Shock absorber connecting rod and machining method thereof

A processing method and technology for shock absorbers, applied in shock absorbers, springs/shock absorbers, shock absorbers, etc., can solve the impact of corrosion resistance of connecting rods, insufficient mechanical properties and corrosion resistance, shortened service life, etc. problems, to achieve the effect of improving current efficiency, improving connecting rod and corrosion resistance, and improving wear resistance and corrosion resistance

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

At present, most of the shock absorber connecting rods are made of cast iron and seamless steel. Often, the mechanical properties and corrosion resistance of the connecting rods processed by these two materials are insufficient, which greatly shortens their service life and causes waste of resources.
Usually, the processing method is mostly die-casting after direct smelting, without subsequent surface anti-rust treatment or whether there is plating or coating, the corrosion resistance of the connecting rod obtained in this way will also be affected

Method used

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  • Shock absorber connecting rod and machining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Weigh the alloy steel composition of the shock absorber connecting rod and its mass percentage composition: C: 0.15%, Si: 1%, Cr: 3.2%, Mn: 0.2%, Ga: 0.12%, N: 0.13%, nano WC : 0.28%, nano CBN: 0.4%, potassium tetratitanate: 0.18%, the balance is Fe and unavoidable impurities;

[0034] Melting C, Si, Cr, Mn, Ga, N and Fe directly into alloy liquid 1;

[0035] Raise the temperature of alloy liquid 1 to 960°C, add nano-WC, nano-CBN, and potassium tetratitanate while stirring, and simultaneously inject inert gas to obtain alloy liquid 2;

[0036] The mold is placed in a vibrating device, the amplitude of the vibrating device is 0.15mm, and the vibration frequency is 50Hz, then the alloy liquid 2 is injected into the mold to form, and then the shock absorber connecting rod semi-finished product is obtained through mechanical processing;

[0037] The semi-finished product of the shock absorber connecting rod is first oil-quenched at 660°C, and then subjected to electroplatin...

Embodiment 2

[0039] Weigh the alloy steel composition of the shock absorber connecting rod and its mass percentage composition: C: 0.1%, Si: 1.1%, Cr: 3.0%, Mn: 0.24%, Ga: 0.1%, N: 0.18%, nano WC : 0.16%, nano CBN: 0.48%, potassium tetratitanate: 0.1%, the balance is Fe and unavoidable impurities;

[0040] Melting C, Si, Cr, Mn, Ga, N and Fe directly into alloy liquid 1;

[0041] Raise the temperature of alloy liquid 1 to 955°C, add nano-WC, nano-CBN, and potassium tetratitanate while stirring, and simultaneously pass inert gas to obtain alloy liquid 2;

[0042] The mold is placed in a vibrating device, the amplitude of the vibrating device is 0.22mm, and the vibration frequency is 55Hz, then the alloy liquid 2 is injected into the mold to form, and then the shock absorber connecting rod semi-finished product is obtained through mechanical processing;

[0043] The semi-finished product of the shock absorber connecting rod is first oil-quenched at 670°C, and then subjected to electroplatin...

Embodiment 3

[0045] Weigh the alloy steel composition of the shock absorber connecting rod and its mass percentage composition: C: 0.2%, Si: 0.9%, Cr: 3.5%, Mn: 0.18%, Ga: 0.15%, N: 0.14%, nano WC : 0.28%, nano CBN: 0.32%, potassium tetratitanate: 0.22%, the balance is Fe and unavoidable impurities;

[0046] Melting C, Si, Cr, Mn, Ga, N and Fe directly into alloy liquid 1;

[0047] Raise the temperature of alloy liquid 1 to 970°C, add nano-WC, nano-CBN, and potassium tetratitanate while stirring, and simultaneously inject inert gas to obtain alloy liquid 2;

[0048] The mold is placed in a vibrating device, the amplitude of the vibrating device is 0.05mm, and the vibration frequency is 45Hz, then the alloy liquid 2 is injected into the mold for molding, and then the shock absorber connecting rod semi-finished product is obtained through mechanical processing;

[0049] The semi-finished product of the shock absorber connecting rod is first oil-quenched at 672°C, and then subjected to elect...

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PUM

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Abstract

The invention relates to a shock absorber connecting rod and a machining method thereof and belongs to the technical field of machining of shock absorber components. The connecting rod is made of alloy steel comprising, 0.05-0.25% of C, 0.8-1.2% of Si, 2.8-3.8% of Cr, 0.15-0.25% of Mn, 0.08-0.16% of Ga, 0.12-0.20% of N, 0.12-0.3% of nano WC, 0.3-0.5% of nano CBN, 0.08-0.25% of potassium tetratitanate and the balance Fe and inevitable impurities. The alloy steel of the shock absorber connecting rod is reasonable in compatibility, meanwhile, the raw materials are added in batches, vibration is applied during pouring, finally, electroplating is performed, and the abrasion resistance and corrosion resistance of the connecting rod are further improved.

Description

technical field [0001] The invention relates to a shock absorber connecting rod and a processing method thereof, and belongs to the technical field of processing shock absorber parts. Background technique [0002] Shock absorbers are widely used in vibration reduction and noise reduction of various vibration mechanical equipment and pipelines such as fans, pipelines, water pumps, generators, central air conditioners, wind cabinets, freezers, cooling towers, air compressors, precision instruments and meters, etc. It is the most widely used in the field of automobiles. The specific working principle is: when there is relative movement between the frame (or body) and the axle due to vibration, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly Flow from one cavity into another cavity through different pores. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form ...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/18B22D27/08C22C33/04C21D1/18C21D9/00C25D3/04F16F9/32
CPCC22C38/02B22D27/08C21D1/18C21D9/0075C22C33/04C22C38/001C22C38/002C22C38/04C22C38/18C25D3/04F16F9/3221
Inventor 柳平波王辉王海勇
Owner 宁波吉铭商贸有限公司
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