Automobile shock absorber piston and production technique thereof

A technology of automobile shock absorber and production process, which is applied in the direction of shock absorber, spring/shock absorber, shock absorber, etc., which can solve the problems of low production efficiency, damage, and low dimensional accuracy, and achieve improved wear resistance , the effect of improving production efficiency

Inactive Publication Date: 2015-02-11
YANGZHOU TIANJIAN MACHINERY MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing shock absorber piston is damaged due to its insufficient strength and hardness during the working process, which affects the normal operation of the shock absorber
[0003] The traditional shock absorber piston adopts casting processing method, the dimensional accuracy is relatively low, and the follow-up processing technology is complicated, which requires...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An automobile shock absorber piston, the components of the shock absorber piston and the parts by weight are: 115 parts of iron powder, 2 parts of carbon powder, 2.2 parts of zinc stearate, 4 parts of copper powder, and 1.2 parts of manganese sulfide , 0.065 parts of 5# white oil, 360 parts of iron powder.

[0018] The production technology of preparing automobile shock absorber piston comprises the following steps:

[0019] (1) Mixing: Put 115 parts of iron powder, 2 parts of carbon powder, 2.2 parts of zinc stearate, 4 parts of copper powder, 1.2 parts of manganese sulfide, and 0.065 parts of 5# white oil into the powder metallurgy mixer for 15 minutes, then add 360 parts of iron powder and stir for 35 minutes;

[0020] (2) Compression: Put the mixed raw materials into the powder metallurgy mold, and use a 50T press molding machine to press once;

[0021] (3) Sintering: Send the pressed blank into the sintering furnace through the sintering mesh for high-temperature...

Embodiment 2

[0028] An automobile shock absorber piston, the components of the shock absorber piston and the parts by weight are: 125 parts of iron powder, 3 parts of carbon powder, 2.6 parts of zinc stearate, 5 parts of copper powder, and 1.5 parts of manganese sulfide , 0.07 parts of 5# white oil, 375 parts of iron powder.

[0029] The production technology of preparing automobile shock absorber piston comprises the following steps:

[0030] (1) Mixing: Put 125 parts of iron powder, 3 parts of carbon powder, 2.6 parts of zinc stearate, 5 parts of copper powder, 1.5 parts of manganese sulfide, and 0.07 parts of 5# white oil into the powder metallurgy mixer for 15 minutes, then add 375 parts of iron powder and stir for 35 minutes;

[0031] (2) Compression: Put the mixed raw materials into the powder metallurgy mold, and use a 50T press molding machine to press once;

[0032] (3) Sintering: Send the pressed blank into the sintering furnace through the sintering mesh for high-temperature s...

Embodiment 3

[0039] An automobile shock absorber piston, the components of the shock absorber piston and the parts by weight are: 135 parts of iron powder, 4 parts of carbon powder, 2.8 parts of zinc stearate, 6 parts of copper powder, and 1.8 parts of manganese sulfide , 0.075 parts of 5# white oil, 390 parts of iron powder.

[0040] The production technology of preparing automobile shock absorber piston comprises the following steps:

[0041] (1) Mixing: Put 135 parts of iron powder, 4 parts of carbon powder, 2.8 parts of zinc stearate, 6 parts of copper powder, 1.8 parts of manganese sulfide, and 0.075 parts of 5# white oil into the powder metallurgy mixer for 15 minutes, then add 390 parts of iron powder and stir for 35 minutes;

[0042] (2) Compression: Put the mixed raw materials into the powder metallurgy mold, and use a 50T press molding machine to press once;

[0043] (3) Sintering: Send the pressed blank into the sintering furnace through the sintering mesh for high-temperature...

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PUM

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Abstract

The invention relates to an automobile shock absorber piston and a production technique thereof. The automobile shock absorber piston comprises 480 to 500 parts of iron powder, 2 to 4 parts of carbon powder, 2.2 to 2.8 parts of zinc stearate, 4 to 6 parts of copper powder, 1.2 to 1.8 parts of manganese sulfide and 0.065 to 0.075 parts of 5# white oil by weight. The production technique includes steps of material mixing, pressing, sintering, oil immersion, finishing, cleaning and blackening. The automobile shock absorber piston prepared by the production technique according to the proportions is high in intensity and hardness, and accordingly the wearing resistance thereof is improved. One-step forming process and one-step finishing process are used for pressing the automobile shock absorber piston, the problem that the other processes need subsequent finish machining is reduced, and accordingly the production efficiency is improved.

Description

technical field [0001] The invention relates to an automobile shock absorber piston and a production process thereof, belonging to the technical field of powder metallurgy. Background technique [0002] The shock absorber piston is an important part of the shock absorber, which requires high strength and hardness. The existing shock absorber piston is damaged due to insufficient strength and hardness during the working process, thereby affecting the normal operation of the shock absorber. [0003] The traditional shock absorber piston adopts the casting process, the dimensional accuracy is relatively low, and the follow-up processing process is complicated, which requires high-precision machine tools to manufacture. Powder metallurgy is used for pressing and forming. The pressing cannot be formed at one time, and subsequent processing is required. The production efficiency is relatively low. Manual molds are used for finishing. The finishing accuracy is not high, the effici...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F5/00C22C38/16F16F9/32
Inventor 顾余文卜后雨
Owner YANGZHOU TIANJIAN MACHINERY MFR
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