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: A process for extruding a section or the like from a billet, in which a billet is introduced into the bore of a container and, by an extrusion stem, is fed in the direction of extrusion into a shape-forming cross-sectional opening in a die. The billet material is pressed into a central inlet in the die and the resultant ductile mass fed outwards at an angle to the direction of extrusion through a plurality of channels to the shape-forming cross-section. The main load is applied by the extrusion force acting outside the central inlet and the shape-forming region and is preferably diverted outside the shape-forming region to the supporting die parts.

Abstract: A process for extruding a section or the like body from an ingot is such that an ingot is introduced into a bore of a container and, by means of an extrusion stem, is fed in the direction of extrusion into a shape-giving opening in a die. Before the ingot enters the die opening, it is pushed out of the container by an amount corresponding to the width (t) of a collar whereupon a disk-shaped slice is sheared off the free end of the ingot and removed. The free end of the ingot is then pushed onto the die opening. In order to carry out this process a shearing tool is provided after the end of the container facing the die and a moveable shearing blade positioned over that entrance to the container boreThe disk-shaped slice should preferably be sheared away together with a residual butt of the previously extruded ingot which faces away from the die. To that end a shearing tool with two shearing blades is provided and can be moved radially with respect to the longitudinal axis (A) of the container bore.

Abstract: A process for extruding a section or the like body from an ingot is such that an ingot is introduced into a bore of a container and, by means of an extrusion stem, is fed in the direction of extrusion into a shape-giving opening in a die. Before the ingot enters the die opening, it is pushed out of the container by an amount corresponding to the width (t) of a collar whereupon a disk-shaped slice is sheared off the free end of the ingot and removed. The free end of the ingot is then pushed onto the die opening. In order to carry out this process, a shearing tool is provided after the end of the container facing the die and a movable shearing blade positioned over that entrance to the container bore. The disk-shaped slice should preferably be sheared away together with a residual butt of the previously extruded ingot which faces away from the die. To that end, a shearing tool with two shearing blades is provided and can be moved radially with respect to the longitudinal axis (A) of the container bore.

Abstract: A process and device for manufacturing a section, in particular a hollow section, especially from light metal billets. To this end a plurality of billets is simultaneously forced through the shape-giving cross-section of a die and united to form the matrix metal for the section. For this purpose at least two bores in the container are aligned with the shape-giving cross-section of the die.

Abstract: A process and apparatus for the indirect extrusion of hollow sections over a mandrel having a diameter d.sub.D from a plurality of billets each having a diameter d.sub.on wherein the volume throughput of metal is greater than that obtained by the indirect extrusion over a mandrel of said hollow sections from a single hollow billet under the same extrusion force thereby increasing productivity wherein the diameter of the mandrel d.sub.D with respect to the diameter d.sub.on of the billet to be extruded over the mandrel is d.sub.D <0.4 d.sub.on.

Abstract: A process for extruding a metal billet, in particular a light metal billet in an extrusion container, into the form of a hollow section through a shape-giving orifice in a die having a mandrel which determines the inner contour of the hollow section, and a device with stem for extruding should be designed such that it is possible to produce flanged tubes with integral flange in one piece. This object is achieved by way of the invention in that in the extrusion of the hollow section an integral flange is produced, preferably at the end of the extrusion stroke. In the extrusion press suitable for this purpose a shaping recess is provided, with respect to the extrusion direction, immediately before the orifice of the die, the radial dimension of which is greater than the width of the die orifice. As such it should be possible to separate the die radial to the extrusion direction into at least two parts.

Abstract: A device for indirect extrusion of a hollow section from a billet, in particular a hollow aluminum billet, which is presented to a shape-giving orifice of a die, which is such that a container can be passed over it, thus enclosing the die, and features in its orifice a mandrel that determines the inner contour of the hollow section. A shaping recess is provided, with respect to the extrusion direction x, immediately in front of the shape-giving orifice of the die, the radial dimension of which recess is greater than the width of the shape-giving orifice. The shaping recess is provided either in the face of the die directed towards the extrusion stem or in the face of the extrusion stem directed towards face of the die.

Abstract: Manufacture of a light metal shock absorber by impact extrusion of a light metal blank whereby, during the impact extrusion process itself, a steel strip is brought into contact with the base of the part which becomes free of obstructive light metal oxide as a result of impact extrusion and is as a result metallically bonded to the said base. The steel component of the composite body is provided with a steel ring which is welded or otherwise appropriately joined during or after the extrusion step. The light metal sleeve can be welded or otherwise appropriately joined to light metal after impact extrusion. The production of a light metal shock absorber is a special case of plastic deformation of light metal and the principles which lead to metallic bonding between light metal and steel or another metal are also valid here.

