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:
Feb. 27, 2018
Filed:
Sep. 21, 2011
Christof Holzapfel, Gelsenkirchen, DE;
Stefan Pahike, Gelsenkirchen, DE;
Carsten Schepers, Raesfeld, DE;
Heiner Schrapers, Duisburg, DE;
Christof Holzapfel, Gelsenkirchen, DE;
Stefan Pahike, Gelsenkirchen, DE;
Carsten Schepers, Raesfeld, DE;
Heiner Schrapers, Duisburg, DE;
ThyssenKrupp Electrical Steel GmbH, Gelsenkirchen, DE;
Abstract
The invention relates to a method for producing a grain-orientated electric steel which is coated with a phosphate layer and in which there is applied to the electric steel a phosphate solution which contains a colloid component and at least one colloid stabilizer (A) and/or at least one pickling inhibitor (B), the phosphate solution containing at least one compound which has chromium in the oxidation stage III (chromium (III) compound). Grain-orientated electric steel produced with the method according to the invention is distinguished by excellent optical properties and a high tensile stress.