目前一般使用的电接触导轨淬火机的电极(即淬火滚轮) 的安装形式,均匀自由旋转。依靠电极对导轨面的作用力 P 所产生的磨擦力 F 转使本身滚动。而且转动力矩 F 转×R 必须大于导电轴与支架产生的摩擦力矩 F导×丫。曲于导电部分受结构限制一般不能太大,当电流密度很大 At present, the electrode (ie, quenching roller) of the electric contact guide harden machine generally used in the installation form is uniformly and freely rotated. Rely on the electrode on the rail surface force P generated by the friction force F itself to roll. And the rotational torque F × R must be greater than the conductive shaft and the friction torque generated by the bracket F guide × Ah. Quotations in the conductive part of the structure is generally not too large, when the current density is large