Innovative technologies of Z.I. Nekrasov Iron & Steel Institute of National Academy of Sciences of Ukraine (p 4-10)
Bol’shakov V.I., Juchkov S.M., Murav'eva I.G.

Z.I. Nekrasov Iron & Steel Institute of National Academy of Sciences of Ukraine

 

 

The operation features of charge distributors of  various types in blast furnaces of large volume (p 11-14)
Donskov E.G., Kostenko G.P., Orel G.I., Otorvin P.I., Donskov E.E.

JSC “Iron & Steel Integrated Works “Krivorizhstal”

Received October 14, 2005

The comparative analysis of operation efficiency of charge distributors of various types in large blast furnaces is accomplished.

blast furnace, materials distribution control,charge  distributor, efficiency

 

Experience of using briquettes on the basis of rolling scale in blast furnace (p  14-16)
Bychkov S.V.¹, Nosochenko O.V.², Vanyukova N.D.³

¹ State-Owned Ukrainian Institute for Designing Iron and Steel Works “Ukrgipromez”
² JSC “Iron & Steel  Integrated Works ”Azovstal”
³ National  Metallurgical Academy of Ukraine

Received October 3, 2005

The operation of BF with a partial substitution of pellets of JSC “Central Mining and Concentrating Integrated Works”by briquettes on the basis of rolling scale is studied. The results obtained prove efficiency of such a substitution because of increasing BF productivity and reducing coke rate.

briquettes, quality, technological indices, productivity, coke rate

 

Corrosiveness in relation to refractories and properties of blast-furnace slags (p 16-21)
Prihodko E.V., Khamhot'ko A.F., Togobitskaya D.N., Evglevskiy V.S.¹, Otorvin P.I.²

¹ Z.I. Nekrasov Iron & Steel Institute of National Academy of Sciences of Ukraine
² JSC “Iron & Steel Integrated Works “Krivorizhstal”

Received November 10, 2005

Interaction of liquid slags with refractories is analyzed. The results of such an interaction are determined by the joint accounting of model physic-chemical parameters of slag and refractories structure. It is established, that  corrosiveness of blast furnace slags in relation to refrectories as well as their refining ability are determined by slag properties and, first of all, their viscosity and surface tension. The predicative models for calculation of viscosity and surface tension of blast furnace slags that are used in true-to-life conditions of JSC “Iron & Steel Integrated Works “Krivorizhstal” are developed for optimization of blast furnace slags and quality cast iron production.

refractories, slags, structure model parameters, corrosiveness, viscosity, surface tension

 

 

Research of  slot-type tuyere operation on gas-dynamic stand (p 22-23)
Pogivanov M.A.

Received July 25, 2005

Test of 400 caliber long slot-type tuyere on gas-dynamic stand under industrial parameters is accomplished. The distribution of statistic pressure along the length and total pressure in exit section in a wide range of consumption change is obtained. Change of total pressure recovery coefficient upon consumption  via slot-type tuyere is calculated.

slot-type tuyere, gas-dynamic stand, statistic pressure, recovery coefficient

 

Dynamics of powder-like wire (band) dissolution in liquid steel  (p 24-25)
Dyudkin D.A.¹, Parenchuk V.V.², Babanin A.Ya.³

¹ OJSC “Universal Equipment Plant”
² JSC “Toreztverdosplav”
³ Scientific Production Association “Doniks”

Received November 22, 2005

The research of dynamics of powder-like wire (band) dissolution in the liquid steel for low speed of wire introduction is carried out. The obtained results make it possible to determine a speed of powder-like wire introduction for providing the specified area of liquid metal with filling material. The results are applied  both under development of method of powder-like wire injection in the intermediate ladle of continuous casting machine and under optimization of modes of powder-like (band) injection into small-capacity pouring ladle.

powder wire (band), dissolution dynamics, frozen layer of metal

 

 

Precision thermo-kinetic research of transformations in Donetsk anthracite under its air and argon calcination  in the temperature range of 100-1400 ºC (p 26-30)
Gasik M.M., Gasik M.I.¹, Urazlina O.Yu., Kutuzov S.V.²

¹ National  Metallurgical Academy of Ukraine
² JSC “Ukrgrafit”

