Online Detecting Carburized Gear Grinding Burn by Magnetoelastic Method

With 17CrNiMo6 steel carburized gears as example, firstly different degree of grinding burn test samples were prepared, and the grinding burn grade of these samples was classified by pickling method and metallographic method. Then by establishing the corresponding relationship curves between magnetoelastic characteristic values MP and the tooth surface micro-hardness or residual stress of the carburized gear samples with different grinding burn grade, it was verified that the magnetoelastic method could be used to accurately assess the grinding burn grade of carburized gears. Besides, by magnetoelastic method the grinding burn grade could be expressed quantitatively. On this basis, by introducing magnetoelastic method into the practical production inspection process, grinding burn online detecting of carburized gears was realized.