Advanced induction heating system for hot stamping
- 42 Downloads
The development of a rapid uniform heating process for blanks is needed to perform hot stamping processes. To solve the problem of inhomogeneous temperature distribution in conventional induction heating systems, a heating block has been added to an induction system and investigated to determine if it can achieve rapid and uniform blank heating. To characterize the effects of incorporating the heating block, the temperature distributions of various coil geometry have been experimentally analyzed. The results show that the proposed induction heating system makes it possible to achieve rapid and uniform blank heating, which is used to conduct stable hot stamping. The mechanical properties of a hot stamped part confirm that the proposed heating method is a feasible alternative method for hot stamping products, and that it yields excellent results. This system for the reduction of heating time requires less installation space compared to a conventional electric furnace and achieves uniform heating, which results in improved product quality and reduced manufacturing costs.
KeywordsHot stamping Induction heating Heating block Boron alloyed steel Heating time
Unable to display preview. Download preview PDF.
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (no. 2012R1A5A1048294).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 1.Berglund G (2008) The history of hardening of boron steel in northern Sweden. In: 1st International Conference on Hot Sheet Metal Forming of High-Performance Steel, Kassel, Germany, pp 175–177Google Scholar
- 2.Aspacher J (2008) Forming hardening concepts. In: 1st International Conference on Hot Sheet Metal Forming of High-Performance Steel, Kassel, Germany, pp 77–81Google Scholar
- 3.Merklein M, Lechler J (2008) Determination of material and process characteristics for hot stamping processes of quenchable ultra high strength steels with respect to a FE-based process design. SAE World Congress: Innovations in Steel and Applications of Advanced High Strength Steels for Automobile Structures, Paper No. 2008–0853CrossRefGoogle Scholar
- 8.Lehmann H (2011) Developments in the field of Schwartz heat treatment furnaces for press hardening industry. Proceedings of 3rd International Conference on Hot Sheet Metal Forming of High-Performance Steel. Kassel, Germany, pp 171–180Google Scholar
- 11.Kolleck R, Veit R, Hofmann H, Lenze FJ (2008) Alternative heating concepts for hot sheet metal forming. In: 1st International Conference on Hot Sheet Metal Forming of High-Performance Steel Kassel, Germany, pp 239–246Google Scholar
- 12.Behrens BA, Hubner S, Demir D (2008) Conductive heating system for hot sheet metal forming. In: 1st International Conference on Hot Sheet Metal Forming of High-Performance Steel. Kassel, Germany, pp 63–68Google Scholar
- 13.Behrens BA, Hübner S, Schrotter J, Ohe J (2015) Conductive heating opens up various new opportunities in hot stamping. Proceedings of 5th International Conference on Accuracy in Forming Technology. Toronto, Canada, pp 157–173Google Scholar
- 25.Ploshikhin V, Prihodovsky A, Kaiser J, Bisping R, Linder H, Lengsdorf C, Roll K (2011) New heating technology for furnace-free press hardening process, in: Tools and technologies for processing ultra-high strength materials, Graz, AustriaGoogle Scholar
- 26.Ploshikhin V, Prihodovsky A, Kaiser J, Skutella L (2013) Contact heating—new heating technology for heat treatment and hot forming, in: Tools and Technologies for Processing Ultra High Strength Materials, Graz, AustriaGoogle Scholar
- 28.Zinn S, Semiatin SL (1998) Elements of induction heating: design, control, and applications. ASM International, OhioGoogle Scholar
- 29.Hayt WH (1989) Engineering electromagnetics, 5th edn. McGraw-HillGoogle Scholar
- 31.Weiner L, Chiotti P, Wilhelm HA (1952) Temperature dependence of electrical resistivity of metals. Ames Laboratory ISC Technical Reports 58Google Scholar