Centrifugal nodular cast iron pole and preparation method thereof

The invention provides a centrifugal nodular cast iron electric pole and a preparation method thereof, and belongs to the field of nodular cast iron electric pole manufacturing. The preparation method of the centrifugal nodular cast iron electric pole comprises the following steps that tempering and spheroidizing are sequentially carried out on molten iron, then wire feeding inoculation is carried out, then centrifugal casting is carried out, and finally annealing treatment is carried out, so that the centrifugal nodular cast iron electric pole is obtained. According to the method, high-speed centrifugal casting is adopted, alloy elements such as Mo, Ni and V do not need to be added into nodular cast iron, a pipe body with fine grains and a compact structure can be obtained, the quality defects such as structure looseness, air holes and shrinkage cavities which are not easy to solve by other casting processes are effectively overcome, and the quality of the nodular cast iron electric pole is obviously improve