[미국특허]
NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME
원문보기
IPC분류정보
국가/구분
United States(US) Patent
공개
국제특허분류(IPC7판)
H01F-001/147
B05D-007/14
B05D-003/02
H01F-041/02
C08K-003/32
출원번호
17778178
(2020-11-20)
공개번호
20230033301
(2023-02-02)
우선권정보
JP-2019-210860 (2019-11-21)
국제출원번호
PCT/JP2020/043479
(2020-11-20)
발명자
/ 주소
FUJII, Hiroyasu
MAKI, Jun
TAKEDA, Kazutoshi
AKAGI, Akira
MIMURA, Hiroyuki
출원인 / 주소
NIPPON STEEL CORPORATION
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
A non-oriented electrical steel sheet according to one embodiment of the present invention includes a base metal steel sheet, and a composite coating film composed of a Zn-containing phosphate and an organic resin, the composite coating film being formed on a surface of the base metal steel sheet, w
A non-oriented electrical steel sheet according to one embodiment of the present invention includes a base metal steel sheet, and a composite coating film composed of a Zn-containing phosphate and an organic resin, the composite coating film being formed on a surface of the base metal steel sheet, wherein: a content of Zn in the composite coating film is 10 mg/m2 or more per side; and the product of an amount of oxygen in the base metal steel sheet and a sheet thickness of the base metal steel sheet is 50 ppm·mm or less.
대표청구항▼
1. A non-oriented electrical steel sheet, comprising: a base metal steel sheet, anda composite coating film composed of a Zn-containing phosphate and an organic resin, the composite coating film being formed on a surface of the base metal steel sheet,wherein:a content of Zn in the composite coating
1. A non-oriented electrical steel sheet, comprising: a base metal steel sheet, anda composite coating film composed of a Zn-containing phosphate and an organic resin, the composite coating film being formed on a surface of the base metal steel sheet,wherein:a content of Zn in the composite coating film is 10 mg/m2 or more per side, anda product of an amount of oxygen in the base metal steel sheet and a sheet thickness of the base metal steel sheet is 50 ppm·mm or less. 2. The non-oriented electrical steel sheet according to claim 1, wherein: the composite coating film further contains one or more elements selected from the group of Al, Mg and Ca. 3. The non-oriented electrical steel sheet according to claim 1, wherein: the organic resin includes one or more resins selected from the group of an acrylic resin, a styrene resin, an acrylic-styrene resin, an epoxy resin, a polyester resin, a phenol resin and a urethane resin. 4. A method for producing a non-oriented electrical steel sheet, the method comprising: a step of applying a coating solution to a surface of a base metal steel sheet, the coating solution containing a Zn-containing phosphate and an organic resin, anda step of forming a composite coating film in which a content of Zn is 10 mg/m2 or more per side by baking the coating solution in an atmosphere in which an oxygen concentration is 30% or less under conditions of a peak metal temperature being within a range of 250 to 450° C. and a tensile strength applied to the base metal steel sheet being 15 to 60 N/mm2. 5. The method for producing a non-oriented electrical steel sheet according to claim 4, wherein: the coating solution further contains one or more elements selected from the group of Al, Mg and Ca. 6. The method for producing a non-oriented electrical steel sheet according to claim 4, wherein: the organic resin includes one or more resins selected from the group of an acrylic resin, a styrene resin, an acrylic-styrene resin, an epoxy resin, a polyester resin, a phenol resin and a urethane resin. 7. The non-oriented electrical steel sheet according to claim 2, wherein: the organic resin includes one or more resins selected from the group of an acrylic resin, a styrene resin, an acrylic-styrene resin, an epoxy resin, a polyester resin, a phenol resin and a urethane resin. 8. The method for producing a non-oriented electrical steel sheet according to claim 5, wherein: the organic resin includes one or more resins selected from the group of an acrylic resin, a styrene resin, an acrylic-styrene resin, an epoxy resin, a polyester resin, a phenol resin and a urethane resin. 9. A non-oriented electrical steel sheet, comprising: a base metal steel sheet, anda composite coating film comprising a Zn-containing phosphate and an organic resin, the composite coating film being formed on a surface of the base metal steel sheet,wherein:a content of Zn in the composite coating film is 10 mg/m2 or more per side, anda product of an amount of oxygen in the base metal steel sheet and a sheet thickness of the base metal steel sheet is 50 ppm·mm or less.
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