Brief Introduction of Rolling Pressure Measuring Instruments Used in Packaging Steel Strip Production

Brief Introduction of Rolling Pressure Measuring Instruments Used in Packaging Steel Strip Production
　　 Pressure measuring sensors (also called indenters) have piezomagnetic, resistance strain, capacitive and inductive types, and sometimes indirectly measure the rolling force by detecting the oil pressure in the hydraulic cylinder.
　　 Piezomagnetic indenter is a force-to-electric converter made by applying force on a silicon steel sheet, which changes the distribution of magnetic lines of force. It has three series of rectangle, circle and ring for selection. Its key component is composed of many silicon steel sheets overlapped and bonded together, similar to the iron core of a transformer. Piezomagnetic indenter has the characteristics of good anti-interference, reusable, large output signal, good overload performance and high measurement accuracy, but it is expensive and only used where necessary. The most domestic application is made by the Swedish ASEA Electric Company. The piezomagnetic indenter.
　　The resistance strain indenter is a phenomenon in which the resistance of the strain gauge (the inner wire) attached to the surface of the strain gauge (the inner wire) is deformed (stretched or shortened) when the elastic element is elastically deformed under pressure. It is generally used in racks that do not require very high rolling force detection accuracy.
　　 There are generally 3 installation positions for the pressure head: between the pressing screw and the upper roller bearing seat, between the lower roller bearing seat and the lower beam of the frame, and on the pressing nut. The specific installation position of the indenter depends on the conditions of the rolling mill.