Wall Gauging & Balancing for Spun Parts
旋压件壁厚检测与动平衡校正
标签：检测, 超声测厚, 动平衡, 圆跳动, 质量控制
旋压件出厂前三项检测：①壁厚——超声测厚沿 0°/90°/180°/270° 四条母线逐段测，灯具壳体要求壁厚差 ≤0.1 mm，鼓壳 ≤0.05 mm；②几何——芯轴上打表查口缘圆跳动 ≤0.3 mm；③动平衡——旋转件（鼓壳、转灯罩）按 G6.3 级校验，配重用同材质铜片氩弧焊且单点 ≤5 g，避免破坏音色与外观。检测数据贴标签随件流转，返修件二次旋压精整后必须复测壁厚，防止越修越薄。
Three pre-shipment checks for spun parts: (1) wall thickness by ultrasonics along 0°/90°/180°/270° meridians — lighting shells within 0.1 mm variation, drum shells 0.05 mm; (2) geometry — check rim runout ≤0.3 mm on a mandrel with a dial gauge; (3) dynamic balance — rotating parts (drum shells, rotating shades) to grade G6.3, corrected with same-alloy copper tabs TIG-welded, ≤5 g per point to preserve tone and looks. Tag readings with each part; any re-spun part must be re-gauged for wall so thinning never compounds.