Patent · US Active

Method for splash-free welding, in particular using a solid-state laser

US11786989B2 · kind B2 · utility

0Cited by

1References

17Claims

0Family size

Assignee

TRUMPF LASER- UND SYSTEMTECHNIK GMBH · DE

Inventors

Patrick Haug · Dinkelsbühl, DE
Nicolai Speker · Pleidelsheim, DE
Marco Opitz · Rohrbach, DE
Tim Hesse · Ditzingen, DE

Key dates

Filing date	May 12, 2021
Grant date	Oct 17, 2023
Priority date	—
Expiry date	Dec 22, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K26/32
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Laser beam welding a workpiece includes: generating first and second beam areas on the workpiece by first and second laser beams, respectively. The beam areas are guided in a feed direction relative to the workpiece. Centroids of the beam areas are not coinciding. The first beam area runs ahead of the second beam area. A length of the first beam area, measured transversely to the feed direction, is greater than or equal to that of the second. A surface area of the first beam area is greater than that of the second. A width of the first beam area, measured in the feed direction, is greater than or equal to that of the second. A laser power of the first laser beam is greater than that of the second. The second laser beam is irradiated into a weld pool generated by the first laser beam.

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