Working principle of heat transfer oil pump polishing and finishing

Grinding is a commonly used sealing surface finishing method in the process of heat transfer oil pumps. Grinding can achieve high dimensional accuracy, geometric roughness, and surface roughness of the sealing surface of the heat transfer oil pump, but it cannot improve the mutual positional accuracy between the surfaces of the sealing surface. The sealing surface should generally undergo precision grinding before polishing. The sealing surface after precision grinding can be directly polished, with a small grinding allowance of 0.008-0.020mm for diameter and 0.006-0.015mm for flat surface. The smaller value is taken for manual grinding or when the material hardness is high, and the larger value is taken for mechanical grinding or when the material hardness is low. After polishing the sealing surface of the heat transfer oil pump, it can achieve high dimensional accuracy, geometric roughness, and surface roughness, but the mutual positional accuracy between the surfaces cannot be improved.