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Wear-resistant ball with favorable mechanical properties

A wear-resistant ball and mechanics technology, applied in the field of wear-resistant balls

Inactive Publication Date: 2014-11-26
吴永
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The casting time of this technical solution is too long, and it is easy to decay to the initial state. This technical solution needs to be improved

Method used

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  • Wear-resistant ball with favorable mechanical properties
  • Wear-resistant ball with favorable mechanical properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A wear-resistant ball with good mechanical properties, the components and weight percentages are: C: 2.95%, Si: 1.24%, Mn: 0.7%, Cr: 21.5%, B: 0.1%, Mo: 0.45%, Re: 0.04%, S: 0.02%, P: 0.02%; the balance is Fe.

[0032] The production method of wear-resistant ball comprises the following steps:

[0033] (1) Add steel scrap, pig iron, and ferrosilicon, and use an intermediate frequency furnace for smelting. When the temperature is 1520°C, add ferromanganese that has been preheated, and perform component analysis and adjustment; when the temperature is 1570°C, add aluminum strips for deoxidation treatment, and Carry out slag removal treatment;

[0034] (2) add Re and carry out metamorphic treatment: particle size 1.0mm, when 55% molten iron is poured into ladle, add with molten iron;

[0035] (3) Casting: Casting is carried out 6 minutes after step (2) is completed, the temperature is 1380°C, and the casting time is 6 minutes;

[0036] (4) Unpacking and grinding, the un...

Embodiment 2

[0040] A wear-resistant ball with good mechanical properties, the components and weight percentages are: C: 3.0%, Si: 1.2%, Mn: 0.8%, Cr: 21%, B: 0.2%, Mo: 0.4%, Re: 0.06%, S: 0.01%, P: 0.01%; the balance is Fe.

[0041] The production method of wear-resistant ball comprises the following steps:

[0042] (1) Add steel scrap, pig iron, and ferrosilicon, and use an intermediate frequency furnace for smelting. When the temperature is 1530°C, add ferromanganese that has been preheated, and perform component analysis and adjustment; when the temperature is 1560°C, add aluminum strips for deoxidation treatment, and Carry out slag removal treatment;

[0043] (2) add Re to carry out metamorphic treatment: particle size 1.2mm, when 50% molten iron is poured into ladle, add with molten iron;

[0044] (3) Casting: 8 minutes after step (2) is completed, the casting is carried out at a temperature of 1360° C., and the casting time is 8 minutes;

[0045] (4) Unpacking and grinding, the u...

Embodiment 3

[0049] A wear-resistant ball with good mechanical properties, the components and weight percentages are: C: 3.0%, Si: 1.2%, Mn: 0.75%, Cr: 21.3%, B: 0.15%, Mo: 0.45%, Re: 0.05%, S: 0.016%, P: 0.015%; the balance is Fe.

[0050] The production method of wear-resistant ball comprises the following steps:

[0051] (1) Add steel scrap, pig iron, and ferrosilicon, and use an intermediate frequency furnace for smelting. When the temperature is 1525°C, add ferromanganese that has been preheated, and perform component analysis and adjustment; when the temperature is 1565°C, add aluminum strips for deoxidation treatment, and Carry out slag removal treatment;

[0052] (2) add Re to carry out metamorphic treatment: particle size 1.1mm, when 52% molten iron is poured into ladle, add with molten iron;

[0053] (3) Casting: Casting is carried out 7 minutes after step (2) is completed, the temperature is: 1370°C, and the casting time is 7 minutes;

[0054] (4) Unpacking and grinding, the ...

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Abstract

The invention discloses a wear-resistant ball with favorable mechanical properties, which comprises the following components in percentage by weight: 2.95-3.0% of C, 1.2-1.24% of Si, 0.7-0.8% of Mn, 21-21.5% of Cr, 0.1-0.2% of B, 0.4-0.45% of Mo, 0.04-0.06% of Re, at most 0.02% of S, at most 0.02% of P and the balance of Fe. By using the reasonable formula design and the reasonable smelting, casting and heat treatment techniques, the overall mechanical properties of the wear-resistant cast ball are enhanced. The casting time and casting duration are controlled to prevent the shrinkage porosity and shrinkage voids from generation and enhance the toughness and wear resistance of the wear-resistant cast ball. The Shore A-type hardness is greater than or equal to 62, the impact value is greater than or equal to 8.2 J / cm<2>, the falling ball impact fatigue life is greater than or equal to 20000 times, the core hardness and surface hardness are basically the same, and the breaking ratio is lower than 7%.

Description

technical field [0001] The invention relates to the technical field of wear-resistant balls, in particular to a wear-resistant ball with good mechanical properties. Background technique [0002] The ball mill is the key equipment for crushing the material after it is crushed. It is widely used in the production industries of cement, silicate products, new building materials, refractory materials, chemical fertilizers, glass ceramics, etc., for dry or wet grinding of various ores and other grindable materials. The ball mill is composed of feeding part, discharging part, rotary part, reducer, small transmission gear, motor, electric control and other main parts. The hollow shaft is made of cast steel, and the lining can be replaced. The rotary gear is processed by casting hobbing. The cylinder is inlaid with a wear-resistant liner, which has good wear resistance. [0003] Wear-resistant cast ball refers to the crushing medium used in the ball mill, which is used to crush the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08B02C17/20
Inventor 吴永
Owner 吴永
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