Accession Number : AD0695328

Title :   TEMPERATURE DEPENDENCE OF EXTERNAL FRICTION IN ROLLING OF M3 COPPER,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Severdenko,V. P. ; Barsegyan,M. A.

Report Date : 23 APR 1969

Pagination or Media Count : 9

Abstract : Annealed Cu plates (5 x 40 x 200 mm.) were rolled at 20-810 degrees to 10, 20 and 30 percent redn. The friction coeffs. were detd. simultaneously by forward slip, torsional moment, and inclinde dynamometer methods. For all degrees of redn. the Friction Coefficient decreased to a min. at 100 degrees rolling temp., which is due to the formation of cupric oxides. Plates rolled to 10-20 percent redn. also showed 2 max. on the Friction Coefficient vs. rolling temp. curves, at 360 and 560 degrees; plates rolled to 30 percent showed only one max. at 550 degrees. Increasing the time of heating the plates from 0.7 to 2.5 hrs. at 450 and 650 degrees had little effect on the Friction Coefficient. The max. at 360 and 560 degrees are probably due to changes in the nature of oxides. (Author)

Descriptors :   (*COPPER, *ROLLING(METALLURGY)), FRICTION, TEMPERATURE, METAL PLATES, USSR

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE