A corrosion-resistant spring suspension

A spring suspension and corrosion-resistant technology, applied in the field of spring suspension, can solve the problems of general performance, strength, wear resistance and corrosion resistance, etc., to improve tissue stability, strength and toughness, growth resistance and resistance The effect of oxidative capacity

Active Publication Date: 2017-09-19
NINGBO QIANHAO METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spring suspension in the prior art is generally made of ordinary alloy steel through an ordinary forming process, and its performance is relatively ordinary, especially the strength, wear resistance, and corrosion resistance are all low

Method used

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  • A corrosion-resistant spring suspension
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Raw material steelmaking: According to the composition elements and mass percentage of alloy steel used in spring suspension, ingredients: C: 0.12%, Cr: 0.5%, Si: 0.16%, Mn: 0.98%, Al: 0.042%, N: 0.012%, Mo : 0.28%, Cu: 0.035%, S: 0.015%, V: 0.12%, RE: 0.12%, P≤0.015%, the balance is Fe and unavoidable impurities; the raw materials are smelted into molten steel, and the molten steel is vacuum smelted, Casting and rolling into steel plates, and processing the steel plates to obtain spring suspension blanks.

[0033] The spring suspension blank was cryogenically treated at -150°C for 1.2h, and then the temperature was raised to 240°C at a rate of 4°C / min for low temperature tempering treatment for 135min to obtain a spring suspension semi-finished product.

[0034] Treat the spring suspension semi-finished product in the electroplating solution at 42°C for 40 minutes. The composition of the electroplating solution is: zinc ion 20g / L, nickel ion 2.4g / L, sodium hydroxide 18...

Embodiment 2

[0036] Raw material steelmaking: according to the composition elements and mass percentage of alloy steel used in spring suspension, ingredients: C: 0.14%, Cr: 0.45%, Si: 0.18%, Mn: 1.05%, Al: 0.038%, N: 0.010%, Mo : 0.28%, Cu: 0.038%, S: 0.018%, V: 0.1%, RE: 0.14%, P≤0.015%, the balance is Fe and unavoidable impurities; the raw materials are smelted into molten steel, and the molten steel is vacuum smelted, Casting and rolling into steel plates, and processing the steel plates to obtain spring suspension blanks.

[0037] The spring suspension blank was cryogenically treated at -160°C for 1.4h, and then the temperature was raised to 238°C at a rate of 3.8°C / min for low temperature tempering treatment for 140min to obtain a spring suspension semi-finished product.

[0038] Treat the spring suspension semi-finished product in the electroplating solution at 40°C for 45 minutes. The composition of the electroplating solution is: zinc ion 22g / L, nickel ion 2.0g / L, sodium hydroxide ...

Embodiment 3

[0040] Raw material steelmaking: According to the composition elements and mass percentage of alloy steel used in spring suspension, ingredients: C: 0.15%, Cr: 0.4%, Si: 0.20%, Mn: 0.8%, Al: 0.05%, N: 0.015%, Mo : 0.25%, Cu: 0.04%, S: 0.005%, V: 0.15%, RE: 0.08%, P≤0.015%, the balance is Fe and unavoidable impurities; the raw materials are smelted into molten steel, and the molten steel is vacuum smelted, Casting and rolling into steel plates, and processing the steel plates to obtain spring suspension blanks.

[0041] The spring suspension blank was cryogenically treated at -138°C for 1.5h, and then the temperature was raised to 250°C at a rate of 3°C / min for low temperature tempering treatment for 120min to obtain a spring suspension semi-finished product.

[0042] Treat the semi-finished spring suspension in the electroplating solution at 45°C for 30 minutes. The composition of the electroplating solution is: zinc ions 15g / L, nickel ions 2.8g / L, sodium hydroxide 150g / L, tet...

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Abstract

The invention relates to a corrosion-resistant spring suspension bracket and belongs to the technical field of alloy material processing. The spring suspension bracket is made of alloy steel. The alloy steel comprises, by mass, 0.10%-0.15% of C, 0.4%-0.6% of Cr, 0.14%-0.20% of Si, 0.8%-1.15% of Mn, 0.03%-0.05% of Al, 0.008%-0.015% of N, 0.25%-0.35% of Mo, 0.025%-0.04% of Cu, 0.005%-0.022% of S, 0.08%-0.15% of V, 0.08%-0.15% of RE, 0-0.015% of P and the balance Fe and inevitable impurities. According to the corrosion-resistant spring suspension bracket, the compatibility is reasonable; and the spring suspension bracket is formed in a sealing treatment and processing mode, specifically, cryogenic treatment and low temperature tempering are conducted at first, then a zinc-nickel alloy layer is electroplated on the surface of the spring suspension bracket, and after passivating is conducted, silanization treatment is conducted, so that the corrosion resistance and the mechanical performance of the spring suspension bracket are greatly improved.

Description

technical field [0001] The invention relates to a corrosion-resistant spring suspension, which belongs to the technical field of alloy material processing. Background technique [0002] Steel is used in various aspects of industrial production and life. It plays a very important role in human life and work. It is the basis of scientific and technological development. However, steel is easy to rust in the atmosphere and the corrosion process is quite complicated. Different degrees of adverse effects on life, resulting in unnecessary economic losses. In my country, according to the 2008 survey results of the China Industrial and Natural Environment Corrosion Investigation Project Team, the direct economic loss caused by corrosion reached 230 billion yuan, and the indirect economic loss was 500-600 billion yuan, which was equivalent to 100% of my country's gross national product in that year. 5%. Therefore, it is very important to study methods to prevent steel corrosion. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/18C22C38/16C22C38/12C22C38/06C22C38/04C22C38/02C22C33/04
CPCC22C33/04C22C38/005C22C38/02C22C38/04C22C38/06C22C38/12C22C38/16C22C38/18
Inventor 蒋建平蒋乾
Owner NINGBO QIANHAO METAL PROD
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