Low-density clad steel sheet having excellent formability and fatigue property and manufacturing method therefor
US-2024326399-A1 · Oct 3, 2024 · US
Method for manufacturing warm pressed-formed members
US9498810B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9498810-B2 |
| Application number | US-201113991055-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 30, 2011 |
| Priority date | Dec 3, 2010 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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- Title
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- Abstract
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Abstract
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The invention provides methods for manufacturing warm press-formed members which can ensure post-coating corrosion resistance. A method for manufacturing warm press-formed members includes heating a steel sheet to a temperature in the range from 200 to 800° C. and warm press-forming the steel sheet at a temperature in the above range of temperatures, the steel sheet having a Zn—Ni alloy coating layer on its surface, the coating layer including 10 to 25 mass % Ni and the balance being Zn and inevitable impurities and having a coating weight of 10 to 90 g/m 2 .
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for manufacturing warm press-formed members, comprising heating a steel sheet to a temperature in the range from 200 to 800° C. and warm press-forming the steel sheet at a temperature in the above range of temperatures, the steel sheet having a lower coating layer and a Zn—Ni alloy coating layer in this order on the surface of the steel sheet, the lower coating layer including not less than 60 mass % Ni and the balance being Zn and inevitable impurities and having a coating weight of 0.01 to 5 g/m 2 , the Zn—Ni alloy coating layer including 10 to 25 mass % Ni and the balance being Zn and inevitable impurities and having a coating weight of 10 to 90 g/m 2 . 2. The method for manufacturing warm press-formed members according to claim 1 , wherein the steel sheet used further has, on the Zn—Ni alloy coating layer, at least one compound layer selected from Si-containing compound layers, Ti-containing compound layers, Al-containing compound layers and Zr-containing compound layers. 3. The method for manufacturing warm press-formed members according to claim 2 , wherein the compound layer contains an inorganic solid lubricant.
Assignees
Inventors
Classifications
Thermal after-treatment, e.g. treatment in oil bath · CPC title
- B32B15/013Primary
one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium · CPC title
for sheet metals · CPC title
containing silicon · CPC title
containing aluminium · CPC title
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Frequently asked questions
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- What does patent US9498810B2 cover?
- The invention provides methods for manufacturing warm press-formed members which can ensure post-coating corrosion resistance. A method for manufacturing warm press-formed members includes heating a steel sheet to a temperature in the range from 200 to 800° C. and warm press-forming the steel sheet at a temperature in the above range of temperatures, the steel sheet having a Zn—Ni alloy coating…
- Who is the assignee on this patent?
- Nakajima Seiji, Miyoshi Tatsuya, Nakamaru Hiroki, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B32B15/013. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 22 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).