소성∙가공 (Transactions of Materials Processing)

  • 제18권5호
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  • Pages.377-384
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  • 2009
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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냉간압연공정에서 공정변수에 따른 엣지 크랙 성장에 관한 연구

Study of Edge Crack Growth According to Rolling Condition in Cold Rolling

  • 발행 : 2009.08.01
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초록

The shape of edge cracking in rolling process generally occurred "V" shape. This cracking is successively generated at width edge of strip. The edge cracking is developed to center of strip during rolling process. In the results, the strip is occurred fracture, and the productivity is gone down because of the extensive production time. Accordingly, we need to control crack propagation during rolling process. But, the control of cracking is very difficult in rolling process. Previously the studies of edge cracking were mainly performed on hot rolling process. In this paper, the shape of the edge cracking in rolling was estimated according to process conditions such as initial edge crack size, reduction ratio and tension using FE-simulation and the simplicity experiments on cold rolling process.

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참고문헌

  1. Y. Nobuki, I. Takashi, Y. Yoshinori, K. Akira, 2005, Influence of rolling condition on deformation of surface micro-defect in plate rolling, ISIJ, Vol. 91, No. 12, pp. 15-21
  2. I. Takashi, Y. Nobuki, Y. Yoshinori, T. Yuhi, 2003, Deformation analysis of surface defects on plate rolling, ISIJ, Vol.89, No. 11, pp. 50-57
  3. Y. Nobuki, Y. Yoshinori, I. Takashi, 2006, Deformation analysis of longitudinal surface micro-defects in flat rolling, ISIJ, Vol. 92, No. 11, pp. 19-24
  4. Y. Hai-liang, L. Xiang-hua, L. Chang-sheng, Y. Kusaba, 2006, Behavior of transversal crack on slab corner during V-H rolling process, J. Iron Steel Res. Inter., Vol. 13, No. 6, pp. 31-37 https://doi.org/10.1016/S1006-706X(06)60106-4
  5. H. L. Yu, X. H. Liu, Z. Y. Jiang, 2008, FE analysis of behavior of internal-longitudinal crack in a slab during vertical-horizontal rolling, Proc. the 8th asia-pacific Conf. Mater. Process., June 15-20, pp. 799-804
  6. H. L. Yu, X. H. Liu, G. D. Wang, 2008, Analysis of crack tip stress of transversal crack on slab corner during vertical-horizontal rolling process by FEM, J. Iron Steel Res. Inter., Vol. 15, No. 3, pp. 19-26 https://doi.org/10.1016/S1006-706X(08)60119-3
  7. H. L. Yu, X. H. Liu, H. Y. Bi, L. Q. Chen, 2009, Deformation behavior of inclusions in stainless steel strips during multi-pass cold rolling, J. Mater. Process. Technol. Vol. 209, pp. 455-461 https://doi.org/10.1016/j.jmatprotec.2008.02.016
  8. E. Ervasti, U. Stahlberg, 1999, Behavior of longitudinal surface cracks in the hot rolling of steel slabs, J. Mater. Process. Technol., Vol. 94, pp. 24-28 https://doi.org/10.1016/S0924-0136(99)00090-4
  9. E. Ervasti, U. Stahlberg, 1999, Transversal cracks and their behavior in the hot rolling of steel slabs, J. Mater. Process. Technol., Vol. 101, pp. 312-321 https://doi.org/10.1016/S0924-0136(99)00481-1
  10. M. G. Cockroft, D. J. Latham, 1968, Ductility and the workability of metals, J. Inst. Met., 96, pp. 33-39
  11. B. S. Shin, D. S. Choi, E. S, D. J. Lee, J. H. Lee, 2000, The Manufacturing Technique of Metal Rapid Products by the Ming Process, J. Kor. Soc. Precis. Eng., pp. 759-762