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通过对现有简易半自动模架的改造和粉末冶金变速凸轮模具的设计，在国内常用普通四柱压机上，可成功地实现多台阶复杂结构件的压制
Through the transformation of the existing simple semi-automatic mold frame and the design of powder metallurgy variable speed cam mold, it can successfully realize the multi-step complicated structural component pressing on the ordinary common four-column press in China