Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Process Design of Automobile Seat Rail Lower Parts using Ultra-High Strength, DP980 Steel

980MPa급 초고장력 강판을 이용한 자동차용 시트 레일 로어 부품의 성형공정 설계

  • 박동환 (경북하이브리드부품연구원) ;
  • 탁윤학 (경북하이브리드부품연구원) ;
  • 권혁홍 (대진대학교 컴퓨터응용기계공학과)
  • Received : 2018.01.01
  • Accepted : 2018.02.02
  • Published : 2018.04.30
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Abstract

The purpose of this study is to develop a process for forming a MPa ultra-high strength steel sheet to reduce weight and improve product strength. To do this, we performed the initial process design based on empirical formulas in a handbook and experience of skilled engineers, and researched the effects of major process variables on spring back by analyzing the forming analysis and experimental results. This paper suggests an optimal process design of the seat rail lower parts, using a MPa ultra-high strength steel sheet. This satisfies the dimensional accuracy and strength requirements for the product.

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References

  1. Kim, D. H., Jung, D. W., "Roll Forming Analysis for High Strength Steel Bumper Process," Journal of Korean Society of Precision Engineering, Vol. 30, No. 8, pp. 797-801, 2013. https://doi.org/10.7736/KSPE.2013.30.8.797
  2. Kim, M. J., Oh, W. J., Shin, D. C., Lee, C. M. , "A Study on the Development of Forming Process for a Compressor Shell Body," Journal of Korean Society of Precision Engineering, Vol. 33, No. 8, pp. 635-640, 2016. https://doi.org/10.7736/KSPE.2016.33.8.635
  3. Park, J. S., Choi, H. J., Kim, S. H., "Improvement in Prediction Accuracy of Spring back for Stamping CAE Considering Tool Deformation," Transactions of Materials Processing, Vol. 23, No. 6, pp. 380-385, 2014. https://doi.org/10.5228/KSTP.2014.23.6.380
  4. Hong, S., Hwang, J. H., "Bead Optimization to Reduce Spring back of Sheet Metal Forming using High Strength Steel," Journal of Korean Society of Manufacturing Technology Engineers, Vol. 23, No. 4, pp. 350-354, 2014. https://doi.org/10.7735/ksmte.2014.23.4.350
  5. Song, J. H., Kim, S. H., Huh, H., Park, S. H., "Stress-Based Spring back Reduction of an AHSS Front Side Member," Transactions of Materials Processing, Vol. 15, No. 4, pp. 295-303, 2006. https://doi.org/10.5228/KSPP.2006.15.4.295
  6. Bang, G. B., Seong, H. S., Kwak, H. S., Kim, C., "A Study on Stamping of the Center Pillar (High-Strength Steel 780 MPa) Using Finite Element Analysis," Transactions of Materials Processing, Vol. 26, No. 2, pp. 87-94, 2017. https://doi.org/10.5228/KSTP.2017.26.2.87
  7. Choi, B. H., Lee, J. W., Kim, S. H., Lee, M. G., Kim, H. K., "Comparison of Spring back Modes in the Stamping Process of an S-rail with HSS according to the Hardening Model," Transactions of Materials Processing, Vol. 22, No. 1, pp. 30-35, 2013. https://doi.org/10.5228/KSTP.2013.22.1.30
  8. Park, S. C., Park, T., Koh, Y., Seok, D. Y., Kuwabara, T., Noma, N., Chung, K., "Spring back Prediction of MS1470 Steel Sheets Based on a Non-linear Kinematic Hardening Model," Transactions of Materials Processing, Vol. 22, No. 6, pp. 303-309, 2013. https://doi.org/10.5228/KSTP.2013.22.6.303
  9. Kim, K. T., Kim, S. H., Yoo, K. H., Lee, C. W., Shim, H. B., "Application of Spring back Analysis in the Development of a Reinforce Center Pillar Stamping Die," Transactions of Materials Processing, Vol. 23, No. 5, pp. 297-302, 2014. https://doi.org/10.5228/KSTP.2014.23.5.297
  10. Jung, D. G., Kim, S. H., Kim, M. S., Lee, T. G., Kim, H. K., "Investigation of Shape Accuracy in the Forming of Thin-walled S-rail with Classification of Spring back Modes," Transactions of Materials Processing, Vol. 22, No. 8, pp. 477-485, 2013. https://doi.org/10.5228/KSTP.2013.22.8.477
  11. Ko, D. C., An, J. H., Jang, M. J., Bae, J. H., Kim, C. H., Kim, B. M., "Process Design of Seat Rail in Automobile by the Advanced High Strength Steel of DP780," Transactions of Materials Processing, Vol. 17, No. 3, pp. 197-202, 2008. https://doi.org/10.5228/KSPP.2008.17.3.197
  12. Park, D. H., Kwon, H. H., "Development of Au tomotive Seat Rail Parts for Improving Shape Fixability of Ultra High Strength Steel of 980MPa," Journal of Korean Society of Manufacturing Process Engineers, Vol. 15, No. 5, pp. 137-144, 2016. https://doi.org/10.14775/ksmpe.2016.15.5.137
  13. Park, D. H., Yun, J. J., Moon, H. D., Lee, T. G., "The Development of Seat Track Parts Using Shape Freeze in UHSS," Journal of Korean Society of Manufacturing Technology Engineers, Vol. 26, No. 1, pp. 59-65, 2017. https://doi.org/10.7735/ksmte.2017.26.1.59
  14. Lee, C. M., Kim, J. H., Oh, W. J., Ryu, B. H., "A Study on the Analysis for Upper Seat Track of Automobile Using 1180MPa Ultra-High Strength Steel," Journal of Korean Society of Precision Engineering, Vol. 34, No. 8, pp. 525-531, 2017. https://doi.org/10.7736/KSPE.2017.34.8.525
  15. Kwon, S. H., Lee, H. S., Lee, Y. S., Kim, S. W., Jung, C. Y., Hong, S., "Compensation Design to Reduce Spring back in Sheet Metal Forming of 1.2GPa Ultra High Strength Steel," Transactions of Materials Processing, Vol. 25, No. 5, pp. 295-300, 2016. https://doi.org/10.5228/KSTP.2016.25.5.295
  16. Suh, C. H., Jung, Y. C., Lim, Y. H., Yun, H. Y., Lee, K. H., Kim, Y. S., "The Effects of Process Parameters of Multi-Stage Forming on Spring back for a U-Channel Made of Ultra-High Strength Steel," The Korean Society of Mechanical Engineers, Vol. 36, No. 3, pp. 283-288, 2012. https://doi.org/10.3795/KSME-A.2012.36.3.283

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