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Appl. Sci. 2017, 7(9), 909; doi:10.3390/app7090909

Laser Welding under Vacuum: A Review

State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
Authors to whom correspondence should be addressed.
Received: 10 August 2017 / Revised: 29 August 2017 / Accepted: 1 September 2017 / Published: 5 September 2017
(This article belongs to the Special Issue Solid State Lasers Materials, Technologies and Applications)
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Laser welding has been widely used in various industry fields. In order to further alter and broaden its applicability, a novel technology of laser welding under vacuum is introduced. The combination of high power laser and low ambient pressure provides an excellent welding performance and quality. In this paper, an overview on laser welding under vacuum is presented. It begins with a short introduction about the research status of laser welding under vacuum. Next, the equipment of laser welding under vacuum is introduced. Then, the fundamental phenomena of laser welding under vacuum, including penetration depth, weld geometry, plasma plume, molten pool and keyhole behaviors, are summarized in detail. Finally, the applications and prospects of laser welding under vacuum are proposed. View Full-Text
Keywords: laser welding under vacuum; ambient pressure; equipment; fundamental phenomena; application; prospect laser welding under vacuum; ambient pressure; equipment; fundamental phenomena; application; prospect

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jiang, M.; Tao, W.; Chen, Y. Laser Welding under Vacuum: A Review. Appl. Sci. 2017, 7, 909.

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