Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Development of High Strength Center-pillar by High Frequency Induction Heating

고주파유도가열에 의한 고강도 센터필라 개발

  • 손진혁 (울산대학교 대학원 기계자동차공학과) ;
  • 염영진 (울산대학교 기계자동차공학부) ;
  • 김원혁 ((주)엠에스오토텍 기술연구소) ;
  • 황정복 ((주)엠에스오토텍 기술연구소) ;
  • 김선웅 ((주)엠에스오토텍 기술연구소) ;
  • 유승조 ((주)엠에스오토텍 기술연구소) ;
  • 이현우 ((주)엠에스오토텍 기술연구소)
  • Published : 2008.06.01
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Abstract

An high frequency induction hardening technology of vehicle body press-formed of thin sheet steel has been developed to increase the strength of vehicle body parts locally by high frequency induction heating, thereby eliminating the need for reinforcements. And this technique for increasing the tensile strength of sheet steel was practically applied to the front floor cross member and center pillar reinforcement of a passenger car. The side impact behavior has been investigated when induction hardening technology is applied to the conventional low-carbon steel and weight reduction of an automotive body is expected. In this paper, basic experiments were performed for the hat-shaped specimen under high frequency induction heating process. Martensitic transformation was found in the heating zone through microscopic observation which showed higher hardness. In addition, the hardness and strength of the center-pillar specimen made of boron steel increased remarkably by high frequency induction heating.

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References

  1. Shibata M., Oonishi M., Makino K. and Kurach S., 1998, “Method of Improving Side Impact Protection Performance by Induction Hardening of Body Reinforcement,” American Society of Automotive Engineers-International Congress and Exposition, SAE Technical Paper Series 980550, pp. 105-117
  2. Bae G.H., Song J.H., Huh H. and Kim S.H., 2005, “Optimum Design of a Center-Pillar Model with a Simplified Side Impact Analysis,” Transactions of the Korean Society of Automotive Engineers, Vol. 13, No. 6, pp. 84-92
  3. Park J.C. and Bae D.H., 2003, “The Development of Automotive Parts Technologies with high Strength Steel,” Final Report of Manufacturing Technologies for High Strength Automotive Steels
  4. Hong S.O., Kim H.B. and Cho G.J., 2003, “A Study on Improvement of Workpiece Deformation in High Frequency Heat Treatment,” Journal of the Korean Society of Manufacturing Process Engineers, Vol. 2, No. 2, pp. 31-36
  5. Yum Y.J, Son J.H, Kim W.H., Hwang J.B. and Kim S.U., 2007, “Development of High Strength Automotive Part by High Frequency Induction Heating”, Proceedings of the KSME 2007 Fall Annual Meeting, pp. 7-12
  6. Yamanaka K. and Ohmori Y., 1977, “Effect of Boron on Transformation of Low-carbon Low-alloy Steels,” Transactions of the Iron and Steel Institute of Japan, Vol. 17, pp. 92-101
  7. Youn Y.H., 1994, “Estimation of Vehicle Structure and Occupant Protections on Side Impact by a Simultaneous Method CC-CTP,” Journal of the Korean Society of Automotive Engineers, 943846, pp. 378-383

Cited by

  1. Construction of Vehicle Door Impact Beam Using Hot Stamping Technology vol.34, pp.6, 2010, https://doi.org/10.3795/KSME-A.2010.34.6.797