Decorative Copper Plating for Consumer Electronics
3C 电子产品的装饰性镀铜与着色
标签：电子产品, 滚镀, 在线对色, 仿金, 量产管理
音箱网罩、耳机外壳与智能手表底壳大量使用黄铜/铜合金装饰件：先镀镍 5–8 μm 打底防铜扩散，再闪镀 0.1–0.3 μm 装饰铜或仿金，最后 PVD 罩致密耐磨膜。月产 10 万件规模采用滚镀与挂镀混合线，着色一致性靠在线恒电位控制与每 2 h 试片对色（ΔE≤1）。某独立音响品牌黄铜外壳经 500 h 中性盐雾与 500 次酒精擦拭无变色起泡，成为"工业品级电解着色"的量产样板。
Speaker grilles, earphone shells and smartwatch backs use decorative brass/copper parts: nickel strike 5–8 μm against copper diffusion, flash 0.1–0.3 μm decorative copper or imitation gold, then a dense PVD wear topcoat. At 100,000 pieces/month, mixed barrel-and-rack lines keep color consistent through inline potentiostatic control and 2-hourly coupon checks (ΔE≤1). An independent audio brand's brass shells passed 500 h neutral salt spray and 500 alcohol wipes—production-grade electro-coloring benchmarked.