Wearable steel ball with high toughness and strength and preparation method thereof

A high-strength wear-resistant steel and high-toughness technology, applied in the field of wear-resistant materials, can solve the problems of poor wear resistance, low strength, and poor impact toughness.

Active Publication Date: 2017-05-31
ANHUI NINGGUO NINGHU STEEL BALL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the grinding medium steel balls of the ball mill are mainly chromium-based alloys, manganese-based alloys and other ball-milled steel castings or ball-milled iron castings, such as high-chromium steel balls, low-chromium steel balls, multi-element alloy steel balls, and vanadium-titanium-chromium alloys. Steel balls, etc., have the defects of poor impact toughness, low strength and poor wear resistance during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-toughness and high-strength wear-resistant steel ball proposed by the present invention, its chemical composition includes: C: 0.47%, Si: 0.25%, Mn: 3%, Cu: 0.03%, Cr: 1.5%, B: 0.003%, Mg: 0.06%, Ti: 0.01%, Zr: 0.04%, Nb: 0.03%, V: 0.05%, Mo: 0.2%, Ni: 0.1%, Ca+Ba: 0.018%, S: 0.01%, P: 0.02%, the balance is Fe and unavoidable impurities.

[0022] The present invention also proposes a method for preparing the high-toughness and high-strength wear-resistant steel ball, comprising the following steps:

[0023] S1. Put the raw materials into the vacuum induction furnace for smelting, remove the slag and deoxidize to obtain the alloy liquid;

[0024] S2. After the alloy liquid is cooled to 1430°C, it is poured into the cavity of the metal mold, taken out when the temperature of the alloy liquid drops to 950°C, and cooled to room temperature to obtain a wear-resistant ball body;

[0025] S3. Heating the wear-resistant ball green body to 880° C., holding it for 55 min...

Embodiment 2

[0027]A high-toughness and high-strength wear-resistant steel ball proposed by the present invention, its chemical composition includes: C: 0.35%, Si: 0.4%, Mn: 2%, Cu: 0.04%, Cr: 1%, B: 0.005%, Mg: 0.03%, Ti: 0.03%, Zr: 0.02%, Nb: 0.01%, V: 0.1%, Mo: 0.05%, Ni: 0.25%, Ca+Ba: 0.015%, S: 0.02%, P: 0.01%, the balance is Fe and unavoidable impurities.

[0028] The present invention also proposes a method for preparing the high-toughness and high-strength wear-resistant steel ball, comprising the following steps:

[0029] S1. Put the raw materials into the vacuum induction furnace for smelting, remove the slag and deoxidize to obtain the alloy liquid;

[0030] S2. After the alloy liquid is cooled to 1450°C, it is poured into the cavity of the metal mold, taken out when the temperature of the alloy liquid drops to 900°C, and cooled to room temperature to obtain a wear-resistant ball body;

[0031] S3. Heating the wear-resistant ball green body to 900°C, holding it for 40 minutes,...

Embodiment 3

[0033] A high-toughness and high-strength wear-resistant steel ball proposed by the present invention, its chemical composition includes: C: 0.43%, Si: 0.28%, Mn: 2.01%, Cu: 0.031%, Cr: 1.4%, B: 0.0036%, Mg: 0.055%, Ti: 0.0258%, Zr: 0.028%, Nb: 0.015%, V: 0.08%, Mo: 0.17%, Ni: 0.16%, Ca: 0.013%, Ba: 0.004%, S: 0.018%, P: 0.013%, and the rest are Fe and unavoidable impurities.

[0034] The present invention also proposes a method for preparing the high-toughness and high-strength wear-resistant steel ball, comprising the following steps:

[0035] S1, adding raw materials into a vacuum induction furnace for smelting, removing slag and deoxidizing to obtain alloy liquid; wherein, in the process of deoxidizing, the raw materials of the deoxidizer used include by weight: 50 parts of bauxite, 10 parts of calcium powder 2 parts, 20 parts of iron powder, 2 parts of silica, 5 parts of barite, 2 parts of coke;

[0036] S2. After the alloy liquid is cooled to 1435°C, it is poured into ...

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PUM

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Abstract

The invention discloses a wearable steel ball with high toughness and strength, of which the chemical composition comprises by weight: 0.35-0.47% of C, 0.25-0.4% of Si, 2-3% of Mn, 0.03-0.04% of Cu, 1-1.5% of Cr, 0.03-0.05% of B, 0.03-0.06% of Mg, 0.01-0.03% of Ti, 0.02-0.04% of Zr, 0.01-0.03% of Nb, 0.05-0.1% of V, 0.05-0.2% of Mo, 0.1-0.25% of Ni, 0.015-0.018% of Ca+Ba, 0.01-0.02% of S, 0.01-0.02% of P and the balance Fe and inevitable impurities. The invention also provides a preparation method of the wearable steel ball, the process is simple, and the wearable steel ball formed is high in toughness, strength and wear resistance.

Description

technical field [0001] The invention relates to the technical field of wear-resistant materials, in particular to a high-toughness and high-strength wear-resistant steel ball and a preparation method thereof. Background technique [0002] As the main equipment for material grinding in mines and cement industry, ball mill has been widely used. The steel ball of ball mill is an important consumable material in the operation of ball mill. The principle is to use the impact and grinding effect of wear-resistant ball and material to make For material crushing, the quality of wear-resistant balls directly affects the crushing quality of materials to be crushed, and the service life of wear-resistant balls directly affects labor productivity. Therefore, the requirements for wear-resistant balls are not only sufficient strength and hardness, but also good impact toughness. In the prior art, the grinding medium steel balls of the ball mill are mainly chromium-based alloys, manganese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/42C22C38/54C22C38/50C22C38/48C22C38/44C22C38/46C22C38/02C21D9/36C21D1/18C21C7/06
CPCC21C7/06C21D1/18C21D9/36C22C38/002C22C38/02C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/54C22C38/58
Inventor 秦本洋
Owner ANHUI NINGGUO NINGHU STEEL BALL
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