Method for manufacturing plated steel sheet having excellent surface quality and press formability, and plated steel sheet manufactured thereby
US-2018345339-A1 · Dec 6, 2018 · US
Sheet steel having a deterministic surface structure
US12233442B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12233442-B2 |
| Application number | US-202017641496-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 8, 2020 |
| Priority date | Sep 17, 2019 |
| Publication date | Feb 25, 2025 |
| Grant date | Feb 25, 2025 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The invention relates to sheet steel, more particularly a coated sheet steel, which is skin-pass rolled with a deterministic surface structure, and to a method for producing this steel.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sheet steel skin-pass rolled with a deterministic surface structure, where the surface structure, is impressed into the sheet steel starting from a surface of the sheet steel, the surface structure having a flank region which runs, starting from the surface, down to a valley region, wherein the valley region has a roughness Ra of less than 300 nm, the sheet steel having a zinc-based coating, and the coated sheet steel is oiled such that capillary forces acting in a direction of the flank region influences local oil distribution wherein the oil wets the valley region only in small parts or not at all and accumulates in the flank region due to the roughness Ra, wherein the valley region has a roughness Ra of less than 250 nm. 2. The sheet steel as claimed in claim 1 , where the flank region is configured with an angle (α) of between 1° and 89° to the perpendicular (O) of the sheet steel. 3. The sheet steel as claimed in claim 2 , wherein the zinc-based coating is applied by hot-dip coating, where in the coating, as well as zinc and unavoidable impurities, there includes additional elements including at least one of aluminum with a content of up to 5 wt % and magnesium with a content of up to 5 wt % in the coating. 4. The sheet steel as claimed in claim 1 , wherein the oil has a surface weight of up to 2 g/m 2 in the surface structure. 5. The sheet steel as claimed in claim 1 , wherein the oil has a surface weight of up to 1.5 g/m 2 in the surface structure. 6. The sheet steel as claimed in claim 1 , wherein the oil has a surface weight of up to 1 g/m 2 in the surface structure. 7. The sheet steel as claimed in claim 1 , wherein the valley region has a roughness Ra of less than 200 nm. 8. The sheet steel as claimed in claim 1 , wherein the valley region has a roughness Ra of less than 150 nm. 9. The sheet steel as claimed in claim 1 , wherein the valley region has a roughness Ra of less than 100 nm.
Assignees
Inventors
Classifications
Surface feature [e.g., rough, mirror] · CPC title
After-treatment (C23C2/14 takes precedence) · CPC title
Zinc or cadmium or alloys based thereon · CPC title
Flattening; Dressing; Flexing · CPC title
Roughness · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12233442B2 cover?
- The invention relates to sheet steel, more particularly a coated sheet steel, which is skin-pass rolled with a deterministic surface structure, and to a method for producing this steel.
- Who is the assignee on this patent?
- Thyssenkrupp Steel Europe Ag
- What technology area does this patent fall under?
- Primary CPC classification B21B1/227. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 25 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).