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Decrease of Porosity and Cracking in the cw Nd:YAG Laser Welding of SM45C  

유영태 (조선대학교 기전공학과)
오용석 (조선대학교 대학원)
노경보 (조선대학교 대학원)
신호준 (조선대학교 대학원)
임기건 (전남대학교 물리학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.10, 2003 , pp. 65-73 More about this Journal
Abstract
The effect of pre-heating on the mechanical properties of laser welding joints has been investigated for the case of SM45C carbon steel welded by a cw Nd:Y AG laser. The occurrence of porosity and cracking was inspected in various welding conditions to find the optimal welding parameters. The results of laser welding experiment with pre-heating technique showed that porosity and cracking can be reduced significantly in most of welding conditions and the welded joints have improved mechanical properties, such as higher tensile strength and better durability.
Keywords
Laser welding; Welding Condition; Hot cracking; Porosity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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