The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2016
Filed:
Aug. 18, 2011
Marc Blumenau, Hagen, DE;
Hans-joachim Heiler, Moers, DE;
Fred Jindra, Lennestadt, DE;
Rudolf Schoenenberg, Daphne, AL (US);
Hans-joachim Krautschick, Solingen, DE;
Marc Blumenau, Hagen, DE;
Hans-Joachim Heiler, Moers, DE;
Fred Jindra, Lennestadt, DE;
Rudolf Schoenenberg, Daphne, AL (US);
Hans-Joachim Krautschick, Solingen, DE;
ThyssenKrupp Steel Europe AG, Duisburg, DE;
Abstract
A method for hot dip coating a flat stainless steel product with more than 5 wt. % Cr with a protective metallic coating by: heating the flat steel product under an oxygen-free heating atmosphere to 100° C.-600° C. within 1-30 seconds; continuing heating to a holding temperature of 750° C.-950° C., by heating to 550° C.-800° C. under an inert or reducing atmosphere, holding within this temperature window for 1 to 15 seconds under an oxidizing atmosphere, and continuing heating under an inert or reducing atmosphere, until the holding temperature is reached; holding at the holding temperature for 10-120 seconds under a reducing atmosphere; and passing the flat steel product through a nozzle area under an inert or reducing atmosphere at 430°-780° C. and into a molten bath in which the flat steel product is coated with the metallic coating.