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Analysis of the bimetallic bars rolling during a skew rolling

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Author(s): S. Sawicki | P. Szota | H. Dyja

Journal: Archives of Materials Science and Engineering
ISSN 1897-2764

Volume: 32;
Issue: 1;
Start page: 53;
Date: 2008;
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Keywords: Numerical techniques | FEM | Rotary rolling | Bimetallic bars | Steel - steel resistant to corrosion

ABSTRACT
Purpose: Bimetallic bars which possess higher corrosion resistance and mechanical properties, it is the newkind of bimetallic bars which are better than standard bars. The bimetallic bars are more often applied in concreteconstruction. There are few methods which ensure a good strength of bimetallic layer bond. Hydrostatic extrusion,rotary rolling and explosive cladding are most often used methods.Design/methodology/approach: The simulations of the bar rolling in a three-high skew mill were carriedout using the Forge2005® commercial program.Findings: The higher value of yield stress of the cladding layer does not produce the effect of “flowing down” ofthis layer over the core surface and it’s folding between the rolls. The use of non-corrosive steel on plating layerassures receipt on a high durability and esthetics bimetallic bars.Practical implications: Bimetallic bars are chiefly used in the building industry at production of concreteconstructions, and as working elements in bridge building in aggressive environment.Originality/value: Production of bimetallic bars is very difficult. One from many problems during productionbimetallic bars is assurance good strength of bimetallic layer bond. A theoretical analysis of bimetallic bar rollingin a three-high skew mill is presented in the paper and the distributions of stress and strain intensities in thebimetallic bar during skew rolling are shown.
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