US 2018/0022927 A1 · ELECTRICAL STEEL SHEET

Abstract

An electrical steel sheet has an insulating coating on a steel sheet surface. The insulating coating includes one or more selected from an inorganic salt, an oxide, and an organic resin. The insulating coating includes the inorganic salt and/or the oxide in an amount of 50% or more by mass in total based on the total mass of the insulating coating. The insulating coating has a fluorine concentration ranging from 2 ppm to 130 ppm. The insulating coating is free of a chromium compound. The insulating coating of this electrical steel sheet has excellent coating compatibility.

Claims5

Dependent claims

An electrical steel sheet having an insulating coating on a steel sheet surface, wherein the insulating coating comprises one or more selected from an inorganic salt, an oxide and an organic resin, wherein

the insulating coating contains, based on a total mass of the insulating coating, 50% or more by mass in total of:
the inorganic salt and/or the oxide,
has a fluorine concentration ranging from 2 ppm to 130 ppm, and
is free of a chromium compound.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/545,760Filed 2 Feb 2016

Priority

JP 2015-0210815 Feb 2015

Published

25 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification25 codes

C09D 1/00
Coating compositions
B05D 1/06
Involving the use of an electrostatic field: applying particulate materials
B05D 3/0254
By baking: after-treatment
B05D 7/14
Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying…

Electrical steel sheet

Life of this patent

Electrical steel sheet

Life of this patent

Abstract

Claims5