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Failure investigation of crown wheel and pinion

机译:冠轮和小齿轮的故障调查

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The crown wheel and pinion are the critical components in the transmission system of an automobile. Failure of these components has drastic effect on the vehicular movement. This in turn leads to increased downtime for repairs. The cost of these components adds to the criticality in addition to its function. A fractured gear was subjected to detailed analysis using standard metallurgical techniques to identify the cause for failure. The study concludes that the failure is due to the compromise made in raw material composition by the manufacturer, which is evident by the presence of high manganese content and non-existence of nickel and molybdenum. This resulted in high core hardness (458 HV) leading to premature failure of the vital component of transmission system in a vehicle.
机译:冠齿轮和小齿轮是汽车传动系统中的关键组件。这些部件的故障会对车辆的运动产生巨大影响。反过来,这会导致维修的停机时间增加。这些组件的成本除了其功能之外,还增加了关键性。使用标准的冶金技术对断裂的齿轮进行了详细分析,以确定故障原因。研究得出的结论是,这种失败是由于制造商对原材料成分的妥协所造成的,这可以通过高锰含量的存在以及镍和钼的不存在来证明。这导致高的核心硬度(458 HV),导致车辆传动系统的重要组件过早失效。

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