A Multi Port Extrusion tubing (MPE tubing) (10) made from a Multi Port Extrusion (MPE), the MPE being a web like extrusion (Web-MPE) with two or more individual tubes (8) interlinked with webs (9). The webs have a thickness, which is less than the tube diameter of the individual tubes, and the MPE tubing includes at least one bending zone (A), and at least two straight zones (C1, C2). The web-MPE in the bending zone (A) is bent so that each individual tube has a U-shape, and the web-MPE in a first straight zone (C1) is parallel to the web-MPE in an adjacent second straight zone (C2). The web-MPE in the straight zones on each side of the bending zone (A) extend in substantially the same plane, so that all individual tubes of the web-MPE in the straight zones are parallel to each other, and extend in the same plane.

The invention concerns a method for manufacturing a motor vehicle structural component (1) from an extruded multichamber hollow profile, with the following steps: a) provision of an extruded profile (2) with at least two precursor hollow chambers (8, 9) which are separated from one another by an inner wall (7), wherein at least one outer wall (3, 4) of at least one precursor hollow chamber (8, 9), in cross-section perpendicularly to the longitudinal extent of the extruded profile (2), has a region (16) with non-linear course, b) forming of the extruded profile (2) in at least one of its end regions into the motor vehicle structural component (1), wherein at least the region (16) with non-linear course of the at least one outer wall (3, 4) of the at least one precursor hollow chamber (8, 9), with non-linear course in cross-section, is at least partially straightened, with a change in cross-section of the respective precursor hollow chamber (8, 9) into the cross-section of the corresponding hollow chamber (14, 15) of the motor vehicle structural component (1).

There is provided a copper alloy backing tube formed of a copper alloy having a composition containing 0.10 mass % or more and 0.30 mass % or less of Co, 0.030 mass % or more and 0.10 mass % or less of P, 0.01 mass % or more and 0.50 mass % or less of Sn, 0.02 mass % or more and 0.10 mass % or less of Ni, and 0.01 mass % or more and 0.10 mass % or less of Zn. A copper balance containing impurities. A mass ratio [Co]/[P] is set to be within a range of 3.0 or higher and 6.0 or lower. A thermal conductivity is set to 250 W/(m.Math.K) or higher. A micro-Vickers hardness after a heating treatment is performed in a condition of being held for one hour at 250 C. is 100 Hv or higher, and a decrease rate from a hardness before the heating treatment is set to 5% or less.

The present invention discloses a rotary extrusion producing method for producing an inner ring rib with a large aspect ratio formed of a hollow billet, which includes: combining, at an initial stage of rotary extrusion, two convex dies together and driving, by a slider on a press machine, left and right half convex dies to extrude a blank downward to form an initial profile of a transverse rib; dragging respectively, by left and right horizontal hydraulic cylinders, the left and right half convex dies to move in a radial direction, to form an initial cylindrical wall, so as to achieve a purpose of forming the transverse rib, once the blank is extruded downward by a certain depth, where a head of a mandrel is set to be at a certain conical degree, and a certain number of processed pits are distributed on an inner cavity of a concave die.

A method for the calibration or end sizing of a hollow profile component produced by extrusion for automobile manufacturing. The hollow profile component is inserted into the cavity of an opened press tool and closing the press tool. Expandable mandrels are introduced into the open profile ends of the hollow profile component. The hollow profile component is calibrated or end-sized by applying force simultaneously on the outside and on the inside. The expandable mandrels are retracted, opening of the press tool, and removing of the hollow profile component.

Various implementations include methods and related tools for forming loudspeaker housings. In some implementations, these methods and tools can be used to form a loudspeaker housing having a non-circular shape. One method includes: forming a set of perforations along a first region of a wall of a hollow cylinder of material; and deforming the wall to a non-circular shape after forming the set of perforations.

A composite tube manufacturing method includes the following steps: providing a billet, wherein the billet includes an inner material and an outer material, and the inner material is enveloped in the outer material; heating the billet; pushing the billet to a to-be-extruded position; and performing an extrusion process, and extruding the billet to a composite tube, wherein the inner material and the outer material of the billet are respectively extruded to an inner tube and an outer tube of the composite tube, and the outer tube is bonded to the inner tube through the extrusion process.

A pre-stretching roller of an unwinding apparatus, associable to a wrapping machine, includes a main body elongated and manufactured by an extrusion process of a metal alloy. The main body includes a first tubular element having a cylindrical shape and defining an external cylindrical wall for interacting with a film, a second tubular element internal to the first tubular element and having a first end provided with a first seat suitable for coupling with a driving shaft of a driving unit and an opposite second end provided with a second seat suitable for coupling with a supporting pin for fixing the pre-stretching roller to the unwinding apparatus, and a plurality of longitudinal vanes which connect the first tubular element to the second tubular element. The second tubular element has a plurality of longitudinal ribs, each connected to a respective longitudinal vane.

A suspension linkage for a motor vehicle includes an extruded body having a first wall and a longitudinal length. An extruded feature is disposed on the first wall of the extruded body and extends along the longitudinal length. The extruded feature has a cross-sectional profile configured to control a flexural rigidity of the suspension linkage.

Rather than using a conventional stamping forming process with steels having high ultimate tensile strength and relatively low initial yield, tubular hydroforming techniques are introduced to synergize with BIW part forming, or forming of other load bearing parts. Such steels can have ultimate tensile strengths of greater than 1000 MPa and initial yields of less than 360 MPa In some embodiments, the steels have elongation of at least 40%. Such steels can include retained austenite.