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Analysis of Crack Tip Stress of Transversal Crack on Slab Corner During Vertical-Horizontal Rolling Process by FEM

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Abstract

Behavior of transversal crack notched on slab corner during vertical-horizontal rolling process was simulated by FEM. The crack tip stress in the whole rolling process was obtained. Influences of the friction coefficient, the initial crack size, the edger roll profile, and the groove fillet radii of grooved edger roll on crack tip stress were analyzed. For vertical rolling, the tension stress appears at crack tip near the slab top surface and the compression stress appears at crack tip near the slab side surface for the flat edger roll; however, the compression stress appears at crack tip near the slab top surface and the tension stress appears at crack tip near the slab side surface in the exit stage for the grooved edger roll. For horizontal rolling, the tension stress appears at crack tip just at the exit stage for the flat edger roll, and the tension stress appears in whole rolling stage; the tension stress value near the slab side surface is much larger than that near the slab top surface for the grooved edger roll.

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Abbreviations

A, B, C, D, F:

Constant

d r :

Roll diameter

f:

Friction coefficient

h:

Slab exit thickness

hx:

Slab thickness at x position

Δh:

Slab draft

K:

Mean deformation resistance

l:

Contact arc length

P x :

Rolling pressure

S h :

Forward slip

T:

Temperature

ε:

True strain

ε̇:

True strain rate

σ:

Yield stress

γ:

Neutral angle

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Author information

Authors and Affiliations

  1. The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, Liaoning, 110004, China

    Hai-liang Yu (Doctor Candidate), Xiang-hua Liu & Guo-dong Wang

Authors
  1. Hai-liang Yu
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  2. Xiang-hua Liu
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  3. Guo-dong Wang
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Corresponding author

Correspondence to Hai-liang Yu.

Additional information

Foundation Item: Item Sponsored by State Basic Research Key Projects (973) of China (2006CB605208-1); National Natural Science Foundation of China (50534020)

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Yu, Hl., Liu, Xh. & Wang, Gd. Analysis of Crack Tip Stress of Transversal Crack on Slab Corner During Vertical-Horizontal Rolling Process by FEM. J. Iron Steel Res. Int. 15, 19–26 (2008). https://doi.org/10.1016/S1006-706X(08)60119-3

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  • DOI: https://doi.org/10.1016/S1006-706X(08)60119-3

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