Method for judging influence of residual boron in carburizing steel on hardenability

The invention relates to a method for judging the influence of residual boron in carburizing steel on hardenability, which comprises the following steps of: processing a sample blank into two end-quenched samples after carrying out structure homogenization treatment on the sample blank; respectively carrying out end quenching treatment on the two end quenching samples under a first condition and a second condition; grinding a measuring surface on the end-quenched sample, and selecting a plurality of measuring points distributed along the axial direction of the end-quenched sample on the measuring surface; measuring the hardness value of the measuring point; calculating the hardness difference between the measuring points which have the same distance with the quenching end on the two end quenching samples; and based on the hardness difference, the influence of the residual boron in the carburizing steel on the hardenability is obtained. The method comprises the following steps: respectively carrying out end qu