The main clutch shaft uses a medium frequency induction heating machine for induction quenching. How is the process determined?

As an important part of the engine, the main clutch shaft must withstand huge friction during its working process. For this reason, we often use a medium frequency induction heating machine for induction quenching to improve the wear resistance, hardness and service life of the workpiece. Today, we will talk about how to determine the induction quenching process of the main clutch shaft.

The material used for the main clutch shaft is 35CrMO, the quenching layer depth is 1-2mm, and the hardness is 52~57HRC. How to determine the heat treatment process?

Determination of process plan

Although the effective hardening layer depth of high-frequency quenching equipment is 1mm, it is aimed at optical shaft parts. For gear parts, when the current frequency is too high, the tooth top temperature is high and the tooth root temperature is low, making it difficult to obtain a hardened layer distributed along the tooth profile. It is theoretically feasible to use an 8000Hz medium-frequency induction heating unit to perform medium-frequency quenching of the main clutch shaft, and it can also meet the technical requirements of a layer depth of 1-2mm. However, the main clutch shaft part is hollow and thin-walled and has splines at both ends, so it is easy to heat through and be quenched during the heating process. During induction quenching, the surface of the part is in a high-temperature distribution state. The heat is transferred not only by the surrounding cooling medium, but also by conduction to the unheated inner layer and core. Therefore, the cooling rate is faster. At the same time, the wall thickness of the thin end of the part is about 3.16mm. Under the action of heat conduction, it can easily penetrate heat and be quenched. Since this part is hollow and thin-walled, it is difficult to achieve the technical requirement of a hardened layer depth of 1 to 2 mm by only using an 8000Hz intermediate frequency quenching unit to perform intermediate frequency quenching on the main clutch shaft. For this reason, problems that cannot be solved by the equipment and parts themselves can only be solved from the perspective of technology.

Zhengzhou Gou's is a manufacturer specializing in the production of medium frequency induction heating machines. The equipment produced has complete functions and is easy to operate. It is a good equipment for heat treatment of the main clutch shaft. If you would like to know more about heat treatment of main clutch shaft please feel free to contact us.