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Heat resistant, high-strength and wear resistant ball with high hardness for ball grinder

A wear-resistant ball and ball mill technology, applied in the field of wear-resistant materials, can solve the problems of heat resistance, impact resistance, hardness, heat resistance, wear resistance and toughness.

Inactive Publication Date: 2014-10-15
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, impact resistance, hardness, heat resistance, wear resistance and toughness, and cannot meet the requirements of modern society.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The heat-resistant high-strength high-hardness wear-resistant ball for the ball mill of the present invention, its composition comprises by mass fraction: C: 1.3%, Mn: 0.12%, Si: 0.81%, Ni: 0.33%, Cr: 4.2%, Mo: 1.3%, V: 1.0%, Nb: 0.2%, Ca: 0.038%, Zr: 0.015%, Cu: 0.03%, S: 0.022%, P: 0.031%, the balance is Fe and unavoidable impurities;

[0024] Prepare the heat-resistant high-strength high-hardness wear-resistant ball for the ball mill according to the above-mentioned composition ratio according to the following process:

[0025] S1. Add steel scrap to the medium frequency induction melting furnace and heat it to 1500°C. After holding for 45 minutes, add ferrochrome, ferromolybdenum, ferrovanadium and ferroniobium. After complete melting, add ferrosilicon and ferromanganese, and heat up to 1530°C After complete melting, add nickel alloy, silicon-calcium alloy, and ferro-zirconium. After the raw materials are completely melted and slag removed, molten steel is obtained,...

Embodiment 2

[0031] The heat-resistant, high-strength, high-hardness wear-resistant ball for the ball mill of the present invention comprises: C: 2.0%, Mn: 0.22%, Si: 0.53%, Ni: 0.21%, Cr: 5.5%, Mo: 1.5%, V:0.9%, Nb:0.5%, Ca:0.01%, Zr:0.012%, Cu:0.01%, S:0.025%, P:0.029%, the balance is Fe and unavoidable impurities;

[0032] Prepare the heat-resistant high-strength high-hardness wear-resistant ball for the ball mill according to the above-mentioned composition ratio according to the following process:

[0033] S1. Add steel scrap to the medium frequency induction melting furnace and heat it to 1520°C. After holding for 20 minutes, add ferrochrome, ferromolybdenum, ferrovanadium and ferroniobium. After complete melting, add ferrosilicon and ferromanganese, and heat up to 1570°C After complete melting, add nickel alloy, silicon-calcium alloy, and ferro-zirconium. After the raw materials are completely melted and slag removed, molten steel is obtained, poured, and the mold is opened after th...

Embodiment 3

[0039] The heat-resistant high-strength high-hardness wear-resistant ball for the ball mill of the present invention comprises: C: 1.7%, Mn: 0.46%, Si: 0.74%, Ni: 0.45%, Cr: 5.95%, Mo: 1.1%, V:0.7%, Nb:0.4%, Ca:0.024%, Zr:0.01%, Cu:0.015%, S:0.022%, P:0.03%, the balance is Fe and unavoidable impurities;

[0040] Prepare the heat-resistant high-strength high-hardness wear-resistant ball for the ball mill according to the above-mentioned composition ratio according to the following process:

[0041] S1. Add steel scrap to the medium frequency induction melting furnace and heat to 1508°C. After holding for 33 minutes, add ferrochrome, ferromolybdenum, ferrovanadium and ferroniobium. After complete melting, add ferrosilicon and ferromanganese, heat up to 1554°C After complete melting, add nickel alloy, silicon-calcium alloy, and ferro-zirconium. After the raw materials are completely melted and slag removed, molten steel is obtained, poured, and the mold is opened after the molten...

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Abstract

The invention discloses a heat resistant, high-strength and wear resistant ball with high hardness for a ball grinder. The heat resistant, high-strength and wear resistant ball comprises the following components: C, Mn, Si, Ni, Cr, Mo, V, Nb, Ca, Zr, Cu, S, P, balance of Fe and inevitable impurities; the ultrasonic auxiliary laser-cladding technology is adopted to modify the surface of the wear resistant ball, wherein parameters of the ultrasonic auxiliary laser-cladding technology are as follows: a laser is a CO2 laser, the power is 1450-1650 W, the powder feeding rate is 0.4-0.5 g / min; the scanning speed is 3-5 mm / s, the layering thickness is 0.4-0.6 mm, the overlapping rate is 20-28%, the supersonic frequency is 17-19 kHz, the ultrasonic power supply current is 0.02-0.08 A and the applied cladding powder comprises 20-30 parts of WO3 powder, 30-50 parts of V2O5 powder, 50-80 parts of C powder, and 300-500 parts of Ni 60 self-melting powder. The wear resistant ball provided by the invention has excellent impact strength, hardness, heat resistance and wearing resistance.

Description

technical field [0001] The invention relates to the technical field of wear-resistant materials, in particular to a heat-resistant, high-strength, high-hardness 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) H...

Claims

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Application Information

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IPC IPC(8): C22C38/50C21D9/36C23C24/10B02C17/20
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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