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1台SWDM-22型旋挖钻机,配置康明斯M11-C330型柴油机,已累计运转7500 h。该钻机在施工中,出现因柴油机油底壳内有水而无法启动的故障。解体柴油机后,发现其6个湿式缸套都有不同程度的穴蚀,个别部位穴蚀还比较严重。1.汽缸套穴蚀原因该机缸套穴蚀部位出现在缸套外表面沿连杆摆动方向两侧,外形为直径1～
A SWDM-22 rotary drilling rig, equipped with Cummins M11-C330 diesel engine, has been running a total of 7500 h. During the construction, the rig failed to start due to the water in the oil sump of the diesel engine. Disintegration of the diesel engine, found that six of its wet cylinder liner have different degrees of cavitation, cavitation in individual parts is still more serious. 1. The cause of cylinder liner cavitation Cylinder liner cavitation parts appeared in the cylinder liner outer surface along the connecting rod swing direction on both sides, the shape of a diameter of 1 ~