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Spring capable of preventing high temperature oxidation

A high-temperature oxidation-resistant, room-temperature technology, applied in the field of springs, can solve problems such as short service life of coatings, accelerated spring steel failure, insufficient coating adhesion, etc., to reduce strength, prevent mutual adhesion, preparation and use methods simple effect

Inactive Publication Date: 2016-04-20
SUZHOU CITY WUZHONG DISTRICT XUKOU FENGSHOU MACHINERY PARTS FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the different expansion coefficients of the fully decarburized layer and the partially decarburized layer during quenching, this will cause stress concentration, resulting in microcracks in the transition zone between the fully decarburized layer and the partially decarburized layer, which accelerates the failure of the spring steel
[0003] Among the existing anti-oxidation and decarburization methods of steel, the most convenient and low-cost method is to use anti-oxidation and decarburization coatings. Although the steel protective coatings currently on the market have good protection effects, they are expensive and the formula is kept secret. , and is only applicable to a certain kind of steel, and the application universality is not high; in addition, organic solvents are used in the existing steel protective coatings, which pollute the environment and are highly dangerous, and these coatings have insufficient adhesion, coating Common problems such as short service life of the layer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment provides a high-temperature oxidation-resistant spring, the surface of the spring is coated with a protective layer, and the protective layer includes the following components in parts by mass:

[0055] Glass powder: 60 parts, solvent water: 80 parts, grinding aid ethanol: 40 parts, auxiliary grinding aid sodium dodecylbenzenesulfonate: 1 part, binder polyvinyl alcohol: 30 parts, suspending agent clay : 10 copies;

[0056] Wherein, the glass powder includes the following components in parts by mass: SiO 2 : 40 parts, Al 2 o 3 : 2 parts, B 2 o 3 : 10 parts, Na 2 O: 5 parts, K 2 O: 3 copies;

[0057] The specific preparation method of the protective layer on the above-mentioned spring is as follows:

[0058] (1) Put the glass powder, grinding aid, and auxiliary grinding aid into the ball milling tank according to the above formula for ball milling at a speed of 300 rpm, alternating positive and negative every 30 minutes, and ball milling for 6 hour...

Embodiment 2

[0063] This embodiment provides a high-temperature oxidation-resistant spring, the surface of the spring is coated with a protective layer, and the protective layer includes the following components in parts by mass:

[0064] Glass powder: 125 parts, solvent water: 100 parts, grinding aid ethanol: 60 parts, auxiliary grinding aid sodium dodecylbenzenesulfonate: 5 parts, binder polyvinyl alcohol: 60 parts, suspending agent clay : 20 copies;

[0065] Wherein, the glass powder includes the following components in parts by mass: SiO 2 : 60 parts, Al 2 o 3 : 15 parts, B 2 o 3 : 20 parts, MgO: 15 parts, Na 2 O: 10 copies, K 2 O: 5 servings.

[0066] The specific preparation method of the protective layer on the above-mentioned spring is as follows:

[0067] (1) Put the glass powder, grinding aid, and auxiliary grinding aid into the ball milling tank according to the above formula for ball milling. The rotation speed is 350 rpm, and the positive and negative sides are alternate...

Embodiment 3

[0072] This embodiment provides a high-temperature oxidation-resistant spring, the surface of the spring is coated with a protective layer, and the protective layer includes the following components in parts by mass:

[0073] Glass powder: 92 parts, solvent water: 90 parts, grinding aid ethanol: 50 parts, auxiliary grinding aid sodium dodecylbenzenesulfonate: 3 parts, binder polyvinyl alcohol: 45 parts, suspending agent bentonite : 15 copies;

[0074] Wherein, the glass powder includes the following components in parts by mass: SiO 2 : 50 parts, Al 2 o 3 : 8 parts, B 2 o 3 : 15 parts, MgO: 8 parts, Na 2 O: 7 copies, K 2 O: 4 servings.

[0075] The specific preparation method of the protective layer on the above-mentioned spring is as follows:

[0076] (1) Put the glass powder, grinding aid, and auxiliary grinding aid into the ball milling tank according to the above formula for ball milling, the speed of which is 320 rpm, alternating positive and negative every 30 minu...

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PUM

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Abstract

The invention discloses a spring capable of preventing high temperature oxidation. The surface of the spring is coated with a layer of protective layer; the protective layer comprises the following components: glass powder, a solvent, a grinding aid, an auxiliary grinding aid, a binding agent and a suspending agent, wherein the glass powder comprises SiO2, Al2O3, B2O3, Na2O and K2O. The surface of the spring is coated with the protective layer which well protects the spring, so that the service life of the spring is prolonged; the protective layer has the characteristics of being high in applicability, less in pollution, low in cost, long in service life, simple in preparation process and the like.

Description

technical field [0001] The invention relates to a spring, in particular to a high-temperature oxidation-resistant spring. Background technique [0002] High-temperature oxidation and decarburization are prone to occur in the thermal processing of spring steel. Oxidation makes the surface of the steel rough and brittle, and the surface decarburization will seriously damage the fatigue performance of the spring steel, especially when ferrite appears on the surface of the spring steel. reduce the fatigue limit. In addition, due to the different expansion coefficients of the fully decarburized layer and the partially decarburized layer during quenching, this will cause stress concentration, resulting in microcracks in the transition zone between the fully decarburized layer and the partially decarburized layer, which accelerates the failure of the spring steel . [0003] Among the existing anti-oxidation and decarburization methods of steel, the most convenient and low-cost me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/12C09D129/04C03C12/00
CPCC09D1/00C03C12/00C08K3/346C08K3/40C08K5/05C08K5/42C08K13/02C09D7/61C09D7/63C09D129/04
Inventor 蒋建英蒋云英顾连英
Owner SUZHOU CITY WUZHONG DISTRICT XUKOU FENGSHOU MACHINERY PARTS FACTORY
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