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Enameling processing technology of inner wall of steel radiator

A treatment process and heat sink technology, applied in the direction of coating, etc., can solve the problems of reduced service life and unqualified quality of internal anti-corrosion coatings, achieve low cost and price, solve corrosion leakage, and reduce unnecessary losses.

Inactive Publication Date: 2019-06-21
绍兴美衡德金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem that the service life of existing radiators is reduced due to the poor quality of internal anti-corrosion coatings, and to provide an enameling treatment process for the inner wall of steel radiators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 Immerse a single piece or a group of steel radiators in a hydrochloric acid solution with a mass concentration of 1% to remove oil stains and rust on the inner and outer surfaces of a single piece or group of steel radiators. It depends on the degree of oil and floating rust pollution of the sheet blank; immerse the single sheet or group of steel radiators after pickling in a sodium hydroxide solution with a mass concentration of 2% to neutralize the residual hydrochloric acid solution during the pickling process; Immerse the single piece or group of steel radiators after alkali washing in water for washing, dilute and remove the residual liquid after neutralization after pickling and alkali washing; immerse the single piece or group of steel radiators after washing with a mass concentration of 5 % phosphating solution to form a protective film; fill the above-mentioned steel radiator single sheet or group sheet with enamel powder slurry to form an inner coatin...

Embodiment 2

[0012] Example 2 Immerse the single piece or group of steel radiators in a hydrochloric acid solution with a mass concentration of 3%, and remove the oil and rust on the inner and outer surfaces of the single piece or group of steel radiators; the steel radiator after pickling Immerse the single piece or group of pieces in sodium hydroxide solution with a mass concentration of 4%; immerse the single piece or group of steel radiators after alkali washing in water for washing; immerse the single piece or group of steel radiators after washing Phosphating solution with a concentration of 8%; Fill the above-mentioned steel radiator single sheet or group sheet with enamel powder slurry; 50℃ hot air circulation to dry and cure the inner coating; 800℃ high temperature bake the inner coating for 4 minutes.

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PUM

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Abstract

The invention relates to an enameling processing technology of an inner wall of a steel radiator. The technology is characterized in that a single piece or grouped pieces of the steel radiator are soaked into 1-3% by mass concentration of hydrochloric acid solution; the single piece or the grouped pieces of the steel radiator are soaked into 2-5% by mass concentration of sodium hydroxide solution;and then the inner wall of the single piece or the grouped pieces of the steel radiator is washed with water. The technology is simple in processes, high in efficiency, and suitable for massive production.

Description

technical field [0001] The invention relates to a surface treatment process for a heat exchange device, in particular to a surface treatment process for the inner wall of a heat exchange or heat transfer device. Background technique [0002] All kinds of heating radiators currently on the market use some domestic or imported internal anti-corrosion coatings. The quality of the radiator is uneven, resulting in the general service life of the radiator is less than 5 years. In some areas where the water quality is relatively acidic, the phenomenon of corrosion and perforation of radiators occurs even within one to two years, causing damage to residents' home decoration and furniture. What's more, several floors will suffer from flooding problems, causing heavy losses. Contents of the invention [0003] The invention aims to solve the technical problem that the service life of the existing radiator is reduced due to the unqualified internal anti-corrosion coating quality, and...

Claims

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Application Information

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IPC IPC(8): F28F19/02
Inventor 李伟
Owner 绍兴美衡德金属制品有限公司