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High-hardness precise gear and preparing method thereof

A high-hardness, gear technology, used in belts/chains/gears, mechanical equipment, components with teeth, etc., can solve the problems of shortened life, gear strength and other performance degradation, and achieve extended service life and low material adhesion. , the effect of superior shape accuracy

Inactive Publication Date: 2020-05-08
HUBEI WEINENGDA TRANSMISSION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After a long time of use, the life of high-hardness precision gears will be shortened, so the performance of high-hardness precision gears such as strength, durability, tensile resistance, hardness and surface smoothness can affect the service life of high-hardness precision gears, especially When severe wear occurs in long-term use, the strength and other properties of the gear will decline to a certain extent. Therefore, how to obtain high strength, high durability, high tensile strength, high hardness and high surface smoothness during preparation Degree of high hardness precision gear is the research direction required by the society

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The invention provides a high-hardness precision gear, which is composed of a gear with a modulus of 0.2 or less, the gear with a modulus of 0.2 or less is formed of a zirconia composite silicon carbide ceramic metal structure with a volume ratio of 70% or more, and the zirconia composite The silicon carbide ceramic metal structure is composed of any one or two or more elements of Si, C, O, Fe, Al, Zr, and Zn.

[0019] As a further improvement of the present invention, it is formed at a cooling rate of not less than 300°C / s and not more than 107°C / s.

[0020] The present invention also provides a method for manufacturing high-hardness precision gears, which includes the following steps: (1) Part preparation: 20 parts of Si, 30 parts of C, 5 parts of O, 20 parts of Fe, 5 parts of Al, 5 parts of Zr, 5 parts of Parts of Zn are melt blended to prepare zirconia composite silicon carbide ceramic metal structure, add zirconia composite silicon carbide ceramic metal structure t...

Embodiment 2

[0027] The invention provides a high-hardness precision gear, which is composed of a gear with a modulus of 0.2 or less, the gear with a modulus of 0.2 or less is formed of a zirconia composite silicon carbide ceramic metal structure with a volume ratio of 70% or more, and the zirconia composite The silicon carbide ceramic metal structure is composed of any one or two or more elements of Si, C, O, Fe, Al, Zr, and Zn.

[0028] As a further improvement of the present invention, it is formed at a cooling rate of not less than 300°C / s and not more than 107°C / s.

[0029] The present invention also provides a method for manufacturing high-hardness precision gears, comprising the following steps: (1) Part preparation: 35 parts of Si, 40 parts of C, 10 parts of O, 25 parts of Fe, 10 parts of Al, 10 parts of Zr, 10 parts Parts of Zn are melt blended to prepare zirconia composite silicon carbide ceramic metal structure, add zirconia composite silicon carbide ceramic metal structure to 4...

Embodiment 3

[0036] The invention provides a high-hardness precision gear, which is composed of a gear with a modulus of 0.2 or less, the gear with a modulus of 0.2 or less is formed of a zirconia composite silicon carbide ceramic metal structure with a volume ratio of 70% or more, and the zirconia composite The silicon carbide ceramic metal structure is composed of any one or two or more elements of Si, C, O, Fe, Al, Zr, and Zn.

[0037] As a further improvement of the present invention, it is formed at a cooling rate of not less than 300°C / s and not more than 107°C / s.

[0038] The present invention also provides a method for manufacturing high-hardness precision gears, which includes the following steps: (1) Part preparation: 30 parts of Si, 35 parts of C, 8 parts of O, 25 parts of Fe, 8 parts of Al, 8 parts of Zr, 8 parts Parts of Zn are melt blended to prepare zirconia composite silicon carbide ceramic metal structure, add zirconia composite silicon carbide ceramic metal structure to 4...

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PUM

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Abstract

The invention relates to a high-hardness precise gear and a preparing method thereof, and belongs to the technical field of track machines. The high-hardness precise gear is composed of a gear with the modulus of 0.2 or below. The gear with the modulus of 0.2 or below is formed with a zirconium oxide compound silicon carbide ceramic metal structure with the volume ratio of 70% or above. The zirconium oxide compound silicon carbide ceramic metal structure comprises one arbitrary of or two or more of Si, C, O, Fe, Al, Zr and Zn. The preparing method of the gear includes the steps of firstly, preparing parts; secondly, performing pre-cleaning; thirdly, assembling and clamping the parts; fourthly, putting the parts into a furnace; fifthly, performing vacuum glow ion nitriding; and sixthly, performing furnace cooling. According to the high-hardness precise gear and the preparing method thereof, the preparing method is simple, the prepared high-hardness precise gear is high in strength, easyto prepare and low in production cost, and the adopted raw materials are free of toxin and harm, friendly to the environment and free of pollution.

Description

technical field [0001] The invention relates to a high-hardness precision gear and a preparation method thereof, belonging to the technical field of track machinery. Background technique [0002] In the prior art, gear transmission is usually achieved by gears arranged on different shafts meshing with each other. The gear directly connected to the output shaft of the motor is usually called the driving wheel, and the gear meshing with the driving wheel is called the driven wheel. The driven wheel shaft The drive shaft of the center is the driven shaft. After a long time of use, the life of high-hardness precision gears will be shortened, so the performance of high-hardness precision gears such as strength, durability, tensile resistance, hardness and surface smoothness can affect the service life of high-hardness precision gears, especially When severe wear occurs in long-term use, the strength and other properties of the gear will decline to a certain extent. Therefore, ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/02C22C29/12C22C30/06C22C1/10C23C8/36F16H55/06F16H55/17
CPCC22C29/02C22C29/12C22C29/005C22C30/06C22C1/1036C23C8/36F16H55/06F16H55/17C22C1/1052
Inventor 陈涛许向阳
Owner HUBEI WEINENGDA TRANSMISSION CO LTD
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