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High-carbon, low-chromium and low-tungsten grinding ball high in hardness and resistant to impact and preparation method thereof

A high-hardness, impact-resistant technology, applied in the field of wear-resistant balls, to achieve the effect of extending service life, improving wear resistance and corrosion resistance

Inactive Publication Date: 2017-06-20
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 improve the hardness and impact resistance of wear-resistant balls is a technical problem that those skilled in the art need to solve urgently.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-carbon, low-chromium, low-tungsten, high-hardness and impact-resistant wear-resistant ball proposed by the present invention has the following weight percentages of its components: C: 0.95%, Cr: 0.65%, Si: 2.15%, Mn: 0.7%, Mo: 0.5%, Ni: 0.55%, Rare Earth: 0.175%, V: 0.055%, B: 0.25%, Ti: 0.055%, W: 0.20%, Nb: 0.3%, Ta: 0.07%, Al: 0.06%, Cu: 0.9%, S: 0.025%, P: 0.015%, and the balance is Fe and unavoidable impurities.

Embodiment 2

[0022] A method for preparing a high-carbon, low-chromium, low-tungsten, high-hardness and impact-resistant wear-resistant ball of the present invention comprises the following steps:

[0023] S1. Iron block, carbon powder, chromium ingot, silicon powder, manganese block, molybdenum ingot, nickel block, vanadium ingot, boron block, titanium powder, tungsten block, niobium block, thallium ingot, aluminum ingot, copper block, sulfur powder Smelting with phosphorus powder at a melting temperature of 1400°C to obtain alloy liquid, and then adding rare earth for spheroidization treatment at a temperature of 1550°C;

[0024] S2. Carry out refining desulfurization and deoxidation to the spheroidized alloy liquid in S1, and perform detection. The alloy liquid includes the following components by weight percentage: C: 0.85%, Cr: 0.8%, Si: 1.4%, Mn: 0.8% , Mo: 0.4%, Ni: 0.65%, Rare Earth: 0.05%, V: 0.08%, B: 0.15%, Ti: 0.10%, W: 0.15%, Nb: 0.4%, Ta: 0.02%, Al: 0.08% , Cu: 0.6%, S: 0.03...

Embodiment 3

[0027] A method for preparing a high-carbon, low-chromium, low-tungsten, high-hardness and impact-resistant wear-resistant ball of the present invention comprises the following steps:

[0028] S1. Iron block, carbon powder, chromium ingot, silicon powder, manganese block, molybdenum ingot, nickel block, vanadium ingot, boron block, titanium powder, tungsten block, niobium block, thallium ingot, aluminum ingot, copper block, sulfur powder Smelting with phosphorus powder at a melting temperature of 1450°C to obtain an alloy solution, and then adding rare earth for spheroidization treatment at a temperature of 1450°C;

[0029] S2. Carry out refining desulfurization and deoxidation to the alloy liquid that has been spheroidized in S1, and perform detection. The alloy liquid includes the following components by weight percentage: C: 1.05%, Cr: 0.5%, Si: 2.9%, Mn: 0.6% , Mo: 0.6%, Ni: 0.45%, Rare Earth: 0.30%, V: 0.03%, B: 0.35%, Ti: 0.01%, W: 0.25%, Nb: 0.2%, Ta: 0.12%, Al: 0.04% ...

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Abstract

The invention discloses a high-carbon, low-chromium and low-tungsten grinding ball high in hardness and resistant to impact. The high-carbon, low-chromium and low-tungsten grinding ball high in hardness and resistant to impact comprises the components of C, Cr, Si, Mn, Mo, Ni, rare earth, V, B, Ti, W, Nb, Ta, Al, Cu, S, P, Fe and inevitable impurities. The invention further discloses a preparation method of the high-carbon, low-chromium and low-tungsten grinding ball high in hardness and resistant to impact. According to the high-carbon, low-chromium and low-tungsten grinding ball high in hardness and resistant to impact and the preparation method of the high-carbon, low-chromium and low-tungsten grinding ball high in hardness and resistant to impact, by means of reasonable selection of the components, the hardness and the impact resistance of the grinding ball are improved, and the service life of the grinding ball is prolonged.

Description

technical field [0001] The invention relates to the field of wear-resistant balls, in particular to a high-carbon, low-chromium, low-tungsten, high-hardness, impact-resistant wear-resistant ball and a preparation method thereof. Background technique [0002] Ball mill is one of the high-fine grinding machines widely used in industrial production. The wear-resistant ball is the grinding material medium of the ball mill equipment. The friction between the wear-resistant balls and the friction between the wear-resistant ball and the material produces grinding and peeling. It is an important basic component and is widely used in mines, cement plants and power plants. in the production process. In the prior art, wear-resistant balls cannot fully meet the performance requirements. How to improve the hardness and impact resistance of wear-resistant balls is a technical problem urgently needed to be solved by those skilled in the art. Contents of the invention [0003] In order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/02C22C38/04C22C38/12C22C38/14C22C38/32C22C38/06C22C38/16C22C33/04C21D1/32B02C17/20
Inventor 张宏标张倍思
Owner WUHU BEISI SCI & TECH PARK
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