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收割机刀片是量大面广的易损件.以前,我国北方割麦用的刀片,由于对T 9钢材热处理控制不严及动刀片齿纹结构参数设计不尽合理等原因,刀片在使用中断齿严重,寿命较短.动刀片平均使用寿命约为每米割幅割麦700～1000亩,相当于国外先进水平的二分之一左右.动刀片齿纹加工采用铲削工艺,生产效率低,满足不了日益增长的需要.而南方割稻用的刀片,由于T 9钢材来源困难,多为代用材料,热处理工艺混乱,刀片的几何形状多样,不能互换.江浙一带的水稻要求割茬低,所以磨损严重,刀片使用寿命平均每米割幅仅100～200亩,一副刀杆不能完成一个收割季节的作业,影响了农时和收割机的推广使用. 针对上述存在的问题,一机部
Harvester blade is a large amount of widely-wearing parts.In the past, cutting the wheat in northern China with the blade, due to the heat treatment of T9 lax control and motion of the tooth structure parameters design is not reasonable and other reasons, the use of blades in the interruption Tooth serious, short life expectancy, the average blade life of about cutting per m cutting 700-1000 acres, equivalent to about one-half of the advanced level of foreign moving blade tooth profile machining shoveling technology, low production efficiency , Can not meet the growing needs.While cutting rice in the South blade, due to T 9 source of steel is difficult, mostly as a substitute material, heat treatment process confusion, the blade geometry varied, not interchangeable.Jiangsu province of rice requires cutting stubble low , So serious wear and tear, the average blade life of only 100 ~ 200 acres cut a knife can not complete a harvest season operations, affecting the promotion of agricultural and harvesting machine use.For the above problems, a machine department