How to conduct flaw detection?
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The inner diameter of the cylinder is 1010, its thickness is 80, and the length of each cylinder section is 1820. It features spherical end caps; the maximum inner diameter of the nozzles on these end caps is 100. There are no manholes, and full penetration welding is required. How should flaw detection be carried out? Please ask an expert for advice.
You can use ultrasonic testing (UT) for inspection. First, ensure that the surfaces of the cylinder and the head are clean, free of oil and rust. Then, select the appropriate probe and frequency based on the material thickness; generally, a low-frequency probe can be used for thicker metals. Next, apply coupling agent to ensure good contact between the probe and the metal surface. Scan sequentially along the direction of the weld, while recording data and analyzing the echo signals to detect internal defects. For the joint area, special attention must be paid to the placement and angle of the probe to ensure comprehensive inspection of the weld zone. After the flaw detection is complete, be sure to prepare a flaw detection report documenting all issues found and their locations. .