Understanding Hot Isostatic Pressing Overview of Hot Isostatic Pressing Hot Isostatic Pressing (HIP) is a manufacturing process that uses elevated temperature and isostatic gas pressure to eliminate porosity and increase density in metals, ceramics, polymers, and composite materials. This process improves the mechanical properties and workability of the materials. Hot isostatic pressing is commonly used for eliminating microshrinkage in castings, consolidating powders, diffusion bonding, sintering, pressure-assisted brazing, and fabricating metal matrix composites. The North American Heat Treatment Association ranked hot isostatic pressing as one of the three most promising technologies and processes in the global heat treatment industry for 2021. Hot Isostatic Pressing Process Hot isostatic pressing equipment consists of a high-pressure vessel, heating furnace, compressor, vacuum pump, storage tank, cooling system, and computer control system. The high-pressure vessel is the key ...