Explanation

In powder pressing, the female die is fixed and the upper and lower die punches are pressurized from both ends simultaneously, which is called double-action pressing. In double-action pressing, if the pressure in both directions is equal, the low density layer is located in the middle of compact; On the contrary, the low density layer moves to the low pressure end. The density distribution of double-action pressing compact is more than that of one-way pressing? It is uniform, and the density difference is reduced. It is suitable for parts with height diameter ratio greater than 2.

Classification