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A surface treatment process for valves

A surface treatment and valve technology, applied in the field of valve surface treatment technology, can solve the problems of incomplete surface treatment of fine structures, high labor intensity, low unit output, etc., and achieve the effect of reducing physical injury, reducing labor, and simple raw materials

Active Publication Date: 2019-11-08
SUZHOU SUTENG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polishing agents have problems such as quick rust return and incomplete cleaning. Many polishing agents contain fluorine compounds or phosphorus-containing compounds, which pollute the environment.
Moreover, the commonly used polishing agents on the market are mainly solid, that is, polishing paste. This product is often operated intermittently in use, with high labor intensity, low unit output, and insufficient surface treatment for fine structures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A valve surface treatment process, comprising the following steps:

[0018] (1) Place the processed valve under the nozzle and rinse with water; after rinsing, dry it at 60-80°C;

[0019] (2) The valve after drying is placed in a pickling tank for pickling; the solution in the pickling tank is a mixed aqueous solution of sulfuric acid and nitric acid, wherein the mass fraction of sulfuric acid is 10-15%, and the mass fraction of nitric acid is 15-20%;

[0020] (3) After the pickling is completed, soak the valve in the polishing agent, and perform chemical polishing under the condition of vibration; after the polishing is completed, rinse it with water again; after the washing is completed, dry it at 60-80°C;

[0021] (4) Spray anti-corrosion agent on the surface of the valve after drying, and air-dry it under the condition of fan blowing.

[0022] The polishing agent includes the following raw materials in parts by weight: 15 parts of nano silicon dioxide, 50 parts of...

Embodiment 2

[0028] A valve surface treatment process, comprising the following steps:

[0029] (1) Place the processed valve under the nozzle and rinse with water; after rinsing, dry it at 60-80°C;

[0030] (2) The valve after drying is placed in a pickling tank for pickling; the solution in the pickling tank is a mixed aqueous solution of sulfuric acid and nitric acid, wherein the mass fraction of sulfuric acid is 10-15%, and the mass fraction of nitric acid is 15-20%;

[0031] (3) After the pickling is completed, soak the valve in the polishing agent, and perform chemical polishing under the condition of vibration; after the polishing is completed, rinse it with water again; after the washing is completed, dry it at 60-80°C;

[0032] (4) Spray anti-corrosion agent on the surface of the valve after drying, and air-dry it under the condition of fan blowing.

[0033] The polishing agent includes the following raw materials in parts by weight: 10 parts of nano silicon dioxide, 60 parts of...

Embodiment 3

[0039] A valve surface treatment process, comprising the following steps:

[0040] (1) Place the processed valve under the nozzle and rinse with water; after rinsing, dry it at 60-80°C;

[0041] (2) The valve after drying is placed in a pickling tank for pickling; the solution in the pickling tank is a mixed aqueous solution of sulfuric acid and nitric acid, wherein the mass fraction of sulfuric acid is 10-15%, and the mass fraction of nitric acid is 15-20%;

[0042] (3) After the pickling is completed, soak the valve in the polishing agent, and perform chemical polishing under the condition of vibration; after the polishing is completed, rinse it with water again; after the washing is completed, dry it at 60-80°C;

[0043] (4) Spray anti-corrosion agent on the surface of the valve after drying, and air-dry it under the condition of fan blowing.

[0044] The polishing agent includes the following raw materials in parts by weight: 13 parts of nano silicon dioxide, 56 parts of...

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PUM

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Abstract

The invention discloses a surface treatment process of a valve. The surface treatment process of the valve comprises the following steps that the valve obtained through machining is washed with water,the valve is directly placed in an acid pickling tank for acid pickling after being washed with the water, after acid pickling is completed, the valve is soaked in a polishing agent, and chemical polishing is performed under the condition of vibration; and after polishing is completed, an anticorrosive agent is sprayed on the surface of the valve. According to the surface treatment process, the flow is simple, mechanical stream line operation can be adopted in the whole process, so that labor is reduced, and physical damage to workers is reduced; dust or obvious dirt on the surface of the valve is washed away with water, and grease or rust on the surface of the valve is washed away through acid pickling, the surface of the valve is polished through the polishing agent, and the valve is protected through the anticorrosive agent.

Description

technical field [0001] The invention relates to a valve surface treatment process, which belongs to the technical field of valve processing. Background technique [0002] After the valve is processed, there is usually a layer of oil or other chemical agents attached to the surface. After the valve has been used for a period of time, it will be corroded by the service environment and rust will appear on the surface. Therefore, many valves need a certain brightness. Polishing treatment is an important part of valve processing. During the polishing process, polishing agent is often added to improve the brightness of the valve and clean the surface of the valve. However, the existing polishing agents have problems such as quick rust return and incomplete cleaning. Many polishing agents contain fluorine compounds or phosphorus compounds, which pollute the environment. Moreover, the commonly used polishing agents on the market are mainly solid, that is, polishing paste. This prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/02C23F3/00C09D175/04C09D133/04C09D103/02C09D183/04C09D5/08C09D5/14C09D7/63C09D7/65C09D7/61
CPCC08L2205/035C09D5/08C09D5/14C09D7/61C09D7/63C09D7/65C09D175/04C23F3/00C23G1/02C08L33/04C08L3/02C08L83/04C08K3/34C08K5/42
Inventor 周天毫
Owner SUZHOU SUTENG ELECTRONICS TECH
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