终边是角，可以看成平面内一条射线绕着端点从一个位置旋转到另一个位置所成的图形。
该方法通过优化设计预成形模具形状，可实现精形终锻，得到无飞边、完全充满型腔和无折叠的终锻件。
This method can realize net shape forging by optimizing preform die shape. Flashless final forging with complete die fill and without folding-over defect can be obtained.
改进后，所得终锻件各部位充填饱满、飞边分布均匀并且无明显折迭缺陷。
The results shows that the forging part has better filling die, even flash and has not fold defect.
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