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Preparation method of wear-resistant and heat-resistant low alloy steel

A low-alloy steel, heat-resistant technology, applied in the field of low-alloy steel processing, can solve the problems of low-alloy steel wear resistance, increased maintenance costs, frequent replacement, etc., to achieve improved surface hardness, stable product quality, and good wear resistance Effect

Inactive Publication Date: 2018-05-22
马鞍山市鑫龙特钢有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The metal supporting parts of automobiles not only have high requirements on structural strength and function, but also are equally important in mechanical processing. Such requirements not only meet the basic conditions for automobile use, but also guarantee the safety and reliability of prolonging the service life. Now In the existing technology, the steel used for the production of auto parts is ordinary low-to-medium content alloy steel. Because these auto metal parts are generally frequent moving parts in terms of function, the wear rate is high, and the replacement is frequent, which increases the maintenance cost. Therefore, how to It is very important to improve the wear resistance of low alloy steel. At the same time, the heat resistance of its surface will affect the wear resistance of low alloy steel during use. Therefore, it is necessary to study the above defects of low alloy steel

Method used

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Examples

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Effect test

Embodiment 1

[0012] A method for preparing wear-resistant and heat-resistant low-alloy steel. The nickel-copper-cobalt ternary alloy is electroplated on the surface of the low-alloy steel workpiece. The thickness of the nickel-copper-cobalt ternary alloy layer is 40 μm, and then the above-mentioned treated workpiece is buried in a protective material Then put it into a sealable heating furnace, keep it at 500°C for 5 hours in an argon atmosphere, and then raise the temperature to 800°C for 1.5 hours;

[0013] Wherein, the protective material includes the following raw materials in parts by weight: 10 parts of silicon dioxide, 4 parts of magnesium phosphate, 4 parts of zinc oxide, 3 parts of nano titanium dioxide, and 7 parts of sulfurized fatty acid ester.

[0014] Among them, low alloy steel composition weight percentage: carbon 0.27%, silicon 0.3%, manganese 0.66%, phosphorus 0.002%, sulfur 0.005%, aluminum 0.038%, chromium 0.24%, nickel 0.024%, molybdenum 0.02%, cobalt 0.024%, boron 0.0...

Embodiment 2

[0019] A method for preparing wear-resistant and heat-resistant low-alloy steel. The nickel-copper-cobalt ternary alloy is electroplated on the surface of the low-alloy steel workpiece. The thickness of the nickel-copper-cobalt ternary alloy layer is 35 μm, and then the above-mentioned processed workpiece is buried in a protective material Then put it into a sealable heating furnace, keep it at 550°C for 4 hours in an argon atmosphere, and then raise the temperature to 850°C for 1 hour;

[0020] Wherein, the protective material includes the following raw materials in parts by weight: 12 parts of silicon dioxide, 3 parts of magnesium phosphate, 2 parts of zinc oxide, 5 parts of nano titanium dioxide, and 6 parts of sulfurized fatty acid ester.

[0021] Among them, low-alloy steel composition weight percentage: carbon 0.25%, silicon 0.32%, manganese 0.65%, phosphorus 0.003%, sulfur 0.006%, aluminum 0.036%, chromium 0.26%, nickel 0.015%, molybdenum 0.018%, cobalt 0.022%, boron 0....

Embodiment 3

[0026] A method for preparing wear-resistant and heat-resistant low-alloy steel. The nickel-cobalt ternary alloy is electroplated on the surface of the low-alloy steel workpiece. The thickness of the nickel-copper-cobalt ternary alloy layer is 45 μm, and then the above-mentioned processed workpiece is buried in a protective material Then put it into a sealable heating furnace, keep it at 450°C for 6 hours in an argon atmosphere, and then raise the temperature to 750°C for 2 hours;

[0027] Wherein, the protective material includes the following raw materials in parts by weight: 8 parts of silicon dioxide, 5 parts of magnesium phosphate, 6 parts of zinc oxide, 1 part of nano titanium dioxide, and 8 parts of sulfurized fatty acid ester.

[0028] Among them, low-alloy steel composition weight percentage: carbon 0.28%, silicon 0.28%, manganese 0.68%, phosphorus 0.001%, sulfur 0.003%, aluminum 0.042%, chromium 0.22%, nickel 0.037%, molybdenum 0.024%, cobalt 0.025%, boron 0.013%, va...

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Abstract

The invention belongs to the technical field of low alloy steel processing, and particularly relates to a preparation method of wear-resistant and heat-resistant low alloy steel. Nickel copper cobaltternary alloy is electroplated on the surface of a low alloy steel workpiece, the thickness of the nickel copper cobalt ternary alloy is 35-45[mu]m, the processed workpiece is buried in a protective material, and then the workpiece is put into a sealed heating furnace. In argon atmosphere, the workpiece is kept warm for 4-6 hours at a temperature of 450-550 DEG C and then heated to 750-850 DEG C for 1-2 hours. Compared with the prior art, the preparation method of the wear-resistant and heat-resistant low alloy steel has the advantages that the processing method is controllable; the product quality is stable; the wear resistance of the workpiece keeps better under high temperature; the surface hardness of the workpiece is greatly improved; and the application range of the low alloy steel is expanded.

Description

technical field [0001] The invention belongs to the technical field of low-alloy steel processing, and in particular relates to a preparation method of wear-resistant and heat-resistant low-alloy steel. Background technique [0002] The metal supporting parts of automobiles not only have high requirements on structural strength and function, but also are equally important in mechanical processing. Such requirements not only meet the basic conditions for automobile use, but also guarantee the safety and reliability of prolonging the service life. Now In the existing technology, the steel used for the production of auto parts is ordinary low-to-medium content alloy steel. Because these auto metal parts are generally frequent moving parts in terms of function, the wear rate is high, and the replacement is frequent, which increases the maintenance cost. Therefore, how to It is very important to improve the wear resistance of low alloy steel. At the same time, the heat resistance...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25D5/50C21D1/74C21D6/00C22C38/04C22C38/06C22C38/44C22C38/52C22C38/54C22C38/48C22C38/46C22C38/50
Inventor 高欣王军
Owner 马鞍山市鑫龙特钢有限公司
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