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
Hot-pressed member, coated member, steel sheet for hot pressing, method for manufacturing hot-pressed member, and method for manufacturing coated member
US12590342B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12590342-B2 |
| Application number | US-202118272628-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 22, 2021 |
| Priority date | Jan 22, 2021 |
| Publication date | Mar 31, 2026 |
| Grant date | Mar 31, 2026 |
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- Title
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Abstract
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A hot-pressed member is disclosed including at least one surface that has a filtered centerline waviness Wca of less than or equal to 1.5 μm.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A hot-pressed member comprising at least one surface that has a filtered centerline waviness Wca of less than or equal to 1.5 μm, and further comprising a plated layer disposed on the at least one surface, the plated layer having a thickness of 10 to 80 μm, the plated layer having a composition consisting of Al and one or more further elements selected from the group consisting of Si and Mg. 2 . The hot-pressed member according to claim 1 , wherein the at least one surface has a line roughness Ra of less than or equal to 2.0 μm and a skewness Rsk of less than or equal to 0. 3 . A coated member comprising: a base member that comprises the hot-pressed member according to claim 1 ; and a coating layer disposed on at least one surface of the base member and having a thickness of greater than or equal to 15 μm. 4 . A coated member comprising: a base member that comprises the hot-pressed member according to claim 2 ; and a coating layer disposed on at least one surface of the base member and having a thickness of greater than or equal to 15 μm. 5 . A method for manufacturing the hot-pressed member according to claim 1 , the method comprising: heating a steel sheet for hot pressing to a temperature range of an Ac 3 transformation temperature to 1000° C., the steel sheet for hot pressing having at least one surface that has a filtered centerline waviness Wca of less than or equal to 0.75 μm; and subsequently hot-pressing the steel sheet for hot pressing. 6 . A method for manufacturing the coated member according to claim 3 , the method comprising: heating a steel sheet for hot pressing to a temperature range of an Acs transformation temperature to 1000° C., the steel sheet for hot pressing having at least one surface that has a filtered centerline waviness Wca of less than or equal to 0.75 μm; hot-pressing the steel sheet for hot pressing; and subsequently providing a coating layer having a thickness of greater than or equal to 15 μm.
Assignees
Inventors
Classifications
containing more than 50% by weight of zinc · CPC title
Plates; Strips · CPC title
Aluminium or alloys based thereon · CPC title
Zinc or cadmium or alloys based thereon · CPC title
containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur · CPC title
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- What does patent US12590342B2 cover?
- A hot-pressed member is disclosed including at least one surface that has a filtered centerline waviness Wca of less than or equal to 1.5 μm.
- 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 Mar 31 2026 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).