Induction Heat Treatment of Fasteners: Process Parameters, Temperature Uniformity, and Modeling-Based Optimization — A systematic Review & case study

DOI

10.2991/978-94-6239-727-9_29How to use a DOI?

Keywords

Induction heating; Fasteners; Surface hardening; Temperature uniformity; Coil design; Process optimization

Abstract

Over the years, induction heating has become a widely used method for heat treating fasteners because it delivers heat quickly and exactly where it’s needed. This localized control is critical in a production environment. Heat can be applied to the heads of bolts or threads (or both) in seconds with significantly less energy waste than other methods like furnace heat treating. However, generating a consistent temperature across a threaded part (like a bolt) is much more complicated than it appears. Factors such as the grooves of the threads, the presence of sharp edges near the head of the bolt, and the fact that electromagnetic currents like to be near the surface increase the complexity of heating the part. When an induction coil heats a small steel bolt, there is a noticeable difference in heating rates between different areas of the bolt. This difference in heating rates will lead to differences in hardness or microstructure within the bolt.

Due to these complexities, researchers have been examining the heating of small cylindrical parts (i.e., fasteners) in more detail. Several variables, such as frequency of the excitation source, affect how deeply the induced current will penetrate into the part. Likewise, other factors like power density and time will affect how quickly the surface temperature increases, sometimes before the heat has reached the center.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Rahul Chauhan
AU  - N. K. Chavda
PY  - 2026
DA  - 2026/07/22
TI  - Induction Heat Treatment of Fasteners: Process Parameters, Temperature Uniformity, and Modeling-Based Optimization — A systematic Review & case study
BT  - Proceedings of the International Conference on Sustainable Micro-Nano Materials & Innovative Technology (ICSUMMIT 2026)
PB  - Atlantis Press
SP  - 394
EP  - 412
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6239-727-9_29
DO  - 10.2991/978-94-6239-727-9_29
ID  - Chauhan2026
ER  -