用毛边槽桥部楔角不同的几种模具进行了模锻工艺试验,结果表明楔角α在3°～15°范围内,随着α的增大,充满性提高,成形载荷下降。 The die forging process was carried out with several molds with different wedge angles of the burring groove bridge. The results showed that the wedge angle α was in the range of 3 ° ~ 15 °. With the increase of α, the fullness increased and the forming load decreased.