Patent ID: 7008210

Claim:
A hot isostatic pressing apparatus for subjecting workpieces to hot isostatic pressing with use of a pressure medium gas, said apparatus comprising: a high-pressure vessel having a lower end opening and a removable lower lid, which can close said lower end opening; a treatment chamber provided within said high-pressure vessel to heat and press workpieces; a heat insulating structure which covers said treatment chamber sideways and from above, wherein said heat insulating structure is movable independently of said lower lid; a workpiece support mounted to said heat insulating structure so as to move with said heat insulating structure and independently of said lower lid; a base heater disposed below said treatment chamber to heat a pressure medium gas; and a fan disposed below said treatment chamber to supply the pressure medium gas in a heated state into the treatment chamber; wherein said heat insulating structure and workpieces can be taken out together from said high-pressure vessel and can be conveyed together separately from said lower lid.