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High-quality wear resisting ball and preparation process thereof

A preparation process and technology of wear-resistant balls, applied in the field of wear-resistant balls, can solve problems such as low hardness and easy corrosion, and achieve the effects of uniform distribution, improved quality, and fine graphite

Inactive Publication Date: 2018-02-23
NINGGUO ZHENGXING WEAR RESISTANT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the existing wear-resistant balls provided by the prior art have the advantages of high wear resistance and long service life, they still have the defects of low hardness and easy corrosion

Method used

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  • High-quality wear resisting ball and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-quality wear-resistant ball, composed of the following elements: C: 2.6%, Si: 2.4%, Mn: 0.4%, Cr: 2.0%, Nd: 0.003%, Te: 0.01%, Cu: 0.05% , B: 0.005%, Zn: 0.1%, Sr: 0.04%, P≤0.05%, S≤0.05%, the balance is Fe;

[0024] The preparation process of the high-quality wear-resistant ball includes the following steps:

[0025] (1) Add pig iron, steel scrap, ferromanganese, ferrochrome, ferro-nd, sodium tellurate, brass, borax, ferro-zinc, ferro-strontium, recarburizer to the intermediate frequency induction furnace in turn, heat and smelt to obtain molten iron, and then carry out Static slag removal;

[0026] (2) Put yttrium-based heavy rare earth ferrosilicon alloy, ferrosilicon magnesium ingot, iron filings, barium, and calcium into the crusher for crushing and screening, then mix with light rare earth magnesium spheroidizer, and finally cold press to form composite balls spheroidizing agent, adjust the temperature of the molten iron to 1400°C, and add the obtained co...

Embodiment 2

[0031] A high-quality wear-resistant ball, composed of the following elements: C: 3.5%, Si: 1.5%, Mn: 0.9%, Cr: 1.5%, Nd: 0.01%, Te: 0.005%, Cu: 0.1% , B: 0.001%, Zn: 0.5%, Sr: 0.01%, P≤0.05%, S≤0.05%, and the balance is Fe.

[0032] The preparation process of the high-quality wear-resistant ball includes the following steps:

[0033] (1) Add pig iron, steel scrap, ferromanganese, ferrochrome, ferro-nd, sodium tellurate, brass, borax, ferro-zinc, ferro-strontium, recarburizer to the intermediate frequency induction furnace in turn, heat and smelt to obtain molten iron, and then carry out Static slag removal;

[0034] (2) Put yttrium-based heavy rare earth ferrosilicon alloy, ferrosilicon magnesium ingot, iron filings, barium, and calcium into the crusher for crushing and screening, then mix with light rare earth magnesium spheroidizer, and finally cold press to form composite balls spheroidizing agent, adjust the temperature of molten iron to 1430°C, and add the obtained com...

Embodiment 3

[0039] A high-quality wear-resistant ball, composed of the following elements: C: 2.7%, Si: 2.0%, Mn: 0.5%, Cr: 1.9%, Nd: 0.005%, Te: 0.008%, Cu: 0.07% , B: 0.004%, Zn: 0.2%, Sr: 0.03%, P≤0.05%, S≤0.05%, and the balance is Fe.

[0040] The preparation process of the high-quality wear-resistant ball includes the following steps:

[0041] (1) Add pig iron, steel scrap, ferromanganese, ferrochrome, ferro-nd, sodium tellurate, brass, borax, ferro-zinc, ferro-strontium, recarburizer to the intermediate frequency induction furnace in turn, heat and smelt to obtain molten iron, and then carry out Static slag removal;

[0042] (2) Put yttrium-based heavy rare earth ferrosilicon alloy, ferrosilicon magnesium ingot, iron filings, barium, and calcium into the crusher for crushing and screening, then mix with light rare earth magnesium spheroidizer, and finally cold press to form composite balls spheroidizing agent, adjust the temperature of molten iron to 1410°C, and add the obtained com...

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Abstract

The invention relates to the technical field of wear resisting balls, in particular to a high-quality wear resisting ball and a preparation process thereof. The high-quality wear resisting ball comprises the following elements in percentage: 2.6-3.5% of C, 1.5-2.4% of Si, 0.4-0.9% of Mn, 1.5-2.0% of Cr, 0.003-0.01% of Nd, 0.005-0.01% of Te, 0.05-0.1% of Cu, 0.001-0.005% of B, 0.1-0.5% of Zn, 0.01-0.04% of Sr, P not more than 0.05%, S not more than 0.05%, and the balance of Fe. The wear resisting ball effectively makes up the defects of low hardness and easy corrosion in a traditional wear resisting ball to a certain extent.

Description

technical field [0001] The invention relates to the technical field of wear-resistant balls, in particular to a high-quality wear-resistant ball and a preparation process thereof. Background technique [0002] Wear-resistant ball is a kind of crushing medium used in ball mills, used to crush the materials in the mill, one is white cast iron with chromium as the main alloying element, referred to as chromium alloy cast iron, and the cast iron with chromium alloy cast iron as material The grinding ball is called chromium alloy cast iron grinding ball; the other is that the casting grinding ball made of ductile iron is called ductile iron grinding ball, and the matrix structure obtained by heat treatment is mainly bainite. Martensitic ductile iron grinding ball; the matrix structure obtained by heat treatment is mainly martensitic ductile iron grinding ball, referred to as martensitic ductile iron grinding ball. [0003] With the development of industry, various large-scale ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C37/06C22C33/10C21D1/18C25D3/56B02C17/20
CPCB02C17/20C21D1/18C22C33/10C22C37/06C22C37/10C25D3/56Y02P10/20
Inventor 李根有李骏
Owner NINGGUO ZHENGXING WEAR RESISTANT MATERIALS
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