Physical and chemical processes in the contact zone when processing metals with a blade tool

Abstract The article considers the theory of radical-chain mechanism of formation of lubricant films on tribos-connected metal surfaces when cutting metals. It is shown that chemically active particles formed by the destruction of molecules of lubricant and cooling technological means (LCTM) in the contact zone play a decisive role in the synthesis of lubricants. Mechanisms of formation of chemically active atoms, radicals and ions and factors influencing these processes are presented. It has been established that the main of them can include the temperatures that occur in the contact zone, exoelectrons issued by freshly opened metal surfaces, as well as the catalytic effect of the juvenile surfaces themselves. On this basis, various methods of pre-activation of LCTM are proposed in order to obtain the required quantity and type of chemically active particles.