Selection of heating frequency of imishini yokuqeda imvamisa ephezulu

The high-frequency hardening equipment places the workpiece in an inductor wound with a hollow copper tube. After passing the medium-frequency or high-frequency alternating current, an induction current of the same frequency is formed on the surface of the workpiece, and the surface or part of the part is rapidly heated (a few seconds) Within a few seconds, the temperature can be increased to 800～1000℃, and the core is still close to room temperature. After a few seconds, spray (immersion) water cooling (or spray immersion oil cooling) quickly and immediately complete the immersion work, so that the surface or part of the workpiece can meet the corresponding hardness requirements.

Selection of heating frequency of high-frequency quenching equipment: The relationship between the depth δ (mm) of the induced current flowing into the surface of the workpiece at room temperature and the current frequency f (HZ) is that the frequency increases, the current penetration depth decreases, and the hardening layer decreases.