Corrosion-resistant precision gear and preparation method thereof

A corrosion-resistant, gear technology, applied in the direction of belts/chains/gears, mechanical equipment, components with teeth, etc., can solve the problems of shortened life of corrosion-resistant precision gears, performance degradation of gear strength, etc., to reduce the number of steps in the preparation process , material adhesion is small, and the effect of shape accuracy is superior

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 service life of corrosion-resistant precision gears will be shortened, so the performance of corrosion-resistant precision gears such as strength, durability, tensile resistance, hardness and surface smoothness can affect the service life of corrosion-resistant 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 The degree of corrosion resistance of precision gears is a research direction required by society

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The invention provides a corrosion-resistant precision gear, which is composed of a gear with a modulus of 0.2 or less, and the gear with a modulus of 0.2 or less is formed of a chromium oxide composite silicon carbide ceramic metal structure with a volume ratio of 70% or more, and the chromium oxide composite The silicon carbide ceramic metal structure is composed of any one or two or more elements of Si, C, O, Fe, Al, Cr, 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 corrosion-resistant 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 Cr, 5 parts Parts of Zn are melted and blended to prepare a chromium oxide composite silicon carbide ceramic metal structure. Add chromium oxide composite ...

Embodiment 2

[0027] The invention provides a corrosion-resistant precision gear, which is composed of a gear with a modulus of 0.2 or less, and the gear with a modulus of 0.2 or less is formed of a chromium oxide composite silicon carbide ceramic metal structure with a volume ratio of 70% or more, and the chromium oxide composite The silicon carbide ceramic metal structure is composed of any one or two or more elements of Si, C, O, Fe, Al, Cr, 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 corrosion-resistant precision gears, comprising the following steps: (1) parts preparation: 35 parts of Si, 40 parts of C, 10 parts of O, 25 parts of Fe, 10 parts of Al, 10 parts of Cr, 10 parts of Parts of Zn are melted and blended to prepare a chromium oxide composite silicon carbide ceramic metal structure. Add chromium oxide compos...

Embodiment 3

[0036] The invention provides a corrosion-resistant precision gear, which is composed of a gear with a modulus of 0.2 or less, and the gear with a modulus of 0.2 or less is formed of a chromium oxide composite silicon carbide ceramic metal structure with a volume ratio of 70% or more, and the chromium oxide composite The silicon carbide ceramic metal structure is composed of any one or two or more elements of Si, C, O, Fe, Al, Cr, 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 corrosion-resistant precision gears, comprising 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 Cr, 8 parts Parts of Zn are melted and blended to prepare a chromium oxide composite silicon carbide ceramic metal structure. Add chromium oxide composite sili...

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PUM

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Abstract

The invention relates to a corrosion-resistant precision gear and a preparation method thereof, and belongs to the technical field of rail machinery. The corrosion-resistant precision gear comprises agear having a modulus of 0.2 or below, the gear having the modulus of 0.2 or below is formed by a chromium oxide composite silicon carbide ceramic metal structure with a volume ratio of 70% or above,the chromium oxide composite silicon carbide ceramic metal structure is composed of any one or more than two elements of Si, C, O, Fe, Al, Cr and Zn, the preparation method comprises the following steps of (1) parts preparing; (2) pre-cleaning; (3) part clamping; (4) charging; (5) vacuum glow ion nitriding; and (6) furnace cooling. According to the corrosion-resistant precision gear and the preparation method thereof, the preparation method is simple, the prepared corrosion-resistant precision gear is high in strength, the preparation process is simple, the production cost is low, and an adopted raw material is non-toxic, harmless, environmentally friendly and free of pollution.

Description

technical field [0001] The invention relates to a corrosion-resistant 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 service life of corrosion-resistant precision gears will be shortened, so the performance of corrosion-resistant precision gears such as strength, durability, tensile resistance, hardness and surface smoothness can affect the service life of corrosion-resistant precision gears, especially When severe wear occurs in long-term use, the strength and other properties of the gear will decline to...

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
CPCC22C1/1036C22C29/005C22C29/02C22C29/12C22C30/06C23C8/36F16H55/06F16H55/17
Inventor 许向阳陈涛
Owner HUBEI WEINENGDA TRANSMISSION CO LTD
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