Abstract
According to the principle of ultrasonic phased array technology, the phased array inspection technology for butt weld of small-diameter pipe is developed. The ultrasonic phased array and ray inspection tests are carried out on the sample pipe of small-diameter tube with typical specification of heating surface in Inner Mongolia thermal power plant, and the evaluation results obtained by the two inspection methods are compared and analyzed. It can be seen from the comparison of testing results that ultrasonic phased array testing has more advantages than X-ray testing in defect detection rate and defect parameter measurement. At the same time, ultrasonic phased array testing also has the advantages of environmental protection, intuitiveness and high testing efficiency.
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