Abstract: An extrusion press including butt shearing means and cooperating die receiving and holding means carried by the crosshead which supports the free end of the main ram.

Abstract: After extrusion in an indirect metal extrusion press a removal arm, the end of which carries a holding sleeve for a die, a discard and a closing plate, is swung into the press axis between the billet carrier and the closing ram. The sleeve is divided into two transversely to the press axis. One part is fixed to the arm and clamps the die, while the other part receives the discard and the closing plate and can be displaced axially in the direction of the closing ram from the fixed sleeve part, the discard and the closing plate attached thereto being released. An hydraulically displaceable clamping seat provided on the removal arm and comprising respective pairs of grippers moves from below up to the closing plate and the discard and embraces them. During the operation to shear the discard from the extruded billet present in the clamped die the discard and the closing plate are moved downwards in a controlled manner.

Abstract: An indirect extrusion press has a die and die holder 20 and a sealing plate to close the billet carrier. After extrusion, a one-piece or two-part holding sleeve is placed between the sealing plate and the sealing stem and the latter is advanced to push the billet carrier over the die stem thereby expelling the sealing plate, the butt end of the billet, and the die holder into the sleeve. A shearing device then shears off the sealing plate and butt end, the second part of the holding sleeve moving aside with the sealing plate and butt end in it. The die holder is clamped in the holding sleeve which is pulled away from the billet carrier to separate the die from the extruded product. In the case of a one-piece holding sleeve, a transverse aperture is provided to allow the shearing operation.

Abstract: This invention provides an indirect metal extrusion method, in which free die system is adopted. A die (8) of two-stepped structure is capable of removing shell or outer layer of a billet simultaneously at the time of extrusion, and eliminating the container cleaning cycle after the extrusion. Besides, a shear support (3), an independent body of the container (2), is disposed on the nearer side of the container (2) to an extrusion ram (4), so that discard integrally clung to the die (8) may be served after finishing of an extrusion stroke off the die (8) which is rested on the shear support (3) by means of a shear (14) or a shearing apparatus. This method enables shortening of the extrusion cycle and eliminating damage to principal structure of the extruder.

Abstract: A method for cleaning inner surfaces of a container on an indirect extrusion press, using a loose die including an extruding die portion and a separable cleaning die portion. The die is continuously used after contributing to the cleaning in each cycle of press operation, replacing the cleaning die portion alone in an ejected position after extrusion of a billet.

Abstract: An extrusion press having a die slide assembly capable of shearing the extrusion in the die, and transporting the die to a side movable transfer table for change thereof, the assembly eliminating excessive projection beyond the confines of the extrusion press of die transport equipment. The die slide assembly includes a first hydraulic cylinder for shearing an extrusion from the die, and a second hydraulic cylinder mounted adjacent the first cylinder for transporting the die and die holder to a transfer station on the side of said platen, permitting an exchange of the die holder die therewith, when necessary. The second hydraulic cylinder is movable with the die slide assembly to minimize the length requirements of the second hydraulic unit and still effectuate full traverse of the die holder.

Abstract: A pull-back type indirect extrusion press is designed so that the scalping of billets can be effected inside the press independently of extrusion cycles and the scalped billet is allowed to stand by in a billet extrusion standby space which is provided with a heating element to heat the standby billet to maintain the same at a required temperature and into which a billet oxidation-preventive gas is admitted to prevent oxidation of the standby billet.

Abstract: In an indirect extrusion press of the type wherein a die stem is connected to a press axis on the rear end surface of a press platen and extends towards a container, an intermediate frame type indirect extrusion press including an intermediate frame movably interposed between the press platen and the container in the direction of the press axis, encompassing the die stem and equipped with a guide section in its longitudinal direction, a driving device for moving the intermediate frame in the direction of the press axis and a guide mechanism placed between the intermediate frame and press structures such as a press bed, a column and the like and guiding the intermediate frame in the direction parallel to the direction of the press axis.

