A method is used to manufacture a drawn tube having a hollow low interior for housing an axle shaft. The method includes the steps of placing a billet into a first die assembly and pressing the billet into the first die to producing a pre-formed billet. The method also includes the steps of moving the pre-formed billet from the first die assembly to a second die assembly and pressing the pre-formed billet into the second die assembly to produce an extruded tube. The method further includes the steps of moving the extruded tube from the second die assembly to a third die assembly and pressing the extruded tube into the third die assembly to further elongate the extruded tube and decrease the thickness of the wall of the extruded tube to of from about 3 to about 18 millimeters to produce the drawn tube having the yield strength of at least 750 MPa.

A system of pullers, in particular for extruding metals, said system comprising at least a first puller and a second puller, each equipped with gripping means adapted to engage and grip an end portion of a profile, in particular of an extruded profile exiting from an extrusion press, said system comprising a first guide and a second guide, where said at least two, first and second, pullers can be translated along said first and second guides, where said first guide is dedicated to the translation of both said at least two, first and second, pullers in a single first translation direction, and where said second guide is dedicated to the translation of both said at least two, first and second, pullers in a second translation direction opposite to said first translation direction.

A system of pullers, in particular for extruding metals, said system comprising at least a first puller and a second puller, each equipped with gripping means adapted to engage and grip an end portion of a profile, in particular of an extruded profile exiting from an extrusion press, said system comprising a first guide and a second guide, where said at least two, first and second, pullers can be translated along said first and second guides, where said first guide is dedicated to the translation of both said at least two, first and second, pullers in a single first translation direction, and where said second guide is dedicated to the translation of both said at least two, first and second, pullers in a second translation direction opposite to said first translation direction.

A method for manufacturing a titanium aluminide blade of a turbine engine, including production of a titanium aluminide ingot, extrusion of the ingot through an opening in a die having one main arm and at least one side arm, such as to obtain a extruded ingot having the shape of a bar with a cross-section having one main arm and at least one side arm substantially perpendicular to the main arm, transverse cutting of the extruded ingot such as to obtain sections of extruded ingot, forging of each section of extruded ingot such as to obtain a turbine engine blade.

A cutting apparatus and a cutting blade is capable of restraining a highly-viscous substance from bending while preventing damage to a blade edge part. A pair of the cutting blades are configured for an approaching/separating movement, and the cutting blades are arranged with blade edge parts facing each other while having thickness directions oriented in the same direction. The cutting blades each have a gradually increasing thickness increased from a blade edge leading end toward a blade root part and have blade edge parts that are offset from one another in the thickness direction of the cutting blades. Each of the cutting blades has a surface in the thickness direction made of a material having a hardness lower than the blade edge part of the other cutting blade.

A cutting apparatus and a cutting blade is capable of restraining a highly-viscous substance from bending while preventing damage to a blade edge part. A pair of the cutting blades are configured for an approaching/separating movement, and the cutting blades are arranged with blade edge parts facing each other while having thickness directions oriented in the same direction. The cutting blades each have a gradually increasing thickness increased from a blade edge leading end toward a blade root part and have blade edge parts that are offset from one another in the thickness direction of the cutting blades. Each of the cutting blades has a surface in the thickness direction made of a material having a hardness lower than the blade edge part of the other cutting blade.

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 tubular structure for a rectangular battery can for an electric vehicle, which is thin and has very high dimensional accuracy in order to contain as much electrolyte as possible within a limited size, and a method of manufacturing the same are disclosed. In particular, extrusion of a material to a predetermined thickness is performed, and drawing of the extruded material to a thickness desired by a final product is performed. Accordingly, desired thickness uniformity of the final product is maintained.