Abstract: In a method of forming a hollow workpiece having open ends by inner pressure in a multi-part forming tool, the forming tool having a forming mold is heated and the workpiece is placed into the forming mold of the forming tool. Closing plugs are inserted into the open ends of the workpiece, wherein the closing plugs are components of closing cylinders, in order to seal off the open ends. The forming tool is closed. A heated pressure fluid is introduced into the hollow workpiece through at least one of the closing plugs, with the hollow workpiece having been heated and plasticized in the forming tool. The material of the hollow workpiece is pressed with the heated pressure fluid into the forming mold of the forming tool. The device for performing the method has a multi-part forming tool with a forming mold for the workpiece. Hydraulic closing cylinders with closing plugs are provided for sealing the open ends of the workpiece. The forming tool has a heating device for heating at least the forming mold.

Abstract: A door frame for motor vehicles includes a window channel laterally defined by an outer door panel and an inner door panel, wherein the outer door panel and the inner door panel are provided adjacent of the window opening with longitudinally extending stiffening or reinforcement members located in the window channel. The reinforcement members are circumferentially closed tubular sections having an essentially oval cross-section, wherein the reinforcement members are adapted in their shape to the inner surfaces of the outer door panel and the inner door panel.

Abstract: A bumper for a motor vehicle has a transverse support and impact damping members connected to the transverse support, wherein the transverse support is fastened transverse to longitudinal supports of a motor vehicle frame via the impact damping members to the longitudinal supports. The transverse support is an open profiled member opening in a direction toward the impact damping members and has an upper shell and a lower shell. The transverse support has a front stay with an upper longitudinal edge and a lower longitudinal edge, wherein each one of the upper and the lower longitudinal edges has a leg extending toward the impact damping members. Each leg has a vertical portion and an angled reinforcement flange pointing toward the vehicle frame. Each leg is slanted inwardly between 5 degrees and 45 degrees from the longitudinal edges to the vertical portions.

Abstract: An impact damping member for motor vehicles, mounted as a safety member between a bumper element and a frame of the motor vehicle, has an outer tube having a longitudinal axis positioned perpendicularly to the bumper element and the frame. An inner profiled member is arranged inside the outer tube. The inner profiled member has several hollow bodies connected to one another, and each has a longitudinal axis extending transversely to the longitudinal axis of the outer tube. A first one of the hollow bodies next to the bumper element is penetrated by a coupling member that connects the impact damping member to the bumper element by penetrating the first hollow body and by being attached to the bumper element.

Abstract: A securing disk for interposition between two component parts to be connected has a disk member having a first face and a second face. The disk member has positive-locking bodies projecting from the first and second faces. Securing arms are connected to a circumferential edge of the disk member and project perpendicularly relative to the first face. The securing arms have integrated abutments.

Abstract: A fuel supply system for automobiles with a fuel tank to which are connected a filler pipe and at least one vent for venting the tank during operation of the automobile and one vent for venting the tank during refueling of the tank. The operation vent line and/or the refueling vent line are components of a multiple-duct line. The filler pipe may also be incorporated in the multiple-duct line.

Abstract: A steel alloy for pipes, sheet metal or sections for manufacturing bumpers for motor vehicles, wherein the steel alloy contains, in percent by weight, 0.17 to 0.20% carbon, 1.70 to 2.20% manganese, 0.45 to 0.75% chromium, 0.10 to 0.35% molybdenum, 0.03 to 0.05% aluminum, 0.01 to 0.05% titanium, 0.01 to 0.12% vanadium, 0.025 to 0.06% niobium, 0.0001 to 0.10% zirconium, 0.002 to 0.003% Boron, 0.01 to 0.04% nitrogen, up to 0.15% silicon and up to 0.025% phosphorus and up to 0.010% sulfur, wherein the remainder is iron including impurities caused from smelting, and wherein the sum of the alloy components titanium, vanadium and niobium is between 0.16 and 0.25%.

Abstract: A composite suspension control arm shaft for motor vehicles includes two tubular longitudinal control arms connected through a torsion section having a V-shaped or U-shaped cross-section, wherein reinforcing sheet metal pieces are mounted in the transition areas between the torsion section and the longitudinal control arms for increasing the bending stiffness.

Abstract: A transverse beam forming an at least indirect component of a composite suspension control arm shaft has over a substantial part of its length a trough-shaped torsion portion with a U-shaped or V-shaped cross-section formed by chipless deformation of a tubular hollow section, end portions having a circular cross-section and intermediate portions with a continuously changing cross-section from the end portions to the torsion portion, wherein the double walls of the torsion portion have in the transition areas from the torsion portion to the intermediate portions transversely directed embossments or impressions at the deepest point of the torsion portion, wherein the embossments or impressions engage in each other.

Abstract: 05267372An exhaust manifold includes a curved end portion and at least two T-shaped portions connected to the curved portion through sliding fits, wherein the end portion and the T-shaped portions each are provided with a flange connection and a pipe connection, and wherein each T-shaped portion has a sliding fit connection piece. Each sliding fit connection piece is shaped by internal high pressure shaping at the outer radius of a curved section of the T-shaped portion.

