Al2O3 particle-reinforced nodular cast iron winding drum and preparation method thereof

The invention provides an Al2O3 particle-reinforced nodular cast iron winding drum and a preparation method thereof. Component reinforcement is conducted on a nodular cast iron material used by the nodular cast iron winding drum. According to the preparation method of the Al2O3 particle-reinforced nodular cast iron winding drum, technology reinforcement is conducted on the nodular cast iron material used by the nodular cast iron winding drum, powerful combination is achieved through combination of component reinforcement and technology reinforcement, so that the tensile strength sigma b of thenodular cast iron material used by the nodular cast iron winding drum is higher than or equal to 620 MPa, the yield strength sigma 0.2 of the nodular cast iron material used by the nodular cast ironwinding drum is higher than or equal to 530 MPa, the ductility delta of the nodular cast iron material used by the nodular cast iron winding drum is higher than or equal to 12%, the hardness HB of thenodular cast iron material