2021-08-02

Steel ball mold is used to produce grinding balls from diameter 40mm to 150mm. Steel ball mold consist of top and bottom mold. Dozens of pair steel ball mold just need one piece of pattern to molding. By the locating pins, the top mold and bottom mold are connected together. The sand layer is made by pattern. The molten liquid can directly contected with metal ball core to gain chilling process. This process can get more finer grinding balls.