Laser Scanning for Flatness-guided Planishing
激光扫描检测平面度辅助打平
标签：激光扫描, 平面度, 偏差云图, 定点补锤, 质检
大型平面件打平 3–4 轮后，用手持激光扫描仪（精度 ±0.05 mm）扫描一次，生成彩色偏差云图，直观显示 0.2 mm 以上的高低起伏，替代直尺塞尺检测；据云图定点补锤，可减少 30–50% 的盲目走锤。扫描前铜面喷薄层显像剂（<50 μm）防反光，完成后溶剂擦除即可，不影响后续抛光与做旧。
After 3–4 planishing passes on large flats, scan with a handheld laser scanner (±0.05 mm) to get a colour deviation map showing highs/lows over 0.2 mm—replacing straightedge-and-feeler checks. Touch-hammer only the mapped spots, cutting blind passes by 30–50%. Spray a thin developing agent (<50 μm) first to kill glare; wipe off with solvent afterwards so subsequent polishing or patina is unaffected. ---