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6861 |
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Wednesday, March 10, 2021, Hall 1 3:10 PM Special Materials |
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Electron beam brazing of fusion reactor heat sinks |
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Hannes Kendziora* / PTR Strahltechnik GmbH, Germany |
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The electron beam has great flexibility and can therefore be used for many different purpos-es. For example, it can be used for welding complex and critical parts. The tightly controlled heat input allows also for high speed drilling, hardening or other type of surface treatments. However, the last variant can also be used for other applications, as described below. This presentation deals with electron beam brazing, its advantages and possibilities. By means of an example, the electron beam brazing process is explained using the fast deflection. The brazing was performed on cooling plates of the fusion reactor W 7-X in Greifswald in Germany. For this purpose, the presentation briefly names the companies involved and intro-duces the Max Planck Institute for Plasma Physics with the experimental fusion facility “Wendelstein 7-X”. The question is clarified why electron beam brazing was chosen for this project and how the development led to small series production. The major challenges of this project will be dis-cussed. Based on this presentation, further possible applications of electron beam brazing can be de-rived, which will be excellent complements to conventional brazing processes. |