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FRICTION AND ITS INFLUENCE ON MATERIAL FLOW IN EXTRUSION-FORGING OF RR58 ALUMINIUM ALLOY BY VISCO-PLASTIC STUDIES.

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

RR58 aluminium alloy rings of two different geometries were subjected to isothermal upsetting in the temperature range 300-800 K, using some popular lubricants. Friction factors are evaluated using theoretical and experimental calibration curves available in literature. It is found that theoretical curves predict higher values of friction, and the actual friction factors are obtained by using suitable correction factors. The influence of specimen geometry on the friction factor is studied. Finally, with the aid of visco-plastic analysis, the effect of friction and temperature on the material flow and die filling in extrusion-forging process is highlighted.
Original languageEnglish
Title of host publicationProceedings of the International Machine Tool Design and Research Conference
PublisherUniv of Birmingham, Dep of Mechanical Engineering
Pages533-540
ISBN (Print)333375009
Publication statusPublished - 1985
Externally publishedYes

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