Abstract: The method relates to a press-hardened component with a tensile strength Rm>1600 MPa, in particular >1800 MPa, and especially >2000 MPa, wherein the component is manufactured from a steel material, wherein the steel material is a boron-manganese steel, which has a carbon content >0.30 mass %, wherein the steel material is hot rolled or hot rolled and cold rolled to a strip with a thickness of 0.5 to 3 mm, wherein the strip has a thin coating of zinc or a zinc-based alloy and a coating weight of <50 g/m2 on each strip side of the steel strip.

Abstract: The invention relates to a method for press hardening sheet steel components in which a blank is detached from a sheet steel band composed of a hardenable steel alloy and the blank is then austenitized, in that it is heated to a temperature greater than Ac3 and is then inserted into a forming tool and formed in the forming tool, and during the forming, is cooled at a speed greater than the critical hardening speed, characterized in that in order to inhibit microcracks of the second type from being produced during the forming and hardening process in the sheet metal blanks that are to be formed, oxygen is supplied adjacent to the positive radii and/or drawing edges; the invention also relates to a device for performing this method.

Abstract: The invention relates to a method for producing a hardened, steel component with regions of different hardness and/or ductility; a blank is stamped out and either heated in some regions to a temperature ?Ac3, and then transferred to a forming die, is formed, and is cooled at a speed that is greater than the critical hardening speed and thus hardened or is cold formed into the finished shape and the formed blank is heated in some regions to a temperature >Ac3 and then transferred to a hardening die and is hardened at a speed greater than the critical hardening speed; the steel material is adjusted in a transformation-delaying fashion so that a quench hardening through transformation of austenite into martensite takes place at a forming temperature that lies in the range from 450° C. to 700° C.; after the heating and before the forming, an active cooling takes place at >15 K/s.

Abstract: A method for heating a blank or a preformed steel sheet component for hot forming and/or quench hardening purposes. In at least some regions, the heating is carried out to a temperature above AC3; the heating of the blank is embodied as a rapid heating and to this end, the blank is heated in a first zone at an average heating rate of >25 K/s up to about 600° C. and above this temperature, is heated at an average heating rate of >10 K/s up to a maximum of the AC3 temperature and then is transferred to a second zone in which the blank that has been preheated in the first zone is heated in at least some regions to temperatures greater than AC3, in particular >850° C., with the heating rate in the second zone being >10 K/s. The invention also relates to a device for carrying out the method.

Abstract: A method for producing a hardened sheet steel, in particular a sheet steel that is coated with a metallic anti-corrosion layer; the sheet steel is first heated to an austenitization temperature and the austenite transformation is completed and then the sheet steel is pre-cooled to a temperature that lies above the transformation temperature of the austenite to other phases and is then transferred to a press-hardening die and in the press-hardening die, is shaped and, for hardening purposes, is quenched; for pre-cooling purposes, the blank is blasted in at least some areas or zones with dry ice, dry snow, or a gas flow containing dry ice particles.

Abstract: The invention relates to a method for press hardening sheet steel components in which a blank is detached from a sheet steel band composed of a hardenable steel alloy and the blank is then austenitized, in that it is heated to a temperature greater than Ac3 and is then inserted into a forming tool and formed in the forming tool, and during the forming, is cooled at a speed greater than the critical hardening speed, characterized in that in order to inhibit microcracks of the second type from being produced during the forming and hardening process in the sheet metal blanks that are to be formed, oxygen is supplied adjacent to the positive radii and/or drawing edges; the invention also relates to a device for performing this method.

Abstract: The invention relates to a method for press hardening sheet steel components in which a blank is detached from a sheet steel band composed of a hardenable steel alloy and the blank is then austenitized, in that it is heated to a temperature greater than Ac3 and is then inserted into a forming tool and formed in the forming tool, and during the forming, is cooled at a speed greater than the critical hardening speed, characterized in that in order to inhibit microcracks of the second type from being produced during the forming and hardening process in the sheet metal blanks that are to be formed, oxygen is supplied adjacent to the positive radii and/or drawing edges; the invention also relates to a device for performing this method.

