Electro-etching Micro-texture Masters

Electro-etching Micro-texture Masters

电解粗化获取微细纹理母板

type:recipe · level:advanced · material:copper · variant:electro-chemical · scale:jewelry · scale:decorative-object · equipment:power-supply · equipment:hand-tools · stage:etching · stage:forming

标签：电解蚀刻, 微纹理, 母板, 表面粗化

用硫酸铜电解液（CuSO4 200 g/L，电压 6–12 V，电流密度 0.5–1 A/dm²）对铜母板做 5–15 min 电解粗化，生成 10–50 μm 均匀点状微纹理，再过轧机转印——成品呈现细腻哑光缎面肌理，互补于强对比实物压印。时间长纹理深、电流大晶粒粗；组合两段电解（先 12 V/5 min 再 6 V/10 min）可得层次渐变。母板可电解退纹再生 3–5 次。

Electro-etch a copper master in copper sulfate (CuSO4 200 g/L, 6–12 V, 0.5–1 A/dm²) for 5–15 min to grow a uniform 10–50 μm stippled micro-texture, then roll it into sheet for a fine satin sheen—a quiet counterpoint to bold object imprints. Longer time = deeper; higher current = coarser grains; two-stage etching (12 V/5 min then 6 V/10 min) gives graded depth. Masters can be re-machined by electro-polishing 3–5 times.