Apparatus and method for laser deposition welding using a powdery welding material

US9364919B2 · kind B2 · utility

Assignee

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

Inventors

• Ronny Wappler · Dresden, DE
• Steffen Nowotny · Radebeul, DE
• Frank Brueckner · Dresden, DE
• Siegfried Scharek · Freital, DE
• Robert Muenster · Hamburg, DE
• Frank Kubisch · Borna, DE
• Holger Hillig · Hamburg, DE
• Friedrich Kempe · Dresden, DE

Key dates

• Filing date: Apr 18, 2011
• Grant date: Jun 14, 2016
• Expiry date: Jan 31, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K26/144
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

An apparatus and method are provided for laser deposition welding of powdery welding material. The powdery welding material is conveyed via a nozzle coaxial with respect to a laser beam directed in a focused manner with a constant focal length onto a processing region through the nozzle onto the processing region. Optical elements are arranged in a laser optical unit for the shaping and guidance of the laser beam. The laser optical unit is attached to a processing head and can be moved with the processing head parallel to the laser beam by a first drive. The plane of the focal point can thereby be changed with respect to the surface. The nozzle can be moved independently of the laser optical unit parallel to the optical axis of the laser beam by a second drive.