The present invention discloses a forward and backward extrusion composite forming method using a mould having an open inner cavity, including the following steps: (1) the structural design and assembly of the forward and backward extrusion composite mould having the open inner cavity; (2) the preparation of the initial billet; and (3) forward and backward extrusion composite forming. The present invention can greatly improve the length-diameter ratio of the blind hole and is widely used in alloy steel, aluminum alloy, magnesium alloy, copper alloy and other components.

A method of producing a clad billet includes heating a corrosion resistant alloy (CRA) cylinder having a hollow interior to expand its inner diameter; inserting a solid carbon or low-alloy steel (CS) material into the hollow interior of the heated (CRA) cylinder so that an outer surface of the (CS) material faces the inner diameter of the (CRA) cylinder; cooling the (CRA) cylinder to contract and shrink the inner diameter of the (CRA) cylinder onto the outer surface of the (CS) material creating an interference fit at an interface with the outer surface, resulting in a composite billet assembly; and hot extruding the composite billet assembly to reduce its size and form the clad billet having a metallurgical bond between the (CS) material and the (CRA) cylinder. The clad billet can be hot-rolled to form metallurgically-bonded clad bar, or can be cold pilgered/cold drawn to form a metallurgically-bonded clad pipe.

A precise and efficient cold-extension forming method for an unsymmetrical ferrule blank, comprising pipe-cutting blanking, surface phosphorus saponification treatment, ferrule cold-extrusion forming, and turning post-treatment. In the step of surface phosphorus saponification treatment, firstly, shot blasting pretreatment is performed on the surface of a ferrule blank by using a shot blasting machine; and then, the process steps of washing, phosphorization, washing, saponification, and drying are completed in sequence. In the step of ferrule cold-extrusion forming, automatic material feed is performed by using an automatic feeding machine, and the material is conveyed to a cold-extrusion punch press for cold-extension. The method features low equipment investment cost, short technological process, and low energy consumption.

A billet supply device is provided with: a base; a first frame supported on the base to be freely movable back-and-forth; a first movement conversion mechanism for moving the first frame back-and-forth with respect to the base; a second frame provided with a billet mounting unit and supported on the first frame to be freely movable back-and-forth; and a second movement conversion mechanism for moving the second frame back-and-forth with respect to the first frame. Parts of both movement conversion mechanisms including a ball screw mechanism are supported rotatably on a common support member for the first frame. The first frame and the second frame are moved back and forth to the extrusion center side with respect to the base simultaneously by a driver for rotationally driving the parts at the same time.

A billet supply device is provided with: a base; a first frame supported on the base to be freely movable back-and-forth; a first movement conversion mechanism for moving the first frame back-and-forth with respect to the base; a second frame provided with a billet mounting unit and supported on the first frame to be freely movable back-and-forth; and a second movement conversion mechanism for moving the second frame back-and-forth with respect to the first frame. Parts of both movement conversion mechanisms including a ball screw mechanism are supported rotatably on a common support member for the first frame. The first frame and the second frame are moved back and forth to the extrusion center side with respect to the base simultaneously by a driver for rotationally driving the parts at the same time.

Systems, devices, and methods are described for extruding materials. In certain embodiments, one or more hollow billets are loaded onto an elongate mandrel bar and transported along the mandrel bar to a rotating die. The billets are transported through fluid clamps, which engage the mandrel bar and provide cooling fluid to the mandrel bar tip, and through mandrel grips, which engage the mandrel bar and prevent the mandrel bar from rotating. One or more press-rams advance the billets through a centering insert and into the rotating die. A quench assembly is provided at an extrusion end of the extrusion press to quench the extruded material. A programmable logic controller may be provided to control, at least in part, operations of the extrusion press system.

Systems, devices, and methods are described for extruding materials. In certain embodiments, one or more hollow billets are loaded onto an elongate mandrel bar and transported along the mandrel bar to a rotating die. The billets are transported through fluid clamps, which engage the mandrel bar and provide cooling fluid to the mandrel bar tip, and through mandrel grips, which engage the mandrel bar and prevent the mandrel bar from rotating. One or more press-rams advance the billets through a centering insert and into the rotating die. A quench assembly is provided at an extrusion end of the extrusion press to quench the extruded material. A programmable logic controller may be provided to control, at least in part, operations of the extrusion press system.

The present invention discloses a forward and backward extrusion composite forming method using a mould having an open inner cavity, including the following steps: (1) the structural design and assembly of the forward and backward extrusion composite mould having the open inner cavity; (2) the preparation of the initial billet; and (3) forward and backward extrusion composite forming. The present invention can greatly improve the length-diameter ratio of the blind hole and is widely used in alloy steel, aluminum alloy, magnesium alloy, copper alloy and other components.

A method of, and apparatus for, handling components for a sheet extrusion system including the steps of: obtaining a carriage configured to support different components each making up a part of a sheet extrusion system; placing a first of the different components in a supported staging position on the carriage; performing an operation on the first of the different components in the supported staging position to at least one of: a) transport the first of the different components; b) perform a maintenance step on the first of the different components; c) repair the first of the different components; or d) set the first of the different components up for installation; separating the first of the different components from the supported staging position on the carriage; and reconfiguring the carriage to maintain a second of the different components, that is different in configuration than the first of the different components, in a supported staging position on the carriage.

A method of, and apparatus for, handling components for a sheet extrusion system including the steps of: obtaining a carriage configured to support different components each making up a part of a sheet extrusion system; placing a first of the different components in a supported staging position on the carriage; performing an operation on the first of the different components in the supported staging position to at least one of: a) transport the first of the different components; b) perform a maintenance step on the first of the different components; c) repair the first of the different components; or d) set the first of the different components up for installation; separating the first of the different components from the supported staging position on the carriage; and reconfiguring the carriage to maintain a second of the different components, that is different in configuration than the first of the different components, in a supported staging position on the carriage.