What is induction hardening?

Induction hardening is a production process that creates surface hardening of the conductive material by placing the material in a large, rapidly fluctuating magnetic field. The magnetic field induces a temporary electrical current that warms the material but only to somewhat shallow depth. The material is then immediately extinguished in the bathtub. Heating and sudden cooling causes the formation of crystals in the external layers of the material, but the core material is not affected and maintained by its original properties. This dual nature is a key characteristic of induction hardening. Thus, hardened metal does not slip easily, slips with an easier surface and resists wear. The song is also more fragile and can break or break more easily when hit or drop. Onpouze surface, the characteristics of hardness is obtained only by the surface. The rest of the piece retains the power of the original material.

heating of metal or other conductive material conductive or direct teThe breed causes the whole piece to heat up because the electrons are excited and become mobile, fast flowing from warmer areas to colder areas. In induction hardening, the outer electrons are "induced" to respond to fluctuating magnetic fields by producing electrical whirling currents. These currents flow in small circles when electrons respond to the constantly changing magnetic field. The heat has no means to be deeply done in the material.

Type, size and uniformity of crystals created during the stepping of induction hardening determine the final quality of the hardened piece. The material is subject to the phase of the Change of solid to the crystal called diffuse transformation. Atoms are essentially at the same time very short distance. In the steel there is a very hard crystalline structure known as Martensite usually the desired final form of the surface layer. Martensitic crystals are also found in other hardened materials, including ceramics.

applications that require strong, andLe smooth and hard surfaces are ideal candidates for induction hardening. Components with car drives, gears in many applications, tools requiring closely tolerance, forms and high -speed production operations that cut off part, all benefit from the two nature of induction hardened parts. The process is relatively cheap; The largest operating costs are energy input itself. Induction furnaces take place from the size of the table top to capacity that can handle the main components of the missile. Reproducible, high quality results are standard in these operations.