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Experimental and numerical studies for the forming groove and separating groove design in slit rolling process
D. H. NA, S. H. Cho and Y. Lee*
The Journal of Mechanical Science and Technology, vol. 25, no. 9, pp.2439-2446, 2011
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 1000oC) 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.
Keyword : Slit rolling; Forming groove; Separating groove; Groove design method |
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