Case: Busbar Progressive Die Stamping
案例：充电桩铜排级进模高速冲压
标签：铜排, 级进模, 高速冲压, 充电桩
新能源充电桩铜排（T2 镀锡铜带，3×40 mm 截面）用八工位级进模在 60 t 高速冲床上以 120 次/min 连续生产：冲孔→压筋→折弯→切断。模具凸模用 W6Mo5Cr4V2 高速钢 + TiCN 涂层，刃磨寿命 15 万次；铜排折弯回弹通过 2° 过弯补偿。料带利用率 82%，单件冲压成本 0.11 元。关键维护：每 4 h 清理铜屑防划伤带面，镀锡层划伤会引发后续电化学腐蚀。
EV-charger busbars (tin-plated T2 strip, 3×40 mm) run on an eight-station progressive die at 120 SPM on a 60 t press: pierce, emboss, bend, cut off. W6Mo5Cr4V2 punches with TiCN coating last 150,000 strokes between grinds; the 2° bend compensates copper springback. Strip utilization is 82% at ¥0.11 per part. Clean copper chips every 4 h—scratched tin plating seeds later galvanic corrosion. ---