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Powder metallurgy gear and manufacturing method thereof

A powder metallurgy and gear technology, which is applied in the field of powder metallurgy gears and their preparation, can solve the problems that the pressure resistance and salt spray resistance need to be improved, the gear working environment is complicated, etc., achieve a good market prospect, and improve the pressure resistance and salt spray resistance. The effect of simple performance and preparation process

Inactive Publication Date: 2015-12-16
SUZHOU NETABHAPE COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gears manufactured by metallurgical technology can ensure the consistency of gear shape and dimensional tolerances, but due to the complex working environment of gears, there are higher requirements for their performance
[0004] The patent with the authorized announcement number CN102179519B discloses a powder metallurgy rotating gear, and its pressure resistance and salt spray resistance performance need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A powder metallurgy gear, which is composed of the following components in parts by mass: 12 parts of nickel powder, 1 part of copper powder, 5 parts of aluminum powder, 2 parts of zircon sand, 8 parts of zinc powder, 4 parts of aluminum oxide, iron 35 parts of boron powder, 3 parts of boron powder, and 2 parts of calcium oxalate.

[0018] Preparation:

[0019] (1) According to the above mass parts, nickel powder, copper powder, aluminum powder, zircon sand, zinc powder, aluminum oxide, iron powder, boron powder, and calcium oxalate are pulverized and mixed uniformly, and passed through a 80-mesh sieve to obtain a mixed material;

[0020] (2) The mixture obtained in step (1) adopts a powder metallurgy two-way floating pressing process, and the unit pressing pressure is 550MPa, and it is pressed and formed to obtain a blank;

[0021] (3) Sinter the blank obtained in step (2) to 1100°C, and the sintering pressure is 8Kg / cm 2 , take it out after heat preservation for 2 ...

Embodiment 2

[0023] A powder metallurgy gear, which is composed of the following components in parts by mass: 24 parts of nickel powder, 13 parts of copper powder, 15 parts of aluminum powder, 10 parts of zircon sand, 19 parts of zinc powder, 11 parts of aluminum oxide, iron 51 parts of boron powder, 10 parts of boron powder, and 16 parts of calcium oxalate.

[0024] Preparation:

[0025] (1) According to the above mass parts, nickel powder, copper powder, aluminum powder, zircon sand, zinc powder, aluminum oxide, iron powder, boron powder, and calcium oxalate are pulverized and mixed uniformly, and passed through a 150-mesh sieve to obtain a mixed material;

[0026] (2) adopting powder metallurgy two-way floating pressing technique to the mixed material obtained in step (1), the unit pressing pressure is 800MPa, and pressing molding obtains a blank;

[0027] (3) Sinter the blank obtained in step (2) to 1300°C, and the sintering pressure is 11Kg / cm 2 , take it out after 4 hours of heat ...

Embodiment 3

[0029] A powder metallurgy gear, which is composed of the following components in parts by mass: 15 parts of nickel powder, 4 parts of copper powder, 7 parts of aluminum powder, 5 parts of zircon sand, 10 parts of zinc powder, 7 parts of aluminum oxide, iron 38 parts of boron powder, 4 parts of boron powder, and 5 parts of calcium oxalate.

[0030] Preparation:

[0031] (1) According to the above mass parts, nickel powder, copper powder, aluminum powder, zircon sand, zinc powder, aluminum oxide, iron powder, boron powder, and calcium oxalate are pulverized and mixed uniformly, and passed through a 100-mesh sieve to obtain a mixed material;

[0032] (2) adopting powder metallurgy two-way floating pressing technology to the mixed material obtained in step (1), the unit pressing pressure is 600MPa, and pressing molding obtains a blank;

[0033] (3) Sinter the blank obtained in step (2) to 1150°C, and the sintering pressure is 9Kg / cm 2 , take it out after 2.5 hours of heat pres...

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Abstract

The invention discloses a powder metallurgy gear and a manufacturing method thereof. The gear is composed of the following ingredients, by mass, 12-24 parts of nickel powder, 1 part-13 parts of copper powder, 5-15 parts of aluminum powder, 2-10 parts of zircon sand, 8-19 parts of zinc powder, 4-11 parts of aluminum oxide, 35-51 parts of iron powder, 3-10 parts of boron powder and 2-16 parts of calcium oxalate. The compression resistance and the salt spray resistance are improved while the tooth portion HRC of the gear is high, the manufacturing process is simple, and the gear has the good market prospect.

Description

technical field [0001] The invention belongs to the field of powder metallurgy, and in particular relates to a powder metallurgy gear and a preparation method thereof. Background technique [0002] Powder metallurgy is a process technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to manufacture metal materials, composite materials and various types of products. [0003] Gear transmission is the most widely used mechanical transmission in modern mechanical products, because it can ensure a constant transmission ratio, and has the advantages of large transmission power range, high efficiency, and long life. Gears manufactured by metallurgical technology can ensure the consistency of gear shape and dimensional tolerances, but due to the complex working environment of gears, there are higher requirements for their performance. [0004] The patent whose authorized notification numb...

Claims

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Application Information

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IPC IPC(8): B22F3/16B22F5/08B22F1/00C22C32/00C22C30/06
Inventor 刘莉王爽邱晶刘晓东黄明明
Owner SUZHOU NETABHAPE COMPOSITE MATERIALS
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