Surface treatment method for steel sheet, production method for steel sheet, and manufacturing method for press molded article
JP2025027782AActive Publication Date: 2025-02-28JFE STEEL CORP
Patent Information
- Application Number
- JP2023132913
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-08-17
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2043-08-17
AI Technical Summary
Benefits of technology
【0013】 本発明の態様によれば、鋼板表面に設定した任意の領域の算術平均粗さ(Ra)を、容易に低減可能となる。
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Abstract
To provide a steel sheet and a press molded article having enhanced formability by improving the surface roughness of the steel sheet more effectively than before.SOLUTION: In a surface treatment method for a steel sheet 1, a first region 1X is set on at least one of two surfaces facing each other in the thickness direction of the steel sheet 1. In the first region 1X, a tool 3 having a sliding surface 3A that is brought into contact with the steel sheet 1 is pressed against the surface of the steel sheet 1 and relatively slid along the surface of the first region 1X. The arithmetic mean roughness Ra of the slid region 1A on the surface is made lower than the arithmetic mean roughness Ra of the non-slid region.SELECTED DRAWING: Figure 1
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Citation Information
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