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Powder-metallurgy automobile booster pump stator and manufacturing method thereof

A technology of powder metallurgy and pump stator, applied in the field of powder metallurgy, can solve the problems of insufficient wear resistance, difficult processing, low density, etc., achieve increased wear resistance and lubricity, excellent tensile strength performance, and solve Complex Shape Effects

Inactive Publication Date: 2014-01-29
WUHU HONGKUN AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the shape of the booster pump stator is complex, its processing is difficult, complicated and costly
It is produced by powder metallurgy process, but it is suspended because of low density (less than 6.8), low hardness (less than HRC30) and strength, wear resistance, etc. cannot meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] specific implementation plan

[0016] The present invention will be described in detail below through specific examples.

[0017] A powder metallurgy automobile booster pump stator, made of the following raw materials in parts by weight (kg): molybdenum powder 12, copper powder 1, graphite powder 1, zinc stearate 2, molybdenum disulfide 1, Zn 3.1, iron powder 81 , Mn 6.6, Ni 7.4, Cr 4.2, additive 2;

[0018] The auxiliary agent is made of the following raw materials in parts by weight (kg): iron powder 30, bamboo charcoal 3, citric acid 2, nano-titanium dioxide 1, silane coupling agent KH550 1, ferric oxide 3, potassium dihydrogen phosphate 1 , zinc stearate 2, N220 carbon black 1, methyltrimethoxysilane 1; the preparation method is to mix iron powder, bamboo charcoal, ferric oxide, potassium dihydrogen phosphate, and N220 carbon black, and grind them into 200-300 mesh powder, then add methyltrimethoxysilane and mix evenly, press it into a billet at 10-15Mpa, then sen...

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Abstract

The invention discloses a powder-metallurgy automobile booster pump stator. The powder-metallurgy automobile booster pump stator is characterized by being composed of, by weight, 12-13 parts of molybdenum powder, 1-2 parts of copper powder, 1-2 parts of graphite powder, 2-3 parts of zinc stearate, 1-2 parts of molybdenum disulfide, 3.1-3.4 parts of zinc, 81-82 parts of iron powder, 6.6-7.2 parts of manganese, 7.4-7.8 parts of nickel, 4.2-4.3 parts of chromium and 2-3 parts of auxiliary agents. Graphite is added to raw materials of the powder-metallurgy automobile booster pump stator, so that abrasion resistance and lubricity of the powder-metallurgy automobile booster pump stator are enhanced; besides, the structure is compact, the microstructure is good, very few holes are formed, and structural rigidity, hardness, fatigue resistance and tensile strength are excellent; in addition, the problem that the shape of the automobile booster pump stator is complex is solved.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a powder metallurgy automobile booster pump stator and a preparation method thereof. Background technique [0002] Powder metallurgy is an industrial 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 produce metal materials, composite materials and various types of products. At present, powder metallurgy technology has been widely used in transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industries, and has become one of the most dynamic branches of new material science. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability, and is very suitable for mass production. In addition, some materials and complex ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/16B22F5/00C22C38/58
Inventor 黄浩
Owner WUHU HONGKUN AUTO PARTS
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