一、绪言 在美国已经成功的气氛热处理,目前在日本也进入到了操作阶段,大企业不用说,中小企业也正在广泛普及。在气氛热处理中,最重要的是使在一定条件下不断流入的气氛适合于被处理物,为此必须对作为气氛管理用的最适合的测定因素及其测定值进行调节。 在目前的气氛热处理中,假如对普及率最高的气体渗碳来说,为使发生的气体保持所希 I. INTRODUCTION Atmospheric heat treatment, which has been successful in the United States, has also entered the operational phase in Japan. Needless to say, large enterprises are also increasingly adopting small and medium-sized enterprises. In the atmospheric heat treatment, it is most important to adapt the atmosphere constantly flowing under certain conditions to the object to be treated. Therefore, it is necessary to adjust the most suitable measurement factor and the measurement value for atmosphere management. In the current atmosphere of heat treatment, if the highest penetration rate of gas carburizing, in order to maintain the gas produced