Abstract: A flat steel product and a method of making a flat steel product having a hole expansion of at least 60%, a yield strength of at least 660 MPa, a tensile strength of at least 760 MPa, and an elongation at break of at least 10%. The flat steel product is made from a complex-phase steel, which includes (in wt %) C: 0.01-0.1%, Si: 0.1-0.45%, Mn: 1-2.5%, Al: 0.005-0.05%, Cr: 0.5-1%, Mo: 0.05-0.15%, Nb: 0.01-0.1%, Ti: 0.05-0.2%, N: 0.001-0.009%, P: <0.02%, S: <0.005%, Cu: ?0.1 %, Mg: ?0.0005 %, O: <0.01 %, optionally one or more of Ni, B, V, Ca, Zr, Ta, W, REM, and Co, where Ni: ?1%, B: ?0.005%, V: ?0.3%, Ca: 0.0005-0.005%, Zr, Ta, W: in total ?2%, REM: 0.0005-0.05%, and Co: <1%, and iron and unavoidable impurities as the remainder, where % Ti>(48/14)% N+(48/32)% S and % Nb<(93/12)% C+(45/14)% N+(45/32)% S. The structure of the flat steel product includes (in area %) ?80% bainite, <15% ferrite, <15% martensite, <5% cementite, and <5 vol % retained austenite.

Abstract: An apparatus for structuring a roller surface is proposed, wherein the apparatus has a laser source and an optical system, wherein the laser source is designed for generating laser pulses, wherein the optical system has at least one beam shaper, at least one beam splitter, and a focusing unit, wherein the combination of beam shaper and beam splitter is arranged between the laser source and the focusing unit.

Abstract: A battery housing for a vehicle battery includes side walls which laterally delimit an interior of the battery housing, with a mounting frame running externally around the side walls for mounting the battery housing on a chassis of an electric vehicle, and with a floor structural element delimiting the interior of the battery housing at the bottom, wherein a first reinforcing profile for reinforcing the floor structural element is arranged on said floor structural element, and/or a second reinforcing profile for reinforcing the mounting frame is arranged on said mounting frame.

Abstract: A method for forming a semi-finished product is disclosed, wherein the semi-finished product is provided in a provision step and, in a solid-stock forming step, a forming region of the semi-finished product is formed such that a thickness of the deformed forming region increases continuously toward one margin of the semi-finished product.

Abstract: The invention relates to a method for thermally connecting at least two workpiece sections, wherein at least a first and second workpiece section are provided, wherein at least the first workpiece section comprises an edge (1.1, 1.1?, 1.1?, 1.1??) and the edge (1.1, 1.1?, 1.1?, 1.1??) defines a termination of an edge section (1.2, 1.2?, 1.2?, 1.2??), the first and second workpiece sections are positioned relative to one another in such a way that they are connected to one another at least in certain sections in their longitudinal extent, wherein the edge section (1.2, 1.2?, 1.2?, 1.2??) has a defined geometry. According to the invention, the defined geometry of the edge section (1.2, 1.2?, 1.2?, 1.2??) is dimensioned in such a way that a local region in the cross section of the edge section (1.2?) is provided with a maximum thickness (tmax1?) at a distance (1.3?) from the edge (1.1?).

Abstract: The invention relates to a method for producing a component, said method comprising: preforming a workpiece to a preformed component having a base region, a side-plate region, and optionally a flange region, such that the preformed component has a material surplus for the side-plate region and/or the base region and/or optionally the flange region; and calibrating the preformed component to an at least in regions finally formed component having a base region, a side-plate region, and optionally a flange region; wherein the base region of the preformed component has substantially the geometry and/or the local cross sections of the base region of the at least in regions finally formed component. The invention moreover relates to a device for producing a component, in particular for carrying out the method.

Abstract: The invention relates to a method for producing a component having a bottom region, optionally a bottom-body transition region, optionally a body region, optionally a body-flange transition region and optionally a flange region, wherein a semifinished product made of a plastically deformable material is provided, wherein the semifinished product has a longitudinal extent and a transverse extent having a circumferential edge contour having a separating surface, wherein the semifinished product is processed in one or more stages in one or more tools to produce the component. Moreover, the invention relates to a tool for producing a component.

Abstract: A method for producing a formed component is disclosed. The method includes: preforming a workpiece to a preformed component having a base region, a wall region, and optionally a flange region, wherein a material quantity adaptation is set in the preformed component; and calibrating the preformed component to a finally formed component, at least in regions, having a base region, a wall region, and optionally a flange region, wherein compressing of the preformed component is performed at least in regions during the calibrating. The method provides a formed component wherein the dimensional accuracy is improved and, in particular, any spreading of the walls of U-shaped components or part-portions can be influenced in a targeted manner, so as to further improve the dimensional accuracy of the formed component.

