目前,高速钢淬火加热,一般都采用高温盐浴炉来实现。对于炉温的测量和控制,普遍应用辐射高温计或铂铑—铂热电偶并配合电子电位差计来进行。这两种感温元件部存在一定缺点。就铂铑—铂热电偶来说,最主要的问题是石英保护管性脆易破裂,致使高温盐渗入管 At present, high-speed steel quenching and heating, are generally used to achieve high-temperature salt bath furnace. For the temperature measurement and control, the general application of radiation pyrometer or platinum rhodium - platinum thermocouple with the electronic potentiometer. There are some shortcomings in these two temperature sensing components. As far as platinum-rhodium-platinum thermocouples are concerned, the most important problem is that the brittle and ruptured tube of quartz protector causes the high-temperature salt infiltration tube