Planishing Decisions in Museum Silver Conservation
博物馆银器修复中的打平决策
标签：银器修复, 打平, 最小干预, 变形矫正, 应力释放
对凹陷变形的 18 世纪银壶，博物馆修复遵循"最小干预"：先 X 光查验焊点与接缝，再以约 200 ℃ 热风局部加热释放应力（低于老焊料软化点），用尼龙头锤在铅或树脂衬砧上以 30% 重叠率轻打平复，累计不超过 3 轮；宁可保留 0.2 mm 残余起伏，也不抹去历史锤痕证据。
For dented 18th-century silver, conservation follows minimal intervention: X-ray the seams first, relieve stress with local hot air at about 200 °C—below the old solder's softening point—then lightly planish on a lead or resin-backed stake with a nylon-faced hammer at 30% overlap, no more than three rounds. Conservators accept 0.2 mm of residual waviness rather than erase historical hammer evidence. ---