介绍了美式八角锤锤体精锻成形新工艺及其预锻模结构设计要点.Title : New Process and Design of Pre - forming Die for Precision Forging U.S.锻造过程实现净形和近净形制造关键是优化预锻模的设计.The key step in flashless forging is to optimize th ed design of preform die shape....