公开(公告)号：HUT49065A

公开(公告)日：1989-08-28

申请号：HU424187

申请日：1987-07-17

Applicant: STEWART CHARLES L

Inventor： STEWART CHARLES L

IPC: B21C23/20 ,  B21C23/21 ,  B21C26/00

Abstract: An indirect extrusion press and method of operating the press. The press includes a container with opposite axial ends and an axial cavity for receiving a billet. The container is mounted for aligning the axial cavity with the extrusion axis. A bolster is disposed adjacent one axial end of the container for blocking movement of a billet out of the cavity when a force is applied against the billet from the other axial end of the container. A ram is mounted on the side of the container adjacent the other axial end of the container for movement in the axial direction of the container. The ram has an axial passage therethrough aligned with the extrusion axis. A rotatable turret is mounted on the ram, and a hollow pressing stem is mounted on the turret. The turret is rotatable for placing the hollow pressing stem in a first position aligned with the extrusion axis, and in a second position off of the extrusion axis. When the hollow pressing stem is in the first position it communicates with the axial passage through the ram and can be moved axially, via the ram, to press a die through the cavity to extrude a billet to form an extrusion product which exits the container via the hollow pressing stem and the axial passage in the ram. When the hollow pressing stem is in the second position it permits other tooling to perform operations on the extrusion axis of the press.

公开(公告)号：BR8707624A

公开(公告)日：1989-03-14

申请号：BR8707624

申请日：1987-03-04

Applicant: STEWART CHARLES L

Inventor： STEWART CHARLES L

IPC: B21C23/00 ,  B21C20060101 ,  B21C23/20 ,  B21C23/21 ,  B21C25/00 ,  B21C33/00 ,  B21C35/04 ,  B21C35/06

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container. An elongated stem having an axial passage is moved into the throughbore of the container to press the die toward the bolster, causing the billet to be extruded through the die to create an extrusion product which exits the container through the axial passage in the stem, while extrusion of the billet through the diametrical clearance between the pressure disc and the container is substantially avoided.

公开(公告)号：AU7752187A

公开(公告)日：1988-02-10

申请号：AU7752187

申请日：1987-07-17

Applicant: STEWART CHARLES L

Inventor： STEWART CHARLES L

IPC: B21C23/20 ,  B21C23/21 ,  B21C26/00

Abstract: An indirect extrusion press and method of operating the press. The press includes a container with opposite axial ends and an axial cavity for receiving a billet. The container is mounted for aligning the axial cavity with the extrusion axis. A bolster is disposed adjacent one axial end of the container for blocking movement of a billet out of the cavity when a force is applied against the billet from the other axial end of the container. A ram is mounted on the side of the container adjacent the other axial end of the container for movement in the axial direction of the container. The ram has an axial passage therethrough aligned with the extrusion axis. A rotatable turret is mounted on the ram, and a hollow pressing stem is mounted on the turret. The turret is rotatable for placing the hollow pressing stem in a first position aligned with the extrusion axis, and in a second position off of the extrusion axis. When the hollow pressing stem is in the first position it communicates with the axial passage through the ram and can be moved axially, via the ram, to press a die through the cavity to extrude a billet to form an extrusion product which exits the container via the hollow pressing stem and the axial passage in the ram. When the hollow pressing stem is in the second position it permits other tooling to perform operations on the extrusion axis of the press.

公开(公告)号：DK577487D0

公开(公告)日：1987-11-03

申请号：DK577487

申请日：1987-11-03

Applicant: STEWART CHARLES L

Inventor： STEWART CHARLES L

IPC: B21C23/00 ,  B21C20060101 ,  B21C23/20 ,  B21C23/21 ,  B21C25/00 ,  B21C33/00 ,  B21C35/04 ,  B21C35/06

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container. An elongated stem having an axial passage is moved into the throughbore of the container to press the die toward the bolster, causing the billet to be extruded through the die to create an extrusion product which exits the container through the axial passage in the stem, while extrusion of the billet through the diametrical clearance between the pressure disc and the container is substantially avoided.

公开(公告)号：AU7160287A

公开(公告)日：1987-09-28

申请号：AU7160287

申请日：1987-03-04

Applicant: STEWART CHARLES L

Inventor： STEWART CHARLES L

IPC: B21C23/00 ,  B21C20060101 ,  B21C23/20 ,  B21C23/21 ,  B21C25/00 ,  B21C33/00 ,  B21C35/04 ,  B21C35/06

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container. An elongated stem having an axial passage is moved into the throughbore of the container to press the die toward the bolster, causing the billet to be extruded through the die to create an extrusion product which exits the container through the axial passage in the stem, while extrusion of the billet through the diametrical clearance between the pressure disc and the container is substantially avoided.

公开(公告)号：CA378742A

公开(公告)日：1939-01-03

申请号：CA378742D

Applicant: STEWART CHARLES E

Inventor： STEWART CHARLES E

公开(公告)号：CA348588A

公开(公告)日：1935-03-05

申请号：CA348588D

Applicant: PAGET STEWART CHARLES

Inventor： PAGET STEWART CHARLES

公开(公告)号：CA325262A

公开(公告)日：1932-08-23

申请号：CA325262D

Applicant: STEWART CHARLES M

Inventor： STEWART CHARLES M

公开(公告)号：CA197300A

公开(公告)日：1920-02-17

申请号：CA197300D

Applicant: STEWART CHARLES C

Inventor： STEWART CHARLES C

公开(公告)号：CA184724A

公开(公告)日：1918-06-04

申请号：CA184724D

申请日：1918-03-18

Applicant: STEWART CHARLES V

Inventor： STEWART CHARLES V