| 摘要 |
PURPOSE:To perform ultrasonic flaw-detection operation of a welded part of a steel pipe to be welded with a large diameter efficiently and positively. CONSTITUTION:In an automatic ultrasonic flaw detection method of the welded part of a steel pipe, all probes 2 are fitted to a pipe, the probes are fixed. a manipulator 1 is moved in the direction of a side edge part where a steel pipe 3 enters, and then the flaw of the steel pipe edge part is detected. After the edge part flaw detection ends, the fixing of the probes 2 is canceled, the flaw of the center part of the steel pipe 3 is detected, the edge part of the side where the steel pipe 3 is extracted is detected, the probes are fixed again, and the flaw of the edge part of the steel pipe 3 is detected, thus detecting the flaw of the entire length of the steel pipe welded part. |
