Abstract:

In order to solve uneven hardness resulted fracture problems of the elastic coupling spring laminations paired with the spline shaft on diesel engine during the running of diesel locomotive, a medium frequency induction hardening process was adopted to replace the original laser surface quenching process, and a new medium frequency quenching inductor with corresponding unilateral induction quenching scheme was designed. The results show a good effect after loading on the locomotives.

Key words: spring lamination, medium frequency induction quenching, inductor