ORIGIN OF THE LIQUID HOT ISOSTATIC PRESSING PROCESS

摘要

In the late 1980s, when the author was president of Metal Casting Technology, Inc. (MCT), a joint venture proccess development company between Hitchiner Mfg. Co., Inc. and General Motors, a new low cost casting process for titanium alloys was invented and later patented, US 5,299,619.All titanium castings required Hot lsostatic Pressing (HIP) to achieve good mechanical properties. The conventional HIP process, which uses argon gas to apply high pressure for closing internal porosity, is very effective, but very dangerous and costly - too much so for the commercial applications