Abstract: A die stem and a billet-receiving sleeve extend rearwardly from an extrusion apparatus platen slide that is movable laterally from a first position in which the stem is aligned with a billet container passage behind it to a second position in which the sleeve is aligned with the passage. An extrusion stem behind the container is movable forward through the passage, and there is means behind the sleeve in the first position for pushing a hot billet into the sleeve. A die slide carried by the container and holding a die is movable laterally across the container from an inner position aligned with the container passage when the platen slide is in its first position to an outer position aligned with the die stem in the second position of the platen slide. In the sleeve there is means for pushing a billet out of the sleeve in the second position of the platen slide and into the container as the container is moved forward toward the sleeve.

Abstract: A press operated by the reverse method comprising a fixed tubular die casing defining a pressing axis, a main jack operative to displace a cross beam supported for displacement along the pressing axis, a displaceable holder disposed between the cross beam and the tubular die casing and having a bore disposed along the pressing axis for receiving a billet to be pressed. The bore has open ends and the holder is capable of fitting over the die casing by axial displacement thereof. A closure member is carried by a slide for closing one end of the bore in the holder; the slide is displaceable on the cross beam transversely with respect to the pressing axis. A support is slidably mounted parallel to the slide and is carried by an auxiliary cross beam which is slidably mounted on the main cross beam for movement parallel to the pressing axis. The support and the slide are simultaneously displaceable under the action of a jack or other suitable device.

Abstract: A cutting device for a direct extrusion press is intended to shear the residue remaining in the press cylinder after extrusion of the useful part of the billet to separate the residue from the extruded product. The device comprises a plane blade which is displaceable in a direction perpendicular to the extrusion axis between operative and inoperative positions and is guided in its displacement by guide means and displaced by drive means both of which are mounted on the slide block of the press.

Abstract: A die holder has adjacent to its front end an annular step portion comprising a steep wall and a gradual wall tapered from the steep wall to the front end, the annular step portion being adapted to provide an annular space between the step portion and an inner surface bounding a billet receiving bore in a container when the die holder is inserted in the bore. During indirect extrusion, foreign impurities such as dirt, lubricant, metal oxides, and the like deposited between the bore surface and the billet are trapped and collected in the annular space against entrainment into an extruded product being formed. An annular ring partly defining the steep wall acts as a barrier that prevents the impurities from getting therepast and minimizes skull formation on the bore surface. An annular butt formed by accumulations of the impurities in the annular space and a butt end of the billet are removed from the container by means of a shear.

Abstract: A single step in the form of a heavy forward displacing forging operation is used to manufacture cylindrically bored ferrous-metal multiple diameter nozzles with an outside diameter of at least 22 inches, weighing at least 4,000 lbs. and possessing an exterior configuration comprising a round cylindrical base section of largest diameter with an outwardly-extending flange at one extremity, spaced second cylindrical section of smaller diameter, and an interconnecting and intercommunicating frusto-conical section.

Abstract: A device for extruding ingots, in particular for extruding light metal ingots through a shaping die placed downstream of the ingot, is provided with a scalping facility for removing an outer layer of the ingot immediately prior to extrusion. The said scalping facility is made up of a plurality of blades or similar scalping facilities which together form a scalping ring and can be moved radially with respect to the direction of extrusion, and can be released from the ingot.

Abstract: In the direct extrusion of tubing wherein the extruded tube or tubing is immediately submerged into water after extrusion and having a closed leading end, the trailing end thereof in the extrusion press is sealed off from the entrance of water by a crimping device consisting of a tool having a rounded front end which engages and forces through the operation of a piston cylinder assembly one wall inwardly of the trailing end against an opposed wall to form a collapsed double wall cross section.

Abstract: A far less expensive process of manufacturing heavy-duty welding necks, nozzles, and similar connector elements comprising cylindrical bodies with a radial flange at one end, is provided through the utilization of a centered metal-displacement disc which contacts a radially flanged heated billet after the forging operation and forces the metal under the centered disc and interiorly of the radially-flanged portion into the die cavity and around a rounded centrally disposed supporting member which initially is in contact with the underside of the work-piece. This forward displacement action is continued until the advance portion of the work-piece contacts a circular forging knife which is carried on the interior of the female forging die member.

