精密铸造是一种精密铸造，指的是获得精准尺寸铸件工艺的总称。相对于传统砂型铸造工艺，精密铸造获的铸件尺寸更加精准，表面光洁度更好。它包括：熔模铸造、陶瓷型铸造、金属型Precision casting is a type of precision casting, which refers to the process of obtaining precise size castings. Compared to traditional sand casting processes, precision casting produces more accurate casting dimensions and better surface finish. It includes investment casting, ceramic casting, and metal casting