Abstract

ESPINOZA-CANTU, Vicente; GUERRERO-MATA, Martha P.; LOZANO, Tomás  and  COLAS, Rafael. Evaluation of the Frictional Characteristics of Rolling Emulsions. Ingenier. mecáni. tecnolog. desarroll [online]. 2008, vol.2, n.6, pp.200-204. ISSN 1665-7381.

A series of ring compression tests were carried out in samples machined from hot- rolled steel slabs to determine the frictional characteristics of various emulsions used for lubrication in cold rolling of steel strip; additional tests were conducted without lubrication or using polytetrafluorethylene (PTFE) tape. The material was tested at different velocities in a servo-hydraulic computer driven testing machine. The friction factor (m) was evaluated from the dimensional change of the ring samples. It was found that the increase of testing speed produces a reduction in the value of m in liquid lubricants; m was found to be independent of speed when testing without lubrication or with PTFE tape.

Keywords : Friction; lubrication; mechanical testing; cold rolling.