Centrifugal casting mould for IC engine cylinder blanks

The utility model relates to a centrifugal casting mould of cylinder jacket rough of a combustion engine, comprising a mold body connected with a principal axis of a centrifugal casting machine, a back blocking block of the mold body connected with a mandril of the centrifugal casting machine and a front cover. The utility model is characterized in that a sand mold jacket is positioned inside the mold cavity of the mold body. The external surface of the cylinder jacket rough of the combustion engine cast by the centrifugal casting mould is not with a white iron hardened layer; the external surface is bright and clean; the utility model is of large and even volume density and good quality, the mechanical manufacturing of finished products can be carried out without high temperature retreat, thus saving the working hour and the production cost.