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High-hardness and low-carbon medium-cadmium wear-resisting steel ball and preparation method thereof

A high-hardness, wear-resistant steel technology, applied in the field of wear-resistant steel balls, can solve the problems that the hardness and impact toughness of wear-resistant steel balls cannot meet the actual needs, and achieve reasonable hardness and toughness, simple heat treatment process, and reasonable matching Effect

Inactive Publication Date: 2017-06-13
WUHU BEISI SCI & TECH PARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The hardness and impact toughness of wear-resistant steel balls in the prior art cannot meet the actual needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of high hardness and low carbon medium cadmium wear-resistant steel ball proposed by the present invention has the weight percentages of its components as follows: C: 2.35%, Si: 2.15%, Mn: 0.7%, Cr: 4.5%, Cu: 0.9% , Mo: 0.2%, Re: 0.2%, S: 0.01%, P: 0.01%, and the balance is Fe and unavoidable impurities.

Embodiment 2

[0027] A method for preparing a high-hardness, low-carbon medium cadmium wear-resistant steel ball of the present invention comprises the following steps:

[0028] S1. Smelting: Put pig iron, scrap steel, ferrochrome, ferromolybdenum, ferromanganese, electrolytic copper and ferrosilicon into the smelting furnace in turn for smelting. Before the furnace is released, the aluminum is inserted into the furnace for deoxidation, and the rare earth is treated in the bag. The temperature of the furnace is 1500 ℃ , to obtain the alloy liquid, and then to detect, the alloy liquid includes the following components by weight percentage: C: 1.9%, Si: 2.9%, Mn: 0.6%, Cr: 5.4%, Cu: 0.6%, Mo: 0.3%, Re : 0.1%, S: 0.03%, P: 0.02%, the balance is Fe and unavoidable impurities;

[0029] S2. Casting: The alloy liquid obtained in S2 is poured, the scale ratio of the wooden mold is 1%, the water glass quartz sand is used for modeling, carbon dioxide is blown dry, the pouring temperature is 1500°C, a...

Embodiment 3

[0032] A method for preparing a high-hardness, low-carbon medium cadmium wear-resistant steel ball of the present invention comprises the following steps:

[0033] S1. Smelting: Put pig iron, scrap steel, ferrochrome, ferromolybdenum, ferromanganese, electrolytic copper and ferrosilicon into the smelting furnace for smelting in sequence. Before the furnace is released, the aluminum is inserted in the furnace for deoxidation, and the rare earth is treated in the bag. The temperature of the furnace is 1600 ℃. , to obtain the alloy liquid, and then to detect, the alloy liquid includes the following components by weight percentage: C: 2.8%, Si: 1.4%, Mn: 0.8%, Cr: 3.6%, Cu: 1.2%, Mo: 0.1%, Re : 0.3%, S: 0.02%, P: 0.02%, the balance is Fe and unavoidable impurities;

[0034] S2. Casting: The alloy liquid obtained in S2 is poured, the scale ratio of the wood mold is 3%, the water glass quartz sand is used for modeling, carbon dioxide is blown dry, and the pouring temperature is 1400...

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Abstract

The invention discloses a high-hardness and low-carbon medium-cadmium wear-resisting steel ball. The high-hardness and low-carbon medium-cadmium wear-resisting steel ball comprises the following components in percentage by weight: 1.9-2.8% of C, 1.4-2.9% of Si, 0.6-0.8% of Mn, 3.6-5.4% of Cr, 0.6-1.2% of Cu, 0.1-0.3% of Mo, 0.1-0.3% of Re, less than 0.04% of S, less than 0.04% of P, and the balance Fe and inevitable impurities. The invention also discloses a preparation method of the high-hardness and low-carbon medium-cadmium wear-resisting steel ball. The low-cadmium wear-resisting steel ball is high in hardness and high in impact toughness.

Description

technical field [0001] The invention relates to the technical field of wear-resistant steel balls, in particular to a high-hardness, low-carbon medium-cadmium wear-resistant steel ball and a preparation method thereof. Background technique [0002] In thermal power plants, the use of steel ball coal mills is very common, but the wear of liners and steel balls is always a prominent problem. Since it is difficult to replace the liner, it is particularly important to increase the life of the liner to improve the economic benefits of thermal power plants. There are many factors affecting the service life of the liner, among which the material is the most important factor affecting the service life of the liner. [0003] Neither the hardness nor the impact toughness of the wear-resistant steel balls in the prior art can meet the actual needs. Contents of the invention [0004] In order to solve the technical problems existing in the background technology, the present inventio...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C37/06C22C38/36C22C38/34C22C38/02C22C38/04C22C38/20C22C38/22C22C33/08C22C33/06C21D5/00C21D6/00
CPCC22C37/10C21D5/00C21D6/002C21D6/005C21D6/008C22C33/06C22C33/08C22C37/06C22C38/005C22C38/02C22C38/04C22C38/20C22C38/22C22C38/34C22C38/36
Inventor 张宏标张倍思
Owner WUHU BEISI SCI & TECH PARK
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