Patent · US Expired

Apparatus for welding steel sheets

US4303822A · kind A · utility

1Cited by

3References

2Claims

0Family size

Assignee

Friedrich Eichhorn · DE

Inventors

Peter Hirsch · Aachen, DE
Bernhard Wubbels · Borken, DE
Rolf Schafer

Key dates

Filing date	Sep 24, 1979
Grant date	Dec 1, 1981
Priority date	—
Expiry date	Sep 24, 1999

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K25/00
WIPO fieldMachine tools
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.