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Production method of powder metallurgy gear

A powder metallurgy and gear technology, applied in the field of powder metallurgy gear preparation, can solve problems such as complex process, poor strength, rough gear surface, etc., and achieve the effect of comprehensive process flow, good gear quality and high gear strength

Inactive Publication Date: 2016-09-21
ANHUI AOTAI POWDER METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Powder metallurgy is the process of producing metal or using metal powder (or a mixture of metal powder and non-metal powder) as a raw material, after forming and sintering, to manufacture metal materials, composite materials and various types of products, powder metallurgy and the production of ceramics There are similarities, therefore, a series of powder metallurgy new technologies can also be used in the preparation of ceramic materials, due to the advantages of powder metallurgy technology, it has become the key to solve the problems of new materials, and plays a pivotal role in the development of new materials, The existing powder metallurgy gear adopts the traditional preparation process, which has the problems of complex process, and the surface of the produced gear is too rough and the strength is poor

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  • Production method of powder metallurgy gear

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Effect test

Embodiment 1

[0019] A preparation method of a powder metallurgy gear, the preparation steps of the powder metallurgy gear are as follows:

[0020] a: Raw material selection, the raw material composition and ratio of the gear are: 3 parts of nickel, 1 part of copper, 0.5 parts of molybdenum, 0.4 parts of cobalt, 1.5 parts of chromium, 0.4 parts of graphite, 0.8 parts of lubricant, and 120 parts of iron powder;

[0021] b: Filtration and stirring, the raw metal powder is mixed according to the proportion, the mixed metal powder is filtered through a filter, and then the filtered metal powder is added to the stirring device, and the lubricant is added in proportion to stir evenly;

[0022] c: Blank pressing, pour evenly stirred metal powder directly into the gear compacting mold, and press the press to make the shape of the gear blank, and the pressure of the press is 200Mpa;

[0023] d: High-temperature sintering, the gear blank is sent to the heating furnace through the mesh belt conveyor f...

Embodiment 2

[0031] A preparation method of a powder metallurgy gear, the preparation steps of the powder metallurgy gear are as follows:

[0032] a: Raw material selection, the raw material composition and ratio of the gear are: 4 parts of nickel, 1.5 parts of copper, 1.8 parts of molybdenum, 0.5 parts of cobalt, 1 part of chromium, 0.3 parts of graphite, 0.6 parts of lubricant, and 140 parts of iron powder;

[0033] b: Filtration and stirring, the raw metal powder is mixed according to the proportion, the mixed metal powder is filtered through a filter, and then the filtered metal powder is added to the stirring device, and the lubricant is added in proportion to stir evenly;

[0034] c: Blank pressing, pour evenly stirred metal powder directly into the gear compacting mold, and press the press to make the shape of the gear blank, and the pressure of the press is 250Mpa;

[0035] d: High temperature sintering, the gear blank is sent to the heating furnace through the mesh belt conveyor f...

Embodiment 3

[0043] A preparation method of a powder metallurgy gear, the preparation steps of the powder metallurgy gear are as follows:

[0044] a: Raw material selection, the raw material composition and ratio of the gear are: 4 parts of nickel, 2.5 parts of copper, 0.8 parts of molybdenum, 0.5 parts of cobalt, 1 part of chromium, 0.2 parts of graphite, 0.8 parts of lubricant, and 150 parts of iron powder;

[0045] b: Filtration and stirring, the raw metal powder is mixed according to the proportion, the mixed metal powder is filtered through a filter, and then the filtered metal powder is added to the stirring device, and the lubricant is added in proportion to stir evenly;

[0046] c: Blank pressing, pour evenly stirred metal powder directly into the gear compacting mold, and press the press to make the shape of the gear blank, and the pressure of the press is 250Mpa;

[0047] d: High temperature sintering, the gear blank is sent to the heating furnace through the mesh belt conveyor f...

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Abstract

The invention discloses a production method of a powder metallurgy gear. The production method of the powder metallurgy gear comprises the following steps of selecting raw materials, filtering and stirring, pressing workblanks, sintering at high temperature, immersing oil and cooling, shaping, performing vibration milling, carrying out rust-proof treatment, warehousing and storing. The gear produced by the invention is high in strength, and not liable to generate cracks, the technological process is comprehensive, and the produced gear is good in quality and has favorable appearance through adopting a vibration milling process eventually.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy technology, in particular to a method for preparing a powder metallurgy gear. Background technique [0002] Powder metallurgy is the process of producing metal or using metal powder (or a mixture of metal powder and non-metal powder) as a raw material, after forming and sintering, to manufacture metal materials, composite materials and various types of products, powder metallurgy and the production of ceramics There are similarities, therefore, a series of powder metallurgy new technologies can also be used in the preparation of ceramic materials, due to the advantages of powder metallurgy technology, it has become the key to solve the problems of new materials, and plays a pivotal role in the development of new materials, The existing powder metallurgy gear adopts the traditional preparation process, which has the problems of complex process, and the surface of the produced gear is too ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/08C22C38/16C22C38/12C22C38/10C22C38/18C22C33/02B22F5/08B22F3/16B22F3/24C21D1/18C21D9/32
CPCC22C38/105B22F3/164B22F3/24B22F5/08B22F2003/166B22F2003/247B22F2998/10C21D1/18C21D9/32C22C33/02C22C38/12C22C38/16C22C38/18B22F2003/248
Inventor 陈田非
Owner ANHUI AOTAI POWDER METALLURGY
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