To provide a piston type isotropic pressurizing device, in which, when inserting a piston into the inside of a pressure container, seizure is not generated, which is caused by friction between the sealing part on the lower edge of the piston and the inner wall of the pressure container, and further in which the sealing part on the lower edge of the piston is exceedingly easily applied with a lubricant to prevent generation of the seizure.
In the piston type isotropic pressurizing device, a piston 3 is inserted into the inside of a pressure container 1 with a pressurizing piston 6, and isotropic pressurizing treatment of a material to be treated is conducted by compressing a pressure medium 16 in the pressure container 1. Further, the piston type isotropic pressurizing device is structured such that the piston 3 is made freely rotatable in state where the piston is disengaged from the inside of the pressure container 1, and a lubricant applying means 17 for applying a lubricant is set to a sealing part 3a on the lower edge of the whole periphery of the piston 3.
Makoto Suhara
Takenaka Yoshimichi
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