Reproduction Principle and Daily Maintenance of Tank Fluid

The replication system is a special processing method which uses the principle of electrolytic deposition of metals to accurately replicate some complex or special shaped workpieces. The basic principle of replication is that the prototype made according to the required shape is used as the cathode, and the replica material (nickel) is used as the anode. It is put into the same metal salt (nickel sulfamate) solution as the anode material. Through direct current, under the action of electrolysis, the metal replica layer is gradually deposited on the surface of the prototype to achieve the required thickness. The metal replicas corresponding to the shape of the original die can be obtained by separating the replica layer from the original die after the degree of is removed from the solution.

The replication system can be briefly described as the movement and transfer of nickel ions from the anode to the cathode, and the precipitation of nickel ions from the cathode. The ion transfer medium is the aqueous solution of nickel salt (nickel sulfamate). The thickness of nickel plate can be controlled by adjusting the electric field, current and time. Check PH value, specific gravity, tank water level, and nickel ball volume in each shift.

The PH value of the tank fluid should always be kept in the range of 3.8-5.4. Under normal operation, the PH value will gradually increase with the progress of replication. When the PH value reaches 5.4, aminosulfonic acid should be added to the bath in time to avoid its further increase.

The concentration of nickel sulfamate can be determined by measuring the specific gravity of the tank liquid, which ranges from 25 deg. Baume to 30 deg. During the replication process, the specific gravity of the tank liquid will increase due to the evaporation of the tank liquid. Attention should be paid to keeping the solution in the tank at the prescribed level so as to ensure the content of nickel. At the same time, keeping the height of the tank liquid, too low level of water pump will bring air into the tank liquid, easy to cause sand holes in the duplicate layout.

Check the anode titanium baskets regularly to see if new nickel cakes need to be added. Clean the nickel cakes and titanium baskets regularly according to the actual working conditions. Filtration cotton core about 1-2 months or depending on the blockage situation. See if the flow of replica fluid is normal, if the flow rate is slower than the original, it means that the filter element needs to be replaced.

When necessary, the replica solution needs to be treated with activated carbon, which may remove organic impurities from the tank solution. In the absence of production, activated carbon will be filtered for more than 12 hours. Activated carbon filtration method: take out the filter cotton core and replace it with activated carbon, and replace the new filter cotton core after completion.

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