평면 변형 장출 시헙법(PSST)을 이용한 프레스라인에서의 성형 불량 예측

A Predication of Failure in the Stamping Line by Using the Plane Strain Stretch Test

The plane strain stretch test (PSST) developed by POSCO as an activity of customer service was applied to the establishment of the formability criteria and the prediction of failure during the stamping processes. The PSST was applied to the actual parts such as oil pan and shock mount and the criteria of PSST value for each forming parts were established. These value can provide the possibility of prediction of failure before the stamping process. These results show that the PSST can precisely predict the stamping formability of steel sheets.