| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for inspecting and maintaining a billet capable of inspecting the billet with a high degree of accuracy without requiring operators' skill and capable of improving an operating efficiency by eliminating reexaminations, transfers to the maintenance equipment after the reexamination and transfers for the final examination. SOLUTION: After the maintenance process to maintain flaws examined by an automatic examination, a magnetic particle examination device to perform reexaminations of the maintenance portion, irradiating with a black light 3a from above and a billet grinder with magnetic particle examination device provided with the billet grinder to maintain flaws in series after the reexamination are provided so that the maintenance process after the automatic examination is combined into a line. A visible light 2 is arranged in the inspection department of the billet grinder with the magnetic particle examination device and, after the reexamination and flaws maintenance are executed in series, the final examination through the visual inspection continues to be executed.</p> |
