Finite element analysis and practice of local induction heating  on threads of ultra-high strength bolts

doi:10.13251/j.issn.0254-6051.2023.12.046

Abstract

Abstract: Local induction tempering for ultra-high strength bolt with fast heating speed is high efficiency, green and environmental protection, and is gradually replacing the traditional lead bath tempering. However, the single coil design was time-consuming and labor-intensive in the process of adjusting, so a finite element model on local tempering heating of threads was built by COMSOL software. The correctness of the analysis model was verified by comparing with the experiment results. By adjusting and optimizing the coil design and process, the non-uniformity of axial and radial temperature during induction heating is greatly reduced, and ultimately the tempering hardness of the threaded part of the ultra-high strength bolt can meet the requirement of temper standard.

Key words: ultra-high strength, local tempering, finite element model, tempering hardness

CLC Number:

TG156.8

Sun Xiaojun, Yang Chenhui, He Liandong, Wang Xin, Zhang Yifan. Finite element analysis and practice of local induction heating on threads of ultra-high strength bolts[J]. Heat Treatment of Metals, 2023, 48(12): 281-284.

References

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Finite element analysis and practice of local induction heating on threads of ultra-high strength bolts

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