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High-chromium, high-hardness and high-tenacity wear-resisting ball and preparation method thereof

A high-hardness, high-toughness technology, applied in the field of wear-resistant balls, to achieve the effect of increasing hardness and toughness, increasing yield strength, and increasing hardness and toughness

Inactive Publication Date: 2017-06-09
WUHU BEISI SCI & TECH PARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, wear-resistant balls cannot fully meet the performance requirements. How to effectively improve the hardness and toughness of wear-resistant balls is a technical problem urgently needed to be solved by those skilled in the art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present invention proposes a wear-resistant ball with high chromium, high hardness and high toughness. The weight percentage of each component is as follows: C: 2.84%, Mn: 1.26%, S: 0.048%, P: 0.053%, Si: 0.81% , Cr: 15.83%, Mo: 0.16%, V: 0.07%, W: 0.015%, Ti: 0.04%, Bi: 0.02%, rare earth: 0.010%, Nb: 0.26%, the rest is Fe and unavoidable impurities.

Embodiment 2

[0021] The method for preparing a wear-resistant ball with high chromium, high hardness and high toughness of the present invention includes the following steps:

[0022] S1. Smelt iron nuggets, carbon powder, manganese nuggets, sulfur powder, phosphorous powder, silicon powder, chromium ingots, molybdenum ingots, vanadium ingots, tungsten ingots, titanium powder, bismuth ingots and niobium ingots at a temperature of 1400℃ , The alloy liquid is obtained, and then rare earth is added for spheroidization, and the temperature of the spheroidization is 1550℃;

[0023] S2. Perform refining, desulfurization and deoxidation of the alloy liquid after spheroidization in S1 for testing. The alloy liquid includes the following components by weight percentage: C: 2.74%, Mn: 1.28%, S: 0.046%, P: 0.055% , Si: 0.71%, Cr: 16.83%, Mo: 0.14%, V: 0.09%, W: 0.01%, Ti: 0.06%, Bi: 0.01%, rare earth: 0.015%, Nb: 0.24%, the rest is Fe and Inevitable impurities;

[0024] S3. Pour the alloy liquid obtained ...

Embodiment 3

[0026] The method for preparing a wear-resistant ball with high chromium, high hardness and high toughness of the present invention includes the following steps:

[0027] S1. Smelt iron nuggets, carbon powder, manganese nuggets, sulfur powder, phosphorous powder, silicon powder, chromium ingots, molybdenum ingots, vanadium ingots, tungsten ingots, titanium powder, bismuth ingots and niobium ingots. The melting temperature is 1450℃ , The alloy liquid is obtained, and then rare earth is added for spheroidizing treatment, and the spheroidizing temperature is 1450℃;

[0028] S2. Perform refining, desulfurization and deoxidation to the alloy liquid that has been spheroidized in S1 for testing. The alloy liquid includes the following components by weight percentage: C: 2.94%, Mn: 1.24%, S: 0.050%, P: 0.051% , Si: 0.91%, Cr: 14.83%, Mo: 0.18%, V: 0.05%, W: 0.02%, Ti: 0.02%, Bi: 0.03%, rare earth: 0.005%, Nb: 0.28%, the rest is Fe and Inevitable impurities;

[0029] S3. Pour the alloy liqu...

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Abstract

The invention discloses a high-chromium, high-hardness and high-tenacity wear-resisting ball. The high-chromium, high-hardness and high-tenacity wear-resisting ball comprises, by weight, 2.74%-2.94% of C, 1.24%-1.28% of Mn, 0.046%-0.050% of S, 0.051%-0.055% of P, 0.71%-0.91% of Si, 14.83%-16.83% of Cr, 0.14%-0.18% of Mo, 0.05%-0.09% of V, 0.01%-0.02% of W, 0.02%-0.06% of Ti, 0.01%-0.03% of Bi, 0.005%-0.015% of rare earth, 0.24%-0.28% of Nb, and the balance Fe and inevitable impurities. The invention further provides a preparation method of the high-chromium, high-hardness and high-tenacity wear-resisting ball. The wear-resisting ball prepared through the method is high in hardness and good in tenacity.

Description

Technical field [0001] The invention relates to the field of wear-resistant balls, in particular to a wear-resistant ball with high chromium, high hardness and high toughness and a preparation method thereof. Background technique [0002] Ball mill is one of the high-fine grinding machines widely used in industrial production. Wear-resistant parts are the grinding material media of ball mill equipment. They produce grinding and peeling effect through the collision and friction between wear-resistant parts and between wear-resistant parts and materials. They are important basic parts and are widely used in mines, cement plants and power plants. During the production process. In the prior art, the wear-resistant ball still cannot fully meet the performance requirements. How to effectively improve the hardness and toughness of the wear-resistant ball is a technical problem urgently needed to be solved by those skilled in the art. Summary of the invention [0003] In order to solve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C37/06C22C33/08C21D5/00B02C17/20
Inventor 张宏标张倍思
Owner WUHU BEISI SCI & TECH PARK
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