The surface finish of the anode is directly determined by the condition of its titanium mesh substrate. Before plating, the substrate undergoes a deliberate roughening process to ensure superior adhesion of the platinum layer. Therefore, the non-shiny, matte appearance does not impact the anode's normal operation or performance in any way.
Platinized titanium anodes with overly large mesh openings or excessively thin titanium mesh are not considered high-quality products. This is because larger mesh reduces the anode's active surface area, while thinner titanium mesh decreases the conductive cross-sectional area, leading to inferior electrical conductivity. In contrast, our company exclusively uses high-quality pure titanium as the base material, ensuring a dense mesh pattern, guaranteed titanium thickness, and optimal conductive cross-section. This approach guarantees excellent conductive surface area and superior electrical performance in our platinized titanium anodes.
This is a normal phenomenon. In chromium plating baths, lead alloy anodes are present and generate lead dioxide (PbO₂) during the production process. The platinized titanium anodes surface may become coated with lead dioxide or other impurities, resulting in the black appearance; however, this does not affect its normal performance.
After a period of use of the platinized titanium anodes, the plating tank voltage becomes unstable or increases. At this point, the following should be checked:
① Is the contact between the titanium basket and the copper busbar adequate? Is the copper busbar overheating? If the busbar is hot, it indicates poor contact between the titanium basket and the copper busbar.
② Is the cathode contact proper? Is there significant overheating at the contact point between the cathode and the fixture? Severe overheating indicates poor cathode contact, which can also lead to a voltage increase.
During electroplating, the anode copper busbar should be regularly checked for overheating. If the busbar is hot, it indicates poor contact between the busbar and the titanium basket or platinized titanium anodes. Contaminants at the contact points should be promptly removed to ensure proper conductivity. If not cleaned in time, severe cases may cause arcing between the anode busbar and the titanium basket, resulting in damage to the titanium basket or platinized titanium anodes.
When the anode busbar is used in a chromium plating tank, escaping chromium mist during the plating process can corrode the copper busbar, forming an oxide layer on its surface and leading to poor conductivity.