Method for manufacturing separator roll
US-2019312249-A1 · Oct 10, 2019 · US
Method of determining tension pattern and method of coiling steel sheet
US12440880B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12440880-B2 |
| Application number | US-202117998807-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 19, 2021 |
| Priority date | May 19, 2020 |
| Publication date | Oct 14, 2025 |
| Grant date | Oct 14, 2025 |
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- Title
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Abstract
Official abstract text for this publication.
Provided are methods that can prevent either or both of kinking and collapsing of a steel sheet coiled in coil form regardless of the characteristics of the steel sheet. A method of determining a tension pattern of tension applied to a steel sheet to coil the steel sheet in coil form comprises calculating the tension pattern using an apparent elastic modulus in a radial direction of a coil.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of coiling a steel sheet, the method comprising: determining a tension pattern of tension applied to the steel sheet when coiling the steel sheet on a mandrel of a tension reel; and coiling the steel sheet on the mandrel of the tension reel according to the determined tension pattern to achieve a coil, wherein the determining the tension pattern comprises calculating a stress distribution in the coil after removal from the mandrel using an apparent elastic modulus in a radial direction of a coil comprising steel sheet layers and an air layer present therebetween, the apparent elastic modulus being obtained through actual measurement. 2. The method of coiling a steel sheet according to claim 1 , wherein when determining the tension pattern, circumferential stress in the coil after removal from the mandrel is used as an objective variable or a constraint condition. 3. The method of coiling a steel sheet according to claim 1 , wherein when determining the tension pattern, radial stress in the coil after removal from the mandrel is used as an objective variable or a constraint condition. 4. The method of coiling a steel sheet according to claim 1 , wherein a sheet thickness of the steel sheet is 0.5 mm or less. 5. The method of coiling a steel sheet according to claim 1 , wherein the steel sheet has a coating layer on at least one surface thereof. 6. The method of coiling a steel sheet according to claim 2 , wherein when determining the tension pattern, radial stress in the coil after removal from the mandrel is used as an objective variable or a constraint condition. 7. The method of coiling a steel sheet according to claim 2 , wherein a sheet thickness of the steel sheet is 0.5 mm or less. 8. The method of coiling a steel sheet according to claim 3 , wherein a sheet thickness of the steel sheet is 0.5 mm or less. 9. The method of coiling a steel sheet according to claim 2 , wherein the steel sheet has a coating layer on at least one surface thereof. 10. The method of coiling a steel sheet according to claim 3 , wherein the steel sheet has a coating layer on at least one surface thereof. 11. The method of coiling a steel sheet according to claim 4 , wherein the steel sheet has a coating layer on at least one surface thereof.
Assignees
Inventors
Classifications
- C21D9/46Primary
for sheet metals · CPC title
Flattening; Dressing; Flexing · CPC title
in winding mechanisms or in connection with winding operations · CPC title
in rotating drums · CPC title
for monitoring the tension or advance of the material · CPC title
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Frequently asked questions
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- What does patent US12440880B2 cover?
- Provided are methods that can prevent either or both of kinking and collapsing of a steel sheet coiled in coil form regardless of the characteristics of the steel sheet. A method of determining a tension pattern of tension applied to a steel sheet to coil the steel sheet in coil form comprises calculating the tension pattern using an apparent elastic modulus in a radial direction of a coil.
- 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 Oct 14 2025 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).