Industry News

- July 23, 2021

Advantages and disadvantages of isostatic pressing

1. The density distribution of the isostatic pressing compacts is relatively uniform, and the anisotropy coefficient is small (isotropic products).

2. Ability to produce products with higher density.

3. Ability to produce products with complex shapes.

4. During pressing, the relative movement of the powder body and the elastic mold is very small, so the friction loss is also very small, and the unit pressing force required under the same density is lower than that of the molding method.

5. The mold material is rubber and plastic, and the cost is lower than that of the steel mold.

However, it should be pointed out that the isostatic pressing method also has some disadvantages:

1. The shape of the green compact formed by isostatic pressing is somewhat irregular, and the dimensional accuracy and surface finish of the green compact are poor.

2. The production efficiency is low.

3. The life of the rubber or plastic mold used is much shorter than that of the metal mold.

Isostatic pressing can be divided into liquid isostatic pressing and gas isostatic pressing according to the different transmission pressure medium. Gas isostatic pressing is generally carried out under heating, so it can also be called hot isostatic pressing.