Induction Hardening

Preparation of the Cast Part: Before induction hardening, the cast part is thoroughly cleaned to remove any coatings, oils, or dirt. This ensures optimal energy transfer during the induction heating phase.

Induction Heating: The cleaned part is placed within an induction coil that generates an alternating electromagnetic field. As the coil is energized, electric currents (known as eddy currents) flow through the surface of the metal, rapidly heating it to a temperature typically between 800°F and 1800°F (425°C to 980°C). The precise heating temperature depends on the material specifications and desired hardness levels.

Quenching: Once the desired temperature is reached, the part is immediately cooled through a quenching process. This usually involves immersion in oil or water, causing the surface layer to harden while the core remains softer and more ductile. The quenching medium can be tailored based on the specific requirements of the part, ensuring optimal results.

Tempering: To relieve any stresses introduced during hardening and to achieve the desired balance of hardness and toughness, a tempering process may follow. This involves reheating the part to a lower temperature, typically between 300°F and 600°F (150°C to 315°C), and then allowing it to cool slowly.

Final Inspection: Once the induction hardening process is complete, we conduct a thorough inspection using advanced techniques like hardness testing and metallography. This ensures that the cast part meets the required specifications for performance and longevity.