测量淬火冷却曲线几种热电偶的安装方法  

Thermocouple Installation Methods in Measurement of Cooling Curves

作　　者：田东[1] 潘健生[1] 毛立忠 沈雷 

机构地区：[1]上海交通大学国家教委高温材料及高温测试开放实验室

出　　处：《金属热处理》1998年第11期32-34,42,共4页Heat Treatment of Metals

摘　　要：为有效测量实际工件淬火冷却曲线，热电偶在工件上的安装必须满足温度响应快速、高稳定性和牢固性等关键要求。为此设计了５种热电偶安装方法，应用高速测温系统测量了相应的冷却曲线，通过试验对比了不同安装方法的温度响应速度、重现性、牢固性、寿命和安装难易等特点。试验结果表明，将小直径的露端型铠装热电偶用钎焊法固定于小孔中的作法效果最好，为实际工件淬火冷却曲线测量提供了有效的方法。The thermocouple and its installation on the workpieces must satisfy the key requests of fast temperature response,high stableness,firmness and so on,in order to measure the cooling curves of practical workpieces.Five methods of thermocouple installation are designed,and corresponding cooling curves are measured by high speed temperature measuring system.The temperature responding speed,reappearance,firmness,life and installing convenience of different installation methods are compared by tests.The results show that the method with the best effect is fixing the armoured outcropping thermocouple into the small hole of the workpiece by brazing.In this paper,the valid method is provided for the measurement of cooling curves of practical workpieces.

关 键 词：冷却曲线 热电偶 淬火 CAD 

分 类 号：TG156.3[金属学及工艺—热处理] TG155.91[金属学及工艺—金属学]