| 摘要 |
A method of manufacturing a reference gauge for flaw inspection capable of manufacturing a high quality reference gauge for flaw inspection capable of accurately inspecting whether or not the internal flaw of an inspected object can meet the requirement of a maintenance standard. The reference gauge (1) for flaw inspection is manufactured by integrating a first piece with a second piece (3) by diffusion bonding and sealingly forming a recessed groove meeting the requirement of the maintenance standard therein. The reference gauge for flaw inspection is formed by processing the recessed groove (4) in the joined surface (2a) or (3a) or end face of the first piece (2) and the second piece (3) by laser processing beforehand, forming these pieces integrally with each other, and diffusion-bonding them by a HIP device.
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