A rolling apparatus has a frame and first and second roller mounted in the frame, rotatable about respective first and second axes, forming a nip through which a workpiece passes in a direction of travel, and each having a radially outwardly directed rolling surface that bears radially on the workpiece. The first roller has an axially directed first guide face that bears axially on the workpiece in the nip. A positioning assembly axially positions the first roller relative to the second roller. A shaping die is positioned axially downstream of the nip in the direction and receives the workpiece after it passes through the nip.

A device for the plastic forming of a workpiece made of metal or a metal alloy by ECAP is described. The device comprises more than two channels, wherein an inlet channel and an outlet channel are provided, wherein these channels indirectly connect to one another and are arranged approximately perpendicularly to one another. Furthermore, a method for the plastic forming of a workpiece made of metal or a metal alloy ECAP is described. The workpiece is pressed once or multiple limes through a device having more than two channels, wherein the workpiece is plastically formed by a single or multiple pressing through an inlet channel and an outlet channel which indirectly connects to the inlet channel and is arranged approximately perpendicularly thereto.

A special-purpose die for shaping an aluminum-magnesium alloy by rotating extrusion is provided, including a male die and a female die, wherein a trapezoidally-sectioned groove is formed at an end portion of a working area of the male die, an inner portion of the male die is hollow, with the hollow inner portion having sections of equal area, a circumferential wall of a die cavity of the female die is provided with at least two symmetrical axial grooves, and a cavity is formed inside a clamping part of the female die. The present disclosure remarkably reduces the axial extrusion force such that the deformation of the formed workpiece is more uniform, which greatly improves the mechanical property of the formed workpiece.

An additive manufacturing apparatus to build a three-dimensional metal object using a semi-solid filament extrusion method is disclosed. A frame comprises a carriage capable of moving in Y-axis and Z-axis direction. The frame further comprises an extruder head, which is attached to a support section of the carriage is configured to move in X-axis direction to continuously print a filament in a layer by layer fashion using a thixo-extrusion process on a print bed in a pre-defined three-dimensional path. The filament is a treated metal alloy fed into the extruder head via a feeder mechanism and heated to a semi-solid state to allow the controlled flow of the slurry via a nozzle section to build the three-dimensional extruded object with the predetermined microstructure. The metal alloy is pre-processed using a heat treatment and a mechanical deformation technique to enhance the properties of the filament used in the semi-solid extrusion process.

The present invention provides an isothermal processing method for making an isothermal processed copper clad aluminum composite comprising: providing an aluminum component and a copper component; cleaning the aluminum component and shape finishing the aluminum component; extruding the aluminum component into a core aluminum billet; cleaning the copper component; transforming the copper component into a copper cladding layer; cladding longitudinal and circumferential surfaces of the core aluminum billet with the copper cladding layer and molding the core aluminum billet and the copper cladding layer together to form a copper cladded aluminum billet; and transforming the copper cladded aluminum billet into an isothermal processed copper cladded aluminum composite through isothermal rolling and annealing. The present invention also provides an isothermal processed copper cladded aluminum composite and a system for manufacturing an isothermal processed copper cladded aluminum composite.

The invention relates to a method for manufacturing a composite material (8) comprising a metal matrix reinforced by a carbon reinforcement, characterised in that the method is a continuous extrusion method which comprises friction-heating of a mixture (7) obtained from a mixture of powders comprising a metal-matrix powder and a carbon-reinforcement powder, by means of a movable extrusion wheel (2), in a passage formed between a groove (2a) of the wheel (2) and a stationary element referred to as shoe (3), followed by carrying the mixture (7) thus heated towards an extrusion die (4).

A high-strength magnesium alloy member is suitable for products in which at least one of bending stress and twisting stress primarily acts. The member has required elongation and 0.2% proof stress, whereby strength and formability are superior, and has higher strength and large compressive residual stress in the vicinity of the surface of a wire rod. In the magnesium alloy member formed as a wire rod in which at least one of bending stress and twisting stress primarily acts, the wire rod includes a surface portion having the highest hardness of 170 HV or more in the vicinity of the surface and an inner portion having a 0.2% proof stress of 550 MPa or more and an elongation of 5% or more, and the wire rod has the highest compressive residue stress in the vicinity of the surface of 50 MPa or more.

A method and apparatus for additive manufacturing that includes a material guide for directing a supply of working material. An electro-magnetic heater is provided to heat and deposit molten working material as a new supply of working material is forced through the material guide. A single or twin screw extruder is provided within for advancing, mixing and/or depositing the working material through a tip positioned at an end of the material guide.

A method and apparatus for additive manufacturing that includes a material guide for directing a supply of working material and a plurality of rollers for advancing the working material. An electromagnetic heater is provided to heat and deposit molten working material as a new supply of working material is forced through the material guide.

A method and apparatus for additive manufacturing that includes a material guide for directing a supply of working material. An advancement mechanism comprising one or more pistons, pushers, plungers and/or pressure regulation systems are positioned behind at least a portion of the supply of working material for advancing the working material forward. The working material is heated using an electro-magnetic heating element and the melted or molten working material is deposited from a tip positioned at an end of the material guide.