摘要
用人为的方法,在表面温度高于T1时产生超前扩展点的做法叫做超前扩展点的诱导。用液态介质中冷却的四阶段理论分析指出:通过诱导产生超前扩展点可以克服自然超前扩展点的随机性,可以提高工件获得的冷却速度,还可以减小工件上的冷却速度差异。提出了两种诱导超前扩展点的方法:诱导锥法和冲液法。用实际的诱导试验演示了这两种方法的诱导效果。超前扩展点的诱导将成为精细淬火冷却技术中的一项基本方法。
By using manual methods, hyper-spreading spots can be produced while the surface temperature is higher than T1, this is termed induction of a hyper-spreading spot. Using the four-stage differentiation theory of quenching in liquids, the following analyses can be made ： producing hyper-spreading spots by induction can eliminate the problem of randomness in natural occurrence of hyper-spreading spots ; can increase the cooling rate of the work piece ; and reduce the differences in cooling rates within a work piece. Two kinds of hyper-spreading spot induction methods have been offered： induction by cone and jet stream induction. Experiments have shown the effectiveness of the two induction methods. Induction of hyperspreading spots can become a basic process method within the fine quenching technique.
出处
《热处理技术与装备》
2007年第4期14-18,共5页
Heat Treatment Technology and Equipment
