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Piston rod of shock absorber and manufacturing method for piston rod

A technology of piston rod and shock absorber, applied in the direction of shock absorber, spring/shock absorber, shock absorber, etc., can solve the problems of low dimensional accuracy, unsatisfactory quality, high component rejection rate, and simple preparation process. Easy to operate, improve hardness, improve product density effect

Inactive Publication Date: 2018-04-06
宁波吉铭商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional casting method is usually used, the dimensional accuracy is relatively low, and subsequent processing is required, and the scrap rate of the processed parts is high. In addition, considering the quality of the parts, the quality of the casting process cannot meet the requirements.

Method used

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  • Piston rod of shock absorber and manufacturing method for piston rod

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The raw material of described shock absorber piston rod comprises the component of following parts by weight:

[0023] Fe powder: 70 parts; copper composite powder: 5 parts; nickel powder: 1 part; antimony powder: 0.5 parts; yttrium oxide: 0.5 parts; hard fatty acid zinc: 0.5 parts; layer. The particle size of the Fe powder is 1 μm, the particle size of the copper powder is 1 μm, and the particle size of the nickel powder is 1 μm.

[0024] The preparation method of the copper composite powder comprises: dissolving manganese sulfate in acetone, and then adding copper powder, the mass ratio of manganese sulfate to copper powder is 0.5:1. Stir evenly to obtain a slurry, and the slurry is centrifuged at 4000r / min and spray-dried to obtain a powder. 2 , at 900°C, heated for 40 minutes to obtain copper composite powder coated with manganese.

[0025] The preparation method of the piston rod includes the following steps: weighing the raw materials according to the proportio...

Embodiment 2

[0027] The raw material of described shock absorber piston rod comprises the component of following parts by weight:

[0028] Fe powder: 70 parts; copper composite powder: 5 parts; nickel powder: 1 part; antimony powder: 0.5 parts; yttrium oxide: 0.5 parts; hard fatty acid zinc: 0.5 parts; layer. The particle diameter of the Fe powder is 500 nm, the particle diameter of the copper powder is 4 μm, and the particle diameter of the nickel powder is 1 μm.

[0029] The preparation method of the copper composite powder comprises: dissolving manganese sulfate in acetone, and then adding copper powder, the mass ratio of manganese sulfate to copper powder is 0.5:1. Stir evenly to obtain a slurry, and the slurry is centrifuged at 4000r / min and spray-dried to obtain a powder. 2 , at 900°C, heated for 40 minutes to obtain copper composite powder coated with manganese.

[0030] The preparation method of the piston rod includes the following steps: weighing the raw materials according to...

Embodiment 3

[0032] The raw material of described shock absorber piston rod comprises the component of following parts by weight:

[0033] Fe powder: 70 parts; copper composite powder: 5 parts; nickel powder: 1 part; antimony powder: 0.5 parts; lanthanum oxide: 0.5 parts; hard fatty acid zinc: 0.5 parts; layer. The particle diameter of the Fe powder is 500 nm, the particle diameter of the copper powder is 4 μm, and the particle diameter of the nickel powder is 1 μm.

[0034] The preparation method of the copper composite powder comprises: dissolving manganese sulfate in acetone, and then adding copper powder, the mass ratio of manganese sulfate to copper powder is 0.5:1. Stir evenly to obtain a slurry, and the slurry is centrifuged at 4000r / min and spray-dried to obtain a powder. 2 , at 900°C, heated for 40 minutes to obtain copper composite powder coated with manganese.

[0035] The preparation method of the piston rod includes the following steps: weighing the raw materials according ...

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Abstract

The invention relates to the technical field of cars, in particular to a piston rod of a shock absorber and a manufacturing method for the piston rod. Raw materials of the piston rod of the shock absorber comprise the following components in parts by weight: 65-80 parts of Fe powder, 2-8 parts of copper composite powder, 0.5-1.2 parts of nickel powder, 0.3-0.8 part of antimony powder, 0.2-0.8 partof rare-earth oxide and 0.3-0.8 part of a lubricating agent; and the copper composite powder is a manganese layer coated on the surface of copper powder. The manufacturing method for the piston rod comprises the following steps of: weighing the raw materials in proportion to perform ball-milling; performing dry-pressing molding after spray-drying; heating up molded products to a temperature of 450-550 DEG C and performing heat-preserving ultrasonic treatment for 20-30 minutes; re-pressing after cooling; and putting the molded products into a vacuum furnace to heat up to a temperature of 1500-1700 DEG C, and preserving the heat for sintering for 1-2 hours.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a shock absorber piston rod and a preparation method thereof. Background technique [0002] The shock absorber (Absorber) is used to suppress the shock when the spring rebounds after absorbing the shock and the impact from the road surface. It is widely used in automobiles to accelerate the attenuation of frame and body vibrations and improve the ride comfort of automobiles. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will reciprocate, and the shock absorber is used to suppress this spring jumping. Wherein the bottom valve seat assembly is one of the important components. The shock absorption principle of the shock absorber is that when the frame or wheel and the body are vibrated and there is relative movement, the piston in the shock absorber moves up and down, and the shock absorbe...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F1/02B22F3/16B22F5/00F16F9/32
CPCF16F9/3221B22F3/16B22F5/00B22F2998/10B22F1/17B22F1/10
Inventor 柳平波柳碧辉王辉
Owner 宁波吉铭商贸有限公司
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