对于如图1所示的粉末冶金异形零件,在生产过程中会遇到成形困难、脱模容易掉齿掉角,压坯各部分的密度难以保证均匀等问题。我们通过采用组合下模冲,控制压坯各部分的装粉高度及采用两次压制工艺等,较好地解决了以上问题。 For the powder metallurgy shaped parts as shown in Figure 1, during the production process will encounter forming difficulties, demolding easily fall off teeth, the density of the various parts of the green compact is difficult to ensure uniformity and other issues. We have adopted the combination of Chong under the control of the various parts of the compaction powder loading height and the use of two repression process, a better solution to the above problems.