1. Phenomenon/description
The color difference at both ends of the aluminum profile is beyond the control color difference range.
2. Cause analysis
a) Conductive rods are poorly conductive
b) Poor conductivity of the cathode plate
c) Poor contact of the conductive seat, resulting in uneven film thickness
d) The bath temperature is uneven
e) The local temperature of the oven is too high
3. Improve preventive measures
a) When clamping, the conductive rod is cleaned to ensure that it does not loosen
b) Adjust the cathode plate so that it is evenly distributed
c) Polishing the conductive seat
d) Improve circulation and increase the amount of circulation
e) Adjust the oven vent.
