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Surface treatment solution for bicycle common carbon steel and preparation method of surface treatment solution

A surface treatment liquid and carbon steel technology, applied in the coating process of metal materials, etc., can solve the problems of easy hydrogen embrittlement or over-corrosion of the workpiece, low cleaning efficiency, and acid mist formation, so as to achieve no oil deposition and descaling Good effect and strong cleaning power

Inactive Publication Date: 2014-06-11
江苏省轻工业科学研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The pickling solution needs to be replaced frequently. The pickling waste is a hazardous chemical waste. The cost of waste acid / wastewater treatment is high, and there is a problem of environmental pollution. Improper discharge will cause adverse effects on the environment
[0005] 2. The process line is long, labor-intensive and time-consuming, the quality of the process is not easy to control, and the workpiece is prone to hydrogen embrittlement or over-corrosion;
[0006] 3. Acid mist is formed during the use of strong acid and strong alkali, which is highly irritating and the working environment is harsh;
[0007] 4. A large amount of strong acid and strong alkali is used. Improper protection can easily cause personal injury accidents and have potential safety hazards.
However, the water-soluble metal cleaning agents currently available in the market have shortcomings such as low cleaning efficiency or phosphorus-containing compounds.

Method used

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  • Surface treatment solution for bicycle common carbon steel and preparation method of surface treatment solution
  • Surface treatment solution for bicycle common carbon steel and preparation method of surface treatment solution
  • Surface treatment solution for bicycle common carbon steel and preparation method of surface treatment solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Add 297.12kg of deionized water, 40kg of citric acid, 20kg of oxalic acid and 30kg of tartaric acid into the reaction kettle, stir at a speed of 60rpm for 15min, and obtain a mixture a;

[0053](2), with 222.84kg deionized water, dissolve 60kg coconut oil fatty acid diethanolamide, 20kg alkylphenol polyoxyethylene ether, 40kg fatty alcohol polyoxyethylene ether sodium sulfate and 5kg2-mercaptobenzothiazole respectively, Mix the dissolved components with the mixed solution a, and stir for 40 minutes at a speed of 15 rpm to obtain the mixed solution b;

[0054] (3) Add 2kg of ammonium thiocyanate into the mixed solution b, and stir at a speed of 40 rpm for 10 minutes to obtain the mixed solution c;

[0055] (4) Add 40kg of hydrochloric acid into the mixed solution c, and stir at a speed of 40 rpm for 10 minutes to obtain the mixed solution d;

[0056] (5) Add 0.2 kg of cobalt sulfate heptahydrate into the mixed liquid d, and stir at a speed of 60 rpm for 20 minutes t...

Embodiment 2

[0070] (1) Add 289.56kg of deionized water, 50kg of citric acid, 30kg of oxalic acid and 15kg of tartaric acid into a reaction kettle with mechanical stirring equipment, and stir at a speed of 80rpm for 10min to obtain a mixed solution a;

[0071] (2) Take 217.17kg deionized, dissolve 40kg coconut oil fatty acid diethanolamide, 50kg alkylphenol polyoxyethylene ether, 40kg fatty alcohol polyoxyethylene ether sodium sulfate and 10kg 2-mercaptobenzothiazole respectively, and dissolve Mix the dissolved components with the mixed solution a, and stir for 30 minutes at a speed of 25 rpm to obtain the mixed solution b;

[0072] (3) Add 1 kg of ammonium thiocyanate into the mixed solution b, and stir for 5 minutes at a speed of 60 rpm to obtain the mixed solution c;

[0073] (4) Add 40kg of hydrochloric acid into the mixed solution c, and stir for 5 minutes at a speed of 60 rpm to obtain the mixed solution d;

[0074] (5) Add 0.1 kg of cobalt sulfate heptahydrate into the mixed soluti...

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Abstract

The invention discloses a surface treatment solution for bicycle common carbon steel and a preparation method of the surface treatment solution, belonging to the technical field of chemical descaling. The treatment solution comprises citric acid, oxalic acid, tartaric acid, coconut fatty acid diethanol amide, alkylphenol polyoxyethylene ether, sodium fatty alcohol ether sulfate, ammonium thiocyanate, 2-thiol benzothiazole, cobaltous sulfate heptahydrate, hydrochloric acid and de-ionized water. The finished treatment solution is obtained by mixing and uniformly stirring the various components. The treatment solution, as a cleaning agent, is good in descaling effect, strong in detergency, convenient to use, environment-friendly, high in biodegradation rate, green and environmental protecting; in addition, the treatment solution is quite low in corrosion rate on equipment.

Description

technical field [0001] The invention relates to the technical field of chemical descaling, in particular to a common carbon steel surface treatment liquid for bicycles and a preparation method thereof. Background technique [0002] Carbon steel is divided into low carbon steel (0.10% to 0.25% carbon content), medium carbon steel (0.25% to 0.60% carbon content) and tool steel (0.60% to 1070% carbon content) according to the carbon content. According to the quality, it can be divided into ordinary carbon steel and high-quality carbon steel. Ordinary carbon steel with a carbon content of about 0.20% is the most produced and used ordinary carbon steel in my country. This is the most commonly used carbon steel in the bicycle industry. This ordinary carbon steel for bicycles is often used To make parts such as front forks and frames of bicycles, these processed and formed parts are assembled on the complete bicycle after painting or electroplating. [0003] In the bicycle industr...

Claims

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Application Information

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IPC IPC(8): C23C22/46C23G1/08
Inventor 郑超
Owner 江苏省轻工业科学研究设计院有限公司
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