A. I. Kanareykin (Russian State University for Geological Prospecting (MGRI), Moscow)

Analytical determination of residual stresses in the surface layer of the part during blade processing

The article is devoted to the mechanics of metal cutting. It examines the process of free cutting, which is called stretching. Cutting, like all types of pressure treatment, involves plastic deformation of the material being processed. When considering the geometry of the action of forces and contact stresses during free cutting, an analytical determination of residual stresses in the surface layer of the metal during blade processing is obtained.
Keywords: blade processing; cutting tools; contact processes; cut thickness; chip formation; chip shrinkage coefficient.

A. I. Kanareykin (Russian State University for Geological Prospecting (MGRI), Moscow)

Determination of the stationary temperature field of a beam which section is a segment using the method of conformal maps

The work is devoted to the issues of stationary thermal conductivity. It solved the problem of finding the distribution of a stationary temperature field in a segment. In this case, the boundary conditions are boundary conditions of the first kind. To find an analytical solution, the method of conformal maps is applied. The expression obtained can be used both to calculate the temperature of the beam and to determine the distribution of the components of the stress tensor in the vicinity of a given cavity.
Keywords: beam; thermal conductivity; stationarity; function of a complex variable; method of conformal maps; boundary conditions of the first kind.

R. S. Malsugenov, R. A. Bayramukov, H. S. Kochkarova, A. A. Aybazov (North Caucasian State Academy, Cherkessk)

Theoretical and experimental studies of the working process of a device for gas sheet stamping of parts made of hard-to-deform metals and alloys

The article presents the results of theoretical and experimental studies of the working process of a device for gas sheet stamping of parts made of hard-to-deform metals and alloys. The analysis of the results showed acceptable convergence of the data obtained in the course of theoretical and experimental studies.
Keywords: sheet stamping; hot stamping; gas stamping; hard-to-deform alloys; high-strength alloys.

A. V. Mikhalev (Nosov Magnitogorsk State Technical University, Magnitogorsk)

Rationalization of technology and units of continuous casting and deformation machine in continuous casting

The article considers technologies and units of continuous casting and deformation machine (CCDM) working with liquid metal. Development of technology and units of CCDM working with liquid metal creates conditions for effective formation of the blank before its passage through the device for deformation of CCDM.
Keywords: technology; device; continuous casting and deformation machine; blank; optimization.

A. V. Vanyagin (IAP RAS, Nizhny Novgorod); V. I. Erofeev (Mechanical Engineering Research Institute of RAS; NNSTU; Lobachevsky University, Nizhny Novgorod); A. I. Ermolaev, S. N. Okhulkov (Mechanical Engineering Research Institute of RAS; NNSTU, Nizhny Novgorod); A. S. Plekhov (NNSTU; Lobachevsky University, Nizhny Novgorod)

Method for measuring the force of crank hot stamping press mod. K-8544, force 25 MN by torque of the receiving shaft and device for its measurement (Part 1)

In this paper we propose an original method of measuring the force of crank hot stamping press mod. K-8544, force 25 MN by torque of the receiving shaft. The functional scheme of the device for measuring the force of hot stamping press by torque with an optoelectronic frequency sensor of the receiving shaft of the press with a measuring tape «zebra» on the receiving shaft of the press is proposed. The work of the device for measuring the crank press force by the torque of the receiving shaft is analyzed, the design of the optoelectronic frequency sensor is given. This approach is applicable for force measurement of all crank hot stamping presses.
Keywords: crank hot stamping press; main shaft; receiving shaft; base section; angular deformation; phase shift of sections; torque; receiving shaft frequency sensors; zebra measuring tapes on the receiving shaft of the press; measuring microprocessor system.

V. G. Rakcheev, S. A. Galansky, I. S. Maksimov, E. A. Andreeva (Samara State Transport University, Samara)

Technological features of grinding rails of a railway track

Technological peculiarities of railway rails grinding are presented. On the basis of grinding wheel wear mechanism analysis, the theoretical and experimental data of grinding wheel wear with regard to abrasive grain shearing and bond destruction phenomena are summarized.
Keywords: railway track; grinding of rails; abrasive wheel; the process of destruction of the grinding wheel; wear of the circle.

A. D. Khvan (Voronezh State University, Voronezh); D. V. Khvan, N. S. Pereslavtseva, A. A. Sidorenko (Voronezh State Technical University, Voronezh)

Plastic sediment with a shift of a flat billet

The paper deals with plastic sediment with a shift of a flat billet. To implement this process, a design diagram of a stamp using a wedge mechanism is presented. The estimation energy-power costs for processing plastic slab. The experimental validation of the technical solutions adopted. The stamp can be effectively used in production with the introduction of innovative technologies in order to improve the operational properties of measuring and cutting tools.
Keywords: stamp; plastic sediment with shear; stress; strain; compression; shear; force.

A. V. Konovalov, S. I. Kanyukov, O. Yu. Muizemnek (The Institute of Engineering Science, RAS (Ural Branch), Ekaterinburg)

A model of computer-aided design of press forgings of rotation bodies

The concept of automated design of press forgings is described for a wide class of parts of rotation bodies such as shafts, cylinders, couplings, disks, bushings, gears, covers, rings, etc. An enlarged classification of forgings by types is proposed. Rules for determining types of forgings and the mechanism for correct user influence on results of determining the forging type are formalized. A unified basic model of computer-aided design of forgings for the class of parts under consideration is constructed.
Keywords: forgings of rotation bodies; rules for recognition and correction of the forging type; computer-aided design of press forgings.