CN103938239A

CN103938239A - Steel band continuous copper plating I

Info

Publication number: CN103938239A
Application number: CN201410194966.3A
Authority: CN
Inventors: 石磊; 徐勇; 魏萌; 刘科高; 王胜楠; 宋文婷
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2014-05-11
Filing date: 2014-05-11
Publication date: 2014-07-23

Abstract

A steel strip continuous copper plating I mainly includes a pretreatment process and an electroplating copper process. The pretreatment mainly includes ultrasonic degreasing, electrolytic degreasing, water washing, activation, water washing, etc.; the electroplating process mainly includes copper plating, recycling, water washing, etc. During the electroplating production process, with the operation of the steel strip, the high air pressure generated by the air pump is used to atomize the deionized water in the high-pressure nozzle and clean the steel strip. After the deionized water is atomized, a very small amount of water is used to The steel strip is cleaned, so the high-concentration plating solution flows into the recovery tank. Using the high level difference between the empty tank and the plating solution mother tank, the plating solution flows into the mother tank, and the plating solution is transported to the plating tank by a filter pump , so that the plating solution has been recycled and can prevent pollution. At the same time, various impurities and dirt attached to the surface of the steel strip will be cleaned and washed to clean the surface of the steel strip, thereby ensuring the quality of the steel strip coating. The qualified rate of copper-plated steel strip is improved.

Description

A kind of continuous copper-plating of steel strip I

Technical field

The present invention relates to the technical field of alkaline copper plating, specifically a kind of continuous copper-plating of steel strip.

Background technology

Aborning, when steel band carries out copperizing continuously, generally adopt cyanide electroplating, steel band can be taken plating solution out of from a coating bath enters the process of next coating bath, and is dropped in outside coating bath, can cause like this waste of plating solution, because plating solution is poisonous, also can pollute, be unfavorable for cleaner production.Steel strip surface can be adhered to all kinds of impurity and dirt simultaneously, if all kinds of impurity and dirt are brought into next operation, can pollute plating solution and affect quality of coating, will cause the appearance of substandard product.Therefore, need to clean steel band.Cleaning steel band can adopt the mode of spray, and atomizing spray rinse water utilizes the high-order official post plating solution between room groove and the female groove of plating solution to flow into the female groove of plating solution, can save the conveying that certain resource removes to carry out plating solution and waste water like this.Original continuous steel strip electroplating technology groove is dovetail groove, only has a steel band on production line, and cost is high, and output is general.And adopt on the production line of isosceles trapezoid technology groove, can produce by two steel bands simultaneously, be equivalent to the production line output of two dovetail grooves, output increasing doubles, and cost approximately reduces by 1/3rd.

Summary of the invention

A continuous copper-plating of steel strip I, mainly comprises pretreatment process and electro-coppering process, and pre-treatment mainly comprises ultrasonic wave oil removing, electrolytic degreasing, washing, activation, washing etc.; Electroplating process mainly comprises copper facing, recovery, washing etc.In continuous copper-plating of steel strip, in coating bath, plating solution carries out circulating filtration by double female groove, and the structure of double female groove is comprised of plating tank, the female groove of plating solution, filtration pump, room groove, and specifically 6 every two of coating baths are one group, and plating tank and room groove are above the female groove of plating solution; The volume of the female groove of plating solution is the twice of plating tank volume; The power of pump is identical, and the volume of pump (filter) conveying per hour (filtration) plating solution is about 10 times of coating bath (the female groove of plating solution) volume; Steel band exit end at continuous copper-plating of steel strip is provided with the long room groove of about 100mm, and adopts the mode of atomizing spray to reclaim the remaining plating solution on steel band; At steel band exit end, the upper end of steel band both sides is three high-pressure nozzles that 45° angle is arranged from top to bottom; And be that pure water below 0.5us carries out atomizing spray by specific conductivity; Water conservancy after atomizing spray cleans flows into the female groove of plating solution with the high potential difference of room groove and the female groove of plating solution, and utilizes filtration pump that plating solution is transmitted back to coating bath.

A kind of continuous copper-plating of steel strip I provided by the invention, mainly comprises pretreatment process and electro-coppering process.Described pretreatment process comprises hot water wash, oil removing, washing and activation, water washing process.Wherein oil removal treatment adopts ultrasonic wave oil removing to combine with the male-female utmost point mode that oil removing mutually combines.

1. hot water wash adopts the hot water of 70～80 ℃ to clean 20～30s.

2. oil removal treatment comprises ultrasonic wave oil removing and electrolytic degreasing, and electrolytic degreasing is male-female utmost point associating oil removing.First, carry out electrochemical deoiling, the time is 1～3min, then carries out electrolytic degreasing, during electrolytic degreasing, and first negative electrode oil removing 1min, then anode oil removing 15s.

