Abstract: A method for manufacturing a sheathing of a cable and a sheathing for a cable is provided where the method includes forming the cable sheathing by extrusion and the sheathing is made of a Pb—Ca—Sn alloy having a composition having from 0.03 to 0.05 weight % Ca and from 0.4 to 0.8 weight % Sn.

Abstract: An extrusion apparatus includes an extruder, a run-out table that supports an extruded material that has been extruded from the extruder, a feed roller and a pulling roller that are provided at a given interval so as to be able to come in rolling contact with the extruded material that is situated on the run-out table, and a cooling section that cools the extruded material between the feed roller and the pulling roller, wherein the feed roller and the pulling roller apply a tensile force to the extruded material while the extruded material advances from the feed roller to the pulling roller.

Abstract: A method for determining if a wire guide roller having a plurality of V-shaped grooves, each having a copper line thereon, arranged column-by-column on a periphery direction thereof is failed after slicing a plurality of wafers is disclosed. Based on the disclosed technical means, the efficacy may be achieved that a damage situation may be automatically examined and notified to maintain a yield in the slicing process in an online high speed environment.

Abstract: Systems, devices, and methods are described for extruding a material. In certain embodiments, an extrusion press system includes an extrusion die supported by a first support structure and a centering insert supported by a second support structure, wherein the centering insert guides a material to be extruded into the extrusion die. A positive stop may be coupled to the first support structure and extend towards the second support structure, wherein the positive stop defines a travel distance between the first support structure and the second support structure. In certain embodiments, movement of the second support structure towards the first support structure is limited by the positive stop to the travel distance. In certain embodiments, the positive stop is configured to adjust the travel distance.

Abstract: A method of producing a mine roof bolt includes: providing a plurality of bars of a predetermined length, moving the plurality of bars along a conveyor and indexing the position of the plurality of bars, and passing a portion of each of the bars through a processing station, where the processing station comprises at least one of a header assembly, an extruder assembly, and a threading assembly. The method further includes processing a portion of each of the bars with the processing station. A system for producing a mine roof bolt includes a conveyor configured to index and transport a bar, a feed arrangement configured to continuously deliver bars to the conveyor, a processing station comprising at least one of a header assembly, an extruding assembly, and a threading assembly, where the processing station is positioned along the conveyor and configured to receive and process a portion of the bars.

Abstract: The present disclosure provides a method of dual-phase hot metal extrusion comprising (i) providing a load carrier made of a first metal material, wherein the load carrier comprises one or more load chambers containing a second metal material, wherein the melting point of the second metal material is lower than the melting point of the first metal material, (ii) heating the load carrier to a temperature above the melting point of the second metal material and suitable for extrusion of the load carrier, and (iii) extruding the load carrier to form an extruded product. The present disclosure also provides apparatuses for accomplishing the dual-phase hot extrusion of metals and products resulting from such processes.

Abstract: An extrusion press comprising a control apparatus for handling the container is described, comprising one or more pairs of control cylinders (40, . . . 43) for handling the container, provided with piston sliding chambers fixed to the container (35), one cylinder of said pair having the rod facing the die platen (25) of the press, the other cylinder of said pair having the rod facing the main cross-piece (20) of the press.

Abstract: A method of extruding elements, especially made of metal, and a system for extruding elements, especially made of metal, are employed for production of elements by means of extrusion. The material is deflected from the infeed wheel tangentially or at an angle within 90° and is caused to flow locally within the area of the die, by the mandrel's rotary action. This method is executed in a system where in the gap's output area there is a wedge to deflect the direction of exit of the material fed by the rotating infeed wheel, and in the space between the friction block and the deflection wedge there is a mandrel caused to cyclically move bidirectionally at frequency of (0.1-10) Hz, whose face contacts the material in the area of transfer into the die.

Abstract: An extruding press comprising: a die platen element (25) with an extrusion matrix (24) from which an extruded product comes out; a main cylinder (21); longitudinal columns (29) connecting the die platen element (25) to the main cylinder (21); a multiple equipment provided with at least two containers (23?, 23?) for housing the billets, and comprising an external, longitudinally moving, cross element and a transversally moving ram inside said cross element which comprises the containers; means for longitudinally moving the cross element and means for transversally moving the internal ram to make one of the containers (23?, 23?) face the extrusion matrix (24) and make one or more of the other containers be in front of the billet introducing means (30) at the same time as said extrusion of the billet.

