Apparatus for welding steel sheets

Details Apparatus for welding steel sheets Apparatus for welding steel sheets

1979-09-24

1981-12-01

Goldberg, Elliot A.

Electric heating

Metal heating

Nonatmospheric environment at hot spot

2191372, B23K 918

Patent

active

043038220

ABSTRACT:
In an apparatus for electroslag welding of steel sheets with the aid of at least one wire electrode pair, a welding gap defined between the electrodes of the electrode pair, current-carrying conduits for the electrode pair, and a supply tube for supplying metal in a powdered state, and welding flux into the welding gap, the improvement includes a shielding device creating a duct along the current-carrying conduits. The duct, owing to the shielding device, is substantially free of any magnetic field, and the supply tube is positioned in the duct.

REFERENCES:
patent: 3337712 (1967-08-01), Lucey
patent: 3352993 (1967-11-01), Suzuki
patent: 4151389 (1979-04-01), Hirsch
Eichorn et al., "Electrogas & Electroslag Multi Layers High Speed Welding of Nuclear Pressure Vessel Steel", DVS-Berichte Band, 1978, pp. 168-172.
Eichorn et al., "Use of Metal Powder Additions to Improve the Strength and Toughness of High Speed Electroslag & Electrogas Welds in Micro Alloyed & Low Alloy Steels", IIW-doc XII Weld. Inst. Aachen.
Ivochkin, "Electroslag Welding with Powdered Filler Metal", in Weld Products, Great Britain, vol. 19, #6, 6/72, pp. 29-33.

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