1. Incorrect plate cylinder size input or excessive wobbling, causing short circuit between cathode and anode and burning the anode.

Description: A short circuit between the cathode and anode leads to localized burning and damage of the platinized titanium anodes.

Root Cause: During production, incorrect specification input or failure of the limit sensor, as well as excessive wobbling of the plated part or the part falling into the plating tank, can cause a short circuit between the cathode and anode, resulting in damage to the platinized titanium anodes.

Corrective Actions:
a. Reduce operational errors.
b. Relocate the damaged anode to a less frequently used edge position.
c. Replace the damaged platinum-plated anode.

2. Direct removal of excess sulfuric acid in the chromium plating tank causes non-conductive barium sulfate to adhere to the anode, resulting in poor contact between the anode and the chromium plating solution and sparking. 

Description: Sparking and damage to the anode due to poor contact between deposits on the platinized titanium anodes surface and the solution.

Root Cause: When the sulfuric acid content in the chromium plating tank is high, barium carbonate is directly added to the tank to remove the excess sulfuric acid. The generated barium sulfate flows with the solution and deposits on the surface of the platinum-plated anode. Barium sulfate is non-conductive, and during electroplating, the anode discharges in contact with the solution. The barium sulfate deposited on the anode causes poor contact between the anode and the solution, leading to sparking and damaging the platinum-plated anode.

Corrective Actions:
a. Strictly prohibit directly adding barium carbonate to the plating tank to neutralize sulfuric acid.
b. Regularly clean solid impurities from the chromium plating tank bottom.