Vorontsov A.L., Karpov S.M., Stupnikov V.P.

Study on the Fibrous Structure of a Product Acquired with Plain Extrusion at Non-Axial Arrangement of Punch and Die. Part 3. Defining main parameters of the fibrous structure

This work proves the importance of researching the fibrous structure at products extrusion. The article outlines certain erroneous statements considering the forming of the current structure cited in popular works. The contributors formulated the sequence of correct analytic study of the fibrous structure.

Keywords: bulk stamping; extrusion; non-axial arrangement of punch and die; plane strain; fibrous structure.

Tkachuk N.N., Chepurnoy A.D., Skripchenko N.B., Litvinenko A.V., Tkachuk N.A.

Multilevel Models Applied for the Analysis of the Contact Interaction of Geometrically-Complex Bodies: Algorithms, Implementation and Applicability Analysis (final part)

The article describes an approach to the contact interaction analysis of geometrically-complex bodies, which represents a balanced combination of Hertz model, the boundary integral equations method and finite elements method. The example of the contact of a ball with a toroidal raceway illustrates the limits of applicability of various models.

Keywords: geometrically-complex body; contact interaction; Hertz model; boundary elements method; finite elements method.

Tomilov M.F., Tomilov F.Kh.

The ultimate technological parameters of sheet-metal concave-edge parts flanging by means of elastic environment

The article deals with the method of maximum technological parameters setting for sheet-metal concave-edge parts flanging by means of elastic cone punch. The reliability of the method was proved by experimental results on the surface of sheet-metal workpieces by means of elastic cone punch.

Key words: flanging; elastic environment; sheet-metal parts; technological parameters.

Galkin V.V.

The microstructural estimation of the distribution of the plastic deformation in metal cold-planted fasteners

The distributions of the plastic deformation of the metal cold-planted fasteners obtained microstructural studies. It is shown that the microarray method G.A.Smirnov-Alyaev, together with the use of the calculation of the final degree of deformation of multistage forming a non-monotonic deformation, the most objectively assesses the distribution.

Key words: microstructural method; the final degree of deformation; cold landing; fastener.

Mkrtchyan E.A.

Research of influence of the deforming tool sizes in the process of manufacturing forgings "Tongue"

On the basis of the finite element method with the use of the software complex three-dimensional mathematical simulation investigated the influence of the deforming tool sizes. The width of the deforming tool was changed within 0,64…1 from the maximum possible. It is established that the application of the maximum possible width allows to get the required height of the «tongue» with the less degree of compression.

Key words: forming; the finite element method; degree of compression; coordinate grid.

Reshetnikova E.S., Kadoshnikov V.I.

The research of multipass process of die forging of flange screws

Theoretical and experimental research of new technologies for the production of flange screws was performed. In the software complex DEFORM 3D stress-strain state of blank after each cold forming transition was defined and efforts of the process were determined.

Key words: flange screw; cold stamping; simulation; DEFORM 3D; stress-strain state.

Glushenkov V.A.

Technological schemes of hybrid and combined technologies of sheet metal forming, combining static and dynamic loading

The article gives the description of the developed technological schemes of hybrid and combined technologies sheet metal forming, combining static and dynamic loading, the results of their testing, the benefits of such processes and identifies areas for further development and use of hybrid and combined technologies.

Key words: hybrid and combined technologies; static and dynamic loading; sheet metal forming; pulse-magnetic processing.

Laskovnev A.P., Volochko A.T., Isobello A.Yu., Danil’chik I.K. Kovalevsky C.A., Shegidevich A.A.

The technology of obtaining accurate forged connecting rods limited mass for diesel engines

The technology is suggested for flash-free forming of a net-size forging for a part of a connecting-rod type designed for diesel engines. The results of theoretical and experimental investigations are presented.

Key words: hot flash-free forming, high-temperature mechanical processing, simulation, forging and connecting rod.

Laskov A.A.

Development of a Novel Technology of Producing Petals of Spherical Heads with the Application of Computer Simulation

A technology of manufacturing petals of spherical heads from high-tensile steel SA 533 Type B Cl.2 has been developed with the use of computer simulation. The technology has been tested in production conditions.

Keywords: spherical head; computer simulation; sheet stamping; thermal processing; DEFORM 3D software package.

Fomichev A.F., Panin S.Yu.

The optimal way of manufacturing of forgings with the use of computer programs

Results of modelling of process of receiving the blade from stainless steel and research of the directed impact on a metal current at a deposit of forgings are presented.

Key words: komputer programm Simufact Forming; blade from stainless steel; the directed current of metals.

Poksevatkin M.I., Chupahin D.M., Reznichenko S.V.

Modeling of the process of cutting the rod blanks based on fatigue failure of the metal

The model of the process of cutting the rod on length blanks using the phenomenon of fatigue fracture of the metal is developed.

Keywords: cutting; blank; modeling; fatigue failure of the metal.

Titov V.A., Koval’ A.D., Lavrinenko A.D., Lavrenko I.G., Savchinskiy I.G.

The metal-containing lubricant influence on the quality parameters of the surface layer of details made of titanium alloy VT22 during ultrasonic burnishing

The results of use of metal-containing lubrications during ultrasonic burnishing of details made of titanium alloys VT22 and VT23 are presented. It is determined that the use of these lubrications enhances technological possibilities of the process during the adjustment of processing speed and process force, and also ensures the parameters of quality of surface layer.

Key words: surface plastic treatment; ultrasonic burnishing; metal-containing lubrications; titanium alloys.