Abstract: A method for producing a hardened sheet steel, in particular a sheet steel that is coated with a metallic anti-corrosion layer; the sheet steel is first heated to an austenitization temperature and the austenite transformation is completed and then the sheet steel is pre-cooled to a temperature that lies above the transformation temperature of the austenite to other phases and is then transferred to a press-hardening die and in the press-hardening die, is shaped and, for hardening purposes, is quenched; for pre-cooling purposes, the blank is blasted in at least some areas or zones with dry ice, dry snow, or a gas flow containing dry ice particles.

Abstract: The invention relates to a method for the production and removal of a temporary protective layer for a cathodic coating, particularly for the production of a hardened steel component with an easily paintable surface, wherein a steel sheet made of a hardenable steel alloy is subjected to a preoxidation, wherein said preoxidation forms a FeO layer with a thickness of 100 nm to 1,000 nm and subsequently a melt dip coating is conducted, wherein, during the melt dip coating, a zinc layer is applied having a thickness of 5 to 20 ?m, preferably 7 to 14 ?m, on each side, wherein the melt dip process and the aluminum content of the zinc bath is adjusted such that, during the melt dip coating, an aluminum content for the barrier layer results of 0.15 g/m2 to 0.

Abstract: The invention relates to a method for producing an anti-corrosion coating for hardenable sheet steels, wherein at least two metal layers are deposited one after another onto the steel substrate; the one metal layer is a zinc layer or zinc-based layer and the other layer is a layer composed of a metal that forms baser intermetallic phases with Zn or Fe and has a higher oxidation potential than Zn, namely Ni, Cu, Co, Mn, or Mo, or a layer based on these metals; and an anti-corrosion coating for hardenable sheet steels.

Abstract: A method for heating a blank or a preformed steel sheet component for hot forming and/or quench hardening purposes. In at least some regions, the heating is carried out to a temperature above AC3; the heating of the Hank is embodied as a rapid heating and to this end, the blank is heated in a first zone at an average heating rate of >25 K/s up to about 600° C. and above this temperature, is heated at an average heating rate of >10 K/s up to a maximum of the AC3 temperature and then is transferred to a second zone in which the blank that has been preheated in the first zone is heated in at least some regions to temperatures greater than AC3, in particular >850° C., with the heating rate in the second zone being >10 K/s. The invention also relates to a device for carrying out the method.

Abstract: The invention relates to a method for the production of a hardened component made of a hardenable steel, wherein the steel strip is exposed to a temperature increase in an oven, and is thus exposed to an oxidizing treatment such that a surface oxide layer is created, and subsequently a coating using a metal or a metal alloy is carried out. The strip is heated and at least partially austenitized for producing an at least partially hardened component, and subsequently cooled and thereby hardened. The invention also relates to a steel strip produced according to said method.

Abstract: A method for producing a component with a sandwich structure, in which at least one essentially flat top layer is produced from a ferrous material, a structure is introduced into an essentially flat intermediate layer composed of a ferrous material, contact regions of the intermediate layer are at least partially galvanized, the at least one top layer and the intermediate layer are superposed to form a composite so that the contact regions rest against the top layer, and the composite is then press hardened. The invention produces an easily recyclable component with a sandwich structure, which has good rigidity and strength properties.

Abstract: The invention relates to a method for producing a hardened, steel component with regions of different hardness and/or ductility; a blank is stamped out and either heated in some regions to a temperature ?Ac3, and then transferred to a forming die, is formed, and is cooled at a speed that is greater than the critical hardening speed and thus hardened or is cold formed into the finished shape and the formed blank is heated in some regions to a temperature >Ac3 and then transferred to a hardening die and is hardened at a speed greater than the critical hardening speed; the steel material is adjusted in a transformation-delaying fashion so that a quench hardening through transformation of austenite into martensite takes place at a forming temperature that lies in the range from 450° C. to 700° C.; after the heating and before the forming, an active cooling takes place at >15 K/s.

