ABSTRACT
This chapter focuses on the effects of friction and lubrication in metal forming, the mechanisms of lubrication, and an account on lubricants used in metal forming leading toward sustainability of the lubrication in metal-working processes. In metal-forming processes, friction and lubrication are mutually related. Friction is an inherent characteristic in all forms of metal-forming processes and lubrication is often used to control friction in forming applications. Behavior of friction in metal forming should be carefully understood before taking process-related decisions. The Coulomb’s law of friction has been extensively used as an initial predictive model in the analysis of interface friction in many engineering applications. The Coulomb’s law of friction breaks down in applied metalworking processes especially when there is a lubricant present at the interface. The main function of lubricants used in metal forming is to control friction and tool wear. There are many supplementary requirements expected from forming lubricants: cooling material and tool are among them.
