犁壁是耕作机械的基础件之一,是量大面广的易损件。原来各农机厂基本上都采用低碳钢渗碳(固体或气体)来制造,工艺落后,生产效率低,劳动强度大,生产成本高,质量不稳定,使用寿命短。据一机部的攻关要求,由黑龙江省农机厂、广东省机引农具厂、昆明市农机厂、一机部机械院农机所等单位组成了犁壁新材料课题组,开展了试验工作。1976年底在黑龙江省农机厂试验成功低碳马氏体35钢犁壁、并投入 Plow wall is one of the basic components of farming machinery, is a large number of vulnerable parts. The original farm machinery are basically used carburizing of low carbon steel (solid or gas) to create, backward technology, low productivity, labor-intensive, high production costs, unstable quality, short service life. According to the research requirements of a machine department, the research group was composed of Heilongjiang Agricultural Machinery Factory, Guangdong Machinery Factory, Kunming Agricultural Machinery Factory, a machinery department of Agricultural Machinery and other units to carry out experimental work. The end of 1976 in Heilongjiang Province Agricultural Machinery Factory successfully tested low-carbon martensite 35 steel plow wall, and put into