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低淬钢制造大,中模数齿轮,也都采用全齿套环加热淬火,属于深层加热,浅层淬火的性质。可采取较缓慢的加热速度(<20℃/s)和较小的比功率(一般0.2—0.7KW/cm~2)。在没有最佳功率和频率的设备匹配下,只要工艺参数调整控制得当,也能获得高质量产品。低淬钢大中模数齿轮,齿沟需要快速强化冷却,同时需要瞬间的大流量将深层中较大热量带走,因此闭压要达到6—8hgf/cm~2,流量要有一定的储备,一般配置150吨/H流量能力的水泵。本文所举的低淬钢大中模数齿轮各项性能、装机使用寿命,相当甚至超过了原渗碳合金钢齿轮。如拖拉机齿轮装机使用寿命远远超过国家规定的6000小时使用期,最长的已达15000小时。低淬钢比渗碳钢材料价格一般便宜25％,大中模数齿轮由于单件份量重,材料费用,电耗节约更为可观。
Low-quenched steel manufacturing large, medium modulus gear, are also used to quench the whole tooth ring, a deep heating, shallow quenching properties. Can take a slower heating rate (<20 ℃ / s) and a smaller specific power (usually 0.2-0.7KW / cm ~ 2). In the absence of the best power and frequency matching equipment, as long as the process parameters properly adjusted, but also access to high-quality products. Low-quenched steel medium and large modulus gear, tooth groove need to quickly strengthen the cooling, while the need for an instant large flow of heat away from the deep, so the pressure to reach 6-8hgf / cm ~ 2, the flow must have a certain reserve , The general configuration of 150 tons / H flow capacity of the pump. In this paper, the performance of the low quenched steel large and medium modulus gear, installed life, quite even exceeded the original carburizing alloy steel gear. Such as tractor gear installed far longer than the national service life of 6000 hours, the longest has reached 15,000 hours. Low-carburized steel is generally cheaper than the price of carburizing steel 25%, medium and large modulus gear as a single weight, material costs, power consumption savings is more impressive.