Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)
- 2003.11a
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- Pages.227-229
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- 2003
Mechanical properties of fine grained steel weldments formed with low heat input
세립강 저입열 용접부의 기계적 성질
Abstract
Low heat input welding methods have been investigated in order to minimize the HAZ softening of the 600MPa grade fine grained steel weldment. The welding processes of interest were a high speed FCA welding with a multi-torch welding system, laser welding with filler feeding and hybrid laser welding. No HAZ softening was found for all the weldments formed with low heat input less than 10kJ/cm. Tensile strength of the weldments was high enough to satisfy the required value. Impact toughness of the weldments was also good even at -20
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