A process to fabricate ultra-fine grain metal hollow object, comprising: inserting an annealed hollow prototype in an Equal Channel Angular Pressing (ECAP) die, providing a flexible elastic polyurethane mandrel to fill the central hollow space, optionally (if needed) provide polyurethane support to fill the spaces between the outer boundary of the prototype and the inner surface of the ECAP channel and to exert sufficient pressure to complete the ECAP process. The process is designed to improve thermal conductance and mechanical properties of hollow metal parts and is especially applicable to achieving the maximal heat conductance and tensile strength of titanium piping, construction tubing, and cylindrical reactors.

Devices and methods for performing shear-assisted extrusion processes for forming extrusions of a desired composition from a feedstock material are provided. The processes can use a device having a scroll face having an inner diameter portion bounded by an outer diameter portion, and a member extending from the inner diameter portion beyond a surface of the outer diameter portion.

Extrusion feedstocks and extrusion processes are provided for forming extrusions of a desired composition from a feedstock. The processes can include providing a feedstock having at least two different materials and engaging the materials with one another within a feedstock container.

Methods for preparing metal sheets are provided that can include preparing a metal tube via shear assisted processing and extrusion; opening the metal tube to form a sheet having a first thickness; and rolling the sheet to a second thickness that is less than the first thickness.

A solid composite additive manufacturing method for high-performance structural component includes: the rod-shaped raw material of solid composite additive is heated to a solid solution temperature, wherein the rod-shaped raw material is prepared by casting method; the rod-shaped raw material of the solid composite additive after solid solution is loaded into the extrusion die and extruded into a set shape; The raw materials of the extruded solid composite additive are laid on the base plate layer by layer according to the track by rolling or other pressure connection methods to form the prefabricated billet of the solid composite additive. The prefabricated billet is processed by numerical control to obtain metal part. The solid composite additive manufacturing method refines the grain, breaks the oxide film, and improves the mechanical properties of the structural component.

Methods, systems, and apparatuses for component manufacturing are provided. A component may be manufactured via an extrusion of loose substrate material into a unitary tubing. Features may be added to the tubing via friction stir additive manufacturing to manufacture a component. In this manner, a component may be manufactured from titanium alloys while processing challenges such as iron segregation or material loss through machining are ameliorated. Such a component may replace steel or other high strength components and further exhibits corrosion resistance.

The present disclosure relates to the field of screw pump technologies, and in particular to a rotary mold extrusion molding process of a screw pump rotor. The rotary mold extrusion molding process of a screw pump rotor includes: performing isothermal spheroidizing annealing for a metal embryo material after treating the metal embryo material ultrasonically for 8˜30 s; performing cylindrical turning for the annealed metal embryo material and then performing sand-blasting, and soaking the metal embryo material in saponified oil for 10˜30 min for lubrication treatment, where the saponified oil contains a nano-silicon carbide of 0.5%˜8% which is a nano-silicon carbide mixture with particle sizes of 20˜60 nm and 140˜200 nm with a mixed weight ratio of 1:(2.8˜4); at room temperature, placing the metal embryo material into an extrusion cylinder to perform rotary mold extrusion molding so as to obtain a finished product.

New 6xxx aluminum alloy products and methods and systems of making the same are disclosed. A method may include heating a billet of a 6xxx aluminum alloy to a preheat temperature, holding the billet at the preheat temperature for a time sufficient to dissolve at least some precipitate hardening phases of the billet, extruding the billet into an extruded product wherein, during the extruding, both the billet and the extruded product are maintained at or above the preheat temperature, discharging the extruded product from the extrusion apparatus while maintaining the extruded product within 100° F. of a solvus temperature of the 6xxx aluminum alloy, and moving the extruded product from the heating shroud to a quenching apparatus.

A method for producing seamless pipes and an extruder are provided, including: S1, sleeving an ingot holding cylinder on an upsetting shaft and feeding an aluminum bar; S2, moving the ingot holding cylinder backwards; S3, squeezing the aluminum bar by an extrusion plug; S4, after upsetting, moving the ingot holding cylinder and the extrusion plug back to one side away from the upsetting shaft; S5, removing the upsetting shaft and installing a mold on the mold shaft; S6, perforating the aluminum bar after upsetting by a perforating needle; S7, extruding the perforated aluminum bar by the extrusion plug. The aluminum bar after upsetting keeps the same central axis as the extruder centerline and the ingot holding cylinder. The seamless pipes extruded from the mold are uniform, thereby improving their concentricity and finished product rate.

In various embodiments, metallic wires are fabricated by combining one or more powders of substantially spherical metal particles with one or more powders of non-spherical particles within one or more optional metallic tubes. The metal elements within the powders (and the one or more tubes, if present) collectively define a high entropy alloy of five or more metallic elements or a multi-principal element alloy of four or more metallic elements.

A method for producing capillaries from nonferrous alloys, in particular of Al, which includes the continuous cold rotary extrusion of a blank having a solid cross-section, obtained by casting, in order to produce a tube having a hollow cross-section. The deformation of the blank to be extruded is achieved only by using friction force. The method further includes at least one step of cold drawing of the extruded tube in order to reduce its diameter to the diameters corresponding to a capillary.

Method for producing structural components from heat treatable aluminum alloys based on extruded material, in particular AA 6xxx series alloys, the components having improved crush properties and being particular applicable in crash zones of vehicles, such as longitudinals and crash boxes, the method including the following steps: a. casting a billet from said alloy by DC casting, b. homogenizing the cast billet, c. forming a profile from the billet by extrusion, preferably a hollow section d. optionally, separate solution heat treatment, e. quenching the profile down to room temperature after the forming step and the possible separate solutionising step, f. stretching the extruded or the separate solutionised profile to obtain at least 1.5% plastic deformation, g. artificially ageing the profile.