过去有关资料介绍的标准热电偶自动退火柜,都是通过调整自耦变压器使热电偶的加热电流达到规定值,而当热电偶通电加热至预定时间后,则采用马达经机械减速器和离合器带动自耦变压器使电刷移动的方法来实现自动均匀降温。这种装置一般比较笨重,而且加工也较困难。一九七四年我们制成了用可控硅调压和晶体管电路自动控制均匀降温的标准热电偶自动退火柜,结构简单,体积小,制 In the past, the standard thermocouple automatic annealing cabinet introduced by the materials all achieved the heating current of the thermocouple by adjusting the autotransformer. When the thermocouple was energized and heated to a predetermined time, the motor was driven by the mechanical reducer and the clutch Autotransformer brush to move the way to achieve automatic and uniform cooling. Such devices are generally cumbersome, and the processing is more difficult. In 1974, we made a standard automatic thermocouple annealing cabinet with thyristor voltage regulator and transistor circuit to automatically control the temperature drop evenly, with simple structure, small volume,