Abstract: A die holder has adjacent to its front end an annular step portion comprising a steep wall and a gradual wall tapered from the steep wall to the front end, the annular step portion being adapted to provide an annular space between the step portion and an inner surface bounding a billet receiving bore in a container when the die holder is inserted in the bore. During indirect extrusion, foreign impurities such as dirt, lubricant, metal oxides, and the like deposited between the bore surface and the billet are trapped and collected in the annular space against entrainment into an extruded product being formed. An annular ring partly defining the steep wall acts as a barrier that prevents the impurities from getting therepast and minimizes skull formation on the bore surface. An annular butt formed by accumulations of the impurities in the annular space and a butt end of the billet are removed from the container by means of a shear.

Abstract: A gate lock housing mounted against the rear face of the front platen of an extrusion press has a passage through it aligned with a passage through the platen. A tubular block is normally disposed in the housing passage where it is held by releasable gate lock means. Behind this block is a laterally movable carrier, in which is seated a bolster member having a passage through it aligned with the block passage. An indirect-extrusion stem secured to the bolster extends rearwardly from the housing and supports an extrusion die at its rear end. The bolster is connected to the block in such a way that the bolster can be moved forward with the block but can move laterally away from the block when they are in their rear position. Shifting means detachably connected with the carrier can slide the bolster and stem laterally away from the block and out beyond one side of the housing, where the carrier can be supported while being disconnected from the shifting means.

Abstract: A process for continuous and repetitive production of discrete articles of a desired cross-section from a deformable material can be effected by introducing the material into a moving passageway, causing the material to be drawn along the passageway by frictional drag, and, by blocking the passageway, compressing the material and causing it to enter into successively presented chambers shaped to produce articles of the desired configuration. Optionally the articles can be ejected from said chambers to enable the latter to be re-used. Apparatus for performing this process is also disclosed.

Abstract: An improved apparatus for metal extrusion comprises a main container for receiving a billet as a material to be extruded, a press stem with a splitting disc in the front thereof for pushing the billet, a die assembly retaining a die for extruding the product, and a holding means such as a sub-container located between the main container and the die-assembly for retaining extrusion remnant or butt. An improved extrusion method is also disclosed comprising feeding the billet to the rear end of the main container by means of a billet loading means, inserting the billet into the container by means of the stem provided with a detachable disc or undetachable one in the front thereof, extruding the billet through the die by moving the stem toward the die while longitudinally splitting apart billet "shell" or crust produced during the extrusion into a plurality of strips or pieces, and retracting the stem to the original position. Each of the metal extrusion steps are repeated sequentially in the preset order.

Abstract: An extrusion press for indirect extrusion has a sealing plate at one end of the bore of the billet container. This sealing plate extends a certain distance into the bore where it provides a seal against the wall of the bore. The plate also has a recess for accommodating a dummy block during extrusion, and a piston is provided behind the sealing plate to push the dummy block and butt end out of the recess at the end of extrusion.

Abstract: A separating device for separating the ring-shaped press skin from a composite extrusion disc comprising a press disc and a stripper disc, especially for copper containing alloys and difficult to press metals and alloys, according to which the press disc is spaced from the stripper disc by an annular intermediate space for receiving the press skin. The device includes a separating head with a passage or recess into which project two blocks located opposite to each other. When the combined extrusion disc on its way through the passage passes between these blocks the projecting blocks enter the intermediate space for stripping off the press skin. The distance between the straight guiding means of the blocks is located within a range of from the length of the inner diameter of the combined extrusion disc to a length composed of the length of the inner diameter plus about the thickness of the press skin.

Abstract: A device for removing the press rest from the front side of a press disc for extruding tubes which has a substantially plane rear surface opposite the front side of the press disc. This disc comprises supporting means for supporting and holding the press disc from which is stripped a press rest. The device also comprises shearing means having a shearing surface which, when the press disc from which the press rest is to be stripped, rests on the supporting means, defines an obtuse angle with the rear surface of the disc. The disc and the shearing means are movable relative toward each other so as to cause the shearing means in response to such movement to strip the press rest off the press disc.

Abstract: An extrusion press for indirect extrusion has a sealing plate at one end of the bore of the billet container. This sealing plate extends a certain distance into the bore where it provides a seal against the wall of the bore. The plate also has a recess for accommodating a dummy block during extrusion, and a piston is provided behind the sealing plate to push the dummy block and butt end out of the recess at the end of extrusion.