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Neutral oil and rust remover as well as preparation method and application thereof

A rust remover, neutral technology, applied in the field of oil and rust removal, can solve the problems of unrealistic industrial application, poor rust removal effect, low treatment efficiency, etc., and achieve good large-scale industrial production and use prospects, rust removal time The effect of short, simple preparation process

Pending Publication Date: 2022-04-08
河北濡春新能源集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a certain current is added to the rust removal by chemical immersion method, the speed and effect of rust removal can also be improved to a certain extent, but there are problems such as high processing cost, emission pollution, and low processing efficiency.
In the prior art, although there is research on neutral degreasing and derusting agents, there are generally problems that the derusting effect is not as good as that of general chemical methods, and the cost is high, so it cannot be used in industrial applications.

Method used

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  • Neutral oil and rust remover as well as preparation method and application thereof
  • Neutral oil and rust remover as well as preparation method and application thereof
  • Neutral oil and rust remover as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 3g fatty alcohol polyoxyethylene ether, add 100g pure water and ultrasonically dissolve to obtain a clear and transparent solution for later use; weigh HEDP-4Na 8g, citric acid 5g, EDPA-2Na 3g, sodium tripolyphosphate 3g, potassium chloride 3g, sulfur 1g of urea, 5g of formic acid, and 100g of pure water are ultrasonically dissolved to obtain a clear and transparent solution, and the volume ratio of the two is 1:1 to obtain a neutral degreasing and rust removing agent.

[0033] Use the above-mentioned neutral degreasing and derusting agent to soak lightly rusted parts at room temperature for 5 minutes. After the treatment, the derusting effect is good. See figure 1 and figure 2 .

[0034] Use the above-mentioned neutral degreasing and derusting agent to soak the heavily rusted parts for 5 minutes at room temperature by conventional means. After the treatment, the derusting effect is not ideal. See image 3 .

[0035] Using the above-mentioned neutral degreasin...

Embodiment 2

[0038] Weigh 3g of fatty alcohol polyoxyethylene ether, add 100g of pure water to ultrasonically dissolve to obtain a clear and transparent solution for later use; weigh 86g of HEDP-4Na, 4g of citric acid, 2g of EDPA-2Na, 1g of sodium tripolyphosphate, 2g of potassium chloride, sulfur Add 1g of urea, 4g of formic acid, and 90g of pure water to ultrasonically dissolve to obtain a clear and transparent solution, and the volume ratio of the two is 1:1 to form a neutral degreasing and rust removing agent.

Embodiment 3

[0040] Weigh 3g fatty alcohol polyoxyethylene ether, add 100g pure water and ultrasonically dissolve to obtain a clear and transparent solution for later use; weigh HEDP-4Na 10g, citric acid 6g, EDPA-2Na 5g, sodium tripolyphosphate 4g, potassium chloride 5g, sulfur Add 3g of urea, 7g of formic acid, and 130g of pure water to ultrasonically dissolve to obtain a clear and transparent solution, and the volume ratio of the two is 1:1 to obtain a neutral degreasing and rust removing agent.

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Abstract

The invention provides a neutral oil and rust removal agent and a preparation method and application thereof, and relates to the technical field of oil and rust removal. The neutral oil and rust removing agent is prepared from fatty alcohol-polyoxyethylene ether, HEDP-4Na, citric acid, EDPA-2Na, sodium tripolyphosphate, potassium chloride, thiourea, formic acid and water. The neutral oil and rust remover disclosed by the invention has the characteristics of no corrosion to a metal body, high rust removal rate, short rust removal time and long rust prevention period in a rust removal process. The neutral oil and rust removing agent further has the advantages of being simple in preparation process and low in cost, and has good large-scale industrial production and use prospects.

Description

technical field [0001] The invention relates to the technical field of oil and rust removal, in particular to a neutral oil and rust remover and its preparation method and application. Background technique [0002] Corrosion of steel will bring huge economic losses every year, so steel corrosion protection is particularly important. At present, steel anticorrosion is generally achieved in two ways. One is to start from the source of iron and steel production, and provide protection for different purposes after iron and steel smelting and casting are completed. However, in the process of processing, steel is exposed to the air, and it is easy to oxidize in contact with humid air. If the existing oxides are not completely removed before protection, hidden dangers will remain even after protection, and the rusted parts will be damaged. Corrosion continues, thereby destroying the protective coating. Another way to protect steel is to derust corroded steel products during use....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/24
Inventor 韩凤全
Owner 河北濡春新能源集团有限公司
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