...调质处理;疲劳试验;产品研制 [gap=601]Keywords: diesel engine;crankshaft;tempered steel;quenching and tempering treatment;fatigue test;product development ...
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Such as quenching and tempering treatment manufacturers want to make regular, and there is a written report.
如调质处理要到正规厂家做，并有书面报告。
After quenching and tempering treatment, the mechanical properties of materials can fully meet the standards.
调质处理后，材料的力学性能完全满足标准要求。
The results show that the main causes of fracture is composition segregation and low strength resut from no quenching and tempering treatment.
结果表明，产生断裂的主要原因是材料内部成分偏析及未按要求对材料进行调质处理导致材料的强度较低。
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