Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Decrease of Porosity and Cracking in the cw Nd:YAG Laser Welding of SM45C

SM45C의 연속파형 Nd:YAG 레이저 용접시 발생하는 기공과 결함의 감소

  • Published : 2003.10.01
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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.

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References

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