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工业上业己发展和应用了一些反映淬火介质热特性的冷却能力测定方法,如:冷却曲线法、磁性法、热丝法及区间法(温升评定法)等。本文仅对冷却曲线法加以详细讨论。其他各种方法已在最近出版的美国金属学会的《金属手册》热处理卷中作了更完整的论述。冷却曲线法可能是一种最实用的技术,因为它是通过整个淬火过程来确定的。试样加热到一定温度后淬火,应用焊接在其中心的热电偶跟踪记录冷
Industrial Applicability A number of methods have been developed and applied to measure the cooling capacity of quenching media, such as cooling curve method, magnetic method, hot wire method and interval method (temperature rise method). This article only discusses the cooling curve method in detail. Various other approaches have been more fully described in the recently published “Metal Handbook” Heat Treatment Volume of the American Metal Society. Cooling curve method may be the most practical technique, because it is determined by the entire quenching process. The sample is heated to a certain temperature after quenching, the application of welding in its center of the thermocouple tracking record cold