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平直度传感器安装在轧机出口侧辊缝与X射线测厚仪之间。传感器的原理是以带材受到机械应力时导磁率改变为根据的。传感器的主要部分是在置于带材上下两侧的U形铁芯上各缠绕一个线圈,在一个线圈上通以交流电就构成激磁器,使气隙中产生感应磁。一部分磁将通过与轧制方向平行的带材,其余即在当作检测器的另一个线圈中产生一个感应电压。如果带村的平直度使张应力发生局部的变化,那么通过带材的磁通成比
The flatness sensor is mounted between the roll gap on the exit side of the mill and the X-ray thickness gauge. The principle of the sensor is based on the permeability of the strip as a function of mechanical stress. The main part of the sensor is placed on the upper and lower sides of the strip on the U-shaped core of each winding a coil, in a coil through the AC constitutes an exciter, the air gap in the induced magnetic. A portion of the magnet will pass through the strip parallel to the rolling direction and the rest will generate an induced voltage in the other coil as the detector. If the straightness of the band changes the tension locally, the flux passing through the strip becomes