The laws of process of cutting and formation of the surface layer with free cutting of antifriction powder materials

The physical processes accompanying the cutting process of the antifriction powder materials and influencing on the quality of the surface layer have been studied. The purpose of the work: establishing the lans of the process of cutting and formation of the surface layer with free cutting of antifriction powder materials. The laws of effect of the cutting conditions and the front angle on the specific parameters of the chips formation, specific cutting forces, the contact loads and stresses on the thermal flows, fields and temperatures, on the formation of the surface layer when turning the powder materials by the hard-alloy cutters have been investigated. Suggested has been the mathematical model of chips-formation, on the base of experiments, the design dependences and correction coefficients for determination of the cutting forces, temperatures and residual stresses in the surface layer of the part and tool have been obtained. The optimum cutting conditions have been determined. The field of application: the machine construction enterprises, the scientific research and designestablishments designing the equipment and technological processes of manufacture of parts from the powder materialsAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio