High frequency
Describe | Local heat treatment of desired area through induction heating |
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Induction Heating | When power is given to the coil, magnetic lines are formed in the coil and the product. At this time, eddy current flows in the opposite direction and heat is generated by electric resistance. How to heat the product with this resistance heat |
Advantages |
- Local heat treatment only for the desired part: Low deformation - Rapid heating and cooling: Wear resistance, fatigue resistance, productivity improvement - Mainly applied to bending load or torque transmission parts |
Characteristic |
1. Dedicated coil or facility required according to the shape and heating pattern of the product 2. Heats only the surface rapidly by using alloy steel such as Cr-Mo, over medium carbon steel 3. Difference in hardening ability according to cooling method - Cooling rate Water> mixing Polymer> Oil 4. Heating section difference occurs according to frequency - The higher the frequency, the lower the current penetration depth (Inverse to square root) |