manufacture of an article by hot isostatisches presses

摘要

In a hot isostatic pressing (HIP) process, for example for securing blades (5) to a disc (3) to form a blisk (1), the temperature of the powder (6) to be consolidated is raised to a predetermined temperature, which may be the eventual required pressing temperature, before the pressure rise to the pressing pressure is initiated. If the powder is a titanium alloy and the process employs steel tooling pieces (4), the application of pressure occurs only when the temperature has risen to the extent that the steel is harder than the titanium alloy.