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Pickling agent additive and preparation method thereof

A technology of additives and pickling agents, applied in the field of pickling agents, can solve the problems of low over-corrosion and high pickling efficiency, and achieve the effects of prolonging service life, avoiding high volatility and simple preparation method.

Inactive Publication Date: 2020-08-14
上海涤宝科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no pickling agent additive compounded with inorganic acid and organic acid, which has high pickling efficiency, low over-corrosion, and no hydrogen embrittlement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A pickling agent additive, which comprises the following raw material components in parts by weight: 4 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.4 part of stabilizer, and 85 parts of water.

[0021] The mixed acid is composed of the following raw material components: citric acid, oxalic acid and hydrochloric acid.

[0022] The weight-number ratio of the citric acid, oxalic acid and hydrochloric acid is 2:1.5:1.

[0023] The corrosion inhibitor is hexamethylenetetramine.

[0024] Described stabilizer is sodium oxalate and sodium citrate.

[0025] The final portion ratio of the sodium oxalate and sodium citrate is 2:1.5.

[0026] The preparation method of above-mentioned pickling agent additive, step is as follows:

[0027] S1. Add a stabilizer to the water and stir evenly;

[0028] S2. Add mixed acid and corrosion inhibitor respectively to the product in step S1, and stir for 30 minutes to prepare the pickling agent additive.

Embodiment 2

[0030] A pickling agent additive, which comprises the following raw material components in parts by weight: 3.5 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.3 part of stabilizer, and 82 parts of water.

[0031] The mixed acid is composed of the following raw material components: citric acid, oxalic acid and hydrochloric acid.

[0032] The weight-number ratio of the citric acid, oxalic acid and hydrochloric acid is 2:1.5:1.

[0033] The corrosion inhibitor is hexamethylenetetramine.

[0034] Described stabilizer is sodium oxalate and sodium citrate.

[0035] The final portion ratio of the sodium oxalate and sodium citrate is 2:1.5.

[0036] The preparation method of above-mentioned pickling agent additive, step is as follows:

[0037] S1. Add a stabilizer to the water and stir evenly;

[0038] S2. Add mixed acid and corrosion inhibitor respectively to the product in step S1, and stir for 30 minutes to prepare the pickling agent additive.

Embodiment 3

[0040] A pickling agent additive, which comprises the following raw material components in parts by weight: 3 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.2 part of stabilizer, and 80 parts of water.

[0041] The mixed acid is composed of the following raw material components: citric acid, oxalic acid and hydrochloric acid.

[0042] The weight-number ratio of the citric acid, oxalic acid and hydrochloric acid is 2:1.5:1.

[0043] The corrosion inhibitor is hexamethylenetetramine.

[0044] Described stabilizer is sodium oxalate and sodium citrate.

[0045] The final portion ratio of the sodium oxalate and sodium citrate is 2:1.5.

[0046] The preparation method of above-mentioned pickling agent additive, step is as follows:

[0047] S1. Add a stabilizer to the water and stir evenly;

[0048] S2. Add mixed acid and corrosion inhibitor respectively to the product in step S1, and stir for 30 minutes to prepare the pickling agent additive.

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Abstract

The invention discloses a pickling agent additive and a preparation method thereof, and belongs to the technical field of pickling agents. The pickling agent additive comprises the following raw material components of, by weight, 2-5 parts of mixed acid, 0.2-0.4 part of a corrosion inhibitor, 0.2-0.4 part of a stabilizer, and 80-85 parts of water, and the mixed acid comprises the following raw material components of citric acid, oxalic acid and hydrochloric acid. The preparation method comprises the following steps that S1, the stabilizer is added into water, and uniform stirring is conducted;and S2, the mixed acid and the corrosion inhibitor are added into a product in the step S1 and stirred for 30 min, and the pickling agent additive is obtained. The pickling agent additive provided bythe invention has a good degreasing effect on a metal material, can effectively remove rust on the surface of the metal material and is free of corrosion and hydrogen embrittlement phenomena, the service life of the metal material is greatly prolonged, and the pickling effect is remarkable. The preparation method of the pickling agent additive provided by the invention is easy to implement and facilitates production.

Description

technical field [0001] The invention relates to the technical field of pickling agents, in particular to a pickling agent additive and a preparation method thereof. Background technique [0002] Metal materials will adhere to various dirt during processing, storage, transportation and use. If not cleaned in time, it will not only affect the cleanliness of the metal material surface, but also cause and accelerate the corrosion of the metal surface, thereby affecting the quality of the metal material and shorten the service life. [0003] Pickling agent is mainly used for pickling and brightening treatment of metal materials such as stainless steel, aluminum, and steel parts. It has the functions of degreasing, rust removal, brightening, passivation, rust prevention, and fog suppression, which greatly shortens the cleaning time. [0004] The traditional pickling agent uses inorganic acids, among which hydrochloric acid is used as the pickling agent, which has low cost, high e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/06
CPCC23G1/06C23G1/061C23G1/063
Inventor 张海超
Owner 上海涤宝科技有限公司
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