Abstract: An apparatus and method for moving a wire along its own axis against a high resistance to its motion causing a substantial uniaxial compression stress in the wire without allowing it to buckle. The apparatus consists of a wire gripping and moving drive wheel and guide rollers for transporting the moving wire away from the drive wheel. Wire is pressed into a peripheral groove in a relatively large diameter, rotating drive wheel by a set of small diameter rollers arranged along part of the periphery causing the wire to be gripped by the groove.

Abstract: This invention provides a billet-rearranging device which receives billets fed in a row and rearranges two billets in tandem. The billet-rearranging device “A” is disposed between a chute “S” with an outlet to feed billets “b” in a row to the device “A” and a charger “Cg” with a holder unit “B” with two holders “B1” and “B2” to hold two billets “b” in tandem and has a billet-rearranging mechanism to rearrange two billets “b” in tandem and feed them to the holder unit “B” of the charger “Cg.” The billet-rearranging mechanism comprising (i) an upper slide plate 1 positioned below the outlet of the chute “S”, (ii) a lower slide plate 2 positioned below the upper slide plate 1, and (iii) a fixed plate 3 positioned below the lower slide plate 2, above the holder unit “B” of the charger “Cg.” The upper slide plate 1 has the function of rearranging two billets “b” in tandem. The lower slide plate 2 has the function of feeding two billets “b” in tandem one by one to the fixed plate 3.

Abstract: An apparatus and method for moving a wire along its own axis against a high resistance to its motion causing a substantial uniaxial compression stress in the wire without allowing it to buckle. The apparatus consists of a wire gripping and moving drive wheel and guide rollers for transporting the moving wire away from the drive wheel. Wire is pressed into a peripheral groove in a relatively large diameter, rotating drive wheel by a set of small diameter rollers arranged along part of the periphery causing the wire to be gripped by the groove.

Abstract: An extrusion press comprising a control apparatus for handling the container is described, comprising one or more pairs of control cylinders (40, . . . 43) for handling the container, provided with piston sliding chambers fixed to the container (35), one cylinder of said pair having the rod facing the die platen (25) of the press, the other cylinder of said pair having the rod facing the main cross-piece (20) of the press.

Abstract: An extruding press comprising: a die platen element (25) with an extrusion matrix (24) from which an extruded product comes out; a main cylinder (21); longitudinal columns (29) connecting the die platen element (25) to the main cylinder (21); a multiple equipment provided with at least two containers (23?, 23?) for housing the billets, and comprising an external, longitudinally moving, cross element and a transversally moving ram inside said cross element which comprises the containers; means for longitudinally moving the cross element and means for transversally moving the internal ram to make one of the containers (23?, 23?) face the extrusion matrix (24) and make one or more of the other containers be in front of the billet introducing means (30) at the same time as said extrusion of the billet.

Abstract: The stem slide device of the present invention in an extruder has a stem vertical movement support (71) and slide guide members (72-1, 2) fastened to the support and forming guide grooves. A stem (6) pushing against a billet loaded in a container is held at the slide table (73) horizontally. The slide table slides in the vertical direction along the vertical face of the support. When the slide table is positioned at the bottom end of the guide groove, the hydraulic cylinders (77-1, 2) are driven so that the rods (78-1, 2) push the back surface of the slide table against the vertical face of the support. Therefore, the axis of the stem is held matched with the axis of the container.

Abstract: A method of making a steel core brass stair rod includes placing a brass billet into a chamber of an extrusion apparatus, where the brass billet includes an aperture configured to receive a steel core. The brass billet is heated to a temperature at which the brass billet is pliable. The brass billet and the steel core are co-extruded through a die of the extrusion apparatus such that the brass billet forms a brass shell which is fused to the steel core, where there is no air gap between the brass shell and the steel core.

Abstract: Disclosed is an extruding press (1) for billets and tubes, comprising a press frame (2) which is composed of a cylinder-type bar (3) and an opposite bar (6) that is connected thereto. A movable running bar (6) and a movable receiving device (7) are disposed within said press frame (2), the receiving device (7) displacing a block (9) that is introduced with the aid of a charging apparatus and is to be pressed in front of the opposite bar (5) encompassing a matrix. A multifunctional robot (12) which can be moved on a linear guide (11), acts independently of the movements of the press, and is equipped with a receptacle head (13) is assigned to the press frame.

Abstract: A method for producing a formed body including the steps of introducing a fluid material supplied from two or more material supply holes of a rectification plate into a drawing die, homogenizing the flow rate distribution of the fluid material in the drawing die using one or more wires stretched from the material supply holes to near the exit section of the drawing die, and extruding the fluid material from the exit section of the drawing die in which a prescribed forming pattern is formed by two or more wires. The wires form hollow holes through the formed body.

Abstract: The invention relates to an extruder and pipe extruder (1), comprising a press frame (3) consisting of a cylinder bar and a counter bar (2) connected thereto, wherein a linear displaceable receiver carriage (5) is arranged, said carriage consisting of a receiver holder (6) which concentrically encompasses a block receiving element (7) and transports a block, which is charged with a charging device and which is to be pressed in a press position in front of a die associated with the counter bar (2), wherein the receiver holder (6) is maintained therein in a self-supporting manner in relation to the receiver carriage by means of air (2). The receiver holder (6) is provided with carrier webs (13) which are arranged on two sides in the middle of the press (12) and which project in a diametrically outward manner, being suspended in the recesses (14) of retaining blocks (15) of the receiver carriage (5).

Abstract: A shear deformation apparatus comprises: a die having an inlet and an outlet; and a rotatable device installed at a shear zone for supporting a material introduced into the inlet of the die and thus changing a direction of the material to the outlet of the die, of which the surface moves together with the material. According to the apparatus, a frictional resistance between the material and the die is reduced and a generation of a dead zone is prevented, thereby reducing a deformation resistance and having a uniform shear deformation.

Abstract: A process and apparatus for extruding aluminum into products, wherein aluminum logs are first heated to a predetermined temperature in a furnace, then are cut into billets of predetermined lengths, and then the billets, while still hot, are extruded into predetermined products in an extruder. In the process, the logs are cut into billets with a cross cut circular saw immediately after the logs are heated and before the logs are permitted to cool to a temperature below a suitable extruding temperature. The circular saw is cooled and lubricated during the cutting to as to restrain the saw from sticking in the heated aluminum and so as to maintain the temperature of the log at the cut within a predetermined range wherein the aluminum is relatively easy to cut and waste is minimized.

Abstract: A method of processing a billet of metallic material in a continuous manner to produce severe plastic deformation. The billet is moved through a series of CSPD dies in one operation to efficiently produce a billet characterized by a controlled grain structure. The long billets of metal stock are moved along the processing path through the CSPD dies with plural sets of pinch rolls which grip the billet and push it into the entry channel of the dies. Other sets of pinch rolls pull the billet from the exit channel of the dies.

Abstract: A method of manufacturing lithium or lithium alloy anodes for electrochemical cells by an extrusion process wherein a lithium or lithium alloy ingot is formed into a thin sheet. The method is adapted to extrude thin sheet having a width exceeding the diameter of the lithium or lithium alloy ingot and enables the extrusion of lithium or lithium alloy thin sheets with more than one lithium or lithium alloy ingot. The invention also provides a die assembly adapted to allow adjustment and fine tuning of a die aperture while the extrusion process of a lithium or lithium alloy ingot is being carried out.

Abstract: A method for extruding a profile or a similar billet from a bolt or bar that is guided in a recipient bore of a recipient and that is extruded by an extrusion die through a shaping section of a shaping tool. Once the front face of the bar is placed on the rear surface of a preceding bar, air or similar flowing agents present on the surfaces are discharged during pressure build-up in an approximately radial relation together with the contaminations that are present in detached form on the transversal bur surface. During pressure build-up, parts of the transversal burs are radially displaced; the displaced parts of the traversal bur surface are discharged on the periphery in an approximately radial relation before the bar enters the shaping tool. To achieve this, a welding chamber or pre-chamber is disposed in the direction of extrusion (x) in a gap that can be adjusted between the recipient and the shaping tool.

Abstract: An automatic extruding machine includes a base member, a molding device mounted on a middle portion of the base member, an input extruding device mounted on the base member and connected to the molding device, a feeding device mounted on the base member below the input extruding device, an output extruding device mounted on the base member and corresponding to the input extruding device, an exporting device mounted on the base member below the output extruding device and a cutting device mounted on the top of the molding device toward the input extruding device. The automatic extruding machine in accordance with the present invention further comprises a control unit provided to control the above devices to automatically finish the extruding process.

