Invention Grant
- Patent Title: Method for laser welding end faces
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Application No.: US16487383Application Date: 2018-03-19
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Publication No.: US11358238B2Publication Date: 2022-06-14
- Inventor: Jan Stuhrmann , Christian Dahmen
- Applicant: Kirchhoff Automotive Deutschland GmbH
- Applicant Address: DE Attendorn
- Assignee: Kirchhoff Automotive Deutschland GmbH
- Current Assignee: Kirchhoff Automotive Deutschland GmbH
- Current Assignee Address: DE Attendorn
- Agency: Polson Intellectual Property Law, PC
- Agent Margaret Polson; Christopher Sylvain
- Priority: DE102017105900.8 20170320
- International Application: PCT/EP2018/056833 WO 20180319
- International Announcement: WO2018/172254 WO 20180927
- Main IPC: B23K26/16
- IPC: B23K26/16 ; B23K26/26 ; B23K26/322 ; B23K101/18 ; B23K103/04 ; B23K101/34 ; B23K103/16 ; B23K101/00

Abstract:
A method for laser welding the end faces of joints of two connecting flanges, which are held against each other, of two connecting partners made from a steel material, of which at least one is provided with a metallic coating with an evaporation temperature that is below the melting temperature of the steel material. The method is carried out such that, for the process of laser welding, the connecting flanges of the two connecting partners are held against each other enclosing an angle that opens pointing in a direction from the joint side on which the laser is applied, as a result of which a degassing gap, which increases in the direction of heat introduction, is provided between the connecting flanges, through which degassing gap evaporation products of the coating material resulting from the introduction of heat are carried off.
Information query
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