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A liquid plasma ion rust removal solution and rust removal process for steel

A liquid-phase plasma, steel technology, applied in the field of rust removal process, rust removal solution, rust removal solution formulation and rust removal process field, can solve the problems of dangerous operators, complicated formula of electrolytic rust remover, etc., and achieve rust removal speed quick effect

Active Publication Date: 2015-12-02
WUXI SUNDA INTELLIGENT AUTOMATION & ENG COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formula of this electrolytic rust remover is relatively complicated, and concentrated sulfuric acid is likely to cause danger to operators during the preparation process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A liquid phase ion derusting solution is prepared, and the liquid phase ion derusting solution contains: 2 wt% ammonium chloride, 1 wt% potassium sulfate, and the rest is deionized water.

[0068] The specific rust removal process is as follows:

[0069] The workpiece A to be derusted is made of No. 45 steel, the size is 70mm×50mm×2mm, and it is exposed to the outdoors for two weeks.

[0070] a. Install the steel material to be derusted on the hanger, soak it in the sodium hydroxide solution with a prepared concentration of 20wt% for 15 minutes to degrease, and rinse it with deionized water for 2 minutes after degreasing;

[0071] b. Heat the liquid plasma derusting solution to 80°C, put the hanger with the steel to be derusted on the support of the liquid derusting machine, and immerse in the liquid derusting solution; put the liquid derusting The positive pole of the rectifier of the machine receives derusting steel, the negative pole of the rectifier is connected in...

Embodiment 2

[0076] A liquid phase ion derusting solution is prepared, the liquid phase ion derusting solution contains: 3 wt % ammonium chloride, 1.5 wt % potassium sulfate, and the rest is deionized water.

[0077] The specific rust removal process is as follows:

[0078] The workpiece A to be derusted is made of No. 45 steel, the size is 70mm×50mm×2mm, and it is exposed to the outdoors for two weeks.

[0079] a. Put the steel to be derusted on the hanger, soak it in a sodium hydroxide solution with a prepared concentration of 20wt% for 15 minutes to remove oil, and use deionized water to rinse it for 2 minutes after soaking;

[0080] b. Heat the liquid plasma derusting solution to 85°C, put the hanger with the steel to be derusted on the support of the liquid derusting machine, and immerse in the liquid derusting solution; derust the liquid derusting The positive pole of the rectifier of the machine receives derusting steel, the negative pole of the rectifier is connected in parallel w...

Embodiment 3

[0085] A liquid phase ion derusting solution is prepared, and the liquid phase ion derusting solution contains: 3.5 wt% ammonium chloride, 2 wt% potassium sulfate, and deionized water as the rest.

[0086] The specific rust removal process is as follows:

[0087] The workpiece A to be derusted is made of No. 45 steel, the size is 70mm×50mm×2mm, and it is exposed to the outdoors for two weeks.

[0088] a. Put the steel to be derusted on the hanger, soak it in a sodium hydroxide solution with a prepared concentration of 20wt% for 15 minutes to remove oil, and use deionized water to rinse it for 2 minutes after soaking;

[0089] b. Heat the liquid plasma derusting solution to 90°C, put the hanger with the steel to be derusted on the support of the liquid derusting machine, and immerse it in the liquid derusting solution; derust the liquid derusting The positive pole of the rectifier of the machine receives derusting steel, the negative pole of the rectifier is connected in paral...

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Abstract

The invention relates to a liquid phase plasma derusting solution of steel and a derusting process. The derusting solution comprises the following components: 1-4wt% of ammonium chloride, 0.5-3wt% of potassium sulfate, and the balance water. The derusting process consists of: a. conducting oil removing treatment on steel to be derusted; b. heating the liquid phase plasma derusting solution, immersing the deoiled steel in the liquid phase plasma derusting solution, introducing a rectifier positive electrode, and connecting a rectifier negative electrode with a negative plate in parallel to conduct derusting; c. taking the steel out after derusting, immersing the steel in deionized water, and then carrying out flushing with deionized water; and d. drying the flushed steel, thus obtaining a derusted steel end product. The liquid phase plasma derusting solution provided in the invention has no damage on operation staff and has no pollution on the environment. The derusting process has the advantages of short derusting time, high efficiency, and improvement of steel surface smoothness, etc.

Description

technical field [0001] The invention relates to a derusting solution for derusting the surface of steel with liquid plasma plasma and a derusting process using the derusting solution, in particular to a formula of derusting solution for derusting steel using liquid plasma ion technology and its The rust removal process belongs to the technical field of metal anticorrosion or rust removal. Background technique [0002] Derusting the surface of steel is a necessary process before electroplating and painting of steel. At present, surface derusting methods mainly include mechanical derusting, chemical derusting and electrochemical derusting. Mechanical derusting (including sand blasting, shot blasting, high-pressure jetting, etc.) is likely to cause dust and noise, has low efficiency, has certain damage to steel, and is not suitable for thin-walled steel. Mechanical rust removal basically belongs to dry rust removal. The debris removed, in addition to rust and scale, often has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F1/06
Inventor 高建飞徐鹤霖张延武彭涛宗雪峰马裕辰
Owner WUXI SUNDA INTELLIGENT AUTOMATION & ENG COMPANY
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