Powder metallurgy engine oil delivery pump rotor and manufacturing method thereof

A powder metallurgy and engine technology, applied in the field of powder metallurgy, can solve the problems of poor product consistency, poor lubricity, and high production costs, and achieve the effects of improving product quality and economic benefits, excellent tensile strength performance, and improving surface hardness

Inactive Publication Date: 2014-01-29
WUHU HONGKUN AUTO PARTS
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The powder metallurgy rotor for the diesel engine fuel pump is one of the key parts in the diesel engine. Its function is to suck the diesel out of the fuel tank and spray it into the combustion chamber through high-speed rotation. The plug type is the main type, but since 2008, the country has upgraded the automobile exhaust emission standard, and the engine of the Euro 2 emission standard is facing elimination. Metallurgical forging, made by quenching process, but after quenching, the deformation of parts is not easy to control, the interchangeability is poor, and the production cost is also high
However, due to the poor lubricity and low viscosity of diesel oil, the diesel oil delivery pump must have a high speed and a small meshing gap to suck out the diesel oil, and high speed, poor lubricity, and small clearance require the rotor to have a high speed. Hardness and wear resistance, currently only through heat treatment and quenching to meet these requirements, low production efficiency, poor product consistency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] specific implementation plan

[0017] The present invention will be described in detail below through specific examples.

[0018] A powder metallurgy engine oil delivery pump rotor, made of the following raw materials in parts by weight (kg): 0.2 sulfur powder, 9 zinc powder, 3 molybdenum powder, 2 copper powder, Ni13.5, Cr24, Mo3, iron powder 48, auxiliary Agent 2;

[0019] 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 send it to 920-950°C for calcination ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a powder metallurgy engine oil delivery pump rotor. The powder metallurgy engine oil delivery pump rotor is characterized by being manufactured from, by weight, 0.2-0.3 part of powdered sulphur, 9-10 parts of zinc powder, 3-4 parts of molybdenum powder, 2-3 parts of copper powder, 13.5-14.5 parts of Ni, 24-25 parts of Cr, 3-4 parts of Mo, 48-51 parts of iron powder and 2-3 parts of auxiliaries. According to the powder metallurgy engine oil delivery pump rotor, the hardness of the surface of the rotor is effectively improved, a friction coefficient is lowered, abrasion resistance of the rotor is substantially improved, the rotor is excellent in structural rigidity, hardness, fatigue resistance and tensile strength performance, production cost is lowered, and quality of the product and economical benefits can be improved.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a powder metallurgy engine fuel delivery pump rotor and a preparation method thereof. Background technique [0002] The powder metallurgy rotor for the diesel engine fuel pump is one of the key parts in the diesel engine. Its function is to suck the diesel out of the fuel tank and spray it into the combustion chamber through high-speed rotation. The plug type is the main type, but since 2008, the country has upgraded the automobile exhaust emission standard, and the engine of the Euro 2 emission standard is facing elimination. It is made by metallurgical forging and quenching process, but after quenching, the deformation of parts is not easy to control, the interchangeability is very poor, and the production cost is also high. However, due to the poor lubricity and low viscosity of diesel oil, the diesel oil delivery pump must have a high speed and a small meshing gap to suck ou...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/16
Inventor 黄浩
Owner WUHU HONGKUN AUTO PARTS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap