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Anti-corrosion heat exchange tube and preparing method thereof

A corrosion-resistant, heat-exchanging tube technology, applied in heat exchange equipment, lighting and heating equipment, anti-corrosion coatings, etc., can solve the problems of small-diameter fluid resistance, easy scaling and clogging, and inconvenient cleaning, etc., to achieve pipe diameter increase Large, not easy to scale and block, easy to clean

Inactive Publication Date: 2018-02-02
ZHEJIANG HUACAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fluid resistance of the small diameter is large, it is inconvenient to clean, and it is easy to foul and block

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix 50 parts of epoxy resin, 10 parts of heat-conducting graphite powder, 5 parts of m-xylylenediamine and 0.3 parts of quaternary ammonium salt, and melt and extrude the material. The extrusion parameters are 85°C in the first zone, 90°C in the second zone, and the screw speed 45Hz, the extrudate was cooled and crushed to obtain flakes, and then mixed with 1 part of baking soda, the mixture was vertically ground with a coffee machine, and a porous corrosion-resistant powder coating was prepared with a 250-mesh screen.

[0026] Clean the working tube with pure water, spray or soak the working tube with degreasing agent, clean and remove oil, and clean the residual degreasing agent on the working tube with pure water. After the working tube is dry, use porous corrosion-resistant powder coating to spray the metal surface Coating, curing and cooling.

Embodiment 2

[0028] Mix 80 parts of epoxy resin, 20 parts of heat-conducting graphite powder, 10 parts of m-xylylenediamine and 0.5 parts of quaternary ammonium salt, and melt and extrude the material. The extrusion parameters are 85°C in the first zone, 90°C in the second zone, and the screw speed 45Hz, the extrudate was cooled and pulverized to obtain flakes, and then mixed with 3 parts of baking soda, the mixture was vertically ground with a coffee machine, and a porous corrosion-resistant powder coating was prepared with a 250-mesh screen.

[0029] Clean the working tube with pure water, spray or soak the working tube with degreasing agent, clean and remove oil, and clean the residual degreasing agent on the working tube with pure water. After the working tube is dry, use porous corrosion-resistant powder coating to spray the metal surface Coating, curing and cooling.

Embodiment 3

[0031] Mix 65 parts of epoxy resin, 15 parts of heat-conducting graphite powder, 8 parts of m-xylylenediamine and 0.4 part of quaternary ammonium salt, and melt and extrude the material. The extrusion parameters are 85°C in the first zone, 90°C in the second zone, and the screw speed 45Hz, the extrudate was cooled and pulverized to obtain flakes, and then mixed with 2 parts of baking soda, the mixture was vertically ground with a coffee machine, and a porous corrosion-resistant powder coating was prepared with a 250-mesh screen.

[0032] Clean the working tube with pure water, spray or soak the working tube with degreasing agent, clean and remove oil, and clean the residual degreasing agent on the working tube with pure water. After the working tube is dry, use porous corrosion-resistant powder coating to spray the metal surface Coating, curing and cooling.

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PUM

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Abstract

The invention relates to the field of heat exchangers, and discloses an anti-corrosion heat exchange tube and a preparing method thereof. The heat exchange tube is composed of a working tube and a porous coating. The preparing method of the heat exchange tube comprises the following steps that (1) washing is carried out, wherein pure water is used for washing the working tube; (2) degreasing is carried out, wherein a degreasing agent is used for spraying or soaking the working tube, and washing is carried out for oil removal; (3) washing is carried out, wherein pure water is used for washing the working tube to remove the rudimental degreasing agent on the working tube; and (4) powder spraying is carried out, wherein after the working tube is dried, porous anti-corrosion powder coating isused, metal surface powder coating spraying is carried out, and curing and cooling are carried out. According to the anti-corrosion heat exchange tube and the preparing method, the interior of a heatexchange tube is coated with the porous coating material, the heat exchange area is increased, and cost is saved; under the condition that the heat transferring area is the same, the tube diameter ofthe heat exchange tube is increased, washing is facilitated, and scaling and blockage are not easy; and in addition, the porous coating material can prevent explosive boiling, the preparing method andtechnological processes are simple, cost is low, and the anti-corrosion heat exchange tube is very suitable for industrial production.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to a corrosion-resistant heat exchange tube and a preparation method thereof. Background technique [0002] The heat exchange tube is one of the elements of the heat exchanger, which is placed inside the cylinder and used for the exchange of heat between the two media. Has high thermal conductivity and good isothermal properties. The commonly used dimensions of heat exchange tubes (outer diameter x wall thickness) are mainly Φ19mmx2mm, Φ25mmx2.5mm and Φ38mmx2.5mm seamless steel pipes and Φ25mmx2mm and Φ38mmx2.5mm stainless steel pipes. The use of small pipe diameter can increase the heat transfer area per unit volume, compact structure, reduce metal consumption, and increase heat transfer coefficient. It is estimated that changing the heat exchange tube of the heat exchanger with the same diameter from Φ25mm to Φ19mm can increase the heat transfer area by about 40% and save more tha...

Claims

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Application Information

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IPC IPC(8): F28F13/18F28F19/02C09D5/03C09D5/08C09D163/00C09D7/61C09D7/63
CPCF28F13/185C09D5/033C09D5/08C09D163/00F28F19/02
Inventor 孙华强文佳军
Owner ZHEJIANG HUACAI NEW MATERIAL CO LTD
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