| 摘要 |
PROBLEM TO BE SOLVED: To provide a flaw inspection method of a cast piece, capable of increasing lift-off and capable of inspecting cracks of a cast piece in a high temperature state, immediately after casting without having to widen the observation range, and to provide a flaw inspection device therefor. SOLUTION: The flaw inspection method of the cast piece has a radiation step of radiating an electromagnetic wave toward the surface of the cast piece, a step of measuring the reflection intensity of electromagnetic waves reflected from the surface of the cast piece and a step of detecting a crack flaw of the cast piece, on the basis of the reflection intensity. Furthermore, the flaw inspection device of the cast piece has a radiation means for radiating the electromagnetic waves toward the surface of the cast piece that they converge to the surface of the cast piece, a measuring means for measuring the reflection intensity of the electromagnetic waves reflected from the surface of the cast piece and a flaw detection means for detecting the crack flaw of the cast piece, on the basis of the reflection intensity. COPYRIGHT: (C)2008,JPO&INPIT |
