Science, Maths & Technology
Hot isostatic pressing (HIP)
...changes. Typical examples are Ti-6Al-4V, 900˚C; Al-7.5Si-0.5Mg, 500˚C; Fe-16.5Cr-4.5Ni-4Cu, 1200˚C. Times at temperature vary with component size, material and pressure, but are of the order of 1–4 h. Pressurising medium is a high purity inert gas, usually argon, which is cleaned and re-used. Cooling is by means of internal heat exchangers and takes approximately 1 h...