High-strength casted air-colled bainite wear-resisting steel and preparing method

A bainite and wear-resistant steel technology, applied in the field of wear-resistant materials, can solve the problems of poor use safety, low plasticity and toughness, etc., and achieve the effects of improved toughness, improved cast steel structure, and low production cost
CN1775983AInactive Publication Date: 2006-05-24CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2006-05-24
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to a high strength foundry air cooling bainite wear resistant steel that the chemical constituents is 0.32-0.65 C, 0.8-3.0 Si, 1.2-3.0 Mn, 0.5-0.8 Cr, 0.3-0.8 Cu, 0.001-0.008 B, 0.18-0.35 Al, 0.05-0.15 Y, 0.05-0.20 Ti, 0-0.12 Mg, 0-0.12 Ca, 0-0.15 Zn, and 0.10<Mg+Ca+Zn<0.25, the else is Fe and trace impurities. The process includes the following steps: smelting waste steel, pig iron, ferrochrome iron and copper board, adding ferrosilicon and ferromanganese preliminary deoxidation into melting down and alloying; heating to 1600-1660 degree centigrade after adjusting the constituents adding aluminum deoxidatioin and alloying and blast furnace tapping; putting the compounding modification particle of Yt, boron, titanium, magnesium, calcium, and zinc on the bottom of pouring ladle, taking modification process to the molten steel; molding the molten steel after modification process into normal matrix for casting. The invention could prolong the useful life of antifriction component, improve working efficiency, and have good economic benefit.
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Description

technical field

[0001] The invention relates to a high-strength cast air-cooled bainite wear-resistant steel and a preparation method thereof, belonging to the technical field of wear-resistant materials. Background technique

[0002] Abrasive wear is one of the main forms of metal material consumption by wearing parts in industries such as electric power, transportation, mining, metallurgy, machinery, chemical industry, petroleum, military industry and aerospace. How to improve the wear resistance of wear-resistant materials, prolong their service life and reduce costs is an urgent problem to be solved by the production and use departments of wear-resistant materials. Due to the simple production process and superior comprehensive mechanical properties of air-cooled bainitic steel, it has become a new type of wear-resistant steel and is widely used in wear-resistant fields such as electric power, transportation, mining, metallurgy, and machinery. Japanese patent JP11152520...

Claims

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