Patent · US Expired

Process for the coating of electrical steel strips with an annealing separator

US6423156B1 · kind B1 · utility

3Cited by

4References

5Claims

0Family size

Assignee

EBG Gesellschaft fÃƒÂ¼r Elektromagnetische Werkstoffe mbH · DE

Inventors

Klaus Gunther · Voerde, DE
Heiner Schrapers · Duisburg, DE

Key dates

Filing date	Jun 6, 2000
Grant date	Jul 23, 2002
Priority date	—
Expiry date	Jun 6, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C26/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a process for the coating of electric steel strips with an oxide powder as annealing separator by the application of an aqueous solution which contains mainly MgO and also at least one additive, including a chlorine-containing compound. The characterizing feature of the invention is that the additive added to the aqueous solution is ammonium chloride (NH4Cl or NH4Cl.nH2O).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.