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对正在检修的葛洲坝水力发电厂 18号 12 5MW的ZZ5 0 0 -LH - 10 2 0轴流转桨式水轮发电机组的枢轴—铜瓦摩擦副进行了失效分析 ,从宏观磨损形貌推断 ,枢轴—铜瓦摩擦副中存在着粘着磨损、磨料磨损和疲劳磨损三种磨损类型 ;在滑动摩擦过程中 ,同时还产生和传递着静载荷伴有脉动的附加载荷的交变负荷 ,它的损伤属于机械滑动疲劳损伤。针对枢轴—铜瓦摩擦副的失效原因 ,对枢轴—铜瓦摩擦副的维修方案进行了探讨。
The failure analysis of the pivot-copper friction pair of the ZZ5 0 0 -LH-10 2 0 axial-flow paddle-type hydro-generating unit with 125MW at No. 18 of the Gezhouba Hydropower Plant being overhauled is inferred from the macroscopic wear morphology There are three kinds of wear types of adhesive wear, abrasive wear and fatigue wear in the pivot-copper friction pair. During the sliding friction, an alternating load of additional load with static load accompanied by pulsation is also generated and transmitted The damage belongs to mechanical sliding fatigue damage. Aiming at the failure reason of the pivot-copper friction pair, the maintenance scheme of the pivot-copper friction pair is discussed.