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High-hardness and wear-resistant ball and preparation method thereof

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

Active 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 hardness, impact resistance, 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 composition of the high-hardness wear-resistant ball of the present invention includes by mass fraction: C: 0.02%, Mn: 0.44%, W: 0.03%, Si: 0.64%, Ni: 0.45%, Cr: 8.3%, Mo: 0.11 %, V: 0.9%, Nb: 0.2%, Ca: 0.018%, Zr: 0.015%, Cu: 0.01%, Zn: 0.035%, S: 0.028%, P: 0.033%, the balance is Fe and unavoidable Impurities.

[0024] The preparation method of the high hardness wear-resistant ball of the present invention comprises the following steps:

[0025] S1. Smelting: Add steel scrap to an intermediate frequency induction melting furnace and heat to 1502°C. After holding for 40 minutes, add ferrochrome, ferromolybdenum, ferrovanadium, ferroniobium, and ferrotungsten. After complete melting, add ferrosilicon and ferromanganese. Raise the temperature to 1570°C and heat until it is completely melted, then add nickel alloy, silicon-calcium alloy, iron-zirconium, and metal zinc. After the raw materials are completely melted and slag removed, molten steel is obtained. After pou...

Embodiment 2

[0030]The high hardness wear-resistant ball of the present invention, its composition includes by mass fraction: C: 0.06%, Mn: 0.38%, W: 0.022%, Si: 0.81%, Ni: 0.38%, Cr: 5%, Mo: 0.13 %, V: 1.0%, Nb: 0.45%, Ca: 0.01%, Zr: 0.014%, Cu: 0.03%, Zn: 0.01%, S: 0.02%, P: 0.03%, the balance is Fe and unavoidable Impurities.

[0031] The preparation method of the high hardness wear-resistant ball of the present invention comprises the following steps:

[0032] S1. Melting: 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, ferroniobium, and ferrotungsten. After complete melting, add ferrosilicon and ferromanganese. Raise the temperature to 1540°C and heat until it is completely melted, then add nickel alloy, silicon-calcium alloy, iron-zirconium, and metal zinc. After the raw materials are completely melted and slag removed, molten steel is obtained. After pouring,...

Embodiment 3

[0037] The high-hardness wear-resistant ball of the present invention, its composition includes by mass fraction: C: 0.05%, Mn: 0.86%, W: 0.01%, Si: 0.53%, Ni: 0.21%, Cr: 9.8%, Mo: 0.15 %, V: 0.7%, Nb: 0.5%, Ca: 0.038%, Zr: 0.015%, Cu: 0.018%, Zn: 0.019%, S: 0.021%, P: 0.029%, the balance is Fe and unavoidable Impurities.

[0038] The preparation method of the high hardness wear-resistant ball of the present invention comprises the following steps:

[0039] S1. Smelting: Add steel scrap to an intermediate frequency induction melting furnace and heat it to 1500°C. After holding for 45 minutes, add ferrochrome, ferromolybdenum, ferrovanadium, ferroniobium, and ferrotungsten. After complete melting, add ferrosilicon and ferromanganese. Raise the temperature to 1530°C and heat until it is completely melted, then add nickel alloy, silicon-calcium alloy, iron-zirconium, and metal zinc. After the raw materials are completely melted and slag removed, molten steel is obtained. After p...

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Abstract

The invention discloses a high-hardness and wear-resistant ball. The high-hardness and wear-resistant ball comprises components of C, Mn, W, Si, Ni, Cr, Mo, V, Nb, Ca, Zr, Cu, Zn, S and P. The invention further discloses a preparation method for the high-hardness and wear-resistant ball, wherein a heat treatment process of the preparation method comprises the following steps: heating the temperature to 980-1030 DEG C, keeping the temperature for 50-80 min, and cooling to the room temperature; heating the temperature to 800-820 DEG C, keeping the temperature for 30-75 min, and cooling to the room temperature; heating the temperature to 500-530 DEG C, keeping the temperature for 130-150 min, and cooling to the room temperature. According to the preparation method, the surface of the wear-resistant ball is modified by using the reactive nitrogen arc cladding, and cladding powder is a composition of titanium powder and graphite powder, wherein the titanium powder comprises components of C, Mo, Si, Fe, Cl, N, O, H, and the balance Ti; the cladding current is 150-180 A; a nitrogen flow rate is 12-18 L / min. The wear-resistant ball provided by the invention has high hardness, and meanwhile, has excellent impact strength, heat resistance, wearing resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of wear-resistant materials, in particular to a high-hardness wear-resistant ball and a preparation method thereof. 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, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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