KEYWORDS

Graphene, Cutting Fluids, Minimum Quantity of Lubricant (MQL), Grinding

GRINDING OF MOULD STEEL WITH GRAPHENE PLATELETS DISPERSED IN A VEGETABLE-BASED CUTTING FLUID

Grinding process is employed to improve tolerance dimensional and of shape as well as surface finish of hard and brittle materials. The grinding process uses hard abrasive particles which have edges with irregular shapes and orientation as the cutting tool. The workpiece material is removed in the form of chip through the action of abrasive grains. Grinding process is a good example of tribological condition that involves contact, lubrication and friction, and friction wheel and workpiece responsible for generating considerable amounts of heat in the contact region. The control of heat generation in the grinding is vital to ensure surface quality and help to prevents thermal damage of machined surfaces. This can be achieved by supplying cutting fluid in the grinding zone to reduce the conduction of heat to the workpiece by convection lubrication and cooling.

AUTHORS

R. Batista da Silva, C. Guimaraes, A. Marques, Federal University of Uberlandia, Uberlandia, Brazil, E. Ezguwu, Air Force Institute of Technology, Kaduna, Nigeria, L.A. Fernandes and R.V. Gelamo, Universidade Federal do Triângulo Mineiro, Uberlandia, Brazil