Our PM/HIP process

Proxima Powder Metallurgy and Hot Isostatic Processing (PM-HIP) technology produces a specially designed capsule, formed close to the final desired shape. It is filled with metallic powder and consolidated under temperature and pressure creating a ‘Near Net Shape’ solid metal part.

Proxima has a leading capability for the manufacture of high value components more competitively than traditional methods. This proven process capability to precisely model the consolidation during the HIP process creates the near net shape components for your high complexity parts.

To achieve this high technical component and significant cost benefits we use a 6 step process. Here’s how it works.

Step 1

Making the capsule

The capsule is a gas tight metal container that defines the final product’s shape. We have a unique process in place to manufacture both simple and complex capsule shapes.

Making the capsule

Step 2

Fill with powder

Time to fill the capsule, via the filling ports, with metallic powder. Metals could include titanium alloys, nickel alloys, stainless steels and maraging steels. Yet our process allows any metal powder to be used, including alloys that cannot be made using traditional melting and forging processes.

Fill with powder

Step 3

Create a vacuum

The filled capsule is connected to our special evacuation system. We will use the same filling ports we filled the powder with to remove air from the canister until a high vacuum is reached.

Create a vacuum

Step 4

Seal the filling ports

A high vacuum is maintained once the filling ports are sealed. This is done by heating, crimping and welding them.

Seal the filling ports

Step 5

Hot Isostatic Pressing (HIP)

The HIP is a pressure vessel containing a high temperature furnace filled with argon gas. Once the sealed capsule is loaded into the HIP, it is exposed to extreme pressure at a temperature below the melting point of the metal powder which will consolidate the powder into a solid state component. The resulting component now has a fully isotropic (uniform) structure.

Hot Isostatic Pressing (HIP)

Step 6

Removing the capsule

The final step is to separate the finished component from the steel capsule, by either machining or pickling the capsule away. Once the capsule has been removed we have the option to complete the component to the final dimensions by in-house CNC machining. We also offer non-destructive testing (NDT).

Removing the capsule

Any questions?

If you would like to know more about PM-HIP and its possibilities please contact us and we can walk you through it.

You can get in touch here