HiPping for Aluminium Sand Castings
HiPping (Hot Isostatic Pressing) is used to enhance aluminium casting integrity, improve proof stresses and optimise mechanical properties.
During the HiP process, the castings are placed in a pressurised enclosed high temperature furnace. The castings are then heated in an inert gas, commonly argon, which applies uniform isostatic pressure. The process eliminates porous elements through a combination of plastic deformation, creep and diffusion bonding.
The benefits of HiPping
The HiP process offers a number of benefits for the manufacture of aluminium castings, including:
- the complete removal of porosity
- improved casting integrity and mechanical properties
- greater reliability and longer service life
- higher resistance to impact, wear and corrosion
- the potential for smaller, lower-weight, high-strength parts
In recent years, equipment and processing advancements in HiPping aluminium castings have made this a cost-effective way to deliver premium casting quality.
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