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Behaviour of longitudinal cracks on slab surfaces in V-H rolling processes

Journal Article


Abstract


  • The behaviour of longitudinal cracks on slab surfaces in multi-pass vertical-horizontal rolling processes was simulated by the finite element method (FEM). The influence of friction coefficients and fillet radii of grooved edge rolls on the closure and growth of cracks were analysed in regard to crack shape and crack length elongation ratio. The results indicate that the crack width increases both with increasing friction coefficient and with increasing fillet radii of the grooved edger rolls; the crack length increases as the fillet radii increase in Vi and Hi passes, and decreases as the fillet radii increase in V2 - H3 rolling. Moreover, the cracks become longer under a higher friction coefficient. Experiments of the behaviour of longitudinal cracks on slab surfaces in multi-pass V-H rolling processes were investigated taking lead as model material for the hot rolling of steel. The calculated results showed similar deformation variations compared to the experimental ones.

Authors


  •   Yu, Hai Liang.
  •   Liu, Xianghua (external author)
  •   Ren, Xiao-Jia (external author)

Publication Date


  • 2008

Citation


  • Yu, H., Liu, X. & Ren, X. (2008). Behaviour of longitudinal cracks on slab surfaces in V-H rolling processes. Steel Research International, 79 (7), 536-542.

Scopus Eid


  • 2-s2.0-47649108447

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/113

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 536

End Page


  • 542

Volume


  • 79

Issue


  • 7

Place Of Publication


  • Germany

Abstract


  • The behaviour of longitudinal cracks on slab surfaces in multi-pass vertical-horizontal rolling processes was simulated by the finite element method (FEM). The influence of friction coefficients and fillet radii of grooved edge rolls on the closure and growth of cracks were analysed in regard to crack shape and crack length elongation ratio. The results indicate that the crack width increases both with increasing friction coefficient and with increasing fillet radii of the grooved edger rolls; the crack length increases as the fillet radii increase in Vi and Hi passes, and decreases as the fillet radii increase in V2 - H3 rolling. Moreover, the cracks become longer under a higher friction coefficient. Experiments of the behaviour of longitudinal cracks on slab surfaces in multi-pass V-H rolling processes were investigated taking lead as model material for the hot rolling of steel. The calculated results showed similar deformation variations compared to the experimental ones.

Authors


  •   Yu, Hai Liang.
  •   Liu, Xianghua (external author)
  •   Ren, Xiao-Jia (external author)

Publication Date


  • 2008

Citation


  • Yu, H., Liu, X. & Ren, X. (2008). Behaviour of longitudinal cracks on slab surfaces in V-H rolling processes. Steel Research International, 79 (7), 536-542.

Scopus Eid


  • 2-s2.0-47649108447

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/113

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 536

End Page


  • 542

Volume


  • 79

Issue


  • 7

Place Of Publication


  • Germany