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Preparation method of hard protective micro-arc oxidation film layer on surface of titanium alloy ball valve

A technology of micro-arc oxidation and hard protection, which is applied in the direction of surface reaction electrolytic coating, anodic oxidation, metal material coating technology, etc., can solve the problem that the hardness of the film layer is difficult to achieve, so as to improve the bonding force, hardness and insulation performance effect

Active Publication Date: 2021-02-02
西安赛福斯材料防护有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardness of the micro-arc oxidation ceramic film prepared on the surface of aluminum alloy can reach a high value, but the hardness of the film prepared by micro-arc oxidation on the surface of titanium substrate is difficult to reach more than 700HV

Method used

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  • Preparation method of hard protective micro-arc oxidation film layer on surface of titanium alloy ball valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] Step 1. Titanium alloy ball valve pretreatment: Use 400 mesh, 800 mesh, 1200 mesh, 1500 mesh and 2000 mesh sandpaper to polish the titanium alloy ball valve until the surface is smooth and clean, and then place it on the polishing machine and use diamond polishing liquid to polish the titanium alloy ball valve The surface roughness is less than 0.6μm, then use ethanol to ultrasonically clean for 10 minutes and then dry;

[0028] Step 2. Sputter cleaning on the surface of the titanium alloy ball valve: install the dried titanium alloy ball valve in step 1 on the substrate table of the arc ion plating equipment as the substrate, and install the high-purity Al target with a mass purity of 99.999% on the On the cathode target of the arc ion plating equipment, then turn on the vacuum system to evacuate to make the vacuum degree in the vacuum chamber of the arc ion plating equipment cavity be 0.05Pa, apply a negative bias...

Embodiment 2

[0037] This embodiment includes the following steps:

[0038] Step 1. Titanium alloy ball valve pretreatment: Use 400 mesh, 800 mesh, 1200 mesh, 1500 mesh and 2000 mesh sandpaper to polish the titanium alloy ball valve until the surface is smooth and clean, and then place it on the polishing machine and use diamond polishing liquid to polish the titanium alloy ball valve The surface roughness is less than 0.6μm, then use ethanol to ultrasonically clean for 12 minutes and then dry;

[0039] Step 2. Sputter cleaning on the surface of the titanium alloy ball valve: install the dried titanium alloy ball valve in step 1 on the substrate table of the arc ion plating equipment as the substrate, and install the high-purity Al target with a mass purity of 99.999% on the On the cathode target of the arc ion plating equipment, then turn on the vacuum system to evacuate to make the vacuum degree in the vacuum chamber of the arc ion plating equipment cavity be 0.1Pa, apply a negative bias ...

Embodiment 3

[0043] This embodiment includes the following steps:

[0044] Step 1. Titanium alloy ball valve pretreatment: Use 400 mesh, 800 mesh, 1200 mesh, 1500 mesh and 2000 mesh sandpaper to polish the titanium alloy ball valve until the surface is smooth and clean, and then place it on the polishing machine and use alumina polishing solution to polish it to the titanium alloy The surface roughness of the ball valve is less than 0.6 μm, then use ethanol ultrasonic cleaning for 15 minutes and then dry;

[0045] Step 2. Sputter cleaning on the surface of the titanium alloy ball valve: install the dried titanium alloy ball valve in step 1 on the substrate table of the arc ion plating equipment as the substrate, and install the high-purity Al target with a mass purity of 99.999% on the On the cathode target of the arc ion plating equipment, and then turn on the vacuum system to evacuate to make the vacuum degree in the vacuum chamber of the arc ion plating equipment cavity be 0.2Pa, apply ...

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Abstract

The invention discloses a preparation method of a hard protective micro-arc oxidation film layer on the surface of a titanium alloy ball valve. The method comprises the steps that 1, the titanium alloy ball valve is polished after grinding and dried after cleaning; 2, sputtering cleaning is conducted on the surface of the titanium alloy ball valve through arc ion plating; 3, the surface, subjectedto sputtering cleaning, of the titanium alloy ball valve is subjected to deposition to form an Al layer; and 4, the titanium alloy ball valve with the hard protective micro-arc oxidation film layer on the surface is obtained through micro-arc oxidation. The hard protective micro-arc oxidation film layer is prepared on the surface of the titanium alloy ball valve by combining an arc ion plating method with a micro-arc oxidation method, so that the hard protective micro-arc oxidation film layer formed on the surface of the titanium alloy ball valve contains a TiO2 phase and an Al2O3 phase at the same time, and is a ceramic film layer; and the hardness and the insulating property of the hard protective micro-arc oxidation film layer on the surface of the titanium alloy ball valve are improved, meanwhile, the binding force of the hard protective micro-arc oxidation film layer and the surface of the titanium alloy ball valve is improved, and the using requirement of the titanium alloy ballvalve is met.

Description

technical field [0001] The invention belongs to the technical field of micro-arc oxidation film preparation, and in particular relates to a method for preparing a hard protective micro-arc oxidation film on the surface of a titanium alloy ball valve. Background technique [0002] The ball valve came out in the 1950s. It has the ability to rotate 90 degrees. The cock body is a sphere with a circular through hole or channel passing through its axis. With the rapid development of science and technology, the production process and product structure of ball valves have been continuously improved. In just 40 years, ball valves have rapidly developed into a major valve category. In our country, ball valves are widely used in the shipping field. In western industrially developed countries, the use of ball valves is also increasing year by year. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to be rota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C25D11/06C23C14/32C23C14/16
CPCC25D11/26C25D11/06C25D11/024C25D11/026C23C14/325C23C14/16
Inventor 屈静王宝云呼丹陶路路翁特杨小龙张宇舵高广睿
Owner 西安赛福斯材料防护有限责任公司