Abstract: The present invention relates to a continuous shear deformation device. In order to occur shear deformation at the position at which a material is inserted into a molding path from a rotary guide apparatus for the purpose of solving the problem that the amount of shear deformation of a material is non-uniform and insufficient due to the gap between the curved portion of the molding path and the lower parts of the material, there is provided a continuous shear deformation device, characterized in that a curved portion is constructed by collaboration between the rotary guide apparatus and the molding path. In addition, there are provided additional constructions for effectively performing shear deformation by a small power by reducing the friction at the molding path excepting the curved portion. The present invention thusly constructed can be utilized for continuously and effectively mass-produce sheared materials.

Abstract: In a process for the manufacture of a shaped bar consisting of an at least partially metallic material, a preform is shaped to form the shaped bar in the partially solid/partially liquid state and the shaped bar in the partially solid/partially liquid state is guided through a chilled mould for setting. An optionally heatable preform chamber is provided for receiving the preform, an optionally heatable forming chamber is connected to the preform chamber for shaping the preform to form the shaped bar, and a chilled mold is connected to the forming chamber for the setting of the shaped bar. A die can optionally be arranged immediately downstream of the mould for the final shaping process and the device.

Abstract: To achieve the precise arrival of a carrying part at the required positions, despite the very high translatory or swivelling speed of the loading apparatus, it comprises a base translatory part, which is movable transversely to the press axis on a base guide, or a base swivelling part, which is swivellable in a plane transverse to the press axis about a base bearing, and a secondary translatory or swivelling part which is equipped with the carrying part and is movable on the base translatory or swivelling part. The translatory travel of the base translatory part or the swivelling angle of the base swivelling part, on the one hand, and the translatory travel of the secondary translatory part or the swivelling angle of the secondary swivelling part on the base translatory or swivelling part, on the other hand, correspond in each case to one of the travel or angular dimensions between the charging position and the intermediate station and between the intermediate station and the press axis.

Abstract: The object of the invention is to apply an appropriate temperature profile to a bloc to be extruded, at which the extrusion process may be optimized For that purpose, the metal blocks (10a) to be extruded are heated (furnace 2) up to an appropriate extrusion temperature for that metal, are stored at that temperature (holding chamber 3) and are chilled (chamber 5) according to regulation areas (18) in synchronism with the extrusion cycle. Regulation in the areas (18) is carried out by influencing the amount and/or temperature of the coolant, and/or cooling duration, so that an axial and radial temperature distribution is obtained at the block.

Abstract: A work method for loading an extrusion billet using a billet loader into the billet chamber of a metal extrusion press and a metal extrusion press for extruding sections through a die using an extrusion ram. Whereby the loading can be carried out regardless of the position of the billet chamber and the movement upon the removal of the extrusion residue. The metal extrusion press has a billet loading device coupled to the billet chamber and movable jointly with it in and opposite to the extrusion direction. The extrusion ram can be positioned spaced from the billet chamber by at least the length of an extrusion billet.

Abstract: An apparatus has first propellers (20) and second propellers (21) alternating with the first propellers. Each propeller has one or more helical biting edges (24a) protruding into a guide passage (28) through which a raw material (W) advances. The biting edges are formed along an inner periphery of each propeller at a predetermined lead angle so as to bite an outer periphery of the raw material (W). The apparatus further has a drive mechanism for rotating the first propellers (20) in a direction opposite to that in which the second propellers (21) are driven. The helical biting edges (24a) are inclined such that the raw material (W) may be forced towards a pressure vessel (2) by all the propellers, notwithstanding the opposite directions in which the first and second propellers ape driven, so that a strong thrust is applied to the raw material, without causing any torsion of the material which is being forced towards the pressure vessel.

Abstract: A billet fed extrusion press comprises a rotating arm (46) on a movable cross member (28). The arm carries a plunger (48) and a billet loader (50) spaced from each other, and can be rotated between a condition in which it brings the plunger into a working position in alignment on extrusion axis (a) of the press and the loader (50) into a billet receiving position on one side of the press, and a condition in which it brings the loader into a billet loading position along the axis (a) of the press and the pusher into a rest position on the said one side of the press.

