常用浇口形式 normal gate type : ① 边缘浇口（J型浇口） — edge gate, J – gate ② 侧浇口 — side gate ③ 潜伏式浇口 — sub-gate, subsurface gate, submarine gate, cashew gate ④ 潜伏式二次浇口(隧道式浇口) — tunnel gate onto feeder post ⑤ 点浇口 — ...