Case: Automated Molding Line for Bronze Valves
案例：自动造型线批量铜合金阀体
标签：自动造型线, 阀体, 批量, 铜合金
某厂铜合金阀体（黄铜 C83600，0.8 kg/件）用垂直分型无箱射压造型线，造型 240 型/h、一型 8 件，配 2 t 中频炉双班浇注。落砂后铸件尺寸公差稳定 CT8 级，加工余量从手工造型的 3 mm 降到 1.5 mm。改造要点：浇口杯与直浇道一体成型于模板、砂型硬度 ≥90 B 型硬度计读数、浇注自动倾炉同步跟随。人工从 12 人降到 4 人，单件成本降 35%。
A bronze valve body line (C83600, 0.8 kg each) uses a vertical flaskless shoot-squeeze molding line at 240 molds/h with 8 cavities, fed by a 2 t induction furnace on two shifts. Castings hold CT8 tolerance and machining stock fell from 3 mm (hand molding) to 1.5 mm. Keys: integral sprue cup on the pattern plate, mold hardness ≥90 on the B scale, and auto-ladle pouring synced to the line. Labor went from 12 to 4; unit cost down 35%. ---