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A kind of preparation method of copper-plated round steel for grounding engineering

A round steel and copper plating technology, which is applied in the field of metallurgical steel, can solve the problems of uneven coating thickness, affecting the performance and service life of copper-plated round steel products, and small environmental pollution, achieving good uniformity, excellent oxidation resistance, The effect of little environmental pollution

Active Publication Date: 2018-10-26
江苏百欧货架有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in the preparation process of copper-plated round steel used in traditional grounding projects, cyanide copper plating is often used, and the thickness of the obtained coating is not uniform, which affects the performance and service life of copper-coated round steel products. Provide A kind of self-made weak alkaline solution is used as the electroplating solution to realize uniform cyanide-free copper plating on the surface of round steel, thereby making the method for copper-plated round steel for grounding engineering. The invention first washes the round steel with water and then washes it with sodium carbonate. Solution washing to remove the oil on the surface of the round steel, and then pickling and deionized water to prepare the pretreated round steel, and soak the pretreated round steel in a prefabricated mixed solution containing active ingredients such as dopamine, using dopamine in weak alkali Under strong conditions, it adheres to the surface of round steel, and uses dissolved oxygen in water to oxidize and self-polymerize on the surface of round steel to form a strong adhesion layer, and then cooperates with the complexation of dopamine to complex the copper ions in the solution and evenly adsorb on On the surface of the round steel, in the electroplating process, the round steel is used as the cathode and the graphite is used as the anode to achieve the purpose of uniformly depositing copper on the surface of the round steel. Finally, after washing and drying, dopamine is removed under anaerobic high temperature conditions, and the grounding project is obtained. Copper-plated round steel, the copper-plated round steel obtained in the present invention has a uniform coating layer, strong adhesion, and is not easy to fall off. The electroplating solution used has little environmental pollution, which effectively solves the problem of uneven thickness of the coating obtained by cyanide copper plating on traditional copper-coated round steel. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First cut a section of round steel with a diameter of 15 mm and a length of 15 cm, rinse it with water three times, place it in a beaker filled with 1 L of 10% sodium carbonate solution, and place the beaker in a water bath at a temperature of Under the condition of 45°C, after soaking for 30 minutes, take out the round steel, rinse it with deionized water for 3 times, and then wash it with 100mL of 1% hydrochloric acid for 2 times, then wash the round steel with deionized water until the washing solution is neutral. Place the round steel washed with deionized water in a vacuum drying oven, and dry it for 45 minutes at a temperature of 65° C. to obtain a pretreated round steel for subsequent use; then weigh 10 g of dopamine, 0.1 g of triethanolamine, and 30 g of boric acid, Pour it into a beaker containing 1000mL of deionized water, stir and mix with a glass rod until it is completely dissolved, then add dropwise a 10% potassium hydroxide solution to adjust the pH of the...

example 2

[0020] First intercept a section of round steel with a diameter of 18mm and a length of 18cm, rinse it with water for 4 times, place it in a beaker filled with 1L of 13% sodium carbonate solution, and place the beaker in a water bath at a temperature of Under the condition of 50°C, after soaking for 37 minutes, take out the round steel, rinse it with deionized water for 4 times, and then wash it with 125mL of 2% hydrochloric acid for 3 times, then wash the round steel with deionized water until the washing solution is neutral. Then place the round steel after deionized water washing in a vacuum drying oven, and dry it for 53 minutes at a temperature of 70° C. to obtain a pretreated round steel for subsequent use; then weigh 13 g of dopamine, 0.2 g of triethanolamine, and 35 g of boric acid, Pour it into a beaker containing 1100mL of deionized water, stir and mix with a glass rod until it is completely dissolved, then add dropwise a potassium hydroxide solution with a mass fract...

example 3

[0023] First cut a section of round steel with a diameter of 20mm and a length of 20cm, rinse it with water for 5 times, place it in a beaker filled with 2L of 15% sodium carbonate solution, and place the beaker in a water bath at a temperature of Under the condition of 55°C, after soaking for 45 minutes, take out the round steel, rinse it with deionized water for 5 times, and then wash it with 150mL of 3% hydrochloric acid for 4 times, then wash the round steel with deionized water until the washing solution is neutral. Place the round steel after washing with deionized water in a vacuum drying oven, and dry it for 60 minutes at a temperature of 75° C. to obtain a pretreated round steel for subsequent use; then weigh 15 g of dopamine, 0.3 g of triethanolamine, and 40 g of boric acid, Pour it into a beaker containing 1200mL deionized water, stir and mix with a glass rod until it is completely dissolved, then add dropwise a potassium hydroxide solution with a mass fraction of 15...

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Abstract

The invention discloses a preparation method of copper-plated round steel for grounding engineering, and belongs to the technical field of preparation of grounding materials. The preparation method comprises the following steps: washing round steel with water and a sodium carbonate solution in sequence, then washing the round steel with acid and deionized water, soaking the round steel in a prepared mixed solution containing effective components such as dopamine, forming a strong adhesive layer according to the characteristic that the dopamine is attached to the surface of the round steel under a weak alkaline condition and the characteristic that dissolved oxygen in water causes oxidization autoagglutination on the surface of the round steel, complexing copper ions in the solution under the complexing action of the dopamine, and uniformly adsorbing the copper ions on the surface of the round steel, wherein in an electroplating process, the round steel is used as a cathode, and graphite is used as an anode, thus fulfilling the aim of uniformly depositing copper on the surface of the round steel; and finally, performing washing and drying, thus obtaining the copper-plated round steel for the grounding engineering. A plating layer of the obtained copper-plated round steel is uniform, high in adhesion force and difficult to fall off; a used electroplating solution is low in pollution to the environment; and the problem that the thickness of the plating layer, which is obtained by cyanide copper plating, of the conventional copper-plated round steel is not uniform is effectively solved.

Description

technical field [0001] The invention relates to a metallurgical steel product, in particular to a method for preparing copper-coated round steel for grounding engineering. Background technique [0002] The grounding grid is used for grounding of AC and DC equipment in substation (converter station) and lightning protection grounding, which plays an important role in the safe operation of the power system. As the voltage level of the power system increases and its capacity increases, the fault current and ground current are also increasing, and accidents that occur or expand due to the ground grid frequently occur. Because of its important position in system safety and its characteristics of one-time construction and difficult maintenance, substation grounding grid has been paid attention to in engineering construction. In addition, the grounding technology is not easy to control during design and construction, which is one of the difficulties in engineering construction. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/38C25D5/34C25D21/10C25D5/50
CPCC25D3/38C25D5/34C25D5/50C25D21/10
Inventor 何迎春许丽君孙冬
Owner 江苏百欧货架有限公司