Hot-pack Acceleration
热敷法加速
标签：热敷, 加速, 大件, 教程
热敷法（hot-pack）适合不便浸泡的大件：将工件加热至手不可久触（约 60–90℃），用海绵或布蘸硫化液反复擦拭，热面反应极快，色深且附着力强。要点：热而不烫（防溶液剧烈挥发）、勤擦保持均匀、达色即冷水定色。**严禁在密闭空间操作**——受热与酸性条件会释放硫化氢（H₂S），须强力通风。
Hot-pack suits pieces too large to dip: heat the work to "too hot to hold" (~60–90℃) and wipe repeatedly with sulfide solution on a sponge or cloth; the warm surface reacts fast, giving a deep, adherent color. Keys: warm not scalding (avoid violent evaporation), wipe evenly, set in cold water at target. **Never in an enclosed space** — heat and acid release hydrogen sulfide (H₂S); ventilate strongly. ---