고장력강 파이버 레이저 용접부의 HAZ 연화 특성에 관한 연구 (A Study on HAZ Softening Characteristics of Fiber Laser Weldment for High-Strength Steel)

서지정보

· 발행기관 : 대한용접접합학회
· 수록지 정보 : 대한용접접합학회지 / 33권 / 6호 / 27 ~ 35페이지
· 저자명 : 박민호, 김일수, 이종표, 진병주, 김도형, 김인주, 김지선

초록

Laser welding sector in the automotive industry has been widely recognized as one of the most importantbonding processes, such as parts welding. Efforts to improve productivity and weld quality have beenprogressing steadily. In addition, laser welding is suitable for welding process that can produce high-qualitywelds suitable for flexible production and small quantity batch productions. In order to ensure the rigidityof the material, high strength material are applied to more than 1 GPa class body parts and automotivebumper beams. However, not only the situation is that the trend of domestic research, but also developmentis based on product molding considering freedom of shape where reinforcement is applied to meet thesafety regulations and high-speed crash performance, despite the use of high strength materials. The tendencyfor heat-affected zone (HAZ) softening phenomenon common in areas of laser welded high tensile steelwelding confirmed the occurrence of weld softening effect according to the process parameters. Based onthis, range of process parameters could be selected for ensuring weld quality.

영어초록

Laser welding sector in the automotive industry has been widely recognized as one of the most importantbonding processes, such as parts welding. Efforts to improve productivity and weld quality have beenprogressing steadily. In addition, laser welding is suitable for welding process that can produce high-qualitywelds suitable for flexible production and small quantity batch productions. In order to ensure the rigidityof the material, high strength material are applied to more than 1 GPa class body parts and automotivebumper beams. However, not only the situation is that the trend of domestic research, but also developmentis based on product molding considering freedom of shape where reinforcement is applied to meet thesafety regulations and high-speed crash performance, despite the use of high strength materials. The tendencyfor heat-affected zone (HAZ) softening phenomenon common in areas of laser welded high tensile steelwelding confirmed the occurrence of weld softening effect according to the process parameters. Based onthis, range of process parameters could be selected for ensuring weld quality.

참고자료

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