stout
patent: 2691952 (1954-10-01), Wilson et al.
patent: 3258185 (1966-06-01), Koch et al.
patent: 3351734 (1967-11-01), Arikawa et al.
patent: 3525844 (1970-08-01), Johnson
patent: 3575574 (1971-04-01), Almqvist
patent: 3688080 (1972-08-01), Cartwright et al.
Metals Handbook, vol. 6, 8th ed., 1971, pp. 253 TA472-A3.
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