Roller sensor heated by longitudinal current

The wheel rafter and the outer surface of the supporting wheel bear friction and must be hardened. The early process was to use an open-close type inductor, which was heated and quenched at one time, and later improved into a semi-annular inductor, which is convenient for loading and unloading, but the wheel rafter has a deep layer Shallower. Recently, an enterprise in my country has changed the unilateral support wheel to a full-circle longitudinal current heating inductor (see picture), which allows the current to flow through the arc part and solves the problem of shallow depth of the arc part. For double-sided rollers, this type of sensor cannot be used because it cannot be nested.。