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An electroplating process

An electroplating process and copper plating technology, which is applied in the field of continuous electroplating of steel strips, can solve the problems of low comprehensive production efficiency, large one-time investment, waste of financial and material resources, etc., and achieve the effects of protecting safety, saving floor space, and saving resources

Active Publication Date: 2019-01-29
SHANDONG JIANZHU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] According to comparative literature, the original continuous copper plating of steel strip requires multiple copper plating tanks, auxiliary tanks and other auxiliary equipment. The continuous copper plating production line of steel strip is 80 meters long and occupies a large area. About 20,000 yuan, the one-time investment is too large, the overall production efficiency is low, and a large number of staff are required for maintenance operations, resulting in a waste of financial and material resources

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Embodiment 1

[0011] This embodiment is used to illustrate an electroplating process provided by the present invention.

[0012] (1) Pretreatment tank

[0013] (1) Hot water washing tank: fully immerse the 300mm wide steel strip in hot water at 70-80°C, and wash it for 20-30s. The size of the tank body: length 1800mm, width 1200mm, height 500mm.

[0014] (2) Ultrasonic degreasing tank, ultrasonic degreasing cleaning agent, the concentration is 5%, the temperature is 40 ~ 50 ℃, the ultrasonic frequency is 25 kHz, the size of the tank body: length 1800mm, width 1200mm, height 500mm;

[0015] (3) Electrolytic degreasing tank: immerse the steel strip treated in step (2) into the electrolytic degreasing solution, the temperature of the alkali solution is 60-80°C, and the current density is 8-10A / dm 2 , first degreasing the cathode for 1min, then degreasing the anode for 15s (after degreasing, use low chloride ion water or pure water with a concentration below 600ppm for cleaning).

[0016] (2)...

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Abstract

The invention relates to an electroplating technology which mainly comprises a front treatment process, an electrocoppering process and an aftertreatment groove. The front treatment process mainly comprises the steps of ultrasonic oil removal, electrolytic degreasing, washing, activating and washing; a front treatment groove is divided into three parts including an ultrasonic oil removal groove, an electrolytic degreasing groove and an activating groove, and the three parts independently exist in closed space; and the electrocoppering process mainly comprises copper pre-plating, copper plating, recovering and washing; and an aftertreatment process mainly comprises the steps of drying and oil immersion. The electroplating technology is mainly characterized in that a steel strip is in an S-shaped walking direction in the overall process, and the cost of the steel strip is about one third of the cost of a production line. A closed treatment groove can conduct emergency treatment, meanwhile, the phosphorus content in sulfate copper electroplating is extremely small, plating layer bonding is more compact, a manufactured Bundy pipe is not prone to desoldering, resources can be effectively saved, and safety of persons is protected; and a cyanide copper plating solution is used for conducting copper preplating firstly, and therefore adhesiveness of the plating layer on the steel strip is good, and meanwhile, the electroplating technology meets the current environment-friendly production principle.

Description

technical field [0001] The invention relates to a steel strip electroplating process for Bondi pipes, specifically relating to the technical field of continuous electroplating of steel strips. Background technique [0002] Bondi tubes are mainly produced by copper-plated steel strips, and are widely used in automobile oil pipes, floor heating pipes, air-conditioning pipes, etc. Cyanide copper plating can obtain a dense, smooth, and well-bonded coating, so the continuous copper plating of steel strips adopts the cyanide copper plating process. Although the country has clearly eliminated the cyanide process, no alternative process has been found so far, and because Widely used in precision electronic instruments, precision instruments, aerospace and other fields, it can only be deferred and eliminated. Cyanide copper plating is the most widely used and earliest copper plating method. However, due to the high phosphorus content in cyanide copper plating, the bonding force of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D7/06C25D5/08C25D5/36C25D3/40C25D5/10C25D3/38
CPCC25D3/38C25D3/40C25D5/10C25D5/36C25D7/0685
Inventor 石磊宋文婷乔雪孙俊浩刘似玉刘科高
Owner SHANDONG JIANZHU UNIV
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