Desain dan Simulasi Sistem Anodizing Aluminium dengan Kontrol Arus Konstan Terintegrasi

Abstract

Conventional anodizing of Aluminum 6061 typically uses manually regulated current, which is prone to fluctuation and results in non-uniform oxide layer formation. This study designs an integrated constant-current-controlled anodizing system for Aluminum 6061 using SolidWorks and analyzes Current Density distribution and oxide layer growth through COMSOL Multiphysics 5.6 simulation. The method used is quantitative design research based on numerical simulation, comprising numerical calculation, three-dimensional design, and electro-thermal simulation. The system was designed with a 28.52-liter HDPE anodizing bath, a dual lead-cathode configuration flanking the Aluminum 6061 anode at a 100 mm gap, and a galvanostatic DC power supply of 4 Ampere/12 Volt monitored by an ACS712 sensor. Numerical calculation indicated an oxide layer mass of 1.0145 grams with a power of 48 Watts. Transient simulation showed linear oxide layer growth over time, reaching 8.98 µm at the 20th minute and 17.97 µm at the 40th minute, within the Sulfuric Acid Anodizing standard range (15–25 µm). The system proved able to maintain process stability, making it feasible for laboratory-scale implementation.