Thyssenkrupp Steel Europe Ag

Thyssen Krupp Ag

Schwartz Gmbh

Axel Schrooten

Janko Banik

Sascha Sikora

Maria Köyer

Marc Blumenau

Bernd Schuhmacher

Manuela Ruthenberg

Manfred Meurer

Martin Norden

Tobias Lewe

Christian Schwerdt

Ralf Bause

Patrick Kuhn

Ken-Dominic Flechtner

Markus Löcker

Dirk Rosenstock

Harald Lehmann

Franz Josef Lenze

Alexander Wilden

Thorsten KÖHLER

A process for manufacturing a flat steel product having a prealloyed corrosion-resistant coating, comprises providing a coated flat steel product comprising a steel substrate having, at least on one side of the steel substrate, and an aluminum-based corrosion-resistant coating. The coated flat steel product is heat-treated, comprising the following substeps: Heating the coated flat steel product in a furnace at a furnace temperature T of between 950° C. and 1150° C. with a furnace dwell time tof between 40 seconds and 150 seconds, the furnace temperature being chosen such that the heating rate of the coated flat steel product in the temperature range from 500° C. to 700° C. is more than 10 K/s. The coated flat steel product is held at a temperature above Ac3 for a hold time of between 20 seconds and 60 seconds.

Process for manufacturing a flat steel product having an aluminum-based corrosion-resistant coating, and flat steel product having an aluminum-based corrosion-resistant coating

A method for producing a component made of a steel product coated with an Al&#x2014;Si protective coating, includes:

Temporary corrosion protection layer

A process for producing a steel component with a metallic, corrosion protection coating and very good mechanical properties may involve directly applying an iron-based alloy to a steel substrate. The iron-based alloy may contain 50-80% by weight of Fe, 0-30% by weight of Mg, 0-5% by weight of Al, 0-5% by weight of Ti, 0-10% by weight of Si, 0-10% by weight of Li, 0-10% by weight of Ca, 0-30% by weight of Mn, and a balance of Zn and unavoidable impurities. The steel substrate that has been coated with the iron-based alloy may then be subjected to hot forming in order to obtain the steel component. A metallic coating that protects against corrosion for steel components to be produced by the process of hot forming can be obtained.

Method for producing a steel component which is provided with a corrosion-resistant metal coating, and steel component

A process for producing a three-dimensionally shaped steel component from a steel sheet with a metallic coating may involve hot forming the steel sheet into the steel component. The metallic coating may involve an Fe&#x2014;Al-based alloy. To protect the steel sheet or the steel component against scale formation, the Fe&#x2014;Al-based alloy may be applied directly to the steel sheet by galvanic coating and/or physical vapor deposition. The coating produced in this way may contain 30-60% by weight Fe, a balance of Al, and, in some cases, 0.1-10% by weight Mg, 0.1-5% by weight Ti, 0.1-10% by weight Si, 0.1-10% by weight Li, and/or 0.1-10% by weight Ca. Before heating the coated steel sheet as part of the hot forming process, the coated steel sheet may have an Fe&#x2014;Al phase is stable to above 900&#xb0; C.

Method for producing a steel component which is shaped by hot-forming a steel sheet which has a metal coating, such a steel sheet, and a steel component produced from said steel sheet by means of a hot-forming process

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Dortmund, Germany

Axel Schrooten