Isostatic Pressing and Cold Isostatic Pressing

1. What Are Isostatic Presses?

Isostatic pressing is a process involving the application of equal pressure to a compacted powder to achieve optimal density and microstructure uniformity. Through this process, the press uses a gas or liquid to deliver force to a hermetically sealed container filled with the metal powder using either elevated or ambient temperatures. These processes are known as hot and cold isostatic pressing, respectively.

2. What Is Cold Isostatic Pressing?

Through this process, the mold is placed into a pressure chamber and filled with a room-temperature liquid before the press applies the pressure from all sides, condensing the metal powder. As a result, the powder particles mechanically bond to each other, creating a solid green body. Finally, the liquid is removed and the container expands to its original form so that the product can be retrieved.

3. Benefits of Isostatic Presses for Powder Compaction

· Cold isostatic pressing comes with many advantages that will optimize your metal powder compaction processes, such as:

· Predictable shrinkage during sintering.

· Reduced production costs.

· Ability to produce large parts with uniform densities.

· High green strength.

· Flexibility to create hard-to-produce shapes and dimensions.