Enamel Selection & Firing Temp

釉料选择与烧制温度

type:recipe · level:intermediate · material:copper · scale:jewellery · scale:decorative-object · stage:patina

标签：釉料, 温度, 配方, 系数

选釉看"热膨胀系数"（需与铜胎匹配，否则开片/剥落）与"熔融温度"。铜用釉多为 750–850℃ 中温釉；透明釉烧温略高、不透光略低。配方体系：铅基釉（易熔、光亮，但含铅需防护）/ 无铅釉（环保、略难熔）。混色：干釉粉按比例混合即得新色；液体釉用色浆调配。记录每批釉的窑温曲线是复现关键。

Choose by thermal expansion (must match copper or it cracks/flakes) and fusion temp. Copper enamels are mostly 750–850℃ mid-temp; transparent slightly higher, opaque slightly lower. Systems: lead-based (easy, glossy, needs PPE) / lead-free (eco, a bit harder). Mix colors by blending dry powders; liquids by color paste. Logging each batch's kiln curve is the key to repeatability. ---