Abstract: A steel alloy for pipes, sheet metal or sections for manufacturing body reinforcements for motor vehicles, particularly side impact beams or A- and B-column reinforcements, wherein the steel alloy contains in percent by weight 0.1 to 0.17% carbon, 2.0 to 2.8% manganese, 0.4 to 0.8% chromium, 0.1 to 0.35% molybdenum, 0.03 to 0.07% aluminum, 0.002 to 0.003% boron, 0.0001 to 0.005% titanium, 0.08 to 0.012% vanadium, 0.025 to 0.06% niobium, 0.0001 to 0.10 zirconium, 0.01 to 0.05% nitrogen, up to 0.3% silicon, up to 0.025% phosphorus and % 0.010 sulfur, wherein the remainder is iron including impurities caused by smelting, and wherein the sum of the alloy components titanium, vanadium and niobium is between 0.16 and 0.25%.

Abstract: A method of deforming an initial pipe having a circular cross-section into an U-shaped section and a device for carrying out the method wherein the inner surface of one half of the initial pipe rests in a positively engaging manner against the inner surface of the opposite half of the pipe, with the exception of lateral loop-shaped ear portions. The initial pipe is secured in its position by mandrels inserted in the ends of the pipe. Initially, the initial pipe is with its lower half at least over areas thereof supported by an abutment and the top half of the initial pipe is pressed in by a ledge-like top die with a convexly curved front portion located opposite the abutment until the top half of the initial pipe is pressed in until it makes contact with the diametrically oppositely located bottom half of the pipes so as to produce a U-shaped top half.

Abstract: A method of manufacturing a composite front suspension control arm shaft for motor vehicles includes connecting two tubular longitudinal control arms to a transverse sectional member, wherein a connection portion adapted to the cross-sectional configuration of the ends of the transverse sectional member is produced at each longitudinal control arm, and wherein the ends of the transverse sectional member are positioned in an assembly position relative to the connection portions and are secured by welding thereto.

Abstract: A method and a device for manufacturing a tubular hollow body with increased diameter portions which are arranged at a distance from each other using the internal high pressure deformation process. Initially an internal portion of the hollow body is sealed off at one end thereof and is supported on the inside at the other end thereof and in this internal portion is formed an increased diameter portion by a hydraulic internal high pressure while axially advancing the hollow body, and subsequently, after axially reversing the hollow body within the shaping tool, another increased diameter portion is manufactured in the same manner.

Abstract: The invention is directed to a process for the manufacture of a metallic molded structural part (1) for motor vehicle components such as door impact girders or bumpers with areas (2) with a higher ductility in relation to the rest of the structural component part. For this purpose, partial areas (2) of a plate (5) are initially heated to a temperature of 900.degree. C. within a period of less than 30 seconds. Subsequently, the thermal-treated plate (5') is shaped in a pressing tool (7) to form the molded structural part (1) and is heat-treated in the pressing tool (7).

Abstract: A method of manufacturing pipes having sections with different wall thicknesses from an initially plane sheet metal in which a starting sheet metal is subjected to a rolling deformation so as to intentionally produce areas of different wall thicknesses in rolling direction. Subsequently, the rolled sheet metal is cut to size as required. The intermediate product obtained in this manner is then shaped into a pipe and the abutting edges are then joined together.

Abstract: A side impact beam for a passenger vehicle, particularly for a vehicle door, includes a hat-shaped profiled section which is open toward the external panelling of the passenger vehicle and has at least one web facing away from the external panelling, two legs connected to the web and directed toward the external panelling and two flanges connected to the ends of the legs and facing away from each other, wherein, starting from the transverse plane in the middle of the beam, the height of the profiled section decreases continuously toward the ends of the beam provided with increased width flanges serving for securing the beam to the vehicle chassis. The height of the profiled section may decrease in accordance with a uniform or non-uniform curve pattern.

Abstract: An arrangement for tightly connecting a metal pipe to a receiving sleeve includes a plug-in sleeve of metal fastened on the metal pipe, wherein the plug-in sleeve has radial projections engaging in two diametrically oppositely located grooves of the receiving sleeve, wherein the grooves terminate at the end face of the receiving sleeve. A U-shaped clamp is inserted in tangential slots of the receiving sleeve and the plug-in sleeve for coupling the sleeves to each other detachably but rigidly against pulling and pushing forces. The plug-in sleeve has a cylindrical fixing portion, a cylindrical coupling portion with greater inner and outer diameter than the fixing portion, and a conically-shaped transition portion integrally connecting the transition portion and the coupling portion. The radial projections are substantially axially oriented tongues cut out of the coupling portion and extending at an angle relative to the coupling portion.

Abstract: A method of manufacturing a pipe having sections with different cross-sectional configurations includes initially providing a sheet bar which has a rectangular base portion and at least one formation section integrally connected to the base portion. In the next step, the sheet bar is shaped into a hollow-cylindrical body. In this step, the base portion is deformed into a tubular shape and the formation section is deformed into a spiral shape. Subsequently, the final shaping of the pipe is carried out which may constitute widening of the formation section by a block which acts from the inside. In a subsequent joining procedure, abutting edges are connected.

Abstract: The tubular reinforcement member (2) has a circular cross section. Compared to the end portions serving for fastening the reinforcement member to the inner side of the door, the middle portion (1) in longitudinal direction of the reinforcement member has a greater resistance against bending loads. For this purpose, at least one sheet steel strip (4) extending parallel to the longitudinal axis (3) of the reinforcement member is tangentially fastened to the periphery of the middle portion (1) in a plane extending parallel to the impact direction (5). The width (B) of the sheet steel strip (4) is overall smaller than the thickness (D) of the reinforcement member. The width (B) decreases in accordance with the bending moment pattern toward the ends of the sheet steel strip (4). The decrease in width may be linear or parabolical.