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Surface treatment method of metal pressure gage shell

A surface treatment and pressure gauge technology, applied in the direction of metal material coating process, etc., can solve the problems of easy rust, affecting the quality and life of use, and achieve the effect of prolonging the service life, promoting the application value, and improving the corrosion resistance characteristics.

Inactive Publication Date: 2018-05-18
马鞍山合力仪表有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressure gauge casing is an important part of the pressure gauge. It is the carrier for the fixed placement of each part. It is mostly made of metal. Because the surface of the metal is relatively active, it is prone to rust when used in the atmosphere or in corrosive media. Then it affects the overall quality of use and life, and this problem needs to be improved and solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for surface treatment of a metal pressure gauge housing, comprising the steps of:

[0025] (1) Cleaning treatment:

[0026] First put the shell into the chemical degreasing agent and soak for 10 minutes, take it out and rinse it with deionized water for later use;

[0027] (2) Preparation of passivation solution:

[0028] First weigh the following substances in corresponding parts by weight: 10 parts of molybdate, 5 parts of tungstate, 3 parts of phosphoric acid, 0.3 part of sodium cetylbenzenesulfonate, 0.4 part of nonylphenol polyoxyethylene ether, 400 parts of water ; Then the above-mentioned substances are put into the reaction kettle together, and the passivation solution is obtained after stirring evenly for subsequent use;

[0029] (3) Passivation treatment:

[0030] Put the shell treated in step (1) into the passivation solution prepared in step (2) for passivation treatment, and at the same time treat it with a magnetic field, and take it out after ...

Embodiment 2

[0039] A method for surface treatment of a metal pressure gauge housing, comprising the steps of:

[0040] (1) Cleaning treatment:

[0041] Put the shell into the chemical degreasing agent and soak it for 13 minutes, take it out and rinse it with deionized water for later use;

[0042] (2) Preparation of passivation solution:

[0043] First weigh the following substances in corresponding parts by weight: 12 parts of molybdate, 7 parts of tungstate, 5 parts of phosphoric acid, 0.5 part of sodium cetylbenzenesulfonate, 0.5 part of nonylphenol polyoxyethylene ether, 430 parts of water ; Then the above-mentioned substances are put into the reaction kettle together, and the passivation solution is obtained after stirring evenly for subsequent use;

[0044] (3) Passivation treatment:

[0045] Put the shell treated in step (1) into the passivation solution prepared in step (2) for passivation treatment, and at the same time treat it with a magnetic field, and take it out after 13 ...

Embodiment 3

[0054] A method for surface treatment of a metal pressure gauge housing, comprising the steps of:

[0055] (1) Cleaning treatment:

[0056] First put the shell into the chemical degreasing agent and soak it for 15 minutes, take it out and rinse it with deionized water for later use;

[0057] (2) Preparation of passivation solution:

[0058] First weigh the following substances in corresponding parts by weight: 14 parts of molybdate, 8 parts of tungstate, 6 parts of phosphoric acid, 0.6 part of sodium cetylbenzenesulfonate, 0.6 part of nonylphenol polyoxyethylene ether, 450 parts of water ; Then the above-mentioned substances are put into the reaction kettle together, and the passivation solution is obtained after stirring evenly for subsequent use;

[0059] (3) Passivation treatment:

[0060] Put the shell treated in step (1) into the passivation solution prepared in step (2) for passivation treatment, and at the same time treat it with a magnetic field, and take it out aft...

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PUM

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Abstract

The invention discloses a surface treatment method of a metal pressure gage shell. The surface treatment method comprises the following steps of (1) cleaning treatment, (2) passivation liquid preparation, (3) passivation treatment and (4) drying treatment. According to the surface treatment method, the pressure gage shell is subjected to special surface treatment, the corrosion resisting characteristic of the pressure gage shell is effectively improved, the service life of the pressure gage shell is prolonged, and good application and popularization value is achieved.

Description

technical field [0001] The invention belongs to the technical field of instrument processing, and in particular relates to a surface treatment method for a metal pressure gauge casing. Background technique [0002] Pressure gauge (English name: pressure gauge) refers to an instrument that uses elastic elements as sensitive elements to measure and indicate pressure higher than the environment. It is widely used and it is used in almost all industrial processes and scientific research fields. It can be seen everywhere in heat pipe network, oil and gas transmission, water supply and gas supply system, vehicle repair and maintenance factory and shop. Especially in the process of industrial process control and technical measurement, due to the high mechanical strength and convenient production of the elastic sensitive components of mechanical pressure gauges, mechanical pressure gauges are more and more widely used. The pressure gauge casing is an important part of the pressure ...

Claims

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Application Information

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IPC IPC(8): C23C22/42C23C22/73
CPCC23C22/42C23C22/73
Inventor 廖彩礼
Owner 马鞍山合力仪表有限责任公司