Abstract
This paper presents a design method of the forming groove-to-separating groove rolling sequence used in slit rolling process. Based on the equivalent rectangle approximation, we have designed the forming groove which produces a peanut-shaped cross section via rolling from workpiece with an inlet (incoming) square cross section. The separating groove is designed by lowering its width and height in the ratio of 1:3 for the given reduction ratio. With the forming groove and separating groove designed by the proposed design method, we have performed a pilot rolling test at high temperature (around 1000°C) using low carbon (0.1%C) steel and have also carried out finite element analysis to examine the expansibility of the proposed design method. The Results reveal that if the ratio of the roll diameter over the side length of a square is in the range of 4.0 ∼ 8.0, the design method proposed in this study can be systematically applied to design the forming groove-to-separating groove without relying on in-house databases and/or on-site experience.
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This paper was recommended for publication in revised form by Editor Maenghyo Cho
Doohyun Na received his bachelor’s degree in 2007 and Master’s degree in 2009 in Mechanical Engineering from Chung-Ang University. His research area is mainly the thermal fatigue crack growth behavior of roll in hot strip rolling. He is currently doing his Ph.D in the Department of Mechanical Engineering, Chung -Ang University, Seoul, Korea.
Sangheum Cho received the Bachelor’s degree in Mechanical Engineering from Chung-Ang University, Korea, in 2010. Sangheum Cho, he is currently a M.S. student in Chung-Ang University, Seoul, Korea.
Youngseog Lee received the B.S. in Mechanical Engineering from Pusan National University, Korea, in 1989. He then received the M.S. and Ph.D. degrees from Case Western Reserve University, Cleveland, Ohio, USA, in 1992 and 1997, respectively. Until 2003, he worked as a researcher at POSCO Technical Research Laboratories, Pohang, Korea. He is currently an Associate Professor in the Department of Mechanical Engineering, Chung-Ang University, Seoul, Korea. He is interested in computational fracture mechanics and hot rolling process.
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Na, D.H., Cho, S.H. & Lee, Y. Experimental and numerical studies for the forming groove and separating groove design in slit rolling process. J Mech Sci Technol 25, 2439–2446 (2011). https://doi.org/10.1007/s12206-011-0714-3
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DOI: https://doi.org/10.1007/s12206-011-0714-3