KING MOULD is the professional mould supplier for centrifugal fan mould. The most important point to make centrifugal fan mould is the concentricity of the fan blade. Centrifugal fan usually consist of the 30 to 50 leaves. Then how to control the concentricity of the centrifugal fan mould? Concentricity of the centrifugal fan mold is made from two sides, cavity and core. For the cavity of centrifugal fan mould, we make it by circular insert and embed in the mould base, which the circular insert can be machined by numerically controlled lathe. For the core side of centrifugal fan mould, it consist of ejection plate and core insert. The ejection plate we make it as circular ring can be machined by numerically controlled lathe, and the core insert made it as circular column can be made in the same way. The leaves of the centrifugal fan on the core insert is made by slow wire cutting. Slow wire cutting machine cut the external surface 4 times to find the central of the core. The leaves made by wire cutting is very smooth, no need to do any polishing. There’s many other detail should concern to make the centrifugal fan mould, usually one of the process is wrong made, the mould is no longer useful.