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所谓农机具,包括耕耘、播种、植保、运输、农副产品加工和禽畜饲养等机械。农机产品种类繁多,热处理工艺复杂程度及工作量要求不尽相同,许多零件与一般机械零件要求大致一样;但也有些零件服役条件特殊,对材料和热处理工艺有特殊要求,特别是对耐磨粒磨损和自磨刃性能要求较高。例如,各种犁的犁壁和犁铧、机引耙的圆盘耙片、中耕机锄铲、旋耕机的旋耕刀,以及碾米机的米刀和米筛等量大面广农机具,尤其是一些易损基础件消耗量很大。例如,犁铧年耗量约100万片;耙片年耗量约150万片用65Mn钢板约23000吨;旋耕刀年耗量170万把,轧花机锯片年耗量100万片。所以,提高这些零件的热处理质量,延长使用寿命,具有重大的经济意义。
The so-called agricultural machinery, including hard work, planting, plant protection, transportation, processing of agricultural by-products and livestock breeding and other machinery. Many varieties of agricultural machinery, heat treatment process complexity and workload requirements vary, many parts and general mechanical parts require the same; but there are some parts of special service conditions, materials and heat treatment processes have special requirements, especially for wear-resistant particles Wear and self-sharpening performance requirements. For example, a variety of plow plowshare and ploughshare, machine rake disk harrows, cultivator hoe shovel rotary tillage machine, as well as the rice mills and meters sieve rice flour machine Guangmian Guang Nong In particular, some vulnerable basic components consume a lot. For example, plowshare annual consumption of about 1 million; disc scraper annual consumption of about 1.5 million 65Mn steel plate with about 23,000 tons; rotary cutter annual consumption of 1.7 million, ginning machine saw the annual consumption of 1 million. Therefore, to improve the quality of heat treatment of these parts, to extend the service life, with significant economic significance.