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Fuel pump inner and outer rotor assembly and production method thereof

A production method and oil pump technology, applied to pumps, mechanical equipment, machines/engines, etc., can solve problems such as poor suction and heat dissipation performance, unfavorable resource conservation, and increased production costs, so as to protect normal work and save Precious resources, the effect of prolonging the service life

Inactive Publication Date: 2013-07-10
SICHUAN PROVINCE NANBU JIALING POWDER METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above formula has the following defects: first, in high-load operation, the suction and heat dissipation performance is not good, resulting in fast wear and insufficient oil supply; second, the use of 1-5% copper and other rare metals in the formula is expensive
It is not conducive to resource saving, but also increases the production cost; the third is the phenomenon of falling off when fixing the shaft, breaking the machine and even causing the tragic situation of personnel injury and disability

Method used

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  • Fuel pump inner and outer rotor assembly and production method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] Example 1, such as figure 1 As shown, the present invention is composed of inner and outer rotors, shafts and fixed shafts, and is characterized in that the inner and outer rotor bodies are prepared from the following components; the iron content is more than 98%, the particle size is 80-100 mesh iron powder, and the content is 98-99 %, graphite powder with particle size of 320 mesh, phosphorus content of 17-21%, iron phosphorus powder with particle size of 80-100 mesh, content of 98-99.5%, sulfur powder with particle size of 80-100 mesh, content of 98-99% hard Zinc fatty acid, lubricating oil.

[0018] The two ends of the fixed shaft of the present invention are provided with a safety step device 2 which is fitted and connected with the shaft 1 in a row.

[0019] The production method is as follows:

[0020] 1. Crush ferrophosphorus into 80-100 mesh powder for later use;

[0021] 2. Detect the iron content, phosphorus content, and sulfur content of the iron powder, ...

Embodiment 2

[0022] Embodiment 2, prepare materials according to the following components and weight ratio, iron powder with a particle size of 80-100 mesh, content of 98-99%, graphite powder with a particle size of 320 mesh, phosphorus content of 17-21%, and a particle size of 80-100 mesh phosphorus Iron powder, content 98-99.5%, sulfur powder, content 98-99%, zinc stearate, lubricating oil.

[0023] The specific production method is as follows:

[0024] 1. Ferrophosphorus is crushed into 80-100 mesh granules for later use:

[0025] 2. Detect the iron content, phosphorus content, and sulfur content of the iron powder, and determine the exact dosage of other components according to the test data, and accurately weigh them. In this embodiment, iron powder is used to detect that the iron content is 98%, the phosphorus content is 0.3%, the sulfur content is 0.01%, and the particle size is 80-100 mesh. 95 kg of iron powder, the content is 98%, and the particle size is 320 mesh. 1.2 kg of gra...

Embodiment 3

[0026] Embodiment 3, prepare materials according to the following components and weight ratio: Iron powder with an iron content of more than 98%, a particle size of 80-100 mesh, a content of 98-99%, a particle size of 320 mesh graphite powder, and a phosphorus content of 17-21% , Iron phosphorus powder with particle size of 80-100 mesh, content of 98-99.5%, sulfur powder with particle size of 80-100 mesh, content of 98-99% zinc stearate, lubricating oil.

[0027] The specific production method is as follows:

[0028] l. Ferrophosphorus is crushed into 80-100 mesh powder for later use;

[0029] 2. Detect the iron content, phosphorus content and sulfur content of the iron powder, and determine the exact dosage of other components according to the test data, and weigh them accurately. The present embodiment selects 97.5 kilograms of iron powders with an iron content of 98%, a phosphorus content of 0.4%, a sulfur content of 0.01%, a particle size of 80-100 mesh, and 1.5 kilograms...

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Abstract

The invention discloses a fuel pump inner and outer rotor assembly and a production method thereof. The fuel pump inner and outer rotor assembly comprises an inner and outer rotor, a shaft and a fixed stud, and is characterized in that the inner and outer rotor body is prepared by comprising the following components according to the weight ratio: Fe: C: P: sulphur: zinc stearate: lubricant is equal to (94.3-98): (1-1.5): (0.5-1.1): (0.4-1.1): (0.6-0.8): (0.01-0.03). Through tests, after being subjected to bench test and installing for use, the technological indexes of the fuel pump inner and outer rotor assembly can achieve the standards of imported components, the density is greater than 6.5MP2, the apparent hardness is HB80-130, and the warp-wise conquassation strength is greater than 410MP2. Copper with higher cost is omitted, the precious resource can be saved, and the production cost can be lowered by 20.4%; and the wear resistance property of products can be improved, the strength and hardness of the products are proper, the thermal absorption and radiation properties are good, the sufficient oil supply can be ensured, and the service life of the product can be prolonged.

Description

technical field [0001] The invention relates to the technical field of manufacturing an internal combustion engine oil pump, in particular to an internal and external rotor assembly of an internal combustion engine oil pump and a production method thereof. Background technique [0002] As we all know, the inner and outer rotor assembly of CP95 and CP110 internal combustion engine oil pump is composed of outer rotor, inner rotor, shaft and fixed shaft. It is a key component of power machinery. Due to its harsh working environment and high technical requirements. In the past, the formulations of products produced in my country and imported from abroad were roughly the same. The product material formulations were mostly iron 95%, carbon 0.2-1.0%, copper 1-5%, and others < 3%. For example, Chinese patent 200410093583.3 discloses a machine The powder metallurgy manufacturing method of the inner and outer rotors of the oil pump, the raw material formula of the parts is: nickel 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/00B22F3/16F04C2/10
Inventor 王友德
Owner SICHUAN PROVINCE NANBU JIALING POWDER METALLURGY
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