레이저 열원을 이용한 마그네슘 합금의 용접성에 관한 연구

저자

김*도, 김영식, 송무근, 이정한

게재저널

대한용접접합학회지

키워드

Sand casting magnesium alloy, Pulsed Nd:YAG laser, Butt welding, Welding parameters, Underfill

개요

Magnesium has good castability and limited workability, so its products have been manufactured by almost casting processes. In this study, a pulsed Nd:YAG laser was used to butt-weld the sand casting magnesium alloys. And the effect of welding conditions such as peak power, pulse width, welding speed was evaluated in detail. As a result of this study, large underfill and plenty of spatter taken place under the conditions with high peak power. Thus, it is recommended to use low peak power and long pulse width to obtain good welds with deep penetration. It is also confirmed that the welding speed and pps(pulse per second) are directly connected at weld defects such as underfill, porosity.

첨부파일

• 20. 김영식(재료)_대한용접접합학회지(등재지).pdf [4,267,335 byte]

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