Steel sheet and method for manufacturing same
A steel plate with controlled alloying and microstructural design addresses bendability and wear resistance issues, achieving enhanced bending formability and wear resistance through specific elemental composition and manufacturing processes.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- POHANG IRON & STEEL CO LTD
- Filing Date
- 2025-12-10
- Publication Date
- 2026-06-25
AI Technical Summary
Conventional high-hardness wear-resistant hot-rolled steel sheets face limitations in bendability due to high strength, and adding alloying elements for improved hardness and formability leads to microstructural non-uniformity and reduced bendability, while existing solutions fail to effectively balance strength, hardness, and bendability.
A steel plate composition with controlled alloying elements (C, Si, Mn, Cr, Mo, Nb, Ti, V, Al, P, S, N, B) and specific microstructural control through heating, rolling, and cooling processes to achieve a balanced microstructure of martensite and bainite, with a controlled Mn gradient, enhancing bendability and wear resistance.
The steel plate exhibits improved bendability and wear resistance, with a faster wear rate in the initial stages and high hardness, maintaining structural integrity during bending processes.
Smart Images
Figure KR2025095770_25062026_PF_FP_ABST