1. The casting has high dimensional accuracy, clear external contour, good surface finish and appearance quality, and high comprehensive quality of dense structure casting.
2. Because resin sand has good fluidity, easy compaction, adjustable demoulding time, high strength after hardening, and does not deform in the subsequent handling and closing process; because the high rigidity of resin sand basically invisible wall displacement phenomenon in the process of pouring and solidification, so the size precision of casting is higher than that of clay sand and oil sand, which can be increased by 1-2 levels.
3. No drying shortens the production cycle and saves energy. Besides, the molding sand in drying process is easy to compact and easy to clean, which greatly reduces the labor intensity of workers and creates conditions for mechanized production.