Patent · US Expired

Method for producing an opening in a metallic structural part

US6630645B2 · kind B2 · utility

16Cited by

3References

20Claims

0Family size

Assignees

MTU Aero Engines AG · DE
LASERTEC CORPORATION · JP

Inventors

Karl-Hermann Richter · Markt Indersdorf, DE
Peter Hildebrand · Pfronten, DE
Michael Kuhl · Hafenhofen, DE
Martin Reisacher · Kempten, DE

Key dates

Filing date	Nov 25, 2002
Grant date	Oct 7, 2003
Priority date	—
Expiry date	Nov 25, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T50/60
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a method of producing an aperture in a metallic component, in which the aperture comprises, at least in certain portions, a non-cylindrically formed funnel, extends from a first surface to a second surface of a component wall and is formed by a laser beam. The invention improves the dimensional accuracy and reduces the roughness of the surface of the aperture and/or funnel in that, by appropriate choice of the laser parameters, the metal is predominantly removed by sublimation during the formation of the funnel and the funnel is formed by laser removal of layers of a substantially constant thickness.

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