一、工艺简介机床导轨电接触淬火,是利用铜滚轮电极在导轨表面接触,并按一定速度移动,此时加在滚轮电极及工件导轨上的低压大电流在接触瞬时产生接触电阻。接触点被加热到淬火温度(900℃以上),当滚轮移开后,导轨靠自身热传导而迅速冷却,因此铜滚轮所走过的轨迹表面即被淬硬。现在分析接触点的热量Q与什么因素有关。 First, the process Introduction Electrical contact quenching of the machine guide rail is the use of copper roller electrode in the rail surface contact, and move at a certain speed, this time added to the roller electrode and the workpiece rail on the low-voltage high current in the contact instantaneous contact resistance. The contact point is heated to a quenching temperature (above 900 ° C). When the roller is removed, the guide rail is rapidly cooled by its own heat conduction, so that the surface of the path traveled by the copper roller is hardened. Now analyze the contact point of the heat Q and what factors.