Shvets L. Rollinа of Aluminum Alloys Billets in Conditions of Isothermal and Close to it Deformations.

Research object - hrocesses of purveyances rolling. Research subject - processes of rolling from aluminium alloys in the conditions of isothermal and close to its deformation. Research purpose and task. Consists in the decline of norms of expense of metal and prime price of making the rolled purveyances and, on the whole, pressed forges due to introduction of little waste of technological processes of purveyances rolling from aluminium alloys in the conditions of isothermal and close to him deformation. Research methods: application of imaginary coordinate scale; methods of eventual differences and in-out parameter of resiliency; tensometring; optical microscopy; mathematical statistics. Practical values of the results. Method of conducting of experimental researches; classification of typical representatives of purveyances, rolled on an equipment for isothermal and close to its deformation; technological recommendations in relation to the calculation of calibers; base and typical technological processes for rolling of purveyances from aluminium alloys; recommendations for a requirement specification on the construction of industrial prototype of the specialized equipment, for rolling of purveyances in the conditions of isothermal deformation. Scientific novelty of the results: first dependences of expansion, passing, pressure of metal are experimentally probed on rolls from the degree of deformation, temperature of heating of rolling stamps and purveyances from aluminium alloys at rolling of purveyances in smooth rolls and calibers of the different systems; it is set that in the interval of temperatures of heating of rolling stamps of 250-350°С and permanent degree of deformation, value of expansion, passing, pressure of metal on rolls at rolling of purveyances from aluminium alloys does not change; the method of theoretical research of flow of metal got subsequent development in the cell of deformation during volume deformation, which consists in researches of flow of metal in transitional and withstand areas at rolling of purveyances taking into account development of deformation in time; it is set that rolling of purveyances in the conditions of isothermal deformation reduces pressure of metal on rolls in 1,8 times and anymore; it is set that at rolling of purveyances from aluminium alloys in the conditions of isothermal and close to him deformation it must be carried out without application of lubricating material; formulas are developed for determination of expansion and passing at rolling of purveyances in the conditions of isothermal and close to its deformation from aluminium alloys in the calibers of the different systems taking into account the geometrical forms of calibers and rolled purveyances. Degree of introduction - within the limits of industry. Sphere (industry) of the application - on the enterprises of engineer, especially in aviation industry, as a preparatory operation of volume punching.