An extrusion press including a ram having a ram body configured for movement along a ram axis, and a compaction container defining a compaction compartment and having a compaction container axis. The compaction container is rotatable between a first orientation wherein the compaction container axis is not aligned with the ram axis and a second orientation wherein the compaction container axis is aligned with the ram axis such that the ram body is movable into the compaction compartment.

The present invention relates to an extrusion press (10, 20, 30) with a press cylinder (111), the press cylinder (111) being driven with an electro-hydrostatic control system (104) for a power transmission and being connected to a separate drive (120, 400) for rapid traverse, with a container (115), wherein the container (115) is connected to a hydraulic cylinder (117) for a power transmission and to a further separate drive (119, 300) for rapid traverse, with a hydraulic cylinder (101) with a locking device (103) for driving a shearing tool (102), wherein the hydraulic cylinder (101) is connected to the electro-hydrostatic control system (104), and wherein the press cylinder (111) in the power transmission and the hydraulic cylinder (101) for driving a shearing tool (102) are controlled alternately via the common electro-hydrostatic control system (104).

A method is used to manufacture a tube having a hollow interior for housing an axle shaft. The tube is formed in a single machine having a fixed base and a single press structure movable toward the fixed base. The single machine includes first and second die assemblies coupled to the fixed base and first and second mandrels coupled to the single press structure. The method includes the steps of placing a billet into the first die assembly, pressing the billet into the first die assembly with the first mandrel to producing a pre-formed billet, and moving the pre-formed billet from the first die assembly to the second die assembly. THE method further includes the steps of pressing the pre-formed billet into the second die assembly with the second mandrel to elongate the pre-formed billet and form a hollow interior therein to produce an extruded tube.

A container for use in a metal extrusion press comprises: a mantle having an elongate body comprising an axial bore; an elongate liner accommodated within the axial bore. The liner comprises a longitudinally extending passage through which a billet is advanced, and an elongate slot adjoining the passage. The container also comprises a vacuum conduit in fluid communication with the passage for removal of gases from the passage during extrusion.

A friction assisted tube fabrication method is disclosed. The friction assisted tube fabrication includes a set of methods such as a friction assisted tube forming, a friction assisted tube extrusion, and a friction assisted tube straining method. A metal object, for example, a deformable tube is simply deformed into the tube using a mandrel. The metal object with an initial diameter is forced across the slope of the mandrel with an angle. The mandrel is configured to rotate while forcing the metal object to deform into the tube with the desired radius. While rotating the mandrel, a friction is generated due to contact between the tube and the mandrel, thereby generating thermal energy to heat a deformation area of the tube for simply and easily softening and forming into the desired shape with accuracy diameter, and dimensions using a nominal pressing force without additional equipment and power.

Systems, methods, and apparatuses are provided herein to thermomechanically process a workpiece to increase the strength in terms of hardness and the electrical conductivity of the workpiece. In some embodiments, a shear strain is induced in a workpiece at a temperature or within a range of temperatures, and the workpiece is rotated about its longitudinal axis. Then, another shear strain is induced in the workpiece. In various embodiments, four shear strains are induced in a workpiece, and the workpiece is rotated between shear strains. The shear strains, temperatures, and rotations contribute to the increase in density of dislocations, precipitation growth, and refinement of grain size. The result is a workpiece such as AA1xxx aluminum with an increase in hardness and electrical conductivity.

If a mandrel for extruding metal pipes, having two axially offset pressing surfaces with different radial characteristics and having a transition region between these two pressing surfaces has a support surface in the transition region then the negative effect of narrowing, which arises owing to the mandrel shifting from a first pressing position, in which the first of the two pressing surfaces interacts with a die, to a second pressing position, in which the second pressing surface interacts with the die, can be minimized.

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 shear assisted extrusion process for producing cladded materials wherein a cladding material and a material to be cladded are placed in sequence with the cladded material positioned to contact a rotating scroll face first and the material to be cladded second. The two materials are fed through a shear assisted extrusion device at a preselected feed rate and impacted by a rotating scroll face to generate a cladded extrusion product. This process allows for increased through wall strength and decreases the brittleness in formed structures as compared to the prior art.

An extruder and tube extruder or metal extrusion press that has a press frame, which is composed of a cylinder bar and a counter bar connected to said cylinder bar, in which a movable block receiver holder that bears a block receiver and a movable plunger traverse are provided. A main cylinder or pressing cylinder is arranged in the cylinder bar. The cylinder receiving in its cylinder housing a pressing piston provided with a pressing plunger, and in which an equalization container is arranged in the cylinder housing. The container supplying hydraulic oil to the pressing piston by a slide plate provided on a central linkage. A filling valve that has a lid-like valve cone is formed in the transition from the equalization container to the cylinder housing.