Machining method for improving abrasion and corrosion resistance of valve

A processing method and anti-corrosion technology, which is applied in the field of metal materials, can solve the problems that the normal service life of the valve cannot be effectively extended, and achieve the effects of optimizing the heat treatment process, improving mechanical properties, and increasing the nucleation rate

Inactive Publication Date: 2017-11-24
ANHUI WODE VALVE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the performance of the valve, it is often coated on the surface of the valve, but the wear resistance and corrosion resistance of the coated valve still need to be improved, and the normal service life of the valve cannot be effectively extended

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of processing method that the present invention proposes to improve valve wear resistance and corrosion resistance comprises the following steps:

[0021] S1. Soak the valve in the activation solution, then wash it until neutral, polish it, wash it again, and dry it to obtain material A;

[0022] S2. Sandblasting material A to obtain material B;

[0023] S3, performing plasma cladding treatment on material B to obtain material C;

[0024] S4, heat-treating the material C.

Embodiment 2

[0026] A kind of processing method that the present invention proposes to improve valve wear resistance and corrosion resistance comprises the following steps:

[0027] S1. Soak the valve in the activation solution, then wash it until neutral, polish it, then wash it with water, and dry it to obtain material A; wherein, the activation solution is composed of one or more of hydrochloric acid, citric acid, and hypochlorous acid ;

[0028] S2. Sandblasting the material A to obtain material B; wherein, the process parameters of the sandblasting are: the blasting gas pressure is 0.6MPa, the blasting distance is 4cm, and the blasting angle is 30°;

[0029] S3, material B is subjected to plasma cladding treatment to obtain material C; wherein, the process parameters in the plasma cladding treatment process are as follows: synchronous powder feeding is adopted, the ion gas flow rate is 2L / min, the protective gas is argon and argon The flow rate is 5L / min, the transfer arc voltage is ...

Embodiment 3

[0032] A kind of processing method that the present invention proposes to improve valve wear resistance and corrosion resistance comprises the following steps:

[0033] S1. Soak the valve in the activation solution, then wash it until neutral, polish it, then wash it with water, and dry it to obtain material A; wherein, the activation solution is composed of one or more of hydrochloric acid, citric acid, and hypochlorous acid ;

[0034] S2. Sandblasting the material A to obtain material B; wherein, the process parameters of the sandblasting are: the blasting gas pressure is 0.65MPa, the blasting distance is 8cm, and the blasting angle is 60°;

[0035]S3. The material B is subjected to plasma cladding treatment to obtain material C; wherein, the process parameters in the plasma cladding treatment process are as follows: synchronous powder feeding is adopted, the ion gas flow rate is 3L / min, the protective gas is argon and argon The flow rate is 6.5L / min, the transfer arc volta...

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Abstract

The invention discloses a machining method for improving abrasion and corrosion resistance of a valve. The machining method comprises the following steps that firstly, the valve is arranged in activation liquid to be immersed, then the valve is washed to be neutral, grinding is conducted, then washing is conducted, drying is conducted, and a material A is obtained; secondly, the material A is subjected to sand blasting treatment, and a material B is obtained; thirdly, the material B is subjected to plasma cladding treatment, and a material C is obtained; and fourthly, the material C is subjected to heat treatment. According to the provided machining method for improving abrasion and corrosion resistance of the valve, through process optimization, a plating material and a base body are tightly combined, distribution is uniform, the high temperature resistance, corrosion resistance and creeping resistance of the valve are effectively improved, and the service life of the valve is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a processing method for improving the wear resistance and corrosion resistance of valves. Background technique [0002] Valves are usually divided into intake valves and exhaust valves. The role of the intake valve is to suck air into the engine and mix it with fuel for combustion. The role of the exhaust valve is to discharge the burned exhaust gas and dissipate heat. The working environment of the valve is harsh, and it needs to bear high mechanical load and thermal load when working, and at the same time, it also needs to bear the impact load of seating and the static load given by the gas pressure, so it has certain requirements for its performance. In order to improve the performance of the matrix material, attaching a thin layer of material with a certain bonding strength on the surface of the matrix material to overcome certain defects of the matrix material and im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 林青锋
Owner ANHUI WODE VALVE MFG
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