??? ????? ??? ?? ????? ????? ?? ???? ????? ???? ??? ???? ??? ???? ??? ?? ??? ?? ???? ??? ???? ???? ??! ????? ??????? ??? ?? ??? ??? ???? ??? ??? ???? ?????? ?? ??? ??? ???? ?? ??? ??! ??? ??? ????? ????? ??? ????? ??? ?? ??? ???? ???? ???? ?? ??? ?? ??????? ???? ????? ???? ??? ???? ?? ????? ?? ???? ??? ??? ??? ????? EMAR metal continuously die cold extrusion generally simulates the process from blank to finished product. If ten steps are determined to be completed (excluding cutting and edge cutting), the deformation of the simulated blank forming process in each step will not exceed 10%, and the bending R angle cannot be too large, otherwise it will seriously affect the life of the punch. ??? ????? ?????? ???? ??? ??? ???? ??? ??? ????? ?? ???? ?? ???? ?????? ?? ?????? ???? ???? ?????? ???? ?? ??? ????? ?????? ?? ??? ?? ???? ????? ????? ??? ??? ??. ??????? ??? ??????? ???? ???? ?? ????? ??????? ??? ???? ?? ???? ??? ??? ??? ??? ????? ???? ??? ?? ?? ?? ??? ????? ???? ?? ?????? ???? ?? ??? ?? ????? ????? ????? ??? ??? ???? ?? ????? ?? ??? ??? ??? ?? ?? ??? ??? ???? ??. ????? ??????? ?? ????? ??? ??? ?? ?????? ??? ?? ???? ????? ???? ?? ???? ??? ??? ??? ????? ??????? ?????? ???? ?? ???? ??? ??? ???? ????? ????? ????? ?? ????? ???? ?? ?? ?? ??? ?? ????? ????? ?????? ????? ??? ??? ????? 0.3 ????? ?? ???? ????? ?? ???? ???? ??? ??? ?? ????? ????? ??? ??? ???? ?? ???? ???? ???? ??? ???? ???? ???? ????? ?? ???? ????? ?? ???? ????? ?? ????? ??? ???? ?? ????? ?? ??? ??? ???? ?? ??? ???? ??. ???? ?????? ???? ????? ?? ????? ?? ?? ???? ???? ?????? ???? ?????? ????? ???? ????? ????? ???? ??? ?? ??? ??? ?? ?? ???? ?? ?????? ?????????? ?????? ???? ????? ???? ????? ???? ?? ????? ??? ????? ????? ??????? ???? ?? ?????? ????? ??? ??? ????? ????? ?? ?? ??? ????? ??????? ???? ?? ????? ????? ???? ??? ?? ???? ???? ??? ?? ???? ????? ????? ??? ???????? ?? ???? ????? ??? ???? ??? ?? ?? ??? ??? ???? ??? ??. ???? ????? ???? ?? ??? ??? ????? ???????? ???? ????? ?? ????? ????? ??. ???? ???? ?? ??? ?????? ?? ????? ?? ???? ?????? ????? ???? ??? ????????? ??? ????? ???? ??? ??????? ????? ??? ?????? ??? ??? ???? ??? ?? ????? ??? ???? ??? ???? ??? ????? ?? ??? ?? ??????? ?? ???? ???. ???? ??? ?? ??? ??? ??? ??? ?? ????? ??? ?? ?? ?? ???? ???? ?? ?? ??? ??? ?? ?? ??? ???? ?? ????? ??! ??? ????? ???? ????? ??????? ???? ?? ??? ??? ????? ???: ??? ?????? ?????? ????? ??? ?????? ????? ??????? ?? ?? ?? ??? ???? ??? ???? ?????! EMAR ???? ??? ?? ????? ?? ????? ??????? ?????? ?? ????? ?? ??? ??. ??? ???? ????? ??? ????? ?? ????? ??????? ?????? ?? ???? ???? ????? ???? ???? ???? ????? ?? ?? ????? ??????? ?????? ???? ??? ?????? ?? ??? ?????? ?? ????!