| 摘要 |
PURPOSE: To provide a nozzle flaw detecting device in which the displacement of a probe can be prevented. CONSTITUTION: This device has a traveling wheel body 7 having a major diameter part magnet wheel 3 capable of rolling along the major diameter part 2 of a nozzle 1 formed of a material to which magnet is attractable and a taper part magnet wheel 6 capable of rolling along a taper part 4 between the major diameter part 2 and minor diameter part 4 of the nozzle 1. Further, it has an ultrasonic flaw detection testing probe 9 supported by the traveling wheel body 7 through an arm mechanism 8; and a minor diameter part magnet wheel 11 capable of rolling along the minor diameter part 3 of the nozzle 1. The attracting force of the minor diameter part magnet wheel 11 compensates the reduction in adsorptive force of the major diameter part magnet wheel 3. |
