| 摘要 |
<p>PURPOSE:To secure a user demand level about a flaw on a surface in on-line by detecting a flaw, which deeper than a cutting margin, by an eddy current flow detector before cutting, and after a sizing process. CONSTITUTION:A wire rod, which is produced by rolling, is sized and machined to meet such a size and size precision as to enable a flaw detection or cutting work as a following process to be carried out. After a sizing process, a flaw is detected by an eddy current flaw detector. Although there are some flaws, which are removable by cutting work in the following process, during this flow detection, the detection is carried out in the depth which is deeper than a cutting margin for the purpose of detecting a flaw which is not removable in cutting work. As the flaw remaining after cutting is large enough to be detected, the flaw can be detected surely even when the detection precision is reduced by vibration of the wire rod. In this way, the quality which meets the demand of a user can be secured by the inspection in the surface cutting work line.</p> |
