Insulating coating composition for oriented electrical steel sheet, oriented electrical steel sheet having insulating coating formed on surface thereof by using same, and preparation method therefor
US-2017313887-A1 · Nov 2, 2017 · US
Method for forming film and method for manufacturing electrical steel sheet with insulating film
US12033791B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12033791-B2 |
| Application number | US-202017769049-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 16, 2020 |
| Priority date | Oct 31, 2019 |
| Publication date | Jul 9, 2024 |
| Grant date | Jul 9, 2024 |
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- Title
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Abstract
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A method for forming a film on a surface of a steel sheet includes applying a treatment solution for forming a film containing a fibrous material to the surface of the steel sheet by using a coater under a condition in which a difference between a speed of the steel sheet and a speed of an applicator of the coater is 1.0 m/min or more, inclining the surface of the steel sheet, to which the treatment solution for forming a film has been applied, at an angle of 10° or more with respect to a horizontal plane until drying is started, and thereafter drying the steel sheet.
First claim
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The invention claimed is: 1. A method for forming a film on a surface of a steel sheet, the method comprising: applying a treatment solution for forming a film containing a fibrous material to the surface of the steel sheet by using a coater under a condition in which a difference between a speed of the steel sheet and a speed of an applicator of the coater is 1.0 m/min or more, inclining the surface of the steel sheet, to which the treatment solution for forming the film has been applied, at an angle of 10° or more with respect to a horizontal plane until a drying is started, and thereafter starting the drying of the steel sheet. 2. The method for forming a film according to claim 1 , wherein a surface tension of the treatment solution for forming a film is 60 mN/m or more and 80 mN/m or less. 3. The method for forming a film according to claim 1 , wherein a ratio of a long axis length to a short axis length (long axis length/short axis length) of the fibrous material is 1.5 or more and 50.0 or less. 4. The method for forming a film according to claim 2 , wherein a ratio of a long axis length to a short axis length (long axis length/short axis length) of the fibrous material is 1.5 or more and 50.0 or less. 5. The method for forming a film according to claim 1 , wherein a linear thermal expansion coefficient of the fibrous material in a temperature range of 25° C. to 800° C. is 1.0×10 −5 /K or less. 6. The method for forming a film according to claim 2 , wherein a linear thermal expansion coefficient of the fibrous material in a temperature range of 25° C. to 800° C. is 1.0×10 −5 /K or less. 7. The method for forming a film according to claim 3 , wherein a linear thermal expansion coefficient of the fibrous material in a temperature range of 25° C. to 800° C. is 1.0×10 −5 /K or less. 8. The method for forming a film according to claim 4 , wherein a linear thermal expansion coefficient of the fibrous material in a temperature range of 25° C. to 800° C. is 1.0×10 −5 /K or less. 9. A method for manufacturing an electrical steel sheet with an insulating film, the method comprising forming an insulating film on a surface of the electrical steel sheet by using the method for forming a film according to claim 1 . 10. A method for manufacturing an electrical steel sheet with an insulating film, the method comprising forming an insulating film on a surface of the electrical steel sheet by using the method for forming a film according to claim 2 . 11. A method for manufacturing an electrical steel sheet with an insulating film, the method comprising forming an insulating film on a surface of the electrical steel sheet by using the method for forming a film according to claim 3 . 12. A method for manufacturing an electrical steel sheet with an insulating film, the method comprising forming an insulating film on a surface of the electrical steel sheet by using the method for forming a film according to claim 4 . 13. A method for manufacturing an electrical steel sheet with an insulating film, the method comprising forming an insulating film on a surface of the electrical steel sheet by using the method for forming a film according to claim 5 . 14. A method for manufacturing an electrical steel sheet with an insulating film, the method comprising forming an insulating film on a surface of the electrical steel sheet by using the method for forming a film according to claim 6 . 15. A method for manufacturing an electrical steel sheet with an insulating film, the method comprising forming an insulating film on a surface of the electrical steel sheet by using the method for forming a film according to claim 7 . 16. A method for manufacturing an electrical steel sheet with an insulating film, the method comprising forming an insulating film on a surface of the electrical steel sheet by using the method for forming a film according to claim 8 .
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Classifications
containing phosphates · CPC title
Magnetic · CPC title
containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur · CPC title
containing copper · CPC title
containing aluminium · CPC title
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- What does patent US12033791B2 cover?
- A method for forming a film on a surface of a steel sheet includes applying a treatment solution for forming a film containing a fibrous material to the surface of the steel sheet by using a coater under a condition in which a difference between a speed of the steel sheet and a speed of an applicator of the coater is 1.0 m/min or more, inclining the surface of the steel sheet, to which the trea…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C21D9/46. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 09 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).