Abstract: Manufacture of a light metal shock absorber by impact extrusion of the light metal of a steel-light metal composite blank, wherein the metallic bonding of the composite blank is achieved by coextrusion. The steel component on the bottom face of the light metal shock absorber is provided with a steel ring which is welded or otherwise appropriately joined during or after impact extrusion. Also the light metal sleeve of the shock absorber can, after impact extrusion, be welded or otherwise appropriately joined to light metal.

Abstract: A process allows the production of composite sections made of at least two component parts such as conductor rails or the like having a beam-like section with a facing in the form of a conductive metal strip. The process makes use of an extrusion die whereby at least one of the components of the composite section is fed to the die by means of frictional force on a face which moves continuously towards the die.

Abstract: A composite section comprises a beam-like section which may in particular be made of a light-weight metal, and a facing of at least a part of at least one face of the beam-like section made of another metal. The beam-like part is produced by extruding a billet of metal through a die, and at the same time the facing strip is fed through the shape-giving opening in the die. In order to provide an oxide free surface on the extruded beam-like part which is capable of bonding to the surface of the facing strip it is necessary, when using an unscalped billet, that the ratio of the maximum radius of the feed chamber of the die to the minimum radius of the container passage of the die be less than or equal to 0.8. Inside the die there is provided at least one moving face which may e.g. be in the form of a wheel, over which the facing strip passes in being fed to the die opening. Also the strip can be deformed during feeding or extrusion to provide a variety of shapes.

Abstract: A composite section comprises a beam-like section which may in particular be made of a light-weight metal, and a facing of at least a part of at least one face of the beam-like section made of another metal. The beam-like part is produced by extruding a billet of metal through a die, and at the same time the facing strip is fed through the shape-giving opening in the die. Inside the die there is provided at least one moving face which may e.g. be in the form of a wheel, over which the facing strip passes in being fed to the die opening. Also the strip can be deformed during feeding or extrusion to provide a variety of shapes. The wheels can be shaped to effect the shaping of the strip. They also reduce friction and wear in the die. Measures are taken to allow easy access to such wheels for ease of repair or for changing the wheels.

Abstract: An extrusion press stem exhibits at least one channel which runs approximately parallel to the central axis and connects up with a shape giving die. Such a stem as used in the indirect extrusion of materials, in particular light metal billets, is made up of component parts which fit concentrically together and is held securely together by the joints at the end of each component.

Abstract: A process for the extrusion of tubes or similar hollow sections from a billet is disclosed within the billet is forced against a hollow extrusion die surrounding a mandrel and a mandrel support. A core passing through the extrusion billet moves in the direction of extrusion with the billet and is led through the mandrel into the space inside the resultant hollow section. The process of the present invention relieves the die of the high stresses which can otherwise lead to early failure of the die.

Abstract: A process and device for manufacturing composite sections by means of extrusion are described. The composite sections comprise at least two components, one of which is fed into the stream of metal being extruded and is securely joined to the face of the product without coming into contact with the face of the extrusion die.

Abstract: A process allows the production of composite sections made of at least two component parts such as conductor rails or the like having a beam like section with a facing in the form of a conductive metal strip. The process makes use of an extrusion die whereby at least one of the components of the composite section is fed to the die by means of frictional force on a face which moves continuously towards the die.

Abstract: A process and device for carrying out the process allows for the extrustion of composite sections comprising a beam-like section made of a light metal and at least one insert made of another metal which provides a facing on at least one surface of the beam-like section. The beam-like section, which may be a conductor rail, is produced by extruding through a shape-giving die whereby at least two composite sections are produced simultaneously and the facing strips are positioned pairwise between opposite lying parts of the beam-like sections. The present invention allows the facing strips to be introduced into the extrusion device without the extreme bending previously experienced. Brittle materials which could not withstand the extreme bending experienced heretofore can now be used for facing material.

Abstract: The invention concerns a device for the extrusion of hollow or semi-hollow sections which are made in particular of a light metal. The device has at least one mandrel head on a mandrel support projecting into a die opening, the mandrel head being a special insert-type mandrel which is held in place on the mandrel support by a connecting device.

Abstract: Manufacture of a light metal shock absorber by impact extrusion of the light metal of a steel-light metal composite blank, wherein the metallic bonding of the composite blank is achieved by coextrusion. The steel component on the bottom face of the light metal shock absorber is provided with a steel ring which is welded or otherwise appropriately joined during or after impact extrusion. Also the light metal sleeve of the shock absorber can, after impact extrusion, be welded or otherwise appropriately joined to light metal.