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Preparation method of stainless steel cold drawn pipe cleaning additive liquid

A technology of cold-drawing tubes and adding liquid, which is applied in the field of chemical cleaning, which can solve problems such as air pollution, difficulty in cleaning, and human hazards, and achieve the effects of maintaining gloss, good cleaning effect, and cost saving

Inactive Publication Date: 2014-10-08
ZHANGJIAGANG HUACHENG LOCOMOTIVE PRECISION PIPE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the cleaning of stainless steel cold-drawn tubes is difficult to control. In order to remove the sintered matter and dirt inside and outside the tubes, the traditional method is to use nitric acid and hydrofluoric acid for heating. The smaller the tube, the more difficult it is to clean.
Strong acid is highly corrosive to the surface of stainless steel cold-drawn tubes. Often the outside of the tube has been cleaned, but the sintered matter inside the tube has not fallen off. After a long time, the sintered matter in the tube has fallen off, and the outside of the tube has been severely corroded; and due to nitric acid and hydrogen Fluoric acid is heated to produce acid mist, which not only has great harm to the human body, but also seriously pollutes the air, and the discharge of waste acid water also seriously pollutes water resources

Method used

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Embodiment Construction

[0033] The present invention will now be further described. In the examples, fatty alcohol polyoxyethylene ether is JFC penetrating agent, and alkylphenol polyoxyethylene ether is emulsifier OP-10.

[0034] A preparation method for cleaning additives for stainless steel cold-drawn pipes, which has the following steps: (1) at normal temperature, adding water with a weight percentage of 172 kg in a mixer; (2) adding 120% citric acid with a content of 99.3% while stirring Kilogram; (3), 140 kilograms of content 99.6% oxalic acid while stirring; (4), 12 kilograms of content 99% sodium molybdate while stirring; (5), 100 kilograms of content 85% triethanolamine while stirring; (6), throw in 240 kilograms of JFC penetrants while stirring; (7), throw in 40 kilograms of emulsifier OP-10 while stirring; (8), throw in 40 kilograms of content 31% hydrochloric acid while stirring; (9), Throw in 16 kilograms of sodium tripolyphosphate while stirring; (10), throw in 80 kilograms of ethanol ...

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Abstract

The invention discloses a preparation method of a stainless steel cold drawn pipe cleaning additive liquid. The preparation method of the stainless steel cold drawn pipe cleaning additive liquid is characterized in that the stainless steel cold drawn pipe cleaning additive liquid is prepared by mixing raw materials comprising 14-19wt% of water, 8-15wt% of citric acid, 10-18wt% of oxalic acid, 0.9-1.5wt% of sodium molybdate, 7-12wt% of triethanolamine, 18-30wt% of fatty alcohol polyoxyethylene ether, 2-6wt% of alkylphenol polyoxyethylene, 2-6wt% of hydrochloric acid, 1.0-2.0wt% of sodium tripolyphosphate, 5-10wt% of ethanol, and the balance hydrofluoric acid at normal temperature. The stainless steel cold drawn pipe cleaning additive liquid has the advantages of simple operation, no heating, good cleaning effect, no corrosion to the surface of stainless steel, maintenance of the glossiness of the stainless steel, repeated use, no damages to skins, low carbon, environmental protection and cost saving.

Description

technical field [0001] The invention relates to the technical field of chemical cleaning, in particular to a method for preparing an additive liquid suitable for cleaning stainless steel cold-drawn pipes. Background technique [0002] At present, the cleaning of stainless steel cold-drawn tubes is difficult to control. In order to remove the sintered matter and dirt inside and outside the tubes, the traditional method is to use nitric acid and hydrofluoric acid for heating. The smaller the tube, the more difficult it is to clean. Strong acid is highly corrosive to the surface of stainless steel cold-drawn tubes. Often the outside of the tube has been cleaned, but the sintered matter inside the tube has not fallen off. After a long time, the sintered matter in the tube has fallen off, and the outside of the tube has been severely corroded; and due to nitric acid and hydrogen Fluoric acid is heated to produce acid mist, which not only has great harm to the human body, but also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/08
Inventor 许亚明常盛成
Owner ZHANGJIAGANG HUACHENG LOCOMOTIVE PRECISION PIPE MFG
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