Method for producing a steel component having a metal coating protecting it against corrosion
US-2020216925-A1 · Jul 9, 2020 · US
Flat steel product having improved processing properties
US12098441B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12098441-B2 |
| Application number | US-202318543606-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 18, 2023 |
| Priority date | Nov 2, 2021 |
| Publication date | Sep 24, 2024 |
| Grant date | Sep 24, 2024 |
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- Title
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Abstract
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A flat steel product for production of a sheet metal component by hot forming includes a steel substrate consisting of a steel including 0.1-3% by weight of Mn and optionally up to 0.01% by weight of B, an aluminium-based coating disposed on at least one side of the steel substrate. A coating here has an applied layer weight of 15-30 g/m 2 . In addition, the coating has an Al base layer consisting of 1.0-15% by weight of Si, optionally 2-4% by weight of Fe, 0.1-5.0% by weight of alkali metals or alkaline earth metals, and optional further constituents, the contents of which are limited to a total of not more than 2.0% by weight, and aluminium as the balance.
First claim
Opening claim text (preview).
The invention claimed is: 1. A flat steel product for production of a sheet metal component by hot forming, comprising: a) a steel substrate consisting of a steel including 0.1-3% by weight of Mn and up to 0.01% by weight of B, and b) aluminum-based coating disposed on at least one side of the steel substrate, wherein the coating has an applied layer weight of 15-30 g/m 2 and has an Al base layer consisting of 1.0-15% by weight of Si, 2-4% by weight of Fe, 0.1-5.0% by weight of alkali metals or alkaline earth metals, and optional further constituents, the contents of which are limited to a total of not more than 2.0% by weight, and aluminum as the balance, wherein the coating has an alloy layer that lies atop the steel substrate and atop which the Al base layer is disposed, where the alloy layer consists of 35-60% by weight of Fe, and further constituents, the contents of which are limited to a total of not more than 5.0% by weight, and aluminum as the balance. 2. The flat steel product according to claim 1 , wherein the content of alkali metals or alkaline earth metals in the Al base layer comprises 0.1-0.5% by weight of Mg. 3. The flat steel product according to claim 2 , wherein the content of alkali metals or alkaline earth metals in the Al base layer comprises at least 0.0015-4.9% by weight of Ca. 4. The flat steel product according to claim 3 , wherein the steel substrate has a proportion of diffusible hydrogen H diff of not more than 15 ppm by weight.
Assignees
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Classifications
Plates; Strips · CPC title
- C23C2/12Primary
Aluminium or alloys based thereon · CPC title
containing manganese · CPC title
with silicon as the next major constituent · CPC title
Martensite · CPC title
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- What does patent US12098441B2 cover?
- A flat steel product for production of a sheet metal component by hot forming includes a steel substrate consisting of a steel including 0.1-3% by weight of Mn and optionally up to 0.01% by weight of B, an aluminium-based coating disposed on at least one side of the steel substrate. A coating here has an applied layer weight of 15-30 g/m 2 . In addition, the coating has an Al base layer consist…
- Who is the assignee on this patent?
- Thyssenkrupp Steel Europe Ag
- What technology area does this patent fall under?
- Primary CPC classification C23C2/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 24 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).