The half shaft is an important structural part for the rear axle of the car to be subjected to torque and a certain impact force, and is one of the main components for transmitting power. The half shaft is subjected to huge friction during the working process. We usually use high-frequency induction hardening equipment to quench and heat-treat it to improve its hardness, wear resistance and service life.
The half shaft quenching layer is generally between 2.5-5mm, and the hardness reaches 45-58HRC after quenching. It is quenched and heat-treated by a high-frequency induction hardening equipment. The heating temperature is 840-860°C, and then water is used as the cooling medium for cooling and heat treatment. The cooling water flow rate is not less than 10m/s, and the surface compressive stress of the workpiece after quenching can reach 700- 800MPa, after tempering at 250°C, it will drop to 400-500MPa.
Advantages of high frequency induction hardening equipment
1. There is no need for overall heating, the deformation of the workpiece is small, and the power consumption is small.
2. After surface quenching, the surface layer of the workpiece has a relatively large compressive internal stress, and the workpiece has a high resistance to fatigue fracture.2. After surface quenching, the surface layer of the workpiece has a relatively large compressive internal stress, and the workpiece has a high resistance to fatigue fracture.
3. The heating speed is fast, and the oxidation and decarburization of the workpiece surface is relatively light.
4. IGBT module is used to save energy and electricity: 30% less electricity than the tube type, 20% less electricity than the thyristor intermediate frequency.
5. The surface hardened layer can be adjusted according to the needs, easy to control.
6. Adopt environment-friendly quenching medium and non-polluting induction heating technology, which will not affect the health of employees and the environment.
en 
cn 
jp 
ko 
de 
es 
it 
ru 
pt 
vi 
th 
pl 
