Laser welding seam with reduced end-crater and process for production thereof

US7290957B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Wolfgang Becker · Eppstein, DE
• Jens Bühler · Stuttgart, DE
• Tilman Froschmeier · Herrenberg, DE
• Klaus Goth · Sindelfingen, DE
• Markus Knöller · Nagold, DE
• Claus-Deiter Reiniger · Winnenden, DE
• Daniel Zauner · Langenau, DE

Key dates

• Filing date: Feb 1, 2006
• Grant date: Nov 6, 2007
• Expiry date: Feb 1, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T403/477
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A laser weld seam with reduced end crater and a process for production thereof are provided. The seam end is provided at a location, which exhibits a excessive material relative to the surrounding surface or thereby, that the seam towards the seam end exhibits a counter-running direction change of its preferred direction, which is designed in such a manner, that as a consequence of the interaction between cooling forward and counter-running seam a backfill of the melt towards the seam end occurs.