Abstract : requirements for hydraulic steering rack cylinder are very high , the rack cylinder should be durable , lubricants preservable and of seal . so , finish machining and parameter - set are necessary 文摘:液压转向机对齿条杆部表面有很高的耐磨、储油、封存要求，为此需要一套表面超精加工工艺及加工参数设定。
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