The Impact Of The Pressing Process Of Precision Mold Parts

Effect of powder properties

Powders with high hardness, low plasticity, and high friction are poor in pressing performance, which can be appropriately improved by adding lubricants or molding agents; when the powder has low purity and high oxygen content, the pressing performance is poor, and the reduction treatment of the raw material powder can be overcome; single The fine-grained or coarse-grained powders, as well as powders with regular shapes, are not ideal. The use of mixed-size powders and powders with complex particle shapes can improve the compaction performance.

Impact of the suppression process

The smoother the mold surface, the higher the hardness and the greater the rigidity, the better the density and uniformity of the bad body. The density of the green body using two-way pressing is higher and more uniform than the one-way pressing. The lower the pressing speed, The longer the dwell time, the better the density of the green body. It is especially important for abrasive tools with large specifications or complex shapes.