The article gives the review of the influence of various alloying components and impurities on chromium and chromium-base alloys attributes and also the review of the production methods of these alloys. The metalo-physical and physico-chemical principles of the production of dispersion-strengthed alloys are examined. The coagulation of dispersed particulates during heating of metal and hot metal endurance “Ostwald Maturity” is examined. It was found that those processes are linked with the excessive free energy (Gibbs energy) reduction. The conclusion about the necessity  of thermodynamical estimation of pointed out processes was done and the results are described.

The results of studies of basalt implementation in the production of chromite pellets are described with its influence on the quality of wet, dry and fi  red pellets. It is shown that the use of basalt allows fully to deduce bentonite and coking fines from the charge, to reduce the burning temperature from put into practice 1400 °C to 1250  –  1300  °C, as well as to produce  fi  red pellets corresponding to the technical requirements.

Model of ideal associated solutions is quite acceptable for description of thermodynamic properties of liquid metal binary solutions with positive deviations of thermodynamic activity from the Raoult law. The use of model for prediction of thermodynamic properties of real multicomponent solutions is possible under condition of independent definition of thermodynamic properties of “self-associates”.

The application prospects of dispensing systems for slagging mixtures in molds of continuous casting machines are illuminated and the necessity of their further improvement, in particular, through the use of spiral screw, is substantiated. The method and results of experimental researches of design and power parameters of flexible screws are given with inner diameter 15, 20 and 25 mm. They transport the fine granular materials by steel coils rotated with a frequency of 250–500  rpm and differed by outer diameters (11, 16 and 18  mm) and pitch of coils (5, 10, 15 and 20 mm). It is found, that the dependence of volume efficiency of spiral screw from rotation frequency of the working part in the studied range is linear for the tested combinations of geometrical parameters of the transporting device. Noticeable effect on the flow characteristics of the screw system has a ratio of spiral coil pitch Sv and its outer diameter dsp . The dependence of the change of spirals volume  flow for one of its turnover from this ratio has a non-linear form with a maximum in the range  Sv /dsp  =  0.9–1.1, and the minimum specifi  c energy of spiral screw was fi  xed at the values of Sv /dsp  =  0.5–0.6. The obtained data are used during the calculation and construction of a linear series of next generation dispensing slag-forming mixtures systems in molds of continuous casting machines with different cross-section.

The design procedure are described with the estimation of values of the electromagnetic parameters that arise in a bath with capacity of 60 t of ladle–furnace (LF) AC and DC during the heating of molten metal by arc with the same input power – 7.7 MW. The features of the current density distribution and electromagnetic force (e.m.f.) into the ladle bath are shown depending on the type of current used by the aggregate LF. Numerically studied the effect of three-dimensional formulation of e.m.f. with the nature of changes in the conditions of mixing and melt  flow rates depending on the intensity of argon feed through asymmetrically located in the bottom of ladle blowdown node. The rational modes are installed from the standpoint of effective influence e.m.f. by melt mixing process and energy-saving on the melt processing in aggregate LF AC ladle of studied design.

This paper studies the possibility and proposed optimal technological scheme of manganese ferroalloys of manganese ores from Usinskoye deposit on the basis of analysis of the concentrates chemical composition and indicators of manganese ferroalloys smelting processes. It is shown that the standard manganese ferroalloys can be produced without attracting the rich content of manganese, low-phosphorous import manganese ore. The solution of this problem is of strategic importance from the standpoint of economic security and import substitution of manganese resources. The authors actualized the direction, allowing to explore opportunities not only to increase the volume of melt in the Russian high-carbon ferromanganese and ferrosilicon manganese, including through the involvement in the domestic production of manganese ore, but also to develop import-substituting technology for the production of refined manganese fer-roalloys – medium and low carbon ferromanganese and manganese metal from these ores.

