由哈船院和国营四八六厂共同研究的船用渗碳齿轮改用碳氮共渗齿轮新工艺课题,经两年多的反复研究攻关,圆满地完成了中船总公司下达的科研任务,最近通过了部级鉴定。自七十年代末期,气体碳氮共渗在我国 From Harrington Academy and the state-owned four hundred forty-six plant joint research into the carburizing gear carbonitriding gear new technology topics, after more than two years of research to tackle the problem, successfully completed the China Shipbuilding Corporation issued scientific research tasks, Recently passed ministry appraisal. Since the late seventies, gas carbonitriding in our country