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High-carbon corrosion-wear-resistant cast semi-automatic ball mill lining plate steel and preparation method and application thereof

A corrosion-resistant, wear-resistant, ball mill lining technology, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of high cost, impact corrosion and wear resistance can not reach the expected service life, etc., to achieve increased content, excellent toughness, The effect of improving the structure of the rust layer

Active Publication Date: 2021-05-04
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impact corrosion and wear resistance of the high-carbon corrosion-resistant and wear-resistant cast semi-automatic ball mill liner steel currently developed cannot meet the expected service life (6 months), and it takes more than 20 hours to maintain and replace the liner once, and the cost is huge

Method used

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  • High-carbon corrosion-wear-resistant cast semi-automatic ball mill lining plate steel and preparation method and application thereof
  • High-carbon corrosion-wear-resistant cast semi-automatic ball mill lining plate steel and preparation method and application thereof
  • High-carbon corrosion-wear-resistant cast semi-automatic ball mill lining plate steel and preparation method and application thereof

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preparation example Construction

[0040] The present invention provides a method for preparing the high-carbon corrosion-resistant and wear-resistant casting semi-automatic ball mill liner steel described in the technical solution, comprising the following steps:

[0041] According to the raw material ratio of high-carbon corrosion-resistant and wear-resistant cast semi-automatic ball mill liner steel, the corresponding raw materials are smelted and cast in sequence to obtain castings;

[0042] The casting is sequentially subjected to quenching treatment, first tempering treatment and second tempering treatment to obtain a high-carbon corrosion-resistant and wear-resistant casting semi-automatic ball mill liner.

[0043] In the present invention, according to the above raw material ratio, the corresponding raw materials are sequentially smelted and cast to obtain castings. In the present invention, the smelting process preferably includes desulfurization, dephosphorization and slagging, pre-deoxidation, alloyi...

Embodiment 1

[0054] The chemical composition and mass percentage of high-carbon corrosion-resistant and wear-resistant semi-automatic ball mill liner steel are: C 0.6%, Si0.3%, Mn 0.9%, Ni 0.1%, Cr 0.2%, Mo 0.25%, Cu 0.1%, Ti 0.01% , Nb 0.02%, P0.05%, S 0.02%, and the balance Fe and unavoidable impurities.

[0055] The preparation method of the above-mentioned high-carbon corrosion-resistant and wear-resistant semi-automatic ball mill liner steel:

[0056] (1) Melting and casting: accurately calculate the ingredients according to the stated ingredients, and place the raw materials in an intermediate frequency induction melting furnace, using CaO-CaF 2 (the mass percentage added is 0.8% of the total casting amount) to carry out desulfurization, dephosphorization and slag removal, heat up to 1530-1540°C, and use pure aluminum wire for pre-deoxidation for 2min (the amount of aluminum wire added is 0.7kg / ton of steel); continue to heat up The molten steel is subjected to alloying treatment at...

Embodiment 2

[0069] The chemical composition and mass percentage of high-carbon corrosion-resistant and wear-resistant semi-automatic ball mill liners are: C 0.9%, Si0.5%, Mn 1.3%, Ni 0.5%, Cr 0.3%, Mo 0.5%, Cu 0.3%, Ti 0.06%, Nb 0.08%, P 0.05%, S 0.02%, and the balance Fe and unavoidable impurities.

[0070] The preparation method of the above-mentioned high-carbon corrosion-resistant and wear-resistant semi-automatic ball mill liner steel:

[0071] (1) Melting and casting: accurately calculate the ingredients according to the stated ingredients, and place the raw materials in an intermediate frequency induction melting furnace, using CaO-CaF 2 (the mass percentage added is 0.8% of the total casting amount) to carry out desulfurization, dephosphorization and slag removal, heat up to 1530-1540°C, and use pure aluminum wire for pre-deoxidation for 2min (the amount of aluminum wire added is 0.7kg / ton of steel); continue to heat up The molten steel is subjected to alloying treatment at 1550°...

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Abstract

The invention provides high-carbon corrosion-wear-resistant cast semi-automatic ball mill lining plate steel and a preparation method and application thereof, and belongs to the technical field of semi-automatic ball mill lining plates. According to the steel, Cu, Cr and Ni elements with good corrosion resistance are taken as main elements, and the alloy elements are enriched in a rust layer, so that formation of an amorphous rust layer is promoted, the structure of the rust layer is improved, the density and the cohesiveness to the steel surface are improved, and the isolation effect with the atmosphere is enhanced, thereby slowing down the corrosion rate and effectively improving the corrosion resistance of the steel; and meanwhile, Ti and Nb elements are added, the content of a Mo element is increased, the corrosion-resistance of the cast steel can be effectively improved, and the wear resistance of the cast steel is improved while the toughness is guaranteed. Results of the embodiment show that the high-carbon corrosion-wear-resistant semi-automatic ball mill lining plate not only has better wear resistance, but also is high in hardness and excellent in toughness, and has impact-corrosion resistance and high impact-corrosion-wear resistance at the same time.

Description

technical field [0001] The invention relates to the technical field of semi-automatic ball mill liner plates, in particular to a high-carbon corrosion-resistant and wear-resistant cast semi-automatic ball mill liner steel and its preparation method and application. Background technique [0002] Cast steel is a kind of cast alloy, which is mainly composed of iron, carbon and other elements, and is specially used to make steel for steel castings. High-carbon cast steel refers to iron-carbon alloys with a mass fraction of carbon in the steel ranging from 0.60 to 1.70%. This type of steel will have higher strength, wear resistance and fatigue limit after proper heat treatment. Wear is one of the three main forms of failure of mechanical parts, and it is a common phenomenon in industry, agriculture and people's daily production and life. The most widely used and most consumed wear-resistant materials are metal wear-resistant materials. Metal wear-resistant materials mainly inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/50B02C17/22C21D9/00C22C33/04
CPCC22C38/02C22C38/04C22C38/44C22C38/42C22C38/50C22C38/48C22C33/04C21D9/0081B02C17/22
Inventor 陈湘茹裴慧雯戴龙龙覃宋林罗传越马文高张继彬张峰刘海宁徐智帅翟启杰
Owner SHANGHAI UNIV
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