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一、收割机的主要部件刀片中的定刀片原用T9钢制成,刃部经高频淬火,由于淬硬深度不够、表面脱碳、晶粒粗大等原因而使用寿命短,在我国南方收割水稻,一般只能切割130～150亩(按一米割幅计算)。上海材料研究所和宝山农机修造厂等单位用45钢渗硼处理生产的定刀片,使用寿命达300～400亩,比一般水平提高两倍多。二、上海拖拉机厂、武汉拖拉机厂和西安交通大学等单位采用低淬透性钢55DTi作拖拉机小模数齿轮,进行中频淬火处理后,单齿疲劳负荷(1×10~6次不断齿时的负荷)从6吨提
First, the harvester of the main components Blade in the blade originally made of T9 steel, the blade by high-frequency quenching, due to insufficient depth of hardening, surface decarburization, coarse grain and other reasons of short life, harvest in southern China Rice, generally only cut 130 to 150 acres (according to one-meter cut calculation). Shanghai Institute of Materials and Baoshan Agricultural Machinery repair factory and other units with 45 steel boronizing the production of fixed blade, the service life of 300 to 400 acres, more than double the average. Second, Shanghai tractor factory, Wuhan tractor factory and Xi’an Jiaotong University and other units using low hardenability steel 55DTi tractor for small modulus gear, IF quenching, the single tooth fatigue load (1 × 10 6 times without teeth Load) from 6 tons to mention