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Self-cleaning treatment method for electric boiler steel plate

A treatment method and electric heating boiler technology, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problems of reduced thermal conductivity of electric heating boiler steel plates, adhesion to the inner wall of electric heating boilers, threats to user life safety, etc., to ensure human safety Healthy, enhanced anti-atmospheric and superheated steam corrosion ability, avoid the effect of uneven heating

Inactive Publication Date: 2020-04-10
ANHUI GUODIAN ENERGY EQUIP ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The electric boiler converts electric energy into heat energy, and heats water to pressurized hot water or steam. It does not need a furnace, flue and chimney, and does not require a place to store fuel, which greatly reduces the cost of conventional coal-fired boilers. The electric heating boiler has the characteristics of no pollution, no noise, small footprint, convenient installation and use, full-automatic, safe and reliable, and thermal efficiency as high as 98%. It is a green and environmentally friendly product, so it is more and more popular among people. Welcome, widely used in government agencies, enterprises, factories, hospitals, schools, hotels, restaurants and other enterprises and institutions; It is difficult to remove, so that the inner wall of the electric heating boiler is continuously thickened, the thermal conductivity of the electric heating boiler steel plate is significantly reduced, a large amount of fuel will be wasted in the heating process of water, the volume will gradually decrease, the amount of water will be less and less, and a large amount of scale will be The hot water flowing out will be turbid, which will affect the drinking of hot water. Therefore, it is necessary to prevent the scale from sticking to the inner wall of the electric boiler, so as to facilitate the removal of scale and the maintenance of the electric boiler, and prolong the service life of the electric boiler. The most serious thing is that the original electric boiler Thick scale adheres to the inner wall, and the thermal conductivity of the electric heating boiler has been reduced. However, when the scale cracks, the local temperature of the inner wall of the steel plate of the electric heating boiler will increase instantaneously, which will easily cause the electric heating boiler to explode, which will cause serious damage to the life safety of users. big threat
[0003] However, the current treatment of steel plates is to improve the strength, fatigue resistance and corrosion resistance of steel plates, and has not been found to improve the self-cleaning performance of steel plates. If the self-cleaning performance of steel plates can be improved, hot water heating can be avoided. The scale generated in the process adheres to the inner wall of the electric boiler. Regular cleaning and maintenance of the electric boiler can ensure the safety of consumers and prolong the service life of the electric boiler.

Method used

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  • Self-cleaning treatment method for electric boiler steel plate
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Examples

Experimental program
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Effect test

Embodiment 1

[0024] A self-cleaning treatment method for an electric boiler steel plate, comprising the following steps:

[0025] (1) Cleaning: Place the electric heating steel plate in a sodium bicarbonate solution with a mass percent concentration of 4%, a temperature of 50°C, and ultrasonically clean it for 40 minutes, then rinse it with clean water to fully remove the stains on the surface of the steel plate and keep the steel plate clean , which is convenient for post-processing, drying, and cleaning of the steel plate;

[0026] (2) Quenching: Put the cleaned steel plate in a vacuum furnace, heat it to 570°C at a rate of 4°C / min, keep it for 60 minutes, then continue to heat it to 1040°C, and keep it at 90°C, so that the steel plate can be fully heated and the internal and external temperatures are consistent. Make the steel plate fully austenitized, take it out, put it in the quenching liquid, the temperature of the quenching liquid is 2~10°C, the preparation method of the quenching ...

Embodiment 2

[0032] A self-cleaning treatment method for an electric boiler steel plate, comprising the following steps:

[0033] (1) Cleaning: Place the electric heating steel plate in a sodium bicarbonate solution with a mass percentage concentration of 4.5%, a temperature of 53°C, ultrasonic cleaning for 45 minutes, and then rinse with clean water to fully remove the stains on the surface of the steel plate and keep the steel plate clean , which is convenient for post-processing, drying, and cleaning of the steel plate;

[0034] (2) Quenching: Put the cleaned steel plate in a vacuum furnace, heat it to 590°C at a rate of 4.5°C / min, keep it for 70 minutes, then continue to heat it to 1060°C, and keep it at 105°C, so that the steel plate can be fully heated and the internal and external temperatures are consistent. Make the steel plate fully austenitized, take it out, put it in the quenching liquid, the temperature of the quenching liquid is 2~10°C, the preparation method of the quenching...

Embodiment 3

[0040] A self-cleaning treatment method for an electric boiler steel plate, comprising the following steps:

[0041] (1) Cleaning: Place the electric heating steel plate in a sodium bicarbonate solution with a mass percent concentration of 5%, a temperature of 55°C, ultrasonic cleaning for 50 minutes, and then rinse with clean water to fully remove stains on the surface of the steel plate and keep the steel plate clean , which is convenient for post-processing, drying, and cleaning of the steel plate;

[0042] (2) Quenching: Put the cleaned steel plate in a vacuum furnace, heat it to 610°C at a rate of 5°C / min, keep it for 80 minutes, then continue to heat it to 1080°C, and keep it at 120°C, so that the steel plate can be fully heated, and the internal and external temperatures are consistent. Make the steel plate fully austenitized, take it out, put it in the quenching liquid, the temperature of the quenching liquid is 2~10°C, the preparation method of the quenching liquid is...

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Abstract

The invention mainly relates to the technical field of boiler processing, and discloses a self-cleaning treatment method for an electric boiler steel plate. The self-cleaning treatment method comprises the steps of: cleaning, quenching, nitriding, annealing, polishing and coating. According to the self-cleaning treatment method for the electric boiler steel plate provided by the invention, no toxic or harmful chemical reagent is used in the whole preparation process, safety and health of a human body can be guaranteed in preparation and use processes, harmful components which pollute the environment are not generated, the prepared steel plate has relatively high self-cleaning capability and can prevent incrustation in water from adhering to the inner surface of the electric heating boilerafter being prepared into an electric boiler, the inner wall of the electric heating boiler is kept clean, so that the inner wall keeps high and uniform thermal conductivity, water can be rapidly heated and boiled, thus energy is saved, meanwhile, due to the uniform thermal conductivity, explosion caused by uneven local heating of the inner wall of the boiler can be avoided, the use safety is improved, and the use requirements of consumers are met.

Description

technical field [0001] The invention mainly relates to the technical field of boiler processing, in particular to a self-cleaning treatment method for electric boiler steel plates. Background technique [0002] The electric boiler converts electric energy into heat energy, and heats water to pressurized hot water or steam. It does not need a furnace, flue and chimney, and does not require a place to store fuel, which greatly reduces the cost of conventional coal-fired boilers. The electric heating boiler has the characteristics of no pollution, no noise, small footprint, convenient installation and use, full-automatic, safe and reliable, and thermal efficiency as high as 98%. It is a green and environmentally friendly product, so it is more and more popular among people. Welcome, widely used in government agencies, enterprises, factories, hospitals, schools, hotels, restaurants and other enterprises and institutions; It is difficult to remove, so that the inner wall of the ...

Claims

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Application Information

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IPC IPC(8): C21D1/18C21D1/26C21D1/773C21D9/00C23C8/26C23C24/10
CPCC21D1/18C21D1/26C21D1/773C21D9/0081C23C8/26C23C24/10
Inventor 章代红陶方红邹庆硕杨勇
Owner ANHUI GUODIAN ENERGY EQUIP ENG
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