대한용접접합학회:학술대회논문집 (Proceedings of the KWS Conference)
- 대한용접접합학회 2007년 추계학술발표대회 개요집
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- Pages.342-344
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- 2007
표면조도처리 강판의 점용접성에 관한 고찰
The Resistance Spot Weldability of surface roughness textured cold-rolled steel sheet
- 김기홍 (동의대학교 신소재공학과) ;
- 박상순 (동의대학교 신소재공학과) ;
- 박인철 (동의대학교 신소재공학과) ;
- 김성원 (동의대학교 신소재공학과) ;
- 신병현 (동의대학교 신소재공학과) ;
- 최영민 (POSCO 기술연구소) ;
-
박영도
(동의대학교 신소재공학과)
- Kim, Gi-Hong ;
- Park, Sang-Sun ;
- Park, In-Cheol ;
- Kim, Seong-Won ;
- Sin, Byeong-Hyeon ;
- Choe, Yeong-Min ;
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Park, Yeong-Do
- 발행 : 2007.11.15
초록
The resistance spot weldability of surface textured cold-rolled steel sheet was evaluated. One steel sheet(T4.5) showed reduced electrode life with less than 2000 welds, and all other steel sheets(E2.2, E4.5, T2.2) made more than 2500 welds. The carbon imprint test revealed that there is sudden electrode diameter increase around 1700 welds. It is believed that the increased electrode diameter decreased current density, and resulted in decreasing weld electrode life due to small weld button size. It is considered that surface roughness difference may attribute to heating during weld cycle and reduced the weld electrode life.
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