Annealing Cadence
退火与回火节奏
标签：退火, 加工硬化, 节奏
浮雕錾刻中金属快速加工硬化、变脆，必须频繁退火：紫铜约 400–500℃、银约 500–600℃，见色即退火（铜暗红、银微红）。退火后用铜丝绒/稀酸去氧化皮再继续。节奏：每顶出一轮→退火→清皮→下一轮。跳过退火会直接顶裂。
Repoussé/chasing work-hardens metal fast; anneal often: copper ~400–500℃, silver ~500–600℃, anneal at first color (copper dull red, silver faint red). After, clean scale with steel wool/dilute acid, then continue. Cadence: one raising round → anneal → descale → next. Skip annealing and it cracks. ---