1990 Volume 8 Issue 3 Pages 319-325
Hot isostatic pressing (HIP) of powders is a manufacturing process which forms high quality components from ceramic and metal powders under the condition at high temperature and high pressure. The most important problem for the HIP process is to get uniformly densified near-net-shape products. Because the sintering behavior during HIP depends on many process parameters, a simple and systematic method is greatly required to select the optimum process variables without trial and error procedures.
In this paper, analytical formulation for an axially symmetrical model is presented to predict the sintering deformation behavior during hot isostatic pressing of cylindrical bodies. The governing equations consist of three parts: heat conduction equation, densification rate equation and shape change equation. Effects of particle radius, HIP temperature, pressure and initial density distribution are discussed on the results of computer simulation of alumina powders.
