在15～65 ℃环境下, 分析温度对普通超声波探头的声速、灵敏度的声学性能影响, 确定普通超声波探头的适用温度范围, 以及在适用温度范围内温度对超声波探头在碳钢中传播速度及灵敏度的影响。使用8 ℃环境标定参数在52 ℃环境下进行超声波在线检测, 并根据温度与探头在碳钢中传播速度及灵敏度关系, 对灵敏度进行修正, 并将修正结果与8 ℃环境标定参数及在线检测结果进行对比, 证实该检测方法的可行性。试验结果对高温气冷堆（HTR）的在役检测工作具有一定的指导意义。

The Ultrasonic velocity and amplitude value in carbon steel is gotten by the experiment in 15 ℃-65 ℃ scopes. The echo position and amplitude of artificial reflector with different temperatures is measured on the base of it, the correction method of measurement error and correction formula due to temperature variation is given. The position and amplitude of inspection result is corrected according to the correction formula in 52 ℃ environment, and by comparison with the result in 8 ℃. The research result will be available for the Ultrasonic inspection in the in-service inspection of HTR.