조선용 프라이머 코팅강판의 CO₂ 레이저 용접에 있어서 프라이머 코팅 조건과 갭(Gap) 간극의 영향

• 영문명: Effect of Primer Coating Condition and Gap Clearance in CO₂ Laser Welding of Primer-coated Steel for Shipbuilding
• 발행기관: 한국해양대학교 해사산업연구소
• 저자명: 김종도(Jong-Do Kim) 길병래(Byung-Lea Kil) 장지연(Ji-Yon Jang)
• 간행물 정보: 『해사산업연구소논문집』제16집, 59~65쪽, 전체 7쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2005.12.30

영문 초록

  The spatter and porosity could be occurred during CO₂ CW laser welding of Primer-coated steel for shipbuilding. This study has suggested an alternative idea by examining of weld-defect formation mechanism. The primer-coated plate induced the spatter, humping bead and porosity and these are main part of the welding defect, attributed to the powerful vaporizing pressure of primer attached on the base metal. The zinc of primer has a boiling point that is the lower temperature than melting point of steel. Zinc vapor will build up at the interface between the two sheets and this tends to deteriorate the quality of the weld by ejecting weld material from lap position or leaving porosity. Therefore introducing a small gap clearance in the lap position, the zinc vapor could escape through it and sound weld beads can be acquired. In conclusion, we suggested the occurred and prevented mechanism of weld defects with searching the factor.

목차

Abstract
1. 서론
2. 사용재료 및 실험방법
3. 실험결과 및 고찰
4. 결론
참고문헌

키워드

CO₂ Laser welding(CO₂레이저용접) Primer-coated steel(프라이머 코팅강판) Lap welding(겹치기용접) Weld defect(용접결함) Gap clearance(갭 간극)