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There are various types of rolls are being used in Cold Rolling Mills according to their usability. They are varying in size shape and materials. The selection of material is dependent upon factors such as hardness, machinability, mechanical properties and strength. The chemical composition and manufacturing style of roll effects a lot in their working efficiency. In this work the mechanical properties which are essential for a work roll to be used in rolling mill for effective and quality rolling is being studied which also helps to find out the correct and optimum selection of material for selection of work roll of 20 Hi Cold Rolling mills. This imperative study will be helpful for rolling mill engineers and operators for selection of measure operating parameters for adequate rolling which must have higher efficiency and life of work roll. The work also includes the study the current material used for manufacturing work roll for rolling mills. [ABSTRACT FROM AUTHOR]

Present work employs reinforcing of ZrO2 and TiO2 particles (each 8.3 wt %) in aluminum alloy 6061 as a matrix and sample was prepared. Keeping in view the requirement, the set up for stir casting is being developed. Fabrication and characterization and machining of AA 6061/ ZrO2 and TiO2 AMMC (Aluminum Metal Matrix Composites) by stir casting route is the objective of this research. Powerful microscope is being employed to study the microstructure and thus the micrographs were prepared of the sample. ZrO2 and TiO2 particles were consistently dispersed in the base alloy and it was concluded that these have well-bred the grains of the aluminum matrix. Clusters of ZrO2 and TiO2 particles was identified in few sites. ZrO2 and TiO2 particles were adequately infused in the aluminum matrix. Hardness at micro level and wear defiance of the samples has been enhanced by the reinforcements of ZrO2 and TiO2 particles. [ABSTRACT FROM AUTHOR]