Abstract: In a self-tightening type sealing device according to the present invention, not only a sealing member is tightened by an internal pressure, but also a tightening force imparting device which tightens the sealing member separately from the internal pressure is provided so as to be remotely operable by a controller. This construction remedies drawbacks involved in manual operation of the tightening force imparting device.

Abstract: In a high temperature/high pressure vessel for treating a workpiece placed in the interior of the vessel at a high temperature and a high pressure wherein piano wire is wound under tension round an outer periphery of a cylindrical body to apply a compressive residual stress to the cylindrical body and axial openings of the cylindrical body are tightly closed with upper and lower lids so that the lids can be disengaged from the openings, the cylindrical body is constituted as a two-layer cylindrical body comprising an inner cylinder and an outer cylinder which is fitted on the inner cylinder through plural spacers arranged along an outer periphery surface of the inner cylinder, allowing cooling water flow paths to be formed each between adjacent such spacers so as to extend from one end side to an opposite end side of the tow-layer cylindrical body.

Abstract: In a self-tightening type sealing device according to the present invention, not only a sealing member is tightened by an internal pressure, but also a tightening force imparting device which tightens the sealing member separately from the internal pressure is provided so as to be remotely operable by a controller. This construction remedies drawbacks involved in manual operation of the tightening force imparting device.

Abstract: A pressure processing device including a vessel having a body and an opening/closing member. A seal member is provided on a joining surface between the body and the opening/closing member, and a non-sliding joining surface is provided which is not slidably moved when the member is opened and closed. A device is provided including a diaphragm for housing an object to be processed, and a fluid introducing passage to the vessel provided so that a greater part of a fluid flowing into the vessel flows into the diaphragm. The diaphragm can be formed of heat insulating material, and a filter can be provided for removing particles installed on the side of the diaphragm into which a fluid flows. A plate having a labyrinth construction can be provided for trapping particles by parts on a surface thereof. A pressure processing device in which an object may be washed is also provided.

Abstract: In a high temperature/high pressure vessel for treating a workpiece placed in the interior of the vessel at a high temperature and a high pressure wherein piano wire is wound under tension round an outer periphery of a cylindrical body to apply a compressive residual stress to the cylindrical body and axial openings of the cylindrical body are tightly closed with upper and lower lids so that the lids can be disengaged from the openings, the cylindrical body is constituted as a two-layer cylindrical body comprising an inner cylinder and an outer cylinder which is fitted on the inner cylinder through plural spacers arranged along an outer periphery surface of the inner cylinder, allowing cooling water flow paths to be formed each between adjacent such spacers so as to extend from one end side to an opposite end side of the tow-layer cylindrical body.

Abstract: An indirect extrusion process making use of an apparatus having a main ram and a container which are adapted to be driven independently of each other, the container being moved during the extrusion at a speed equal to or higher than that of the main ram, so as to produce the extrusion force, characterized in that the movement of the container relative to the main ram is prevented so that the power for moving the container may be added to the extrusion force, so as to effect extrusion without causing change in the relative position between the container and the billet during extrusion, and that the main ram and the container are connected at a desired position in accordance with the length of the billet, making use of the frictional force exerted between the container and said billet, such that extrusion may be effected with respect to container and the billet in connected state of operation.