The piston rod of family sedan's rear snubber fractured duringearlier stage of rotarybending fatigue test.
家轿后减振器活塞杆在进行旋转弯曲疲劳试验时出现早期断裂。
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Results showed that ferrite net and lower hardness due to low cooling rate, coarser finish machining resulted in the fracture during earlier stage of rotarybending fatigue test.