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Low-abrasion alloyed wear-resistant cast ball and preparation method thereof

A wear-resistant casting ball and alloying technology, applied in the field of wear-resistant casting balls, can solve problems such as unfavorable rational utilization of non-renewable resources and increased cost.

Active Publication Date: 2021-04-16
ANHUI RUITAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of precious and rare alloying elements to prepare grinding balls not only greatly increases the cost, but also is not conducive to the rational utilization of non-renewable resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a low-wear alloyed wear-resistant cast ball, comprising the following steps:

[0033] S1. Add pig iron, ferromanganese alloy, ferrosilicon alloy, ferrochrome alloy, electrolytic nickel, red copper, ferroboron alloy and recarburizer into the electric furnace, heat and melt at a temperature of 1500°C to obtain molten iron. The chemical composition of molten iron is determined by mass The percentages are as follows: C: 2.4%, Si: 2.5%, Mn: 1.0%, Ni: 0.8%, Cu: 0.7%, Cr: 0.25%, B: 0.01%, and the balance is Fe and unavoidable impurities;

[0034] S2. Take the molten iron out of the furnace, and add nano-silicon carbide equivalent to 0.05% of the weight of the molten iron and an alloy inoculant equivalent to 0.4% of the weight of the molten iron to inoculate with the flow when the molten iron is released, and add the molten iron after being released into the ladle , and place a nickel-magnesium alloy spheroidizer equivalent to 0.4% of the weight of molten...

Embodiment 2

[0038] A method for preparing a low-wear alloyed wear-resistant cast ball, comprising the following steps:

[0039] S1. Add pig iron, ferromanganese alloy, ferrosilicon alloy, ferrochrome alloy, electrolytic nickel, red copper, ferroboron alloy and recarburizer into the electric furnace, and heat and melt at a temperature of 1520°C to obtain molten iron. The chemical composition of molten iron is determined by mass The percentages are as follows: C: 2.6%, Si: 3.0%, Mn: 1.2%, Ni: 1.0%, Cu: 0.6%, Cr: 0.2%, B: 0.015%, and the balance is Fe and unavoidable impurities;

[0040] S2. Take the molten iron out of the furnace, and add nano-silicon carbide equivalent to 0.1% of the weight of the molten iron and an alloy inoculant equivalent to 0.5% of the weight of the molten iron to inoculate with the flow when the molten iron is released, and add the molten iron after being released into the ladle , and place a nickel-magnesium alloy spheroidizer equivalent to 0.5% of the weight of mol...

Embodiment 3

[0044] A method for preparing a low-wear alloyed wear-resistant cast ball, comprising the following steps:

[0045] S1. Add pig iron, ferromanganese alloy, ferrosilicon alloy, ferrochrome alloy, electrolytic nickel, red copper, ferroboron alloy and recarburizer into the electric furnace, heat and melt at a temperature of 1540°C to obtain molten iron. The chemical composition of molten iron is determined by mass The percentages are as follows: C: 2.8%, Si: 3.3%, Mn: 1.5%, Ni: 1.2%, Cu: 0.4%, Cr: 0.15%, B: 0.02%, and the balance is Fe and unavoidable impurities;

[0046] S2. Take the molten iron out of the furnace, and add nano-silicon carbide equivalent to 0.15% of the weight of the molten iron and an alloy inoculant equivalent to 0.6% of the weight of the molten iron to inoculate with the flow when the molten iron is released, and add the molten iron after being released into the ladle , and place a nickel-magnesium alloy spheroidizer equivalent to 0.6% of the weight of molten i...

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Abstract

The invention discloses a low-abrasion alloyed wear-resistant cast ball and a preparation method thereof. The preparation method comprises the following steps that S1, pig iron, a manganese-iron alloy, a silicon-iron alloy, a chromium-iron alloy, electrolytic nickel, red copper, a boron-iron alloy and a carburant are added into an electric furnace for heating and smelting to obtain molten iron; S2, the molten iron is taken out of a furnace, nano silicon carbide and an alloy inoculant are added along with flow to carry out flow inoculation treatment when the molten iron is taken out of the furnace, the molten iron taken out of the furnace is added into a casting ladle, and a spheroidizing agent is placed at the bottom of the casting ladle to carry out spheroidizing treatment; S3, the spheroidized molten iron is poured into a casting mold to form a cast ball; and S4, the cast ball is heated to 880-920 DEG C, heat preservation is carried out under the action of a pulsed magnetic field, then the cast ball is quenched into a salt bath to be subjected to heat preservation, and the cast ball is taken out and air-cooled to the room temperature. The preparation method has the advantages that the raw material cost is low, the technological operation is convenient, precious and rare raw materials are not contained, and the obtained cast ball has high impact toughness and high hardness and is extremely low in abrasion in practical application.

Description

technical field [0001] The invention relates to the technical field of wear-resistant casting balls, in particular to a low-wear alloyed wear-resistant casting ball and a preparation method thereof. Background technique [0002] Grinding balls, as wear-resistant castings with the largest consumption, are widely used in material grinding production in metallurgy, mining, building materials, coal, electric power and other industries. The most commonly used grinding balls in industry mainly include various steel balls, low-Cr alloy cast iron balls, nodular cast iron balls, etc. These grinding balls have high ball consumption and huge consumption, which is difficult to meet the development needs of high efficiency and low consumption. In order to improve the wear resistance of grinding balls and reduce ball consumption, the method of adding alloying elements is often used. For example, adding V and Ti can form high-hardness carbonitrides, which can improve the microhardness and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/10C22C37/10B22C9/22B02C17/20C21D5/00C21D1/04C21D9/36
Inventor 竺翠云彭宗华蒋杰
Owner ANHUI RUITAI NEW MATERIALS TECH