Press cylinder for high-temperature, high-pressure pressing machine.

摘要

The invention relates to a press cylinder for a high-temperature, high-pressure pressing machine for use in sinter molding ceramics, hard metals, and the like. An outer casing (11) constructed of a carbon fiber reinforced carbon composite and an inner casing (12) constructed of a heat resistant material are fitted together. The inner casing (12) is formed with a longitudinally extending slit (12A) which meets given conditions. A gap (B) which meets given conditions is formed between the outer casing (11) and the inner casing (12). Because of the presence of the slit (12A) and the gap (B), no substantial stress is liable to be exerted on the outer and inner casings which are different in thermal expansion coefficient. Therefore, the outer and inner casing (11,12) are not liable to fracture or plastic deformation.