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5、流态层热处理的发展流态层热处理又称沸腾层热处理,由于经历了漫长的发展历程应该不算是新的工艺技术。但是近年来流态层热处理有很多新进展。改变了驱使粒子维持悬浮态的气氛成份与热源、炉子的结构也从内燃式、外燃式、间接加热式乃至组合成连续式流态层热处理生产流水线。应用范围也从淬火、正火、退火和回火扩大到渗碳、碳氮共渗和氮化等化学热处理,从这些新进展来看应该认为是热处理工艺新技术。伴随着流态层热处理的一
5, the development of fluidized layer heat treatment Fluidized layer heat treatment, also known as boiling layer heat treatment, due to the long course of development should not be regarded as a new process technology. However, there have been many new advances in fluidized bed heat treatment in recent years. Changed the atmosphere to drive the particles to maintain the suspended state components and heat source, the structure of the furnace from the internal combustion, external combustion, indirect heating or even into a continuous flow layer heat treatment production lines. Applications range from quenching, normalizing, annealing and tempering expanded to carburizing, carbonitriding and nitriding and other chemical heat treatment, from these new developments should be considered as a new heat treatment technology. One with fluidized bed heat treatment