Patent · US Active

Butt welding method and friction stir welding tool

US9849541B2 · kind B2 · utility

2Cited by

2References

20Claims

0Family size

Assignee

UNIVERSITAT STUTTGART · DE

Inventors

Martin Werz · Seligenstadt, DE
Max Hossfeld · Stuttgart, DE
Oliver Volz · Stuttgart, DE

Key dates

Filing date	Sep 12, 2014
Grant date	Dec 26, 2017
Priority date	—
Expiry date	Sep 12, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K33/002
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Provided is a method and tool for butt welding a first material piece of metal to a second material piece of metal at opposed longitudinal edges. The second material piece has a greater material thickness than the first material piece. The first material piece has a higher tensile strength and/or a higher inching temperature and/or a higher yield strength and/or a higher modulus of elasticity than the second material piece. A thickened longitudinal edge is provided at the first material piece. The thickening of the longitudinal edge is at least partly produced by at least simple folding, beading or winding of the first material piece or at least partly by folding the first material piece at its edge. The two material pieces are friction-stir welded at their front along the opposed longitudinal edges.

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