一、概述淬火介质冷却速度的测定至今在国内外都还没有一种统一的标准方法,一般以探头联接热电偶至一定温度后淬入所研究的冷却介质中,热电偶输出信号电平送到记录仪,由记录仪描绘冷却过程中温度随时间变化的冷却曲线,然后以近似的方法计算求出各种温度下的冷却速度曲线。各种方法所用的探头材料、尺寸、形状、热电偶规格、接合方法以及加热和冷却装置都不相同,因此,所获得的冷却曲线与特性曲线也不一致,不仅测试结果无法进行国际交流,即使在国内同行间也没有共通的可能,而且计算过程繁复,处 I. Overview Quenching medium cooling rate determination at home and abroad have not yet a uniform standard method, the general probe to the thermocouple to a certain temperature after quenched into the study of the cooling medium, the thermocouple output signal sent to the record Instrument, by the recorder depicting the cooling curve of the temperature changes over time cooling curve, and then calculate the approximate method of calculating the temperature at various cooling rate curve. The probe materials, dimensions, shapes, thermocouple specifications, joining methods, and heating and cooling devices used in the various methods are all different. Therefore, the obtained cooling curves and the characteristic curves are also different, not only the test results can not be exchanged internationally, There is no common possibility among domestic counterparts, and the calculation process is complex and complicated