High-hardness automotive connection rod forged through ferrum-based powder in metallurgical manner and manufacturing method thereof

A technology of iron-based powder metallurgy and automobile connecting rods, which is applied in the direction of connecting rods, metal processing equipment, mechanical equipment, etc., can solve the problems of complex pressing process, many voids, low strength, etc., and achieve good dispersion and good mold release , good surface quality

Inactive Publication Date: 2016-01-20
李学峰
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is likely because they are much more complex than conventional pressing processes under industrial and production conditions
[0005] Although various lubricants have solved certain parts densification

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

[0015] A high-hardness iron-based powder metallurgy forged automobile connecting rod, made of the following raw materials in parts by weight (kg): iron powder 93, cuprous iodide 2.7, Ni powder 2.1, Mn powder 1, nickel-plated carbon powder 0.4, boric acid Lead 0.5, zinc stearate 0.3, appropriate amount of silane coupling agent kh550, appropriate amount of nano-tungsten disulfide, appropriate amount of polyethylene glycol, and appropriate amount of deionized water.

[0016] According to the preparation method of the high-hardness iron-based powder metallurgy forging automobile connecting rod described in claim 1, comprising the following steps:

[0017] (1) To make water-atomized iron powder coolant, add polyethylene glycol at 0.3wt% to deionized water, then add 2.2wt% nano-tungsten disulfide, stir evenly, and obtain a coolant;

[0018] (2) Mix iron powder, Ni powder and Mn powder, then add 0.7wt% nano-tungsten disulfide in the mixture, send it into the furnace for melting, then...

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
Densityaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Impact energyaaaaaaaaaa
Login to view more

Abstract

The invention provides a high-hardness automotive connection rod forged through ferrum-based powder in a metallurgical manner. The high-hardness automotive connection rod is manufactured from, by weight, 93-94 parts of iron powder, 2.5-2.8 parts of cuprous iodide, 2-2.3 parts of Ni powder, 0.8-1.1 parts of Mn powder, 0.3-0.4 part of nickel-plated carbon powder, 0.5-0.6 part of boric acid lead, 0.3-0.4 part of zinc stearate, a proper amount of silane coupling agent kh 550, a proper amount of nano tungsten disulfide, a proper amount of polyethylene glycol and a proper amount of deionized water. According to the high-hardness automotive connection rod forged through ferrum-based powder metallurgy and a manufacturing method thereof, the nano-sized tungsten disulfide is used when water-atomized powder is made, the dispersity and lubricating property of the powder are good, the consumption of a lubricant is reduced, the density of a green body is increased, pores in finished products are few, the strength of alloy is improved greatly, the forging pressure and temperature are lowered, and energy is saved; and through the cuprous iodide, the Ni powder, the Mn powder, the nickel-plated carbon powder and the boric acid lead, the abrasive resistance and lubricating property of the connection rod are improved, the surface quality is good, hardness is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a high-hardness iron-based powder metallurgy forged automobile connecting rod and a preparation method thereof. Background technique [0002] In the production of powder metallurgy parts, how to achieve the highest possible density at the lowest possible production cost, how to produce powder metallurgy parts with complex shapes that are difficult to demould due to the large surface area of ​​the aspect ratio, and how to increase the strength of the green body Higher, increasing the capacity and productivity of existing presses, these are in urgent need of better lubricants. [0003] Processes such as double pressing / double sintering (DP / DS) and powder forging are well known and can achieve parts densities of 7.4 to 7.5 g cm -3 or close to full density. However, the production costs of these processes are very expensive. On the other hand, compared with the second pr...

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
IPC IPC(8): B22F1/00C22C38/60F16C7/00B21J5/00
Inventor 李学峰马聪
Owner 李学峰
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