Deep Drawing Steps for a Brass Nameplate

Deep Drawing Steps for a Brass Nameplate

黄铜铭牌深拉深操作步骤

type:tutorial · level:intermediate · material:brass · scale:decorative-object · equipment:hand-tools · stage:patternmaking · stage:finishing

标签：拉深比, 压边力, 多次拉深, 退火

①落料制得圆形坯 ②首次拉深取拉深比 m≈0.55 ③压边力调至刚好不起皱 ④若总变形大则中间退火（600–650 ℃ 保护气氛）再二次拉深 ⑤切边到尺寸 ⑥抛光封护。每次拉深后测量壁厚，减薄超 15% 需降低单道次变形量。

① blank a round disc ② first draw at draw ratio m≈0.55 ③ set blankholder force just enough to avoid wrinkles ④ if total reduction is large, anneal (600–650 ℃ in protective atmosphere) and draw again ⑤ trim to size ⑥ polish and seal. Measure wall thickness after each draw; if thinning exceeds 15%, reduce per-pass reduction. ---