Abstract: A process for producing a steel product having a protective coating based on zinc and a tribologically active layer applied to the protective coating where the process includes providing a flat steel product provided with the protective coating, and applying an aqueous solution comprising ammonium sulfate and demineralized water to the protective coating of the steel product. The concentration of the ammonium sulfate based on the SO42? ions is 0.01-5.7 mol/L, the pH of the aqueous solution is 4-6, and the near-surface reaction time between the aqueous solution and the protective coating is more than 0 seconds and not more than 5 seconds. After a drying operation conducted without preceding rinsing, a tribologically active layer consisting of ammonium zinc sulfate is formed atop the protective zinc coating. Also, a steel product having a protective coating based on zinc and a tribologically active layer of ammonium zinc sulfate.

Abstract: The present invention relates to a steel material composite having at least two layers (1, 2, 3, 4), comprising at least one first layer (1, 3) of a material-removable and/or shearable steel and at least one second layer (2, 4) of a formable steel, cohesively bonded to the first layer (1, 3).

Abstract: A commercial vehicle wheel including a rim configured to hold a tire and a wheel disc attached to the rim with an attachment region for removable attachment to a wheel carrier. The wheel disc is formed from at least two parts, which are joined together. At least one of the parts consists of a multiphase steel alloy or a heat-treatable steel alloy.

Abstract: A housing for a vehicle battery has a cover plate and a bottom plate, and a frame arranged between the cover plate and the bottom plate. The frame is connected to the cover plate and the bottom plate, and at least one crossmember element is arranged in the space which is enclosed by the frame.

Abstract: The invention relates to a ballistic steel or wear-resistant steel (1) made up of a multilayer steel materials composite comprising a first layer (1.1) composed of a steel which in the hardened or tempered state has a hardness of >350 HBW and at least one second layer (1.2) which is composed of a steel which is softer compared to the first layer (1.1) and is joined by substance-to-substance bonding to the first layer (1.1), wherein the second layer (1.2) has a hardness which is at least 20% lower than that of the first layer (1.1) in the hardened or tempered state. The invention further relates to a corresponding use of the ballistic steel or wear-resistant steel (1).

Abstract: A battery housing for receiving battery elements, in particular for a vehicle, includes a case formed by a frame including one or more profiles and at least one first floor. The case provides an interior region for the battery elements. A second floor is positioned at a distance below the first floor and defines a space with the first floor. A cover covers the case.

Abstract: A method for producing a molded body of particularly steel, and including a hub and a bell-shaped lower part axially connected thereto, in which an inner contour is made in the lower part by non-cutting forming in a convex region. The inner contour includes of ball tracks and cage paths that are concave in the axial direction and arranged in a peripherally alternating manner, for receiving rolling bodies, the cage paths being shallower than the ball tracks. The hub is formed from a rotating round blank and reducing the thickness thereof using at least one pressure roller. The flat region of the round blank that radially connects to the hub is pressed onto contour segments of a rotating first inner contour tool, partially forming the inner contour using at least one axially and radially moving pressure roller to form a preform of the lower part. The fixed preform is pressed against contour segments of a second inner contour tool by a die of partial dies, fully forming the cage paths and ball tracks.

Abstract: The invention relates to a method for producing a steel component by forming of a flat steel product coated with an anticorrosion coating, and to a steel component produced from a steel substrate coated with anticorrosion coating. The steel component is produced by providing a flat steel product coated with an aluminum-based anticorrosion coating, heat-treating a blank formed from the coated flat steel product, in a furnace, where 0.0034° C./min?Q?0.021° C./min, with Q=(T*d)/(t*L), T=furnace temperature in ° C., d=blank thickness in mm, t=dwell time of the blank in the furnace in min, L=furnace length in m, and shaping the blank in a shaping tool.

Abstract: The present invention concerns a method for production of a supporting member with an at least partially closed cross-section, having at least a first metal shell and a second metal shell which are connected together at least in portions in the longitudinal direction. The method includes a provision of at least a first and a second metal blank. At least a first and a second metal shell are produced from the respective first and second metal blanks. The first and second metal shells each have at least one floor with two protruding uprights spaced apart from each other and integrally connected to the floor. The first and second metal shells are positioned such that the uprights of the metal shells come into overlapping contact.

Abstract: The present invention relates to a method and to a device (10) for producing a wheel rim (1) for a vehicle wheel (3), and to a method for producing a vehicle wheel (3).

Abstract: A method for producing rotationally symmetric structural components of metal, in particular steel, is provided. A blank is arranged in a torsion-proof manner on a first receptacle, the receptacle is rotated about a rotation axis so that the blank is caused to rotate about this rotation axis, at least one linear shaping element with a contour having at least partially an unrolled external contour of the rotationally symmetric structural component or a preform of the structural component is moved tangentially to the surface of the synchronously rotating blank, and the linear shaping element is at the same time pressed against the blank so that during the tangential movement the contour of the linear shaping element is formed at least partially into the blank. A kingpin or link pin of a connection link with a connection shaft and a link outer part is produced.

Abstract: The present invention relates to a battery housing for an electrically powered vehicle, in particular a motor vehicle, comprising a battery accommodation space made of a first flat steel product and a housing frame made of a second flat steel product, where the two flat steel products differ in terms of at least one of the properties yield strength (Rp0.2), tensile strength (RM) or elongation (A50).