Abstract: The invention relates to a method for producing a hardened steel component with a coating composed of zinc or a zinc alloy; a blank is stamped out of a sheet coated with the zinc or zinc alloy, the stamped-out blank is heated to a temperature ?Ac3 and if need be, kept at this temperature for a predetermined time in order to induce the formation of austenite, and then the heated blank is transferred to a forming die, is formed in the forming die, and is cooled at a speed that is greater than the critical hardening speed and thus hardened; the steel material is adjusted in a transformation-delaying fashion so that a quench hardening through transformation of austenite into martensite takes place at a forming temperature that lies in the range from 450° C. to 700° C.; after the heating and before the forming, an active cooling takes place at >15K/s.

Abstract: The invention relates to a method for producing hardened structural parts from sheet steel. The method includes shaping at least one shaped part made of sheet steel provided with a cathodic corrosion protection coating, performing any required final trim of the shaped part and possibly any required punching, or the creation of a perforation pattern, subsequently heating the shaped part, at least over partial areas, under the admission of atmospheric oxygen to a temperature which permits austenizing of the steel material, and thereafter transferring the structural part to a mold-hardening tool and performing mold-hardening in the mold-hardening tool, wherein the structural part is cooled by the contact with and pressing by the mold-hardening tool and is hardened thereby.

Abstract: The invention relates to a method for producing a hardened steel part having a cathodic corrosion protection, whereby a) a coating is applied to a sheet made of a hardenable steel alloy in a continuous coating process; b) the coating is essentially comprised of zinc; c) the coating additionally contains one or more oxygen-affine elements in a total amount of 0.1% by weight to 15% by weight with regard to the entire coating; d) the coated steel sheet is then, at least in partial areas and with the admission of atmospheric oxygen, brought to a temperature necessary for hardening and is heated until it undergoes a microstructural change necessary for hardening, whereby; e) a superficial skin is formed on the coating from an oxide of the oxygen-affine element(s), and; f) the sheet is shaped before or after heating, and; g) the sheet is cooled after sufficient heating, whereby the cooling rate is calculated in order to achieve a hardening of the sheet alloy.

Abstract: The invention relates to a method for the production and removal of a temporary protective layer for a cathodic coating, particularly for the production of a hardened steel component with an easily paintable surface, wherein a steel sheet made of a hardenable steel alloy is subjected to a preoxidation, wherein said preoxidation forms a FeO layer with a thickness of 100 nm to 1,000 nm and subsequently a melt dip coating is conducted, wherein, during the melt dip coating, a zinc layer is applied having a thickness of 5 to 20 ?m, preferably 7 to 14 ?m, on each side, wherein the melt dip process and the aluminum content of the zinc bath is adjusted such that, during the melt dip coating, an aluminum content for the barrier layer results of 0.15 g/m2 to 0.

Abstract: The invention relates to a method for producing a hardened profiled structural part from a hardenable steel alloy with cathodic corrosion protection. The method includes applying a coating to a sheet made of a hardenable steel alloy, wherein the coating comprises zinc, and the coating further comprises one or several elements with affinity to oxygen in a total amount of 0.1 weight-% to 15 weight-% in relation to the total coating. After applying the coating, the coated sheet steel is roller-profiled in a profiling device, so that the sheet tape is formed into a roller-formed profiled strand. Thereafter, the coated sheet steel is brought, at least in parts and with the admission of atmospheric oxygen, to a temperature required for hardening and is heated to a structural change required for hardening. A skin made of an oxide of the element(s) with affinity to oxygen is formed on the surface of the coating.

Abstract: The invention relates to a method for the production of a hardened component made of a hardenable steel, wherein the steel strip is exposed to a temperature increase in an oven, and is thus exposed to an oxidizing treatment such that a surface oxide layer is created, and subsequently a coating using a metal or a metal alloy is carried out. The strip is heated and at least partially austenitized for producing an at least partially hardened component, and subsequently cooled and thereby hardened. The invention also relates to a steel strip produced according to said method.