为此，设计制造了特殊的感应器和工装夹具，采用二次高频淬火工艺解决了该倒挡拨叉的热处理难题。
For this reason, special inductor and fixture have been designed and the heat treatment problem of the reverse fork has been successfully solved by double high frequency quenching.
采用感应加热研究X 70控轧钢弯管二次加热力学组织、力学性能随着淬火温度、回火时间的变化规律。
Using the method of induction heating, the regulation of the variety of X70 controlled rolling steel bends'mechanics structure and mechanics property in secondary heating is investigated.
机床整体床身重，同时床身制造过程中采用二次淬火工艺，从而改变了铁的内部结构，使之更加耐冲压，刚性上有显著提高。
Tempering of the machine bed is carried out twice to ensure stability. The tempering process changes the internal structure of the iron making it more durable and rigid.
另外为消除二次淬火对ASTM 4130钢组织和性能的影响，应采用多层多道焊，并添加回火焊道。
In addition, to weaken the effect of double quenching on the microstructure and properties of ASTM4130 steel, multi-pass welding and temper bead should be adopted.
结果表明，随二次淬火温度的升高，硬度逐渐升高。
The results show that the higher the second quenching temperature, the higher the hardness.
分析讨论了二次淬火后马氏体的组织与亚结构，测量了该材料的主要力学性能。
The martensite substructure after quenching and the effect of grain size on the martensite substructure had been studied. The mechanical properties were measured.
超高碳钢控轧后进行超细球化预处理，并在不同的温度下进行二次淬火。
Ultra-fine spheroidizing pretreatment technology was applied to the 1.41%C hot-rolling ultra-high carbon steel. Then the second quenching was carried out at different temperature.
以上诸因素的共同作用，使贝氏体具有比直接淬火所获得的马氏体更高的二次硬化效应、热强性和组织稳定性。
As a result of the coaction of abovementioned factors, the bainite has superior secondary hardening effect, thermal strength and structural stability to martensite formed by straight tempering.
以上诸因素的共同作用，使贝氏体具有比直接淬火所获得的马氏体更高的二次硬化效应、热强性和组织稳定性。
As a result of the coaction of abovementioned factors, the bainite has superior secondary hardening effect, thermal strength and structural stability to martensite formed by straight tempering.
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