发明名称 |
TUBULAR OBJECT ULTRASONIC TEST DEVICE AND ULTRASONIC TEST METHOD |
摘要 |
The present invention has a structure capable of detecting the scattered-type penetrator having oxides each with the size of several µm sparsely and widely dispersed. Specifically, the structure includes a wave transmission unit 6 for transmitting an ultrasonic wave to the welded surface of the welded portion 2 in a pipe axial direction of the pipe 1 such that the beam width of a transmission beam 8 is brought into a range from 0.5 mm to 2.5 mm, and a wave reception unit 7 for receiving at least a portion of the reflection wave (reception beam 9) at the welded surface. The wave transmission unit 6 and the wave reception unit 7 include transmission/reception units formed of different groups of transducer elements on at least one or more array probes 5 arranged in the circumferential direction of the pipe. |
申请公布号 |
EP2124045(A4) |
申请公布日期 |
2014.12.03 |
申请号 |
EP20070744096 |
申请日期 |
2007.05.18 |
申请人 |
JFE STEEL CORPORATION |
发明人 |
IIZUKA, YUKINORI;KENMOCHI, KAZUHITO;YOKOYAMA, HIROYASU;INOUE, TOMOHIRO;SAKASHITA, SHIGETO |
分类号 |
G01N29/04;G01N29/12;G01N29/26;G01N29/44 |
主分类号 |
G01N29/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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