Isostatic press technology is usually divided into cold isostatic pressing according to the temperature of its forming and consolidation 、Warm isostatic pressure 、Hot isostatic pressing 。

Isostatic pressing is a technology that realizes isostatic pressing under room temperature, usually using rubber or plastic as the mold material for the cladding and liquid or elastomer as the pressure medium. Cold isostatic pressing is mainly used for the forming and pressing of powder materials, providing preformed blanks for further sintering, calcination or hot isostatic pressing and other processes.

The simultaneous and equal transfer of pressure in all directions of the fluid medium is the basis of isostatic pressing technology, and the key to isostatic pressing technology is to establish a non-leaking interface between the pressed material and the pressure medium.

The dry bag method isostatic pressing is to semi-fix the elastic mold, not immersed in liquid medium, but sealed by upper and lower pistons. The pressure pump injects the liquid medium between the high-pressure cylinder and the pressurized rubber, and the pressure is transferred through the liquid and the pressurized rubber to form the blank under pressure. This method can be operated continuously, that is, the top cover of the mold is opened, loaded, and then the upper cover is pressurized and formed, and when discharging, the upper cover is opened, and the pressing billet is pushed out from the top through the top rod at the bottom. Short operating cycles and suitable for batch production.