Crankshaft induction quenching deformation control method
By setting a phase control range in the circumferential direction of the crankshaft connecting rod journal and using a servo motor to drive and adjust the heating power, the deformation problem during crankshaft quenching was solved, achieving temperature uniformity and stress reduction, and improving the mechanical properties and life of the crankshaft.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING RESEARCH INSTITUTE OF MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD CAM
- Filing Date
- 2026-06-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing crankshaft quenching equipment fails to effectively control quenching deformation during heating and cooling processes, resulting in uneven stress distribution inside the crankshaft and causing deformation.
By setting multiple phase control zones circumferentially on the connecting rod journal of the crankshaft, and using a servo motor to drive the crankshaft to rotate, the induction heating power is adjusted according to the crankshaft position and speed information to ensure that the power of each phase region matches the phase control zone, thereby achieving temperature uniformity control.
This reduces deformation caused by internal stress in the crankshaft, improves the temperature control accuracy and stability during the quenching process, and ensures the uniformity of the crankshaft's mechanical properties and its service life.
Smart Images
Figure CN122405955A_ABST