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剖析了PDC钢体钻头壳体材质,指出大截面钻头壳体可选用50CrMo钢,并结合生产实践选择不同热处理制度,获得最佳组织状态——贝氏体组织。
The material of PDC steel body is analyzed. It is pointed out that 50CrMo steel can be selected for the shell of large section drill bit, and different heat treatment system can be selected according to the production practice to obtain the best microstructure - bainite structure.