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A treatment method for radiators to inhibit plugging corrosion and sand holes

A treatment method and radiator technology, applied in the direction of metal material coating process, etc., can solve the problems of shortened service life, shortened service life, broken walls and other problems of radiators, so as to prevent incomplete cleaning, prolong service life, and fully contact. Effect

Active Publication Date: 2019-04-09
XINCHANG JIAXIANG ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Radiators are mostly made of cast iron, low-carbon steel and other materials. The inner wall of the radiator is prone to corrosion and even clogging when it is in contact with hot water for a long time, which shortens the life of the radiator.
Cast iron radiators are easy to produce and low in cost. They are the most common radiators at present, but they are easy to leave sand holes on the surface during the casting process. The wall thickness of the sand holes in the radiator is small. If corrosion occurs in the sand holes, it will easily lead to perforation and broken walls. and other problems, making its service life shorter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for treating radiators to suppress clogging corrosion and trachoma described in this embodiment, the steps include:

[0018] a. Pickling for the first time: 15 parts of industrial hydrochloric acid with a concentration of 30%, 10 parts of nitric acid and 30 parts of water are evenly mixed to prepare pickling solution. The temperature is 71 ° C, and the pickling time is 19 minutes. The FeCl of the pickling solution 2 The concentration is 50g / L; the pickling liquid is sprayed at 45 degrees to the pipe wall, so that the liquid surface of the pickling liquid arouses shock waves; after the pickling is completed, rinse with water first, and then rinse with high-pressure water until the water When the pH reaches above 5, the flushing is over;

[0019] b. Sanding repair: check the radiator tube wall after the first pickling, find out the areas with plugged corrosion and sand holes for sanding repair, and then wash the inner surface repaired by sanding with high-pressu...

Embodiment 2

[0024] A method for treating radiators to suppress clogging corrosion and trachoma described in this embodiment, the steps include:

[0025] a. Pickling for the first time: 15 parts of industrial hydrochloric acid with a concentration of 30%, 10 parts of nitric acid and 30 parts of water are uniformly mixed to prepare pickling solution. The temperature is 72 ° C, and the pickling time is 18 minutes. The FeCl of the pickling solution 2 The concentration is 55g / L; the pickling liquid is sprayed at 45 degrees to the pipe wall, so that the liquid surface of the pickling liquid arouses shock waves; after the pickling is completed, rinse with water first, and then rinse with high-pressure water until the water When the pH reaches above 5, the flushing is over;

[0026] b. Sanding repair: check the radiator tube wall after the first pickling, find out the areas with plugged corrosion and sand holes for sanding repair, and then wash the inner surface repaired by sanding with high-pre...

Embodiment 3

[0031] A method for treating radiators to suppress clogging corrosion and trachoma described in this embodiment, the steps include:

[0032] a. Pickling for the first time: 15 parts of industrial hydrochloric acid with a concentration of 30%, 10 parts of nitric acid and 30 parts of water are evenly mixed to prepare pickling solution. The temperature is 73 ° C, and the pickling time is 17 minutes. The FeCl of the pickling solution 2 The concentration is 60g / L; the pickling solution is sprayed at 45 degrees to the pipe wall, so that the liquid surface of the pickling solution arouses shock waves; after the pickling is completed, rinse with water first, and then rinse with high-pressure water until the water When the pH reaches above 5, the flushing is over;

[0033]b. Sanding repair: check the radiator tube wall after the first pickling, find out the areas with plugged corrosion and sand holes for sanding repair, and then wash the inner surface repaired by sanding with high-pre...

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PUM

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Abstract

The invention discloses a method for preventing blockage and corrosion and treating sand holes for a heating radiator. According to the method, acid pickling, grinding repairing and secondary picklingare carried out so that the inner wall of the heating radiator can be cleaned and leveled, and then a corrosion inhibitor and a pretreatment filming agent are added to treat the inner wall of the heating radiator. The method has the advantages that the sand holes in the inner wall of the heating radiator can be repaired, a protective film can be formed on the inner wall of the heating radiator, and therefore the inner wall of the heating radiator can be effectively prevented from being corroded, and the blockage of a pipeline inside the heating radiator caused by the corrosion can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of heating equipment protection, in particular to a treatment method for suppressing clogging, corrosion and trachoma of a radiator. Background technique [0002] Collective heating systems are adopted in northern China in winter. Radiators are the main heating equipment. Hot water flows through the radiators to dissipate heat to the interior of the house, increasing the indoor temperature and achieving the purpose of heating in winter. Radiators are mostly made of cast iron, low-carbon steel and other materials. The inner wall of the radiator is prone to corrosion and even clogging when it is in contact with hot water for a long time, which shortens the life of the radiator. Cast iron radiators are easy to produce and low in cost. They are the most common radiators at present, but they are easy to leave sand holes on the surface during the casting process. The wall thickness of the sand holes in the radiato...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/62C23G1/08
Inventor 张玥
Owner XINCHANG JIAXIANG ELECTRONICS TECH CO LTD