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研究了涡轴发动机9310钢薄壁空心轴渗碳+淬火复合型热处理技术,通过调整低压真空渗碳加热、冷却方法实现了9310钢薄壁空心轴0.5mm渗碳层加工。采用分级淬火方法、改进装炉方式、半精加工后增加稳定处理等,有效控制了空心轴的微小变形,获得高硬度、高耐磨和尺寸精度高的零件,并通过了涡轴发动机150h持久试车考核,实现了薄壁空心轴渗碳淬火的工程化应用,为小尺寸薄壁轴类零件渗碳及淬火变形控制提供参考。
The technology of carburizing and quenching composite thin-walled hollow shaft of turbine shaft 9310 steel was studied. The 0.5mm carburized layer of 9310 steel thin-walled hollow shaft carburized was realized by adjusting the heating and cooling of low-pressure vacuum carburizing. Adopting grading quenching method, improving loading method, adding stable treatment after semi-finishing, effectively controlling the tiny deformation of the hollow shaft to obtain the parts with high hardness, high wear resistance and high dimensional accuracy, and passed the turbine shaft 150h long lasting Test evaluation, the realization of thin-walled hollow shaft carburizing engineering application of quenching, small-scale thin-walled shaft parts carburizing and quenching deformation control provide a reference.