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论述 2 5Cr2MoV深层渗氮齿轮弯曲疲劳强度的试验研究。试验在英国产STRON 160 3型电磁谐振疲劳试验机上进行。短寿命区采用四级恒定应力水平的成组试验法 ,长寿命区采用应力升降试验法。在试验数据基础上 ,根据统计学原理 ,拟合出完整的C -R -S -N曲线 ,并获得各种置信度和可靠度下的弯曲疲劳极限值。
Discussion on Bending Fatigue Strength of 25Cr2MoV Deep Nitriding Gear. The test was carried out on a STRON 160 3 type electromagnetic resonance fatigue tester in the United Kingdom. The short-lived zone adopts four groups of constant stress levels of the group test method, long-life zone stress rise and fall test method. Based on the experimental data, the complete C -R -S -N curve was fitted according to the statistical principle, and the bending fatigue limit values under various confidence levels and reliability were obtained.