저진공 레이저용접 연구 리뷰

Vacuum laser beam welding (VLBW) exhibits better welding characteristics, e.g., deep penetration, less pore, and spatter generation, compared with the conventional laser welding technique under atmospheric pressure. Low am- bient pressure affects the vaporization temperature of the base material and...

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Bibliographic Details
Published in대한용접·접합학회지 Vol. 40; no. 1; pp. 74 - 83
Main Authors 이용기(Yongki Lee), 천현필(Jason Cheon), 김철희(Cheolhee Kim)
Format Journal Article
LanguageKorean
Published 대한용접·접합학회 01.02.2022
대한용접접합학회
Subjects
기계공학
Subatmospheric pressure
Vacuum
Penetration
Molten pool
Keyhole
Laser welding
Laser-induced plume
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ISSN2466-2232
2466-2100
DOI10.5781/JWJ.2022.40.1.8

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Summary:Vacuum laser beam welding (VLBW) exhibits better welding characteristics, e.g., deep penetration, less pore, and spatter generation, compared with the conventional laser welding technique under atmospheric pressure. Low am- bient pressure affects the vaporization temperature of the base material and the interaction between laser and plasma plume, which affects the behaviors of laser-induced plasma plume, keyhole, and weld pool flow. This review in- troduces improvements in welding characteristics such as penetration depth, pore, and spatter generation in the VLBW process. The effect of ambient pressure on welding characteristics was reviewed, and the behavior of la- ser-induced plume, keyhole, and molten pool under reduced ambient pressure was discussed to understand the mechanisms for enhanced weldability. KCI Citation Count: 0
ISSN:2466-2232
2466-2100
DOI:10.5781/JWJ.2022.40.1.8