Cold Isostatic Pressing Ceramics

For metals around 100 theoretical density can be achieved while ceramic powders that are more difficult to compress can reach about 95 of theoretical density.

Cold isostatic pressing ceramics.

Warm isostatic pressing wip differs from cip only in that shapes are pressed at warm temperature to about 100 c. Cold isostatic pressing cip is a manufacturing process for the consolidation of metal and ceramic powders. Cold isostatic pressing cip is conducted at room temperature. The hip process applies high pressure 50 200 mpa and high temperature 400 2 000 c to the exterior surface of parts via an inert gas e g argon or nitrogen.

A flexible commonly polyurethane mold immersed in a pressurized liquid medium commonly water is used in the cold isostatic pressing method see the scheme. For near net shaping and quality control of these materials a preform configuration of powder compact as well as density distribution and porosity structure must be investigated before sintering and subsequent processings. Medical implants tungsten carbide ceramics titanium and superalloys and aerospace parts. Some of the products that go through ips are.

The cold isostatic pressing cip is a convenient tool to yield the powder compact of advanced materials including ceramics. Hot isostatic pressing hip involves both temperature and pressure applied simultaneously to obtain fully dense. Isostatic pressing services ips is a toll hip company started in 2015 primarily to do toll hipping for the investment casting industry due to its prime location. Cip is used to consolidate metal and ceramic powders to make a green part that can be further treated i e.

Froyen in fundamentals of metallurgy 2005. Rolling machining or sintering. Isostatic pressing cold isostatic pressing consists in compacting a powder in an elastomeric container submersed in a fluid at a pressure of 20 to 400 mpa. Cold isostatic pressing cip is applied to consolidate ceramic or refractory powders loaded into elastomeric bags.

Hot isostatic pressing hip and cold isostatic pressing cip technology has been known for more than 50 years and is considered today to be a standard production route for many applications. Cold isostatic pressing allows the production of simple shaped small or large powder compacts up to 2000 kg with a uniform green density even for large.