대한용접접합학회:학술대회논문집 (Proceedings of the KWS Conference)
- 대한용접접합학회 2005년도 추계학술발표대회 개요집
- /
- Pages.114-116
- /
- 2005
회주철 프레스 금형에 대한 경화육성 자동 MIG 용접시 균열 및 기공방지 기법의 개발
The development of prevention technique for crack and porosity occured during hardening overlay auto MIG welding for press die of gray cast iron
- 유광선 (부경대 대학원 소재프로세스공학과) ;
- 황재련 (현대 자동차(주) 금형기술개발팀) ;
- 김덕환 (현대 자동차(주) 금형기술개발팀) ;
- 김병훈 (현대 자동차(주) 금형기술개발팀) ;
- 황지선 (현대 자동차(주) 금형기술개발팀) ;
-
조상명
(부경대 신소재공학부 소재프로세스공학)
- Yu, Gwang-Seon ;
- Hwang, Jae-Ryeon ;
- Kim, Deok-Hwan ;
- Kim, Byeong-Hun ;
- Hwang, Ji-Seon ;
-
Jo, Sang-Myeong
- 발행 : 2005.11.17
초록
There are some problems when weld gray cast iron which is used well in automobile industry with auto MIG welding. the problems are followed like this 1) Occurrence of porosity and hardening organization. 2) Occurrence of crack due to lower elongation of gray cast iron when restraint stress works on. 3) Occurrence of porosity and unstable bead shape due to unstable arc under low current MIG welding.. especially there is a restraint on chemical composition of weld metal because the weldment demands more than 570Hv hardness. so it is hard to use Fe-Ni wire to prevent cracks occured on weldment and new welding method is needed to resolve that problems. This study shows how to prevent porosity and cracks occurring when weld gray cast iron trimming die and shows a new welding method for press die of gray cast iron
키워드