ã€China Aluminum Industry Network】 1. Phenomenon/Description A noticeable color difference exists between the two ends of an aluminum profile, exceeding the acceptable color variation range. This inconsistency can affect the visual quality and marketability of the product. Simple Hot Tub,Backyard Hot Tubs,Holiday Let Massage Spa,Backyard Spa Bathtub SpaRelax Co., Ltd. , https://www.sparelaxoutdoorspa.com
2. Analysis of Reasons a) The conductive rod may not be conducting electricity properly, leading to uneven current distribution during the anodizing process. b) The cathode plate could be in poor condition or not evenly positioned, causing irregular film formation. c) Poor contact at the conductive seat may result in inconsistent coating thickness along the profile. d) Variations in the bath temperature can cause differences in the anodizing reaction across the surface. e) High local temperatures in the oven might lead to uneven drying or curing of the coating.
3. Improve Preventive Measures a) When removing the clip, ensure that the conductive rod is also removed from the membrane to prevent loosening or misalignment. b) Adjust the cathode plate to maintain even distribution and consistent electrical contact. c) Regularly polish the conductive base to ensure good conductivity and reduce resistance. d) Optimize the cycle time and increase the circulation rate of the electrolyte to maintain uniform conditions. e) Check and adjust the oven door to ensure proper sealing and even heat distribution throughout the drying or curing process.
By addressing these factors, manufacturers can significantly reduce the occurrence of color inconsistencies and improve the overall quality of anodized aluminum profiles.