Continuous electroplating method for multilayer coating
1. An electroplating method is characterized in that: it includes:
a cleaning step, cleaning the material belt;
electroplating, namely electroplating the material belt, and electroplating the material belt in an electroplating bath through an electroplating bath;
also comprises an intermediate cleaning step and an intermediate drying step; a cleaning tank and a dry load are arranged behind each electroplating tank.
2. A plating method according to claim 1, said cleaning step comprising: a step of oil removal and a step of descaling;
when the oil removing step is carried out, the material belt passes through an oil removing groove, cleaning agents are contained in the oil removing groove, the oil removing groove is connected with an ultrasonic generator, and the terminal material belt stays in the oil removing groove for 10-20 s; when the descaling step is carried out, the material belt passes through a cleaning tank, clear water is contained in the cleaning tank, and the cleaning tank is connected with an ultrasonic generator; the terminal material belt stays in the cleaning tank for 10s-20 s.
3. An electroplating method according to claim 2, wherein the cleaning agent comprises: oleic acid, diethanolamine, coconut oil diethanolamide, disodium hydrogen phosphate and alkylolamide phosphate; the concentration of oleic acid is 50-100 g/L, the concentration of diethanolamine is 200-300 g/L, the concentration of coconut oil diethanolamide is 70-80 g/L, the concentration of alkylolamide phosphate is 100-120 g/L, and the concentration of disodium hydrogen phosphate is 100-130 g/L.
4. An electroplating method according to claim 3, further comprising, between the cleaning step and the electroplating step: an intermediate drying step;
the intermediate drying step comprises: branch flowing and branch drying steps; after the terminal material belt comes out of the electroplating bath, the terminal material belt firstly enters a draining area and stays in the draining area for 30-60 seconds; then the terminal strip enters an air drying area, at least 1 pair of oppositely arranged air injection devices are arranged in the air drying area, the air injection devices are inclined to inject air to the terminal strip, and the terminal strip stays in the air drying area for 10-20 seconds.
5. An electroplating method according to claim 4, wherein the intermediate cleaning step is preceded by a recovery step; a recovery tank is arranged at the rear part of the immersion plating tank, electroplating liquid attached to the terminal material belt falls into the recovery tank, and the terminal material belt stays above the recovery tank for 5-10 seconds.
6. An electroplating method according to claim 5, wherein during the intermediate cleaning step, the terminal strip enters a cleaning tank, the cleaning tank contains clean water, and the terminal strip stays in the cleaning tank for 5-10 seconds.
Background
At present, in order to improve the performance of the interface terminal, a plurality of electroplated layers are often required to be electroplated on the surface of the interface terminal, and a continuous electroplating mode is generally adopted when the plurality of electroplated layers are electroplated. When continuous electroplating is carried out, a material belt mode is generally adopted, the material belt sequentially passes through a plurality of electroplating baths, and when the material belt passes through each electroplating bath, terminals on the material belt are subjected to primary electroplating; in practical operation, during the continuous electroplating process, the material belt may carry the electroplating solution in the previous electroplating tank into the next electroplating tank, thereby causing the next electroplating tank to be polluted, and the electroplating effect is poor or the electroplating fails. If the speed reduction mode is adopted, the material belt is pulled to move forward, so that when the material belt enters the next electroplating bath, the surface is not attached with electroplating solution, and the production speed is greatly reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an electroplating method for continuous electroplating of a multilayer coating, which can effectively solve the problem of electroplating solution adhesion and does not influence the production speed.
An electroplating method, comprising:
a cleaning step, cleaning the material belt;
electroplating, namely electroplating the material belt, and electroplating the material belt in an electroplating bath through an electroplating bath;
also comprises an intermediate cleaning step and an intermediate drying step; a cleaning tank and a dry load are arranged behind each electroplating tank.
Further, the washing step includes: a step of oil removal and a step of descaling;
when the oil removing step is carried out, the material belt passes through an oil removing groove, cleaning agents are contained in the oil removing groove, the oil removing groove is connected with an ultrasonic generator, and the terminal material belt stays in the oil removing groove for 10-20 s; when the descaling step is carried out, the material belt passes through a cleaning tank, clear water is contained in the cleaning tank, and the cleaning tank is connected with an ultrasonic generator; the terminal material belt stays in the cleaning tank for 10s-20 s.
Further, the cleaning agent includes: oleic acid, diethanolamine, coconut oil diethanolamide, disodium hydrogen phosphate and alkylolamide phosphate; the concentration of oleic acid is 50-100 g/L, the concentration of diethanolamine is 200-300 g/L, the concentration of coconut oil diethanolamide is 70-80 g/L, the concentration of alkylolamide phosphate is 100-120 g/L, and the concentration of disodium hydrogen phosphate is 100-130 g/L.
