Patent · US Expired

Process for the submerged-arc welding of light metals such as aluminum and aluminum alloys

US4368371A · kind A · utility

9Cited by

11References

3Claims

0Family size

Assignee

Messer Griesheim GmbH · DE

Inventors

Ulrich Dilthey · Unterschleißheim, DE
Friedrich Eichhorn · Aachen, DE
Peter Hirsch · Aachen, DE
Peter Holbach · Aachen, DE
Kurt Lettner · Steyr, AT

Key dates

Filing date	Sep 8, 1980
Grant date	Jan 11, 1983
Priority date	—
Expiry date	Sep 8, 2000

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K9/123
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A welding process for joining aluminum materials in a horizontal welding position, without preheating, this process being highly economical and characterized by minimal environmental pollution, good strength and toughness of the welded joint, in which process the arc, as in submerged arc welding of steel plates, is covered by a flux layer and burns in a closed cavity, this process being realized by the use of a flux having a flux composition of 20-70% potassium chloride (KCl), 20-70% of an alkaline earth metal chloride, preferably calcium chloride and/or magnesium chloride (CaCl.sub.2 and/or MgCl.sub.2), 1-20% of calcium fluoride (CaF.sub.2) and preferably 1-15% of a substance capable of lowering the melting point and/or releasing gas.

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