Patent · US Active

Method for connecting thick-walled metal workpieces by welding

US8373083B2 · kind B2 · utility

3Cited by

5References

20Claims

0Family size

Assignee

V & M DEUTSCHLAND GMBH · DE

Inventors

Steffen Keitel · Bodenwerder, DE
Jan Neubert · Leipzig, DE
Wolfgang Scheller · Oberpleichfeld, DE
Markus Liedtke · Waltrop, DE
Christian Caesar · Bottrop, DE

Key dates

Filing date	Jun 26, 2008
Grant date	Feb 12, 2013
Priority date	—
Expiry date	Jul 16, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K26/348
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for connecting thick-walled metal workpieces by welding. In order to create the weld joint, the cross-sections are provided with a maximum of three weld regions according to wall thickness, the welding being carried out by a combined use of welding methods: the first weld region (root) is welded by means of laser beam welding or hybrid laser-arc welding, the second weld region is welded by means of hybrid laser-arc welding, and the third weld region required occasionally depending on the thickness of the sheet metal is welded by means of hybrid laser-arc welding or simply arc welding. The invention also relates to a seam preparation corresponding to the respective welding method used.

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