液力机械(包括液力偶合器、变矩器)最关键的元件就是泵轮和涡轮,它们统称为叶轮。国内外大批量生产叶轮的工厂,主要是采用低压金属型的铸造工艺。它的优点:叶轮几何精度高、铝合金强度好。但它不适用于叶轮品种繁多,生产批量小,周期短的情况。根据 Hydraulic machinery (including fluid couplings, torque converter) is the most crucial components of the impeller and turbine, they collectively referred to as the impeller. Large-scale production at home and abroad impeller factory, mainly the use of low-pressure metal casting process. Its advantages: High geometric precision impeller, aluminum alloy good strength. But it does not apply to a wide range of impeller, the production volume is small, the cycle is short. according to