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  • 马辰生.某型增压器主轴断裂原因分析[J].柴油机,2021,43(5):57-60.    [点击复制]
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某型增压器主轴断裂原因分析
马辰生
0
中车大连机车研究所有限公司,辽宁 大连 116021
摘要:针对一起增压器主轴变截面处断裂故障,对主轴断口进行了宏观与微观分析。结果表明:主轴变截面处过渡圆角加工过小且形成尖锐交面,是导致主轴发生疲劳断裂的根本原因。通过改进主轴加工工艺,上述问题得到解决。
关键词:  增压器;主轴;断裂;加工
Fracture Failure Analysis of a Turbocharger Rotor Shaft
Ma Chensheng
CRRC Dalian Institute Co., Ltd.,Liaoning Dalian 116021
Abstract:Aiming at the rotor shaft fracture of a turbocharger at variable cross-section, macroscopic and microscopic analysis was carried out on the rotor shaft fracture. The results show that the undersize transition fillet radius and the sharp intersecting surface between fillets at variable cross-section of the rotor shaft is the cause of fatigue facture. By improving the machining process of rotor shafts, the problem is solved.
Key words:  turbocharger;rotor shaft;fracture;machining