Complex PM AssembliesNEAR NET SHAPE (NNS) TECHNOLOGY MAKES IT POSSIBLE TO PRODUCE COMPONENTS FROM POWDERS USING A STEEL CAPSULE WITH THE CONTOUR OF THE COMPONENT FILLED WITH POWDER AND CONSOLIDATED BY HOT ISOSTATIC PRESSING (HIP).
This technology is the only cost-effective manufacturing method capable of producing complex designs with cooling patterns which cannot be machined from solid.
The service offered by the Bodycote HIP division includes capsule design using finite element methods, capsule production, powder filling, evacuation and consolidation by HIP.
Powder metallurgy, advanced capsule design and hot isostatic pressing make it possible to create complex cooling duct patterns, for example in moulds or in the first wall of fusion reactors without machining.
Complex pipe systems are welded into a capsule which subsequently is filled with powder and HIPped.
The shrinkage of powder and capsule during the HIP process is calculated using finite-element methods, the parts are near net shaped.
It is also possible to use this HIP process for the diffusion bonding of other materials to this complex structure.
Advantages
Virtually any complex form of pipe system can be welded into a capsule. There are few limits to design and the cooling system can be very near to shape without machining.
Finite-element methods can be used alongside empirical calculations for the temperature behaviour of the component to optimise the design of the component.
Applications:
- Nuclear industry
- Heat shields
- Tempering patterns
- Cooling patterns
- Hydraulic components
- Pneumatic components
- Fuel systems
- Tools and moulds
| 
Return