Author(s)

T.E. Warrender, D.K. Aspinwal, R.C. Dewes, J.M.T. Simao, E.M. Aspinwall & G. scamans

Abstract

Mill rolls finished by electrical discharge texturing (EDT) are widely used in the manufacture of steel and aluminium alloy sheet / strip. Appropriate selection of process operating parameter levels: peak current, onloff time, polarity, etc., allows a limited degree of independence in specifying roll surface topography in t e r n of surface roughness (Ra), peak count (Pc) and skewness (Rsk), in order to meet specific functional requirements. Experimental work aimed at determining the effect these operating parameters has been carried out and comprehensive surface topography measurements made using a variety of non contact (white light interferometer and laser units) and stylus contact systems. The paper details the significant differences, which oc

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