通过分析声速在高温管道壁厚方向上的不均匀性以及壁温和壁厚对超声测厚的影响，研制了一套高温工业管道超声测厚系统，将试验得出的温度-厚度-声速之间的两维函数关系v=f(t，H0)嵌于所研制的高温测厚仪内。该方法与现场使用的便携式测厚仪结合在一起，能够根据壁温及壁厚快速进行数据转换获得校核过的声速，从而修正测厚数据，精度大为提高。

An ultrasonic thickness measurement system of high-temperature industrial pipe is developed which embeds the experimentally derived two-dimensional function V=f(T, H0) among temperature, thickness and sound velocity into the high-temperature thickness gauge, based on the analysis of the inhomogeneity of sound velocity in the high-temperature wall thickness direction and the effect of industrial pipe temperature and wall thickness on ultrasonic thickness measurement. The method is combined with the field portable thickness gauge for data conversion and sound velocity verification quickly according to the wall temperature and thickness. The measurement data is checked and the accuracy is greatly improved with the application of the algorithm.