Inoculated cast iron and preparation method thereof

The present invention provides a method for preparation and inoculation of cast iron, the metallic material belongs to the field, and relates to a method for preparing iron inoculation. Inoculation of cast iron, the weight percentages of each component are as follows: C3.3-3.5%, Si1.3-1.5%, Mn1.3-1.6%, P0.03-0.05%, S0.06-0.07%, Cr21-23 %, Nd0.25-0.29%, Sn0.25-0.29%, Ti0.25-0.29%, Se0.25-0.29%, balance being Fe. Preparation method: weighing each raw material, an alloy was prepared, the Nd-Sn-Se-Ti-Zn alloy added was cast into an ingot, and heat insulation, air quenching, tempering to give birth cast iron. The inoculation of cast iron has good overall performance, low material cost, simple preparation.