In the production of large-scale steel cast girth gear for ball mills and kilns, sand molding is the core process link that determines the quality, precision and performance of girth gear, which directly affecting the reliability of the finished product.
Segmented molding technology: For large gear rings, segmented sand mold combination casting is used to solve the problem of overall mold production while ensuring splicing accuracy.

Anti-deformation design: By presetting the anti-deformation amount or reinforcing ribs in the sand mold, the cooling shrinkage stress of the casting is offset to ensure the roundness and flatness of the gear ring.