Shanghai Advanced Metallurgical Technology Corporation-Hot_iso

Concept of Hot isostatic pressing:

also known as HIP, is a process in which powder or products are placed in a closed container, subjected to equal pressure in all directions, and subjected to high temperature and pressure to sinter and densify the products. It is an indispensable means for the production of high-performance materials and the development of new materials.

HIP

Hot Iso. Pressing

Classification of HIP:

Hot isostatic pressing can be classified into powder metallurgy, densification, and diffusion bonding applications depending on the material being processed and the purpose.

Powder Metallurgy

Hot isostatic pressing can directly shape powders, which are then packed into a sheath (similar to a mold). The sheath can be made of metal or ceramic (low carbon steel, Ni, Mo, glass, etc.), and then inert gases such as nitrogen and argon are used as pressure media to directly heat, pressurize, and sinter the powder into shape.

Densification

Hot isostatic pressing can densify castings with shrinkage porosity, such as aluminum alloys, titanium alloys, high-temperature alloys, etc. After hot isostatic pressing treatment, the castings can achieve 100% densification, thereby improving the overall mechanical properties of the castings.

Diffusion Joining

Place the surfaces of materials in contact with each other in a vacuum or protective atmosphere and heat them to a temperature below the melting point of the base material. Through hot isostatic pressing, align and apply pressure to cause local plastic deformation of the two connecting surfaces, resulting in mutual diffusion between atoms and the formation of a new diffusion layer at the interface, thus achieving reliable bonding.