Penyaduran elektrik suhu dan pH value of elektrik pemanasan tiub

Penyaduran elektrik suhu dan pH value of elektrik pemanasan tiub

② Temperature and pH value: The selection of temperature and pH during electrolytic treatment should also be based on the temperature and pH range where impurities have a significant negative impact during electroplating. For example, copper impurities and NO3- impurities in nickel plating solution have a significant impact when the pH is low. Therefore, when electrolytic removal of copper impurities and NO3- impurities in nickel plating solution, low pH should be selected for electrolysis. Under such conditions, the removal rate of impurities is faster. During the electrolysis process, some impurities will decompose into gases (such as NO3- reduced to nitrogen oxides or ammonia on the cathode, Cl - oxidized to Cl2 on the anode, etc.). Therefore, high-temperature electrolysis should be used to volatilize and escape the gas formed during the electrolysis process (the solubility of gas in the solution generally decreases with increasing temperature), in order to prevent it from dissolving in water and contaminating the plating solution again.

Menurut kepada the general rule, as the temperature of the plating solution increases, the rate of electrolytic removal of impurities also increases. Therefore, when heating has no effect on the main components of the plating solution, electrolytic treatment should be carried out under heating. But the best temperature to control is through small experiments.

③ Stirring: Since electrolytic treatment relies on the reaction of impurities on the surface of the cathode (or anode) to remove them, conditions should be created to allow sufficient contact between impurities and the electrode surface. Stirring can accelerate the movement of impurities and increase their chances of contact with the electrode. Therefore, in order to improve the treatment effect, the plating solution should be kacau during electrolysis. According to foreign sources, stirring the plating solution with ultrasonic waves during electrolytic treatment can improve the treatment effect. Therefore, for units with conditions, the stirring of the plating solution should be accelerated as much as possible during electrolytic treatment.

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