- 합금화용융아연도금강판의 품질특성에 미치는 유기윤활피막의 영향
- ㆍ 저자명
- 김영근
- ㆍ 간행물명
- 한국표면공학회지
- ㆍ 권/호정보
- 2003년|36권 2호|pp.176-184 (9 pages)
- ㆍ 발행정보
- 한국표면공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
New lubricant film of organic and inorganic composite resin was developed to improve the press formability of galvannealed steel sheets (GA) for automotive body panels. The frictional coefficient of lubricant GA steel sheets is about 20% superior to that of uncoated GA. The current range of spot welding of lubricant GA is similar to that of the uncoated GA, but the burning trace of spot welding is inferior to that of the uncoated GA in the oiling condition. The alkaline degreasability of lubricant GA shows 100% in alkaline degreasing condition of automotive company. The size and shape of the phosphated coating layer are similar to those of the uncoated GA sheet. The powdering property of the lubricant GA gives rise to 20∼50% improved property compared with the uncoated GA sheet.