Abstract: The specification discloses a dynamic self-adjusting taper quenching system for producing isothermal extrusions in a nonferrous extrusion operation. The quenching system includes a quenching unit, a computer for controlling the quenching unit, and an interface for reading the extrusion press ram pressure. A target quenching profile is stored in the computer. The computer samples the ram pressure during extrusion of a quenched billet and adjusts the target quenching profile for subsequent billets as a function of the sampled pressures.

Abstract: A method for feeding billets in horizontal extruding presses which comprises the opening of the container, the cutting off of the surplus of the billet extruded simultaneously to the supplying of a new billet in line with the container and to a simultaneous withdrawal of the press shank after each extruding operation and with the withdrawl of the main piston; then the advancing of the pusher for the insertion of a new billet into the container which is still open and the simultaneous withdrawal of the billet shear and of the feeder means for the supplying of the billet; the closing of the container when the pusher retracts and the movement of the press shank on the axis of the container; finally the advancing of the main piston for the inserting of the press shank into the container for the extrusion operation.

Abstract: The invention relates to a method for manufacturing metal objects, particularly non-ferrous metal objects, by means of extrusion. According to the invention a casting with a cast structure is conducted at or about ambient temperature to the extrusion device, and the casting is subjected to extrusion, at a reduction ratio of at least 80%, within its recrystallization region. The extrusion is carried out according to the Conform method.

Abstract: A method and apparatus for conditioning an aluminum billet for extrusion from an extrusion press. The billet is first heated above the solutionizing temperature for the MgSi phases in the aluminum matrix, then the billet is cooled below the solutionizing temperature to an adequate hot working temperature. Preferably, a temperature gradient is created along the length of the billet wherein one end of the billet is at or above the hot working temperature and the other end of the billet is cooled to a temperature below the hot working temperature. Thereafter, the billet is placed into the extrusion die, the hot end adjacent the die and the cool end adjacent the ram of the extrusion press. The billet is then extruded producing an extruded product with uniform properties along the length of the product with minimal defects such as tearing or hot shorting.

Abstract: A method and apparatus for extruding metal using the reverse method in which a billet placed in the bore of a container is compressed between a base and an extruding block. Billets are extruded in the raw state without prior removal of the outer layer, leaving a play sufficient to form a sleeve of a thickness at least equal to that of the outer layer to be removed, between the periphery of the block and the inner face of the bore, along the inner face. The bore is then scraped, using a scraping block whose periphery is separated from the inner face of the bore by a play which is less than the thickness of the sleeve but sufficient for the sleeve to be removed over a part only of its thickness.

Abstract: Apparatus for the extrusion of metal in the form of billets (4) cut to order from bars (44, 45) previously heated in a furnace (31), comprising an extrusion press (1) associated with a member for transferring each billet (4) to be extruded, parallel to itself, from a stand-by position (A), after cutting, to a loading position (C) in the axis of the press (1). For transfer of the billets the apparatus has a single member (2) moveable transversely to the extrusion axis and equipped with a gripper (5) of variable width, comprising at least two telescopic jaws associated with a device (6) for adjusting the extended lengths of the telescopic parts, such that each jaw covers a width substantially equal to the length of the billet.

Abstract: The present invention provides a method and apparatus for a forwardly extruding superalloy parts. The method provides for extruding metal parts from a superalloy material in an extrusion press having a lower press table assembly accommodating the extruded part; and extrusion pot and an extrusion die located on the lower press table assembly; and an upper plunger reciprocally movable with respect to the lower press table having an extrusion punch mounted thereon.

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container.

Abstract: A process for producing a liquid-solid composition comprising heating a liquefiable material sufficiently to form a liquid phase with solid dendritic particles therein without completely liquefying the material and subjecting said liquid-solid material to a shearing action sufficient to break at least a portion of the dendritic structures. The process includes injection molding, forging or die casting the material produced by the process.

Abstract: A process for forming a liquid-solid composition from a material which, when frozen from its liquid state without agitation, forms a dendritic structure. A material having a non-thioxotropic-type structure, in a solid form, is fed into an extruder. The material is heated to a temperature above its liquidus temperature. It is then cooled to a temperature less than its liquidus temperature and greater than its solidus temperature, while being subjected to sufficient shearing action to break at least a portion of the dendritic structures as they form. Thereafter, the material is fed out of the extruder.

