This paper deals with the transfer and the adequacy of the results of melting, obtained on small-diameter cupola, on cupola of industrial purpose. The analysis of the similarity consideration in the transition from a small-diameter cupola to the larger diameter cupola was conducted, which showed that the basic requirements of a full-scale (physical) modeling were carried out. It was concluded that the thermal behavior, in the idler and the charge heating zone, does not depend on the diameter of furnace provided the basic ratio between the geometric parameters of the furnace, the parameters of the charge and coke, which are following from the major requirements (theorem) of the similarity law and full-scale modeling.

The article considers the principles of forced nucleation in the production process of iron ore pellets. It is based on calculating and analytical methods of designing technology for pellets, taking into account parameters of forced formation in the system of wet deposition charge on the skull pelletizer and design characteristics of the deposited layers of charge, embryos and pellets. The design data allows choosing the coordinate of the deposition of the charge on the skull pelletizer and the number of jet devices required for thermal power deposition of wet charge on the skull pelletizer.

The paper deals with the solution of Navier-Stokes equation describing the motion of a viscous uncompressible liquid. The solution is received by imposing a series of conditions fulfi  lled approximately under a real melt motion and represents the well-known in hydrodynamics Bernoulli equation. The analysis of conditions imposed on Navier-Stokes equation, carried out in the paper, enables to assess the application range of Bernoulli equation for calculation of foundry gating system structures. 

Thermodynamic calculations of redox processes in welding with carbon containing flux have been carried out. The calculations showed the possibility of carbon participation (in addition to silicon and manganese) in the redox processes of welding. The entered into the system carbon can influence significantly the content of non-metallic inclusions in the weld metal downward due to the high regenerative properties at T = 1950 ÷ 2200.

The article deals with the results of experimental research of steel microalloying process by vanadium and nitrogen. The purpose of the research is the comparison of results of vanadium steel alloying with the use of standard ferrovanadium, converter vanadium slag with compressed gaseous nitrogen and nitrogen ferrovanadium. The analysis of the received results showed that all the samples of melted steel have fi  ne-grained structure; it means that the ways of introduction of vanadium and nitrogen in metal does not have a signifi  cant infl  uence on its structure.

The article presents the results of research of high-temperature plasticity of rail steel Eh76F in the range of temperatures between 950  –  1250  °С. It has been found out that the best results of plasticity with satisfactory microstructure were got when the temperature was 1150  °С.

The results of solving the problem of simultaneous determination of the stresses in the deformation zone and horizontal rolls in the rolling-beam in the stands universal beam mill are described. The regularities of the distribution of normal and tangential stresses in the deformation of the beam, and the voltage in the rolls of the rolling force are determined.

The article considers the problem of obtaining non-waste technology for steel plant, producing blast-furnace slag. The technology of slag bleaching by its setting and water granulation only part of the melt is described. It is recommended to apply for remelting metallic inclusions that have settled to the bottom of the bucket. The factors, affecting the viscosity and degree of slag whiteness, are given in thepaper. The clarified slag is recommended for colored cement.

A new method based on discrete transfer modeling technique for calculating the direct exchange areas (DEA) in zonal method is presented. The key property of this method is fast DEA matrix evaluation. The computational time was found to be small in comparison to other methods for direct exchange areas evaluations based on numerical quadrature integration. The accuracy of the  procedure is established by comparing the predictions with those based on the numerical integration on test case (IFRF furnace). 

The deformation structure (110)[001] is formed on the surface of a band bulk during the hot rolling of ferric steel. The deformation is spread at an equiaxed recrystalized grain structure. During implement-ing a cross-flow of the material (in an edge zone) in a hot rolling process a stable orientation {112}<110> is formed in surface layers. Cooling rate of the band edge differs considerably from the velocity in the middle of the band. That in turn excludes the recristallization process, and therefore keeps prolate deformed (polygonized) grain structure, which has the deformation texture in the pure state. 

The nano- and ultradisperse grain structure has been formed by the method of electron-beam welding on the electron accelerator of tungsten and chromium carbides and by the following pulse treatment low-energy electrons. This structure has been fi  lled with the nano- sized pore system. It has been shown that nanohardness and modulus of elasticity reach their high values in the secondary pulse-affected zone. The formation of the nano-sized structures with a well-developed system of pores in the surface layer prevents brittle surface fractures.

The paper presents the research results of different characteristics of the Ni3Ge alloy possessing L12 structure. The research of single crystals is carried out. Their deformation is oriented along axes [001], [ 39], [ 22] and [ 34]. The activation energies of creep for the investigated orientations are measured. The steady-state creep rate is described by the well-known law dε /dt = K2σn. Values of the steady-state stress exponent, n, are received. Conclusions about possible mechanisms of creep are done. It is shown, that creep of the samples oriented along different axes is carried out by the dislocation processes with different activation energies.

It has been found that the most dangerous corrosion type of pipeline systems of oil refi  ning is a pitting one. Based on the volume and thickness measurements, as well as the results of the coercive force measurements, the mechanism of local catastrophic corrosion of pipeline systems of oil refining has been established. A method of non-destructive quality control of welding and subsequent heat treatment of pipeline systems of oil refining has been offered. It will prevent the emergency situations.

To identify the causes of destruction and to prevent future similar cases, this paper focuses on research of the metal fragment of destroyed steam turbine rotor by destructive and non-destructive methods. Using methods of electronic microscopy, a metal structure condition of destroyed rotor is researched. The correlation between acoustic characteristic with metal microstructure parameters of destroyed rotor is established.