Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 1999.03b
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- Pages.161-164
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- 1999
Effect of Punching Conditions on the Stretch Flange Formability of Cold rolled Steels for Deep Drawing
편칭조건이 가공용 냉연강판의 신장플랜지 성형성에 미치는 영향
Abstract
In order to investigate the effect of punching condition on the stretch flange formability of sheet for deep drawing hole expansion tests at various edge condition were done. Edge conditions were changed by altering tool clearances artifical defects grinding and deburring. For a determination of optimum edge condition of side panel of automobile punched section analysis and forming results were studied and the laboratory test results were used. In case of considered side panel tool clearance should be less than 15% and punched edge should be uniform without defects for safe forming