Tappet Chill Depth Measuring by Magnetic Permeability and Inductance Displacement Meter

摘要

It is possible to measure different position along the axle direction of tappet. According to the maximum output of signal, the boundary of white iron structure and mottled iron structure can be deduced, and at the same time, it is possible to use inductance displacement meter to show the chill depth which is the distance from the boundary to the end.