Abstract: Apparatus and method for coating a high tensile strength fibrous material with an extrudible, corrosion-resistant metal to form a composite, continuous wire using dies, a compression cylinder in fluid connection with the dies, a piston for forcing the metal out of the compression cylinder and through the dies and a mechanism for feeding a fibrous material through the dies as the metal coating is extruded out the dies with the fiber. Continuous lengths of a composite material made by such a method, electrode grids comprised of the composite material made by such a method and a cabled composite wire constructed of the composite material made by such a method. Also, series and parallel connected cells comprising a battery utilizing such electrode grids.

Abstract: A method of loading billet in the indirect extruding press for an alignment of the billet in which, after the billet (10) is held between the dummy block (11) at the side of the extruding stem (4) and the surface of the dies (6) of the dies stem (3), the container (1) is moved toward the side of the billet (10), thereby preventing the blockage of the billet and enabling the obtaining of pipes of a good roundness precision and a reduction in the thickness deflecting ratio of the pipes.

Abstract: A continuous extrusion machine, in which feedstock is admitted (at 50) to a peripheral groove (12) in a rotating wheel (10), is enclosed in that groove by a cooperating shoe (24), and is frictionally dragged along an arcuate passageway (48) formed by said groove and a projecting portion (30) of said shoe towards an abutment (36) carried by the shoe. The abutment tip and adjacent wheel parts disposed downstream of the abutment are cooled directly by a jet of cooling fluid issuing from a nozzle (64) carried downstream on the shoe. An annular band (FIG. 2, 74) of a good thermally-conductive metal embedded concentrically in the wheel enhances the cooling obtained. The extrusion apparatus yields a metal product (FIG.

Abstract: An indirect extrusion press in which a seal block (16) is provided with a disc portion (18) to be fitted in a billet receiving bore (25) of a container (24) and is also provided with a cylindrical portion (19) contiguous to the disc portion (18) and having an outside diameter larger than the billet receiving bore (25) which is provided at the fore end of a pressure stem (15), and a die stem (21) is disposed in front of and coaxially with the pressure stem (15). Billet (V) is loaded onto an axis of the press by means of a billet loader (29), then charged into the billet receiving bore (25) of the container (24) from the pressure stem (15) side and then extruded through the die stem (21) in a state wherein one end of the billet receiving bore (25) of the container (24) is closed with the seal block (16).

Abstract: A rotary head for use in an apparatus for forming a stranded wire, the apparatus including an inner rotating body rotating about a predetermined axis, an outer rotating body surrounding the inner rotating body to define an annular space between the two bodies, which rotate about the same axis, and a guide member provided at a first end portion of the annular space to guide wire stock. The rotary head is located at a second end portion of the annular space, has cutters and rotates in a predetermined direction, and also has plural pairs of projections extending on the outer rotating body side of the annular space and the inner rotating body side thereof, with a predetermined gap therebetween, the cutters being provided in the vicinity of the gap.

Abstract: A friction-actuated extrusion process comprising pickling the metal to be extruded before it is granulated and used as the in-feed for the process.

Abstract: In a continuous friction-actuated process for the extrusion of copper, a passageway 3 is formed between an arcuate first member and a second member in the form of a wheel 1 having a circumferential groove 2 formed in its peripheral surface into which groove the first member projects. The wheel is rotated and metal is fed into the passageway at one end and extrudes from the passageway through at least one die orifice 6 located in or adjacent to an abutment member 5 extending across the passageway at the other end thereof. The abutment member is of substantially smaller cross-section than the passageway so as to leave a substantial gap between the abutment member and the groove.

Abstract: An indirect extrusion press including a die assembly having a loose die detachably mounted on a die stem and axially movable relative to a billet container for extruding a billet through a die hole, and a die handling mechanism for transferring the die assembly between the press center and a position outside the press machine, the indirect extrusion press including a reduced diameter portion provided in the rear end portion of the die stem and defining a stepped wall portion; a loose die detachably mounted on the end face of the reduced diameter portion; and a detachable cleaning ring loosely fitted on the reduced diameter portion of the die stem in abutting engagement with the stepped wall portion and in axially spaced relation with the loose die, the cleaning ring being in sliding engagement with the inner periphery of the billet container in the extruding phase of the press operation to remove container shells.