| VOESTALPINE STAHL GMBH Patent applications |
| Patent application number | Title | Published |
|---|
| 20120132327 | HIGH STRENGTH STEEL SHEET HAVING EXCELLENT HYDROGEN EMBRITTLEMENT RESISTANCE - Disclosed is a high strength steel sheet having excellent hydrogen embrittlement resistance. The steel sheet has a tensile strength of 1180 MPa or more, and satisfies the following conditions: with respect to an entire metallographic structure thereof, bainite, bainitic ferrite and tempered martensite account for 85 area % or more in total; retained austenite accounts for 1 area % or more; and fresh martensite accounts for 5 area % or less (including 0 area %). | 05-31-2012 |
| 20110308673 | Manganese steel strip having an increased phosphorous content and process for producing the same - A hot-rolled austenitic manganese steel strip having a chemical composition in percent by weight of 0.4%≦C≦1.2%, 12.0%≦Mn≦25.0%, P≧0.01% and Al≦0.05% has a product of elongation at break in % and tensile strength in MPa of above 65,000 MPa %, in particular above 70,000 MPa %. A cold-rolled austenitic manganese steel strip having the same chemical composition achieves a product of elongation at break in % and tensile strength in MPa of above 75,000 MPa %, in particular above 80,000 MPa %. | 12-22-2011 |
| 20110297292 | METHOD FOR PRODUCING AN IMPROVED ELECTRICAL STEEL STRIP - The invention relates to a method for producing an electric steel strip, in particular an iron oxide-coated steel strip for use as electric sheet steel for the electrical industry; the steel strip is fed in a continuous process to a closed treatment chamber; the electric steel is conveyed into the treatment chamber at a temperature between 450° C. and 550° C. and is acted on there with compressed air and an oxygen concentration of between 0.05% and 0.2% oxygen, measured in the entire furnace chamber atmosphere; and the dew point of water is set to below −10° C. and the furnace chamber atmosphere is a reducing atmosphere; the invention also relates to the electric sheet steel and its use. | 12-08-2011 |
| 20110272285 | Method for the electrolytic deposition of chromium and chromium alloys - The invention relates to a method for depositing chromium and/or chromium alloys on metals, and particularly on sheet steel, wherein an alloy layer is electrolytically deposited on the metal from a solution containing chromium ions and/or chromium ions and further metal ions such as Zn, Cd, In, Pb, Bi, Mo, Cu, Fe, Ni, Co, Mn, Al, Sb, Ag, Sn, Mg, wherein chromium hydroxide precipitated from a chromium (III) solution is used for regenerating the electrolyte solution using chromium (III) ions. | 11-10-2011 |
| 20110139308 | METHOD FOR THE PRODUCTION AND REMOVAL OF A TEMPORARY PROTECTIVE LAYER FOR A CATHODIC COATING - 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 μm, preferably 7 to 14 μm, 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/m | 06-16-2011 |
| 20110132052 | METHOD FOR FLEXIBLY ROLLING COATED STEEL STRIPS - The invention relates to a method for producing a sheet metal component. A hot or cold strip is electrolytically coated or coated in a smelting bath and the thus coated hot or cold strip is subjected to a flexible rolling process. During said process, sheet metal having various thicknesses of the flexibly rolled steel strips are produced due to various rolling pressures. Said invention is characterized in that in accordance with the thickness of the sheet metal after being rolled in a flexible manner or in accordance with the rolling pressure during flexible rolling, either the coating whilst being coated has various thicknesses, and in accordance with the rolling pressure with increasing rolling pressure that is expected, the thickness of the coating is thicker and/or the coating prior to or after the flexible rolling is subjected to a mechanical or chemical surface treatment for adjusting the desired emissivity or heat absorption capacity. | 06-09-2011 |
| 20110076477 | METHOD FOR PRODUCING COATED AND HARDENED COMPONENTS OF STEEL AND COATED AND HARDENED STEEL STRIP THEREFOR - 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. | 03-31-2011 |
| 20110045316 | METHOD FOR PRODUCING A HARDENED PROFILED STRUCTURAL PART - 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. After sufficient heating the sheet is cooled, wherein the rate of cooling is set in such a way that hardening of the sheet alloy is achieved. The invention further relates to a corrosion-protection layer and a profiled structural element. | 02-24-2011 |
| 20100276293 | ANTI-CORROSION SYSTEM FOR METALS AND PIGMENT THEREFOR - The invention relates to an anti-corrosion system for metals consisting of at least one finish or coating that can be applied to a metal, said finish or coating comprising an organic matrix. The organic matrix also contains anti-corrosion pigments, which are finely distributed throughout the organic matrix. The anti-corrosion pigments are formed from a metal alloy of at least two metals and optionally from inevitable impurities. The invention also relates to a corresponding anti-corrosion pigment. | 11-04-2010 |
| 20100068555 | CORROSION PROTECTIVE LAYER WITH IMPROVED CHARACTERISTICS - The invention relates to a corrosion-protective layer for protecting steel substrates from corrosion, comprising a zinc-chromium layer applied on the steel substrate by electrolytic joint deposition of zinc and chromium ions, and a chromate-free organic thin layer applied thereon, substantially comprising synthetic resins, and to a method for improving the paint adhesion of a zinc-chromium corrosion-protective layer. | 03-18-2010 |
