论文部分内容阅读
目前,转子类工件通常按先水后油的顺序进行断续淬火。这种淬火方法可以强化冷却过程,以得到工件的综合使用性能,与单纯的油淬比较,这类大截面工件上不会出现淬火裂纹。但是,这种断续淬火方法也有不足之处,这就是必须使用油槽以及将庞大的工件从水槽移往油槽,这就会降低生产效率、增大劳动强度。如此,着手研制生态上纯净的在冷却装置上对大型工件进行水-空气淬火的工艺。采用该工艺可使工件在整个截面上都获得具有良好使用性能的贝氏体组织,且与先水后油淬火法相比较,所产生的应力变化更低些。
At present, the rotor type of workpiece is usually intermittent quenching after the order of the first oil. This quenching method can strengthen the cooling process, in order to get the overall performance of the workpiece, compared with the simple oil quenching, such a large cross-section of the workpiece will not appear quenching cracks. However, this method of intermittent quenching has its drawbacks. This means that the oil sump must be used and the large workpieces must be moved from the sump to the sump, which reduces the production efficiency and increases the labor intensity. So, proceed with the ecologically pure process of water-air quenching of large workpieces on cooling units. Using this process, the billet structure with good serviceability can be obtained on the whole section of the work piece, and the stress changes will be lower than that of the pre-water oil quenching method.