Meanwhile, the fracture was accelerated due to the uneven surface hardness and the unreasonable distribution of the hardening layer on the crankshaft, and the bad lubrication condition in service.
Meanwhile, the fracture was accelerated due to the uneven surface hardness and the unreasonable distribution of the hardening layer on the crankshaft, and the bad lubrication condition in service.
同时轴左颈表面硬度不均匀、淬硬层分布不甚合理，工作过程中润滑条件差，加速了曲轴的断裂。