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High-silicon and medium-chromium grinding ball and secondary metamorphic processing technique thereof

A technology of secondary metamorphism and processing technology, applied in the field of grinding balls and its processing, can solve the problems of reducing the service life of boilers, large consumption, and consumption of steel materials, etc., and achieve the goals of saving raw material consumption, prolonging service life, and reducing operating costs Effect

Active Publication Date: 2014-04-23
安徽中建材开源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ball mill is widely used in cement, mining, thermal power, building materials and other industries. Grinding ball is the most commonly used grinding body in ball mill, and consumes the most in use. With the development of industry, the mill gradually tends to be larger. Ordinary The formula and the wear resistance, hardness, toughness and impact resistance of the grinding balls processed by traditional processing methods can no longer meet the requirements of the existing large-scale mills, resulting in a substantial increase in the consumption of grinding balls, which not only consumes a large amount of steel materials , and a large amount of iron powder enters the boiler, corrodes the boiler parts and reduces the service life of the boiler

Method used

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  • High-silicon and medium-chromium grinding ball and secondary metamorphic processing technique thereof
  • High-silicon and medium-chromium grinding ball and secondary metamorphic processing technique thereof
  • High-silicon and medium-chromium grinding ball and secondary metamorphic processing technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare high-silicon medium-chromium grinding balls with a specification of Φ100 as follows:

[0026] (1) Conduct component testing on 100 kg of steel. According to the test results, the contents of C, S, and P are all within the required range, and the types of other elements contained meet the requirements, and the contents are not exceeding the standard. Add 3 kg of ferrosilicon with a silicon content of 70%, 3.5 kg of ferromanganese with a manganese content of 60%, and 27 kg of ferrochrome with a chromium content of 58% in the steel, and send them into the melting furnace for heating and smelting. When the temperature reaches 1460°C, samples are taken for chemical composition analysis, C: 2.35%, Si: 1.79%, Mn: 1.31%, P: 0.035%, S: 0.022%, Cr: 8.98%, B: 0.0064%, Ti: 0.024 %, all components are within the required range, without fine-tuning, when the temperature reaches 1530°C, precipitation deoxidation and final deoxidation are carried out in sequence;

[0027] (2) ...

Embodiment 2

[0033] Prepare high-silicon medium-chromium grinding balls with a specification of Φ90 as follows:

[0034] (1) Conduct component testing on 100 kg of steel. According to the test results, the contents of C, S, and P are all within the required range, and the types of other elements contained meet the requirements, and the contents are not exceeding the standard. Add 3 kg of ferrosilicon with a silicon content of 70%, 3.5 kg of ferromanganese with a manganese content of 60%, and 27 kg of ferrochrome with a chromium content of 58% in the steel, and send them into the melting furnace for heating and smelting. When the temperature reached 1460°C, samples were taken for chemical composition analysis, and the analysis results were C: 2.35%, Si: 1.79%, Mn: 1.31%, P: 0.035%, S: 0.022%, Cr: 8.98%, B: 0.0064%, Ti: 0.024%, all components are within the required range, without fine-tuning, when the temperature reaches 1530°C, precipitation deoxidation and final deoxidation are carried ou...

Embodiment 3

[0041] Prepare high-silicon medium-chromium grinding balls with a specification of Φ80 as follows:

[0042] (1) The composition of 80 kg of steel was tested. According to the test results, the contents of C, S, and P were all within the required range, and the types of other elements contained met the requirements, and the contents did not exceed the standard. Add 1.5 kg of ferrosilicon with a silicon content of 70%, 1.8 kg of ferromanganese with a manganese content of 60%, and 14 kg of ferrochrome with a chromium content of 58% in the steel, and send them into the melting furnace for heating and smelting. When the temperature of the molten iron reaches At 1460°C, samples were taken for chemical composition analysis, and the analysis results were C: 2.47%, Si: 1.81%, Mn: 1.05%, P: 0.035%, S: 0.022%, Cr: 8.93%, B: 0.0078%, Ti: 0.021%, all components are within the required range, without fine-tuning, when the temperature reaches 1500°C, precipitation deoxidation and final deoxi...

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Abstract

The invention discloses a high-silicon and medium-chromium grinding ball and a secondary metamorphic processing technique thereof. The high-silicon and medium-chromium grinding ball comprises the following components by weight percent: 2.2-2.3 percent of C, 1.7-2.2 percent of Si, 0.8-1.5 percent of Mn, 0-0.05 percent of P, 0-0.05 percent of S, 6.0-9.0 percent of Cr, 0.003-0.008 percent of B, 0.01-0.025 percent of Ti and the balance of Fe, wherein the weight ratio of the Ti and the B is higher than 3. The materials are processed with the special secondary metamorphic processing technique to produce the high-silicon and medium-chromium grinding ball with the advantages of high wear resistance, high hardness, high toughness and high impact resistance.

Description

technical field [0001] The invention relates to a grinding ball and a processing method thereof, in particular to a high-silicon medium-chromium grinding ball and its secondary modification processing technology. Background technique [0002] Wear is one of the main forms of workpiece failure, and wear causes a large amount of energy and steel raw material consumption. Ball mill is widely used in cement, mining, thermal power, building materials and other industries. Grinding ball is the most commonly used grinding body in ball mill, and consumes the most in use. With the development of industry, the mill gradually tends to be larger. Ordinary The formula and the wear resistance, hardness, toughness and impact resistance of the grinding balls processed by traditional processing methods can no longer meet the requirements of the existing large-scale mills, resulting in a substantial increase in the consumption of grinding balls, which not only consumes a large amount of steel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C33/04C21C7/00C21C7/06C21D1/18
Inventor 汪德发徐超汤新明
Owner 安徽中建材开源新材料科技有限公司