A corrosion-resistant and wear-resistant steel plate and its manufacturing method

By controlling the chemical composition and process parameters, corrosion-resistant and wear-resistant steel plates were prepared, solving the problems of insufficient wear resistance, acid resistance and alkali resistance in existing technologies, and realizing the manufacturing of high-strength, high-hardness and low-cost steel plates.

CN117467911BActive Publication Date: 2026-07-17BAOSHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Filing Date
2023-07-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Currently, there is no steel plate that can simultaneously possess excellent wear resistance, acid resistance, and alkali resistance, and the cost is high, making it difficult to meet the needs of use in harsh environments.

Method used

Corrosion-resistant and wear-resistant steel plates are prepared by controlling the chemical composition of steel plates, including the contents of C, Si, Mn, Mo, Nb, V, Ti, Cr, B, Sb, Cu, Ni and RE, and by controlling the martensitic structure and retained austenite, using processes such as smelting, heating, rolling and online cooling.

Benefits of technology

This technology achieves high strength, high hardness, and excellent acid and alkali resistance in steel plates under harsh environments, reducing manufacturing costs and improving welding performance and production efficiency.

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Abstract

This disclosure discloses a corrosion-resistant and wear-resistant steel plate and its manufacturing method. The steel plate, by weight percentage, comprises: C: 0.15% ≤ C ≤ 0.25%; Si: 0.10% ≤ Si ≤ 0.50%; Mn: 0.50% ≤ Mn ≤ 1.50%; Mo: 0.01% ≤ Mo ≤ 0.50%; Nb: 0.005% ≤ Nb ≤ 0.050%; V: 0.01% ≤ V ≤ 0.10%; Ti: 0.005% ≤ Ti ≤ 0.050%; Al: 0.010% ≤ Al ≤ 0.060%; Cr: 2.00% ≤ Cr ≤ 5.00%; B: 0. 0.0005~0.0050wt.%; P: 0.010%≤P≤0.030%, and also contains one or more of the following: Cu: 0.10≤Cu≤0.40%, Ni: 0.20≤Ni≤1.00%, RE: 0.01≤RE≤0.10%, Sb: 0.01%≤Sb≤0.20%, with the balance being Fe and unavoidable impurities. The method for manufacturing the above steel plate includes the steps of: (1) smelting and casting; (2) heating; (3) rolling; and (4) online cooling. The steel plate disclosed herein combines excellent acid and alkali resistance with wear resistance.
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