The authors describe the effect of low-alkaline red mud on the composition and structural characteristics of pelletized charge of JSC “Severstal”, consisting of ferruginous quartzites of Olenegorskoe and Yakovlevskoe deposits and Kovdor magnezite ores. It is proved that in the process of pelletizing low-alkaline red mud additives contribute to improve the granulation process, increasing the average diameter of the granules. The distribution of the main melt forming elements was shown for fractions of pelletized charge. 

The paper is devoted to the effect of pulsed electron-beam treatments with different energy densities Е1 = 15 J/cm2, Е2 = 20  J/cm2 и Е3  =  30 J/cm2 on the change of structural and phase states in the NiTi surface layers. It is revealed that in the diffraction patterns of NiTi specimens with one side irradiated by a low-energy high-current electron beam the refl  ections B2 phase and martensite phase B19′ are observed. By increasing the energy density from Е1 = 15 J/cm2 to Е3  =  30  J/cm2 the content of martensite phase B19′ increases from 5  % to 80 %. It is also revealed that the surface layer is melted to the thickness 8–10  μm, and in this layer the Ti2Ni phase dissolves. The dis-solution of Ti2Ni phase leads to a change in the concentration of Ti and Ni. It is established that the modifi  ed B2 phase in the melted layer is enriched with titanium as compared with its original content in the B2 phase up to irradiation. It is revealed that B19′ phase formation occurs when the surface layers of the samples TiNi are treated with pulsed electron beams with lower values of the energy density in the beam (Е1  =  15  J/cm2,  Е2 = 20 J/cm2). In the samples treated with pulsed elect ron beams with greater energy density in the beam Е3  =  30  J/cm2, the surface layer to the entire depth of penetration of X-ray beam is in the martensitic state. 

Dendritic liquation of admixtures of metal is heterogeneity of composition in the axes of dendrite and interdendritic area. Two tendencies of liquation of elements are found in the alloys of iron: in environments-him for all elements a liquation diminishes at the increase of concentration of addition; for a from-efficient element a liquation is increased with the concentration of element. The new order of location of elements is specified among superficial activity of metals in liquid iron. This order can be used for the choice of elements for the desorption of harmful admixtures from the surface of solidifi  able crystals of metal.

Phase and chemical compositions, structures and microhardness of diffusion coatings, containing titanium and aluminium, were studied on samples of steel 12Cr18Ni10Ti. Depending on the type of treatment the multilayer coatings on titanium carbide and nitrite base, intermetallics and oxides of titanium, aluminium, nickel, chromium, iron, as well as solid solutions of titanium and aluminium in austenite are formed in steel. It was found that during chemical-thermal treatment the titanium nitrite layer has a function of a barrier, delaying the aluminium and titanium diffusion into a base and the base components – into a coating. 

A full-scale experiment was carried out to determine the influence of a cold mill rolls’ diameter on the texture and magnetic properties of grain-oriented electrical steel (GOES). The results were arranged into two statistical samplings containing magnetic induction value of GOES rolled on the 70 and 290 mm diameter rolls. It was found out that the influence of the rolls’ diameter on the magnetic induction of the GOES is statistically insignificant, but probable.

The authors proposed a method of quantitative estimation of heating temperature during cold rolling of tubes with specified performance. The formula for calculating the deformation heating is described resulting from the law of energy conservation during plastic deformation. As a result the authors showed an example of using the proposed formulas for evaluating the reduction effort rolling along a certain route. The possibility of intensification of rolling process by temperature heating is described. 

The influence of the temperature mode in the rotary furnace on lime quality is established experimentally in laboratory and industrial conditions with its impact on the slag mode during electric smelting of steel in electric arc furnaces.

The resistant boron-containing coatings with low thermal conductivity were used to enhance durability and to reduce heat losses through the air tuyeres. The possibility of solving the task was shown on the example of the trials of two experienced tuyeres. 

The calculation of sinter chemical composition from chromite fines and various silica and alumina-silica fluxing agents was made and described.