대한용접접합학회:학술대회논문집 (Proceedings of the KWS Conference)
- 대한용접접합학회 2002년도 Proceedings of the International Welding/Joining Conference-Korea
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- Pages.384-389
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- 2002
EFFECT OF FLASHING AND UPSETTING PARAMETERS ON THE FLASH BUTT WELDING OF HIGH STRENGTH STEEL
- Kim, Young-Sub (Reliability Assessment Center, RIST) ;
- Kang, Moon-Jin (Advanced Welding & Joining Technology Team, KITECH)
- 발행 : 2002.10.01
초록
This study was aimed to evaluate the weldability and optimize the welding conditions for flash butt welding of 780MPa grade steel applied to the automotive bumper reinforcement. And then the relationship between the welding conditions and the joint performance relating specifically to coil-joining steel would be established. The effect of welding conditions between flashing and upsetting process was elucidated. Microstructure observation of the joint indicated that the decarburized band was mainly changed with upsetting process. Width of HAZ was also related to the upsetting conditions rather than the flashing conditions. Generally maximum hardness at HAZ was correlated with