High-heat-resistant and wear-resistant ball for ball mill

A wear-resistant ball and ball mill technology, used in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve the problems of poor heat resistance, wear resistance, hardness and toughness of wear-resistant balls, and reduce precipitates, The effect of refining grains and reducing internal oxidation

Active Publication Date: 2014-10-08
宁国市宁武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

However, the existing wear-resistant balls have poor performance in terms of heat resistance, w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The high heat-resistant and wear-resistant ball for the ball mill of the present invention comprises the following by mass fraction: C: 1.3%, Mn: 0.29%, Si: 0.81%, Ni: 0.21%, Cr: 5.95%, Mo: 1.5% , V: 1.0%, W: 1.5%, Nb: 0.36%, Ca: 0.038%, Zr: 0.012%, Mg: 0.02%, Zn: 0.10%, Cu: 0.01%, S: 0.028%, P: 0.033% , the remainder is Fe and some inevitable impurities;

[0022] According to the above-mentioned composition ratio, the high heat-resistant and wear-resistant balls for the ball mill are prepared according to the following process:

[0023] S1. Melting: Add the scrap steel into the intermediate frequency induction melting furnace, and heat it to 1520 ° C. After holding for 20 minutes, add ferrochromium, ferromolybdenum, ferrovanadium, ferrotungsten, and ferroniobium. After complete melting, add ferrosilicon and ferromanganese. The temperature is raised to 1570°C, heated to complete melting, and then magnesium-nickel alloy, silicon-calcium alloy, zirconium iron, and metall...

Embodiment 2

[0028] The high heat-resistant and wear-resistant ball for the ball mill of the present invention comprises the following by mass fraction: C: 2.2%, Mn: 0.12%, Si: 0.71%, Ni: 0.45%, Cr: 5.32%, Mo: 1.1% , V: 0.8%, W: 4.5%, Nb: 0.5%, Ca: 0.019%, Zr: 0.015%, Mg: 0.05%, Zn: 0.02%, Cu: 0.018%, S: 0.020%, P: 0.030% , the remainder is Fe and some inevitable impurities;

[0029] According to the above-mentioned composition ratio, the high heat-resistant and wear-resistant balls for the ball mill are prepared according to the following process:

[0030] S1. Melting: Add the scrap steel into the intermediate frequency induction melting furnace, and heat it to 1500 ° C. After holding for 45 minutes, add ferrochromium, ferromolybdenum, ferrovanadium, ferrotungsten, and ferroniobium. After complete melting, add ferrosilicon and ferromanganese. The temperature is raised to 1530°C and heated to complete melting, and then magnesium-nickel alloy, silicon-calcium alloy, zirconium iron, and met...

Embodiment 3

[0035] The high heat-resistant and wear-resistant ball for the ball mill of the present invention comprises the following by mass fraction: C: 1.9%, Mn: 0.46%, Si: 0.53%, Ni: 0.32%, Cr: 4.2%, Mo: 1.22% , V: 0.7%, W: 3.4%, Nb: 0.2%, Ca: 0.038%, Zr: 0.015%, Mg: 0.06%, Zn: 0.07%, Cu: 0.03%, S: 0.025%, P: 0.028% , the remainder is Fe and some inevitable impurities;

[0036] According to the above-mentioned composition ratio, the high heat-resistant and wear-resistant balls for the ball mill are prepared according to the following process:

[0037] S1. Melting: Add the scrap steel into the intermediate frequency induction melting furnace, and heat it to 1508 ° C. After holding for 32 minutes, add ferrochromium, ferromolybdenum, ferrovanadium, ferrotungsten, and ferroniobium. After complete melting, add ferrosilicon and ferromanganese. The temperature is raised to 1544°C, heated to complete melting, and then magnesium-nickel alloy, silicon-calcium alloy, zirconium iron, and metalli...

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Abstract

The invention discloses a high-heat-resistant and wear-resistant ball for a ball mill. The high-heat-resistant and wear-resistant ball comprises the following components: C, Mn, Si, Ni, Cr, Mo, V, W, Nb, Ca, Zr, Mg, Zn, Cu, S, P, Fe and impurities. Different temperature rise rates are adopted in the heat treatment process, and the surface of the wear-resistant ball is modified by using a laser cladding method. Laser cladding powder comprises the following components: Cr, C, Si, B, Re, Al2O3, Ni, nano CeO2 and nano SiC; the process parameters of laser cladding are that in single-channel scanning, a laser pool is protected by argon, the laser power is set to be 1.5-2.0KW, the light panel diameter is 1-2.5mm, and the cladding speed is 2-4mm/s. The high-heat-resistant and wear-resistant ball for the ball mill, which is disclosed by the invention, has excellent heat-resistant performance, and also has good wear-resistant performance, hardness and toughness.

Description

technical field [0001] The invention relates to the technical field of abrasive materials, in particular to a high heat-resistant and wear-resistant ball for a ball mill. Background technique [0002] Frictional behavior is ubiquitous, causing huge national economic losses. The survey found that abrasive wear alone causes industrial countries to lose 1%-4% of their gross national product every year. With the rapid economic development and social progress, the social losses caused by wear and tear will be even greater. [0003] Wear materials are generally used under corresponding working conditions, and their performance requirements are also different due to different use environments. Under the condition of dry grinding, the failure modes of wear-resistant materials are mainly material wear caused by abrasive wear, macroscopic fracture and deformation of the wear surface. Therefore, the basic performance requirements for wear-resistant materials are proposed: (1) High har...

Claims

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Application Information

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IPC IPC(8): C22C38/56C22C38/50C21D9/36C23C24/10C23F17/00
Inventor 丁仕武丁幸徐帮明
Owner 宁国市宁武新材料科技有限公司
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