Cold Enamel on Coined Medals
冷珐琅与压印章的结合工艺
标签：冷珐琅, 环氧, 上色, 纪念章
冷珐琅（双组分环氧色胶）已成为压印章上色主流：凸部贴转印胶带保护后用针筒灌胶入凹，气泡以牙签引出，50 ℃ 烘 2 h 固化；固化后用 600 目砂纸沿凸面水平打磨，露出金属高光再抛光。配色按印刷四色混合，但铜底会透色，深色区须先点一层白底胶。每枚章耗胶 0.1–0.3 g，适合 1 000 枚以内的多色小批量，替代 800 ℃ 烧制烤瓷珐琅，设备门槛几乎为零。
Cold enamel (two-part epoxy colour) is now the default for coined medals: tape off the relief, syringe colour into the recesses, tease out bubbles with a toothpick and cure 2 h at 50 °C. Sand level across the relief with 600 grit to reveal the metal highlights, then polish. Mix colours like printing inks—but copper shows through, so lay a white base dot in dark zones. At 0.1–0.3 g per medal it suits multi-colour runs under 1 000 pieces, replacing 800 °C fired champlevé with almost no equipment barrier.