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双介质淬火是把加热和保温后的工件先投入水中冷却,使其温度急速降至300℃以下,然后将工件从水中取出,迅速转入油中缓慢冷却。在上述淬火过程中,因使用两种淬火剂,故称双介质淬火。这种淬火方法既减少了工件变形与开裂的可能,又可保证工件具有较高的硬度。由于是手工操作,在水中停留时间难于掌握。现将我们在工作中的一点经验写出来,供大家参考。 掌握双介质淬火的关键在于工件停留在水中冷却的时间。在水中停留时间过长,便失去了后阶段缓冷的意义。在水中停留时间过短,又会产生硬度不足的毛病。现向大家推荐几种掌握在水中停留时
Dual-media quenching is to heat and heat the workpiece after the first water into the cooling, so that the temperature dropped rapidly below 300 ℃, and then remove the workpiece from the water, quickly transferred to the oil slowly cooling. In the above quenching process, due to the use of two quenching agent, so that the dual media quenching. This quenching method not only reduces the possibility of workpiece deformation and cracking, but also ensure that the workpiece has a high hardness. Due to the manual operation, it is difficult to grasp the residence time in the water. Now we write a little experience in the work for your reference. The key to mastering dual-media quenching is the time it takes for the part to cool in water. Stay in the water for too long, they lose the meaning of slow cooling after the stage. Stayed in the water for too short, will produce problems of lack of hardness. Now we recommend to you a few master in the water to stay