搅拌摩擦焊中的测温研究
Study on Thermometry During Friction Stir Welding
胡亚真， 白 钢， 付春坤， 苏利龙， 高大路
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作者单位：（西北工业大学 陕西省摩擦焊接重点实验室， 陕西 西安 710072）
中文关键字：热电偶测温； 红外仪测温； 滞后性；发射率；误差校正
英文关键字：thermo-couple; thermometry; infrared instrument; hysteresis properties; emissivity; correction
中文摘要：热电偶测温和红外仪测温都是现代测温技术中的主要测温方法。但由于热电偶测温的滞后性和红外仪测温易受发射率影响的原因，测温的准确度难以提高。在基于搅拌摩擦焊接动态测温试验基础上，本文提出了一种根据热电偶测温原理对热电偶测温动态误差进行校正的方法，并通过红外仪测温对校正结果进行了检验，取得了较理想的结果，对提高测温准确度具有一定的意义。
英文摘要：Thermo-couple and infrared instrument are both important thermometry instrument during modern thermometry practice, but because of the proper hysteretic properties of thermo-couple and the emittance of infrared instrument, the accuracy of thermometry can't be improved. A correction way based on the thermocouple thermometry principle during friction stir welding was introduced, and the correct result was checked by infrared instrument. It has a significance on improving the accuracy of thermometry.