CAJ | 학술논문

提出了一种颗粒或可压缩粉末软凹模成形工艺。基于一定的基本假设,对筒形件颗粒或可压缩粉末软凹模的成形工艺进行了力学分析。将该工艺与刚性模具成形工艺进行了对比,分析了筒形件成形过程中各变形区域的应力应变状态及数值大小,推导出变形时与颗粒或可压缩粉末接触区域的应力和应变的计算公式。研究结果证明,颗粒或可压缩粉末软凹模成形工艺有利于防止成形零件缺陷的产生,可提高板材的成形极限。
제출료일충과립혹가압축분말연요모성형공예。기우일정적기본가설,대통형건과립혹가압축분말연요모적성형공예진행료역학분석。장해공예여강성모구성형공예진행료대비,분석료통형건성형과정중각변형구역적응력응변상태급수치대소,추도출변형시여과립혹가압축분말접촉구역적응력화응변적계산공식。연구결과증명,과립혹가압축분말연요모성형공예유리우방지성형령건결함적산생,가제고판재적성형겁한。
A new granules or powder soft cavity forming（GFCF） technology was presented herein and the mechanics analysis was finished.The stress and strain state of forming parts were analyzed and the values were calculated compared with common rigid die forming based on the fundamental assumption.The theoretic equations were obtained for calculating the values of stress and strain.The research results prove that the forming limit can be improved and defects can be prevented when parts are formed by granules or powder flexible cavity forming technology.