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Guider of automobile shock absorber and manufacturing method thereof

A technology of automobile shock absorbers and guides, which is applied in the field of material processing, can solve problems such as insufficient strength and hardness, low dimensional accuracy, and insufficient strength, and achieve the effects of improving use efficiency and service life, excellent mechanical properties, and low cost

Inactive Publication Date: 2016-04-13
NINGBO QUNXING POWDER METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing shock absorber guide is damaged due to its insufficient strength and hardness during the working process, which affects the normal operation of the shock absorber
The traditional shock absorber guide adopts the casting method, the dimensional accuracy is relatively low, and the subsequent processing technology is complicated. It needs high-precision machine tools to make it. The production efficiency is relatively low. Manual molds are used for finishing, and the finishing accuracy is not good. High, low efficiency, large error, unstable product quality, especially insufficient strength, poor wear resistance and high temperature resistance, and because of the single material, the quality of the shock absorber guide made is relatively high

Method used

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  • Guider of automobile shock absorber and manufacturing method thereof
  • Guider of automobile shock absorber and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] The automobile shock absorber guide of the present embodiment is made by following method:

[0028] Ingredients: Mix alloy powder, ceramic powder, porogen, and resin binder evenly in a mass ratio of 100:70:0.5:2, wherein the composition and mass percentage of alloy powder are: reduced copper powder: 6%, Graphite powder: 6%, iron phosphide powder: 1%, manganese sulfide: 1.8%, chromium powder: 7%, nickel powder: 2%, the balance is iron powder, and the iron powder includes particles with a mass percentage of 80%. Water atomized iron powder with a diameter of 40-120 μm and reduced iron powder with a particle size of 120-150 μm at a mass percentage of 20%; the particle size of reduced copper powder, graphite powder, iron phosphide powder, manganese sulfide, and chromium powder 30-80 μm; the particle size of the ceramic powder is 30-100nm, including β-SiC with a mass percentage of 55% and HBN with a mass percentage of 45%; the porogen includes porogen I, porogen II and For t...

Embodiment 2

[0033] The automobile shock absorber guide of the present embodiment is made by following method:

[0034] Ingredients: Mix alloy powder, ceramic powder, porogen, and resin binder evenly in a mass ratio of 100:80:0.7:4, wherein the composition and mass percentage of alloy powder are: reduced copper powder: 4%, Graphite powder: 7%, iron phosphide powder: 1.5%, manganese sulfide: 1.5%, chromium powder: 6%, nickel powder: 1.2%, the balance is iron powder, and the iron powder includes 75% by mass of granular Water atomized iron powder with a diameter of 40-120 μm and reduced iron powder with a particle size of 120-150 μm at a mass percentage of 25%; the particle size of reduced copper powder, graphite powder, iron phosphide powder, manganese sulfide, and chromium powder 30-80μm; the particle size of the ceramic powder is 30-100nm, including β-SiC with a mass percentage of 52% and HBN with a mass percentage of 48%; the porogen includes porogen I, porogen II and For the mixture of ...

Embodiment 3

[0039] The automobile shock absorber guide of the present embodiment is made by following method:

[0040] Ingredients: Mix alloy powder, ceramic powder, porogen, and resin binder evenly in a mass ratio of 100:50:1:4, wherein the composition and mass percentage of the alloy powder are: reduced copper powder: 2%, Graphite powder: 8%, iron phosphide powder: 0.3%, manganese sulfide: 3%, chromium powder: 3%, nickel powder: 3%, and the balance is iron powder, and the iron powder includes 90% by mass of particles Water atomized iron powder with a diameter of 40-120 μm and reduced iron powder with a particle size of 120-150 μm at a mass percentage of 10%; the particle size of reduced copper powder, graphite powder, iron phosphide powder, manganese sulfide, and chromium powder 30-80 μm; the particle size of the ceramic powder is 30-100nm, including β-SiC with a mass percentage of 60% and HBN with a mass percentage of 40%; the porogen includes porogen I, porogen II and For the mixture...

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Abstract

The invention relates to a guider of an automobile shock absorber and a manufacturingmethod thereof, and belongs to the field of automobile spare parts. The guider of the automobile shock absorber is formed by hot-pressing and sintering alloy powder, ceramic powder, pore-foaming agents and binders, wherein the mass ratio of the alloy powder, the ceramic powder, the pore-foaming agents and the binders is 100 to 40-90 to 0.3-1 to 1-5; the alloy powder is composed of, by weight, 2-8% of reduction copper powder, 2-8% of graphite powder, 0.3-2% of phosphorization iron powder, 0.5-3% of manganese sulfide, 3-12% of chromium powder, 0.5-3% of nickel powder and the balance iron powder. The invention further provides the manufacturingmethod of the guider of the automobile shock absorber. According to the manufacturing method, material for manufacturingthe guider of the automobile shock absorber is reasonably selected, the alloy powder and the ceramic powder are selected for manufacturing porous material, multi-stage high-temperature sintering and low-temperature tempering are adopted after forming, and therefore the weightof the guider of the automobile shock absorber is lowered, the comprehensive property of the guider is improved, the mechanical property of the guider is excellent, the strength, the rigidity, the wear resistance and the high temperature resistance of the guider are good, the cost is low, the use efficiency of the guider is improved, and the service life of the guider is prolonged.

Description

technical field [0001] The invention relates to an automobile shock absorber guide and a preparation method thereof, belonging to the technical field of material processing. Background technique [0002] A shock absorber is usually installed in the automobile suspension system. The shock absorber can reduce the fluctuation when the car is running, and the comfort and safety of the car can be improved through the shock absorption and buffering effect of the shock absorber. Shock absorbers convert rigidly connected components into fixed elastic connections. The guide is fitted on the shock absorber, mainly to guide the piston rod slidingly installed in the working cylinder of the shock absorber, to ensure the smoothness of the piston during operation, and to ensure the smoothness of the piston through the guide during the movement of the piston. The oil hole transports excess shock absorber oil to the oil storage cylinder to ensure the communication between the working cylind...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/14
CPCB22F1/0003B22F3/14
Inventor 潘成群
Owner NINGBO QUNXING POWDER METALLURGY
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