由我院七系马茂元、常天义、刘兆域、宋伟、常铁军等同志和四川齿轮箱厂(468厂)共同研究的船用渗碳齿轮以碳氮共渗取代的新工艺课题经两年多的反复研究试验,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农机、汽车等行业开始推广应用以来,取得了 The new technology topic replaced by carbonitriding of marine carburizing gears jointly researched by seven materical MA Maoyuan, Chang Tianyi, Liu Zhaoyuan, Song Wei and Chang Tiejun and Sichuan Gearbox Factory (No. 468 Factory) Repeated research trials, successfully completed the research task assigned by the China Shipbuilding Corporation, recently passed the ministerial level appraisal. Since the late seventies, gas carbonitriding in China’s agricultural machinery, automobiles and other industries began to promote the use of, made