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A kind of high heat-resistant wear-resistant ball for ball mill

A wear-resistant ball and ball mill technology, applied 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, reduce precipitates, The effect of reducing internal oxidation and improving peeling resistance

Active Publication Date: 2016-04-06
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, wear resistance, hardness and toughness, and cannot meet the requirements of the current society.

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 components 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 balance being Fe and some unavoidable impurities;

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

[0023] S1. Smelting: Add steel scrap to an intermediate frequency induction melting furnace and heat it to 1520°C. After holding for 20 minutes, add ferrochrome, ferromolybdenum, ferrovanadium, ferrotungsten, and ferroniobium. After complete melting, add ferrosilicon and ferromanganese. Raise the temperature to 1570°C and heat until it is completely melted, then add magnesium-nickel alloy, silicon-calcium alloy, iron-zirconium, and metal z...

Embodiment 2

[0028] The high heat-resistant and wear-resistant ball used in the ball mill of the present invention, its composition comprises 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 balance being Fe and some unavoidable impurities;

[0029] According to the above 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 steel scrap to an intermediate frequency induction melting furnace and heat to 1500°C. After holding for 45 minutes, add ferrochrome, ferromolybdenum, ferrovanadium, ferrotungsten, and ferroniobium. After complete melting, add ferrosilicon and ferromanganese. Raise the temperature to 1530°C and heat until it is completely melted, then add magnesium-nickel alloy, silicon-calcium alloy, zirconium iron, and metal zinc. After the raw...

Embodiment 3

[0035] The high heat-resistant and wear-resistant ball for the ball mill of the present invention, its composition comprises 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 balance being Fe and some unavoidable impurities;

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

[0037] S1. Smelting: Add steel scrap to an intermediate frequency induction melting furnace and heat to 1508°C. After holding for 32 minutes, add ferrochrome, ferromolybdenum, ferrovanadium, ferrotungsten and ferroniobium. After complete melting, add ferrosilicon and ferromanganese. Raise the temperature to 1544°C and heat until it is completely melted, then add magnesium-nickel alloy, silicon-calcium alloy, iron-zirconium, and metal zinc. After the raw mate...

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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 grinding 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 loss caused by wear will be even greater. [0003] Abrasive materials are generally used under corresponding working conditions, and their performance requirements are also different due to different use environments. Under dry grinding conditions, the failure modes of wear-resistant materials are mainly material wear, macroscopic fracture and wear surface deformation caused by abrasive wear. Therefore, the basic performance requirements for wear-resistant materials are proposed: (1) High hardness, high hardness...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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