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Investigation of two square-to-round multipass rolling sequences by the slab-finite element method

Authors
Journal
International Journal of Machine Tools and Manufacture
0890-6955
Publisher
Elsevier
Publication Date
Volume
32
Issue
3
Identifiers
DOI: 10.1016/0890-6955(92)90005-2
Disciplines
  • Computer Science
  • Design

Abstract

Abstract With the spread and elongation taking place simultaneously in the roll gap, roll pass designs for shape rolling are difficult to analyze. In the past, a few three dimensional analyses have been attempted but due to the large computational effort required, even for simulating a single pass, they have not been applied to multipass rolling. This paper presents the simulation of square-to-round six pass hot rolling of stainless steel billet on a continuous mill by a finite-slab element computer code TASKS. Results are compared with an earlier TASKS simulation of square-to-round seven pass sequence. Even though the six pass sequence involves larger reduction in area than the seven pass sequence, it provides for a more uniform distribution in effective strains in the final product. Comparisons also indicate that the uniformity of area reduction in the roll gap of a pass and from pass to pass can be used as a criterion for roll pass design evaluation and improvement.

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