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http://dx.doi.org/10.3795/KSME-A.2010.34.9.1299

Experimental Investigation of Working Fracture in Silicon Steel Strip Occurring Due to Change in Roll-Gap Profile in Cold Rolling  

Byon, Sang-Min (Department of Mechanical Engineering, Dong-A Univ.)
Lee, Jae-Hyeon (Department of Mechanical Engineering, Dong-A Univ.)
Kim, Sang-Rok (Department of Mechanical Engineering, Dong-A Univ.)
Choi, Hyeon-Sik (Department of Mechanical Engineering, Dong-A Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.34, no.9, 2010 , pp. 1299-1304 More about this Journal
Abstract
We examined the working fracture behavior of a silicon-steel strip caused by deformation deviation by performing a pilot rolling test. The deformation deviation resulted in the edges (or center portion) of the strip being stretched and the other parts being compressed in the rolling direction; this was because of different degrees of deformation in these parts. We designed roll grooves shape to reflect the role of roll bending, which generates waviness in the strip in an actual cold rolling process, into the pilot rolling test. The material used in the rolling test was highsilicon steel (about 3%). The results of the test showed that the type of fracture in the strip specimen varied with the magnitude of the deformation deviation. The tensile stress produced at the strip edges because of the center waviness in the rolling direction was a crucial factor that resulted in edge cracking and a zigzag-shaped fracture at the center.
Keywords
Silicon-Steel Strip; Cold Rolling; Roll-Gap Profile; Working Fracture; Strip Wave;
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  • Reference
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