Described ultrasonic wave oil removing, ultrasonic wave oil-removing cleaning agent, concentration is 5%, and temperature is 40 ~ 50 ° of C, and ultrasonic frequency is 25 kHz.

3. in activation treatment, the etchant in activation solution is hydrochloric acid, concentration 20g/L, and solution temperature is 35 ± 5 ℃, cathode current density is 7～10A/dm ², erosion time is 20～30s.

4. all to adopt concentration be low chlorine ion water or the pure water below 600ppm to the washing after the washing after oil removing and activation, cleans, and cleaning water temperature is 30～40 ℃.

5. according to invention, provide a kind of continuous copper-plating of steel strip I, wherein electroplating process is copperizing continuously process.Copper-plated plating solution is mainly comprised of cuprous cyanide, sodium cyanide and sodium hydroxide, and during plating, cathode current density is 0.2～2A/dm ², temperature is 55～65 ℃, the thickness of coating is controlled by electric current and tape handler belt speed.It is the pure water below 0.5us that cleaning washing in each process adopts concentration.

figure of description

Fig. 1 is a kind of schematic diagram of continuous copper-plating of steel strip I.

Fig. 2 is a kind of vertical view of continuous copper-plating of steel strip I.

In figure, the 1st, air pump, the 2nd, deionized water, the 3rd, high-pressure nozzle, the 4th, the female groove of plating solution, the 5th, filtration pump, the 6th, plating tank, the 7th, room groove, the 8th, viewing window.

Embodiment

Embodiment 1

The structure of double female groove is comprised of plating tank, the female groove of plating solution, filtration pump, room groove, and specifically 6 every two of coating baths are one group, and plating tank and room groove are above the female groove of plating solution; The volume of the female groove of plating solution is the twice of plating tank volume; The power of pump is identical, and the volume of pump (filter) conveying per hour (filtration) plating solution is about 10 times of coating bath (the female groove of plating solution) volume; Steel band exit end at continuous copper-plating of steel strip is provided with the long room groove of about 100mm, and adopts the mode of atomizing spray to reclaim the remaining plating solution on steel band; At steel band exit end, the upper end of steel band both sides is three high-pressure nozzles that 45° angle is arranged from top to bottom; And be that pure water below 0.5us carries out atomizing spray by specific conductivity; Water conservancy after atomizing spray cleaning flows into the female groove of plating solution with the high potential difference of room groove and female groove, and utilizes filtration pump that plating solution is transmitted back to coating bath.In plating production process, operation along with steel band, the high atmospheric pressure that utilizes air pump to produce makes the deionized water atomization in high-pressure nozzle and steel band is cleaned, after deionized water atomization, can to steel band, clean with the water of minute quantity, so after cleaning for high density plating solution and flow into accumulator tank, utilize the high potential difference between the female groove of room groove and plating solution, plating solution flows into the female groove of plating solution, and utilize filtration pump that plating solution is transported to coating bath, thereby make plating solution obtain recycling, and can prevent from polluting, all kinds of impurity and the dirt that also steel strip surface can be adhered to clean and wash away simultaneously, make steel strip surface clean, thereby guaranteed the quality of steel band coating, improved the qualification rate of copper facing steel band.

Claims

1. A continuous copper plating on a steel strip, mainly including a pretreatment process and an electroplating copper process. The pretreatment mainly includes ultrasonic degreasing, electrolytic degreasing, water washing, activation, water washing, etc.; the electroplating process mainly includes copper plating, recycling, water washing, etc. , which is characterized in that: in the continuous copper plating of the steel strip, the plating solution in the plating tank is circulated and filtered through the double female groove; at the exit end of the steel strip of the continuous copper plating of the steel strip, there is an empty slot with a length of about 100 mm, and the atomization spray is used Clean the steel strip and recycle the residual plating solution;

① The structure of the double mother tank is composed of electroplating tank, plating solution mother tank, filter pump and empty tank. The 6 plating tanks form a group of two, and the electroplating tank and the empty tank are above the plating solution mother tank;

②The volume of the plating solution mother tank is twice the volume of the electroplating tank; the power of the pump is the same, and the volume of the plating solution delivered (filtered) by the pump (filter) per hour is about 10 times the volume of the plating tank (plating solution mother tank);

③At the outlet end of the steel strip, three high-pressure nozzles are arranged at an angle of 45° from top to bottom on both sides of the steel strip; and spray with pure water with a conductivity of less than 0.5us;

④ After copper plating, the residual liquid of the plating solution is atomized and sprayed, and the water after cleaning is flowed into the main tank of the plating solution by using the height difference between the empty tank and the main tank of the plating solution, and the plating solution is transported back to the plating tank by a filter pump.