公开(公告)号：US3862558A

公开(公告)日：1975-01-28

申请号：US31877072

申请日：1972-12-27

申请人： NIPPON STEEL CORP

发明人： YOSHITANI YUTAKA ,  HAMAZAKI YOSHIHARU

IPC分类号： B21B37/16 ,  B21B38/04 ,  G01B7/12 ,  G01B7/32 ,  B21B37/00

CPC分类号： G01B7/125 ,  B21B37/165 ,  B21B38/04 ,  G01B7/32

摘要： Two measuring coils are disposed on the oncoming and outrunning sides of a rolling mill stand respectively and an electrically conductive workpiece passes through the coils and stand. One oscillator including each coil responds to a pass of the workpiece through the associated coil to change in oscillation frequency. A difference between changes in frequency of both oscillators or a ratio between them is measured to provide a measure of a difference or a ratio between cross sectional areas of the workpiece in the planes of both coils.

摘要翻译： 两个测量线圈分别设置在轧机机架的迎面而来的外侧，导电工件通过线圈和支架。 包括每个线圈的一个振荡器响应于通过相关线圈的工件通过以改变振荡频率。 测量两个振荡器的频率变化或它们之间的比率之间的差异，以提供在两个线圈的平面中的工件的横截面面积之间的差异或比率的量度。