Current products are more suitable for smaller plating.

Brightener: DX-3, DX-4 belongs to pure organic brightener, no lead. And which are peculiar to the anode active ingredients added, long-term use, can be increased without troubles carbonate. DX-3 is a high area brightener cuprous cyanide in production and have a similar effect, it makes the coating reddish color. DX-4 is a low area brightener and sodium cyanide in production have a similar effect, too many white color. DX-3: DX-4 normal 1:4 consumption, normally 50-70 minutes plating can reach nearly mirror light, lay the foundation for subsequent plating. It should be noted that the DX-3 and DX-4 bath composition according to the proportion of consumption adjustment; when the copper content is high, then the bath DX-4 consume more, sometimes DX-3 is not consumed. When the bath copper content is low, the free cyanide is high, then the DX-3 consume more.
Alkaline copper brightener DX-5 also belong to the pure organic brightener, no lead, but a single additional, also can achieve near-specular light. Current products are more suitable for smaller plating.
Temperature: Average 40-55 ℃. Temperature is too high the workshop environment is poor, waste of energy, accelerated decomposition of sodium cyanide. Temperature is too low, the speed is slow, inefficient and poor brightness.
Then anodized: Zinc alloy plating barrel plating requires fast, dense coating. Anodic dissolution of the normal requirements, thus requiring adequate anode area, not directly linked to the copper on the anode, but should be cut into small pieces into the blue titanium copper to increase the anode area.
Simply fill in peacetime Molybdenum plate of sodium cyanide, cuprous cyanide is supplemented by anodic dissolution. Copper is supplemented by anodic dissolution plating bath, dense coating, usually by complement cuprous cyanide copper plating solution is maintained not dense coating, plating long time, but the high cost of plating.
Practice has proved that the normal bath anodic dissolution of carbonate is not exceeded. Because the normal anodic dissolution of carbonate formation few opportunities, but also to bring out Tungsten eletrode long-term consumption of the bath.
Copper anode dissolution of the normal color is slightly darker red. Free cyanide is too bright too. Syrup blue, green hair anode is free cyanide is too low. Gray hair indicates carbonates too high. Black coating when there are likely to have lead impurity spots, brittleness.
Practice has proved that cyanide copper plating barrel plating anodes anode bags should not be used.
Drum should be designed to be generally smaller in diameter, long, so that uniform coating, plating speed.
Besides the general requirements thicker conductive copper because zinc alloy plating current is relatively large.
Of course, a beautiful barrel plating products also involves many aspects of the problem. These are only the author of the alkaline copper-plated zinc alloy roll a little experience, experts treatise.