Further, the following steps are also arranged between the cleaning step and the electroplating step: an intermediate drying step;
the intermediate drying step comprises: branch flowing and branch drying steps; after the terminal material belt comes out of the electroplating bath, the terminal material belt firstly enters a draining area and stays in the draining area for 30-60 seconds; then the terminal strip enters an air drying area, at least 1 pair of oppositely arranged air injection devices are arranged in the air drying area, the air injection devices are inclined to inject air to the terminal strip, and the terminal strip stays in the air drying area for 10-20 seconds.
Furthermore, a recycling step is also arranged before the intermediate cleaning step; a recovery tank is arranged at the rear part of the immersion plating tank, electroplating liquid attached to the terminal material belt falls into the recovery tank, and the terminal material belt stays above the recovery tank for 5-10 seconds.
Further, when the intermediate cleaning step is performed, the terminal material belt enters the cleaning groove, clean water is filled in the cleaning groove, and the terminal material belt stays in the cleaning groove for 5-10 seconds.
The invention has the beneficial effects that: according to the invention, through the intermediate cleaning step and the intermediate drying step, the attached electroplating solution can be clear after the terminal material belt is electroplated, and the electroplating bath of the next procedure is prevented from being polluted.
Detailed Description
The invention is described in detail below.
Example 1: an electroplating method, comprising:
a cleaning step, cleaning the material belt;
electroplating, namely electroplating the material belt, and electroplating the material belt in an electroplating bath through an electroplating bath;
also comprises an intermediate cleaning step and an intermediate drying step; a cleaning tank and a dry load are arranged behind each electroplating tank.
When the technical scheme works, different plating layers are electroplated on the terminal by arranging a plurality of electroplating baths; after electroplating, the terminal enters a cleaning tank for cleaning, and is dried by a drying device after cleaning.
Further, the washing step includes: a step of oil removal and a step of descaling;
when the oil removing step is carried out, the material belt passes through an oil removing groove, cleaning agents are contained in the oil removing groove, the oil removing groove is connected with an ultrasonic generator, and the terminal material belt stays in the oil removing groove for 10-20 s; when the descaling step is carried out, the material belt passes through a cleaning tank, clear water is contained in the cleaning tank, and the cleaning tank is connected with an ultrasonic generator; the terminal material belt stays in the cleaning tank for 10s-20 s.
In the production process of the terminal material belt, oil dirt and dirt are inevitably adhered to the terminal material belt and need to be removed, so that the technical scheme is provided with an oil removing step and a descaling step.
Further, the cleaning agent includes: oleic acid, diethanolamine, coconut oil diethanolamide, disodium hydrogen phosphate and alkylolamide phosphate; the concentration of oleic acid is 50-100 g/L, the concentration of diethanolamine is 200-300 g/L, the concentration of coconut oil diethanolamide is 70-80 g/L, the concentration of alkylolamide phosphate is 100-120 g/L, and the concentration of disodium hydrogen phosphate is 100-130 g/L.
The grease on the surface of the terminal material belt is mainly fatty acid, and needs to be dissolved during cleaning, so that the terminal material belt needs to be matched with a detergent in a targeted manner.
Further, the following steps are also arranged between the cleaning step and the electroplating step: an intermediate drying step;
the intermediate drying step comprises: branch flowing and branch drying steps; after the terminal material belt comes out of the electroplating bath, the terminal material belt firstly enters a draining area and stays in the draining area for 30-60 seconds; then the terminal strip enters an air drying area, at least 1 pair of oppositely arranged air injection devices are arranged in the air drying area, the air injection devices are inclined to inject air to the terminal strip, and the terminal strip stays in the air drying area for 10-20 seconds.
After the terminal material belt is cleaned by clear water, clear water can adhere to the surface of the terminal material belt, and through the arrangement of a draining step for reducing consumption, most of the adhered clear water runs off in a draining area; and then air-dried in an air-drying area.
Furthermore, a recycling step is also arranged before the intermediate cleaning step; a recovery tank is arranged at the rear part of the immersion plating tank, electroplating liquid attached to the terminal material belt falls into the recovery tank, and the terminal material belt stays above the recovery tank for 5-10 seconds.
If come out the back from the dip-plating groove, the terminal material area directly gets into the washing tank, though can obtain the washing, but also can bring into more plating solution to cause the clear water in the washing tank to need in time to change.
Further, when the intermediate cleaning step is performed, the terminal material belt enters the cleaning groove, clean water is filled in the cleaning groove, and the terminal material belt stays in the cleaning groove for 5-10 seconds.
Through setting up the washing tank, the terminal material passes from the washing tank to clear away the adnexed plating solution of terminal material area surface. The left side and the right side of the electroplating bath are respectively provided with a channel matched with the width of the terminal material belt, the terminal material belt penetrates through the lower end of the channel, and clean water in the electroplating bath is continuously pumped back through a water pump after flowing out for circulating supplement.
The residence time in the technical scheme refers to the time for the material belt to pass through.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, there may be variations in the specific embodiments and applications according to the inventive concept, and the present disclosure should not be construed as limiting the invention.
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