Hot press forming steel sheet, hot press forming member, and method for producing the same
CN122249580APending Publication Date: 2026-06-19POHANG IRON & STEEL CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- POHANG IRON & STEEL CO LTD
- Filing Date
- 2024-11-27
- Publication Date
- 2026-06-19
AI Technical Summary
Technical Problem
Existing hot-pressed components are susceptible to hydrogen embrittlement when heated at high temperatures, especially under ultra-high strength requirements, which limits their widespread application in automotive parts.
Method used
Hot-pressed steel sheets composed of a base steel sheet and an aluminum-based coating reduce hydrogen permeation and improve resistance to hydrogen embrittlement by forming a region with reduced carbon content and internal oxides near the interface between the base steel sheet and the coating.
Benefits of technology
It achieves hot-pressed components with ultra-high strength at high temperatures, while significantly improving resistance to hydrogen embrittlement, making it suitable for automotive structural components.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122249580A_ABST
Abstract
The present invention relates to steel sheets suitable for use as materials for vehicle body parts, and more particularly to steel sheets suitable for hot pressing, hot-pressed components manufactured therefrom, and methods for producing the same.
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