Case: Architectural Copper Cladding Gradient
案例：建筑铜幕墙蓝绿渐变着色
标签：幕墙, 渐变, 大面积, 批量一致
某铜幕墙采用分段挂具阳极电解：氯化铵 20 g/L + 盐酸 5 mL/L 电解液，2.5 V、分段控时 20–120 秒，由下而上时间递增形成蓝绿渐变。难点是 2000 块板色差控制——用中央电源均流分配、每板挂同一电流密度（1.5 A/dm²），并留样比对，色差 ΔE<3。
A copper curtain wall used sectional anode racks: 20 g/L ammonium chloride + 5 mL/L HCl, 2.5 V, staged 20–120 s bottom-to-top for a blue-green gradient. The challenge was 2000 panels' consistency—central current-sharing supply held uniform 1.5 A/dm² per panel, with shade samples kept for ΔE<3 matching. ---