1, the large bed casting has the characteristics of accurate size and shape, good repeatability and precision casting;

2. The surface smoothness of large lathe bed castings is high;

3, the mold is not taken out of the box, which greatly simplifies the molding process and eliminates the casting defects and waste products of the machine tool bed caused by taking the mold box;

4. The riser with reasonable shape can be set in an ideal position, which is not limited by traditional parting, mold taking and other factors, thus reducing the internal defects of the casting;

5, combined pouring, a box of multiple pieces, greatly improving the process yield and production efficiency of large machine tool castings;

6, reduce the machining allowance and reduce the machining cost;

7. Dry sand molding without binder, moisture and additives is adopted, which eliminates all kinds of casting defects and waste products caused by moisture, additives and binders;

8. The sand treatment system is greatly simplified, all molding sand can be reused, and the molding sand preparation department and waste sand treatment department are cancelled;

9. The large lathe bed castings have no flash burr, which reduces the cleaning and polishing workload by more than 50%;