Machining head with integrated powder supply for deposition welding using laser radiation

US8129657B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Steffen Nowotny · Radebeul, DE
• Andreas Schmidt · Braunschweig, DE
• Siegfried Scharek · Freital, DE
• Tobias Naumann · Dresden, DE
• Friedrich Kempe · Dresden, DE

Key dates

• Filing date: Jul 16, 2008
• Grant date: Mar 6, 2012
• Expiry date: Nov 21, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a machining head with integrated powder supply for deposition welding using laser radiation. A machining head in accordance with the invention can in particular be used for deposition welding at a high deposition rate. In the machining head in accordance with the invention, the laser radiation is directed to supplied powder and to a material surface with a focal spot. The powder supply takes place symmetrically to the axial feed direction with a plurality of channels arranged oppositely. The channels are aligned at an obliquely inclined angle so that powder discharged from them is supplied into the focal spot of the laser radiation from two mutually oppositely disposed sides over the total width of the focal spot with respect to the axial feed direction.