Steel surface treating agent and preparation method thereof

A steel surface and preparation method technology, applied in the field of surface chemistry, can solve the problems of natural environmental pollution, many treatment agent formulations, high labor intensity, etc., and achieve the effects of strong corrosion resistance, easy operation, and high film forming strength

Inactive Publication Date: 2015-02-18
李莹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the treatment agents used in the existing phosphating treatment contain components harmful to the human body and the environment. The evaporation of acid mist and the discharge of sewage will pollute the natu

Method used

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  • Steel surface treating agent and preparation method thereof

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Embodiment 1

[0033] A preparation method for a steel surface treatment agent, adding phosphoric acid, potassium chlorate, sodium chlorate, methenamine, sodium dodecylbenzenesulfonate with a mass concentration of 98% and a mass concentration of 90% in deionized water % of citric acid, triethanolamine, zinc nitrate, and leveling agent with a mass concentration of 97%, mix uniformly, add zinc oxide, and stir again for subsequent use; the weights of each raw material in the above steps are as follows:

[0034] Phosphoric acid 10g, potassium chlorate 1g, sodium chlorate 0.1g, urotropine 1.2g, sodium dodecylbenzenesulfonate 1g, citric acid 7g, triethanolamine 1g, zinc nitrate 0.5g, Pingpingjia 1g, zinc oxide 0.5g and deionized water 76.7g.

[0035] This embodiment is suitable for metals with light corrosion. When in use, the metal parts are immersed in the steel surface treatment agent prepared by the present invention for about 30 minutes at room temperature, and the metal surface is covered wi...

Embodiment 2

[0037] A preparation method for a steel surface treatment agent, adding phosphoric acid, potassium chlorate, sodium chlorate, methenamine, sodium dodecylbenzenesulfonate with a mass concentration of 98% and a mass concentration of 90% in deionized water % of citric acid, triethanolamine, zinc nitrate, and leveling agent with a mass concentration of 97%, mix uniformly, add zinc oxide, and stir again for subsequent use; the weights of each raw material in the above steps are as follows:

[0038] Phosphoric acid 20g, potassium chlorate 0.1g, sodium chlorate 0.2g, urotropine 0.8g, sodium dodecylbenzenesulfonate 3g, citric acid 5g, triethanolamine 3g, zinc nitrate 0.3g, Pingpingjia 5g, zinc oxide 0.1 g and deionized water 62.5g.

[0039] This embodiment is suitable for corroding common metals. When in use, the metal piece is soaked in the steel surface treatment agent prepared by the present invention for about 30 minutes at room temperature, and the metal surface is covered with a...

Embodiment 3

[0041] A preparation method for a steel surface treatment agent, adding phosphoric acid, potassium chlorate, sodium chlorate, methenamine, sodium dodecylbenzenesulfonate with a mass concentration of 98% and a mass concentration of 90% in deionized water % of citric acid, triethanolamine, zinc nitrate, and leveling agent with a mass concentration of 97%, mix uniformly, add zinc oxide, and stir again for subsequent use; the weights of each raw material in the above steps are as follows:

[0042] Phosphoric acid 32g, potassium chlorate 0.4g, sodium chlorate 1g, urotropine 1.5g, sodium dodecylbenzenesulfonate 6g, citric acid 2g, triethanolamine 5g, zinc nitrate 0.1g, Pingpingjia 3g, zinc oxide 0.3g and deionized water 48.7g.

[0043] This embodiment is suitable for metals with severe corrosion. When in use, the metal parts are immersed in the steel surface treatment agent prepared by the present invention for about 30 minutes at room temperature, and the metal surface is covered w...

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Abstract

The invention discloses a steel surface treating agent and a preparation method thereof. The preparation method comprises the following steps: adding a rust remover, potassium chlorate, sodium chlorate, a corrosion inhibitor, a surfactant, zinc nitrate and peregal in deionized water, adding zinc oxide after mixing uniformly, and mixing uniformly again for standby application, wherein the raw materials in the steps in percentage by weight are as follows: 0.1-0.5% of zinc oxide, 0.1-1% of potassium chlorate, 10-40% of a rust remover, 1-5% of peregal, 0.1-2% of zinc nitrate, 0.5-10% of a corrosion inhibitor, 0.1-1% of sodium chlorate and 1-6% of a surfactant; the deionized water is added to 100%. The steel surface treating agent integrates the functions of oil removal, rust removal, oxide layer removal and phosphorization, is particularly suitable for the metals obtained after hot rolling process, and is simple in treating process, low in labor intensity, low in treating cost, remarkable in rust removal effect, long in holding time and pollution-free to environment.

Description

technical field [0001] The invention relates to the technical field of surface chemistry, in particular to a steel surface treatment agent and a preparation method thereof. Background technique [0002] Before the steel products are processed and painted, the surface should be degreased and derusted to prevent corrosion in the middle process, improve the quality of the paint, and prolong the service life of the steel. Among the existing treatment methods, the most commonly used is phosphating treatment, which uses the action of phosphoric acid to form a phosphating protective film on the metal surface, thereby passivating the metal surface and slowing down the corrosion of metal by oxygen, moisture and other media in the atmosphere . However, most of the treatment agents used in the existing phosphating treatment contain components harmful to the human body and the environment. The evaporation of acid mist and the discharge of sewage will pollute the natural environment, an...

Claims

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Application Information

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IPC IPC(8): C23G1/06C23G1/08
CPCC23G1/06C23G1/08
Inventor 李莹王安栋许玉洁李浩正
Owner 李莹
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