| 摘要 |
PURPOSE:To achieve a setup in changing a diameter and thickness of a pipe quickly and accurately by arranging a lift base for a seam welded pipe moving area, a holding base movable thereto, a mechanism following the movement of the seam welded tube therebelow. A support base movable in a circumferential direction of the seam welded pipe and a copying/moving mechanism about a seam part. CONSTITUTION:A seam welded pipe P with a seam part S right upward is transferred with a chain conveyer and a frame base 2 is provided above the transferring area through a lift frame 4 which can lift an ultrasonic flaw detector 1 to the moving area. A holding base 21 of a following mechanism 20 is provided on the underside of the lifting frame 4 in such a manner as to be movable horizontally perpendicular to a direction of transferring to support a plurality of flaw detection heads 49. A support base 31 is provided right below the holding base 21 and moving means 42 and 45 composing a copying mechanism 40, a rotary flat plate 48 and a pair of flaw detection heads 49, right and left, are provided below the support base through a support base plate 41. Thus, automatic positioning is possible without the use of a pipe for calibration when a diameter and thickness of a pipe are changed thereby enabling the altering of an angle of incidence without change of a probe along with a shortened handling time of a calibration pipe. |
