Plant Journal (플랜트 저널)
- Volume 7 Issue 1
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- Pages.49-55
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- 2011
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- 1976-8702(pISSN)
Determination of Preheating Temperature for Box Girder Welding
강교용 박스거더의 용접예열 온도 선정에 관한 연구
- Cho, Jae-Hun (Namkwang E&C) ;
- Moon, Seung-Jae (School of Mechanical Engineering, Hanyang University) ;
- Yoo, Hoseon (Department of Mechanical Engineering, Soongsil University)
- Received : 2010.09.08
- Accepted : 2011.01.21
- Published : 2011.03.30
Abstract
This study analyzed causes and status of cracks to suggest preventives for welding cracks generated on fillet welding zone of atmosphere corrosion resisting steel box girder. Penetrant testing, a sort of non-destructive testing, was conducted for inspection of crack status on welding zone. As a result of test, welding cracks were found on the point of start, center and end to fillet welding zone of 32 mm-thickness. The result of carbon equivalent composition of materials was 0.452%. According to welding specification, to preheat prevent welding crack, preheat temperature of