The metal oil pipe in hydraulic system was studied,and it's manufacture,assembly,failure mechanism in working were analyzed.When inner wall dirt of metal oil pipe was not cleaned by using hydraulic system initial stage,it is one of the important reasons for the high failure rate.The light machine by using water jet abrasive flow hydraulic oil pipe wall is necessary equipment for hydraulic system manufacturers in china.%该文对液压系统的金属油管进行了研究,并对制造、装配、使用后的失效机理进行了分析.认为金属油管内壁的污物没有清除干净是液压系统初期故障率高的重要原因之一.水射磨料流液压油管内壁光整机是我国液压系统生产企业的必备设备.
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