Ultrahigh-strength, high-toughness, wear-resistant steel plate and manufacturing method thereof

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United States of America Patent

PATENT NO 9816165
APP PUB NO 20150191806A1
SERIAL NO

14418417

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Abstract

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The invention provides a wear-resistant steel plate, which has the following chemical composition (wt. %): C: 0.22-0.35%, Si: 0.10-0.40%, Mn: 0.60-1.35%, P: ≦0.015%, S: ≦0.010%, Nb: 0.010-0.040%, Al: 0.010-0.080%, B: 0.0006-0.0014%, Ti: 0.005-0.050%, Ca: 0.0010-0.0080%, V≦0.080%, Cr≦0.60%, W≦1.00 wt. %, N≦0.0080%, O≦0.0060%, H≦0.0004%, wherein 0.025%≦Nb+Ti≦0.080%, 0.030%≦Al+Ti≦0.12%, and the balance of Fe and unavoidable impurities. The method of manufacturing the wear-resistant steel plate comprises the steps of smelting, casting, rolling, post-rolling direct cooling and the like. The wear-resistant steel plate obtained from the above composition and process has high strength, high hardness, good low-temperature toughness, and excellent machinability, and is suitable for quick-wear devices in engineering and mining machinery, such as bucket and scraper transporter, etc.

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Patent Owner(s)

Patent OwnerAddress
BAOSHAN IRON & STEEL CO LTD201900 FUJIN ROAD BAOSHAN DISTRICT SHANGHAI 885 SHANGHAI CITY SHANGHAI CITY 201900

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Hongbin Shanghai, CN 52 129
Miao, Yuchuan Shanghai, CN 5 10
Yao, Liandeng Shanghai, CN 13 24

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