Japanese Fuki-iro Flame-finishing Tradition
日本"吹色"火焰着色工艺传统
标签：日本, 吹色, 火焰着色, 流派, 茶器
新潟燕三条的铜器工房传承"吹色"（fuki-iro）火焰工艺：锤揲后的紫铜壶身以丙烷软火焰距表面 8–10 cm 螺旋走焰，240–280 °C 区间得到金茶色（干涉膜约 8–12 nm），升至 320 °C 转紫褐色。老师傅凭火色判温误差 ±10 °C，徒弟须在 200 只废坯上练手。吹色膜薄而透明，与后续 0.3 vol% 硫化钾"水色"叠加，可得日本茶器经典的"古金"色调。
Tsubame-Sanjo copper workshops keep the fuki-iro (blown-color) flame tradition: after hammering, a soft propane flame 8–10 cm from the surface sweeps spirally — 240–280 °C gives golden tea (~8–12 nm oxide), rising to 320 °C for purple-brown. Masters read temperature from flame color within ±10 °C; apprentices burn through 200 practice bodies first. The thin transparent film stacks with a 0.3 vol% sulfide "water color" for the classic antique-gold of tea vessels. ---