Wear-resistant and corrosion-resistant white cast iron for ocean engineering dredging pump and preparation method of wear-resistant and corrosion-resistant white cast iron

The invention discloses wear-resistant and corrosion-resistant white cast iron for an ocean engineering dredging pump and a preparation method of the wear-resistant and corrosion-resistant white cast iron, and relates to the technical field of casting, and the wear-resistant and corrosion-resistant white cast iron for the ocean engineering dredging pump comprises the following components in percentage by mass: 23-28% of Cr, 2.5-3.5% of C, less than or equal to 1.5% of Mn, less than or equal to 1.0% of Si, less than or equal to 1.0% of Ni, less than or equal to 1.0% of Mo, 0.7-1.0% of Cu, less than or equal to 0.5% of Nb, less than or equal to 0.5% of V and the balance of Fe. The white cast iron obtained through the preparation method has high abrasion resistance and corrosion resistance, the quality of castings can be improved while energy consumption is reduced, the rejection rate of the castings is reduced, the requirements of ocean engineering dredging pumps for abrasion resistance and corrosion resistance