Thyssenkrupp Steel Europe Ag

Thyssen Krupp Ag

Outokumpu Nirosta Gmbh

Jennifer Schulz

Sascha Sikora

Janko Banik

Erik Hilfrich

Maria Köyer

Manuela Ruthenberg

Marc Blumenau

Manfred Meurer

Fred Jindra

Friedhelm Macherey

Wilhelm Warnecke

Fabian Junge

Martin Norden

Robert Yanik

Hans-Joachim Heiler

Folkert Schulze-Kraasch

Burak William Cetinkaya

Dirk Czupryna

Klaus Josef Peters

Matthias Dahlem

Horst Berndsen

Frank Vennemann

Bastian Schöntaube

Georg Parma

Hans-Joachim Drrernat Krautschick

Rudolf Schönenberg

Christopher Dr-Ing Gusek

Marc Dr-Ing Blumenau

Peter Schmidt

The present disclosure relates to a process for producing a surface-treated and surface-finished sheet steel. A sheet steel having a zinc-based coating is provided, wherein zinc grains are distributed within the coating. The surface-treated sheet steel are skin-pass rolled to form embossed regions and unembossed regions on the surface of the sheet steel provided with a zinc-based coating. Skin-pass rolling is performed with a degree of skin-pass greater than 1% in such a way that due to the force exerted by the skin-pass rolling the zinc grains in the embossed region are altered in dimension relative to the zinc grains in the unembossed region.

Method for producing a surface-treated and surface-conditioned steel sheet

A sheet metal component made of a hot-formed flat steel product including a steel substrate consisting of, in mass. %, C: 0.1-0.4%, Mn: 0.5-3.0%, Si: 0.05-0.5%, Cr: 0.005-1.0%, B: 0.00050.01% and optionally one or more of V, Ti, Nb, Al, Ni, Cu, Mo, and W, where the contents of the respective optionally present alloy element are V: 0.001-0.2%, Ti: 0.01-0.1%, Nb: 0.001-0.1%, Al: 0.01-0.2%, Ni: 0.01-0.4%, Cu: 0.01-0.8%, Mn: 0.002-1.0%, W: 0.001-1.0%, and the remainder iron and unavoidable impurities, wherein the unavoidable impurities include contents of less than 0.1% P, less than 0.05% S, and less than 0.01% N, and an Al corrosion protection layer applied to the steel substrate, wherein the component is optionally hardened. An adhesive section having an SDR value of 3-30%, determined according to ISO 25178, is provided on the free outer face of the corrosion protection coating for adhering the sheet metal component to another component.

Sheet metal component and method for producing same

The present invention relates to a method of hot dip coating of flat steel products, comprising a step of stripping the coated steel strip by means of at least one nozzle that emits a stripping gas having a temperature Tat an angle &#x3b1; in the direction of the coated steel strip, wherein the angle &#x3b1;, the distance h between the surface of the melt bath and the lower edge of the nozzle in mm, the temperature of the stripping gas in &#xb0; C. and the differential between the temperature Tof the melt bath and the temperature Tof the steel strip are in a particular relationship to one another, and to a correspondingly produced hot dip-coated flat steel product.

Hot dip coated steel strip having an improved surface appearance and method for production thereof

A steel component formed from a flat steel having a yield point of 150-1100 MPa and a tensile strength of 300-1200 MPa and coated with an anticorrosion coating of an alloy that includes 35-70% by weight aluminum, 35-60% by weight zinc, 0.1-10% by weight magnesium, up to 10% by weight Si, and up to 5% by weight Fe. A blank obtained from the flat steel product is heated to at least 800&#xb0; C. and formed into the steel component. Alternatively, the steel component may be formed into the steel component first and then heated to at least 800&#xb0; C. Regardless, the steel component may then be hardened by sufficiently rapid cooling the steel component from a sufficiently high temperature.

Method for producing a steel component having a metal coating protecting it against corrosion, and steel component

A method by which a flat steel product containing 2-35 wt. % of Mn can be provided with a coating of Zn which adheres well by annealing at an annealing temperature Tof 600-1100&#xb0; C. for an annealing time of 10-240 s under an annealing atmosphere which has a reducing effect on the FeO present on the flat steel product and an oxidizing effect on the Mn contained in the steel substrate thereby forming a layer of Mn mixed oxide which covers the flat steel product at least in sections and then cooling the flat steel product to a temperature for bath entry and conveying it through a bath of molten Zn saturated within iron at a temperature of 420-520&#xb0; C., within a dip time of 0.1-10 s.

Method for the hot-dip coating of a flat steel product containing 2-35 wt.% of Mn, and a flat steel product

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Unna, Germany

Jennifer Schulz