Torsion bar is an important part in the car. Because the car is in running process, the torsion bar will withstand the huge friction, so it is worn faster. In order to meet the needs of the torsion bar in working, we should improve its surface wear resistance and its service life for quenching heat treatment. It's the best choice of using medium frequency induction heating equipment and the effect is very various.
After torsion bar is quenched by the equipment, its surface has a hardened layer about 2mm. Precisely because of this hardened layer, it makes the hardness of the torsion bar after quenching up to between 55HRC and 60HRC, greatly increasing service life. And its hardening also the needs of its working.
The equipment uses voltage-type resonant frequency for tracking, so the efficiency is high, and there are significant energy-saving effect. When torsion bar is quenched by it, the surface's hardening layer can be controlled by adjusting the work power of the equipment according to the need, so that the martensite structure of the hardened layer is finer, and the hardness, strength and toughness are relatively high. After quenching, the torsion bar's core can maintain good plasticity and toughness, so the impact toughness, fatigue strength and wear resistance, etc. have greatly improved to meet the work needs.