Received November 28, 2005

The results of precision thermo-kinetic research of Donetsk anthracite transformations under its air and argon calcination up to 1400 ºC are described. It is established, that  anthracite oxidation starts at 550-600 ºC. The obtained data are set into  mathematical model for analysis of anthracite calcination thermal balance in electric calcinator.

anthracite, calcination, termoanthracite, air and argon calcination, thermal gravitation, differential scanning calorimetry, Fourier infrared spectrometer, statistical treatment of test data, activation energy of oxidation processes, thermal processes

 

Adoption of Р0М2СФ10 steelmaking by powder metallurgical technique (p 30-33)
Milchev V.V.¹, Gusarov O.O., Gen V.N., Zubkova V.T., Yepishev M.O.², Malyutskiy A.A.³

¹ JSC “Dneprospetsstal”
² Ukrainian State Research Institute of Special Steels, Alloys and Ferroalloys
³ Pryazovskiy State Technical University

Received September 28, 2005

 

 

The peculiarities of solidification process of bimetallic casting with internal layer made of steel pipe (p 33-36)
Vlas M.I.¹ , Khrychikov V.E.²

¹ JSC “Moldovagidromash”
² National  Metallurgical Academy of Ukraine

Received November 11, 2005

The experimental research of bimetallic casting solidification process and heating of casting mould consisting of cast-iron mould, steel pipe that is the internal layer of casting and sand core is carried out. The centers of shrinkage defects massing  are determined and thickness of working layer of band made of high-chromium cast iron is recommended.

bimetallic castings, casting mould, core, solidification, high-chromium cast iron

 

Antipenetration wash based on wastes of regular alumina smelting (p 36-39)
Khrychikov V.E., Osipenko I.A., Belyi A.P.¹ , Fomenko G.V., Naumov O.S.²

¹ National  Metallurgical Academy of Ukraine
² Ukrainian State University of Chemical Technology

Received November 28, 2005

The research results of polydispersed  dust of dry gas cleaning of regular alumina smelting are described. The possibility of substitution of conventional fillings comprising antipenetration wash by regular alumina production wastes is established.

mold wash, dust, gas cleaning, regular alumina, polymorphism, dispersity, microstructure, specific surface

 

 

Mathematical simulation of temperature distribution along the length and width of hot-rolled strips (p 40-44)
Milenin A.A., Danchenko V.N.¹ , Putnoki A.Yu., Tilik V.T.²

¹ National  Metallurgical Academy of Ukraine
² JSC "Integrated Iron & Steel Works "Zaporizhstal"

Received October 19, 2005

The paper describes temperature distribution in a strip during hot rolling. The general  model of technology contains the models of metal deformation in stands, metal cooling by air and sprayers. The mathematical model of temperature change  is based on finite element method. The results of experimental and theoretical analysis of longitudinal and lateral distribution of temperature are given. The influence of temperature distribution on heterogeneity of strip mechanical properties is present.

mathematical model, temperature distribution, hot rolling, strip, prediction

 

Engineering model of average normal contact stresses under cold strip rolling (p 45-48)
Vasilev Ya.D., Konovodov D.V., Dementienko A.V.

National  Metallurgical Academy of Ukraine

Received November 29, 2005

The solution for determination of normal stresses with using the new model of friction stresses is suggested. As a result, the engineering model for prediction of normal stress average value under cold rolling is developed on the basis of this solution. It is established that the new model of average normal stresses is considered to be efficient in the whole range of deformation conditions implemented in industrial cold rolling mills. Moreover, this model ensures obtaining of calculation data with the accuracy up to 5-20 %. Application of suggested model makes it possible to raise prediction accuracy of cold rolling process parameters.

cold rolling, contact stresses, friction, force, model, rolling mill, strip

 

 

Realization of innovative development by the specialists of pipe and tube production in Ukraine and Russia (p 49-53)
Sergeev V.V.,  Sokurenko V.P., Bloschinskiy G.P., Litvinskiy Ya.I., Kalinin I.V.

State  Enterprise  "Ya.Yu.Osada Scientific Research Tube Institute"

Received October 19, 2005

The procedure of implementation of innovative way of pipe and tube enterprises development in Ukraine and Russia is described. Thus, intensification of implementation of innovations regarding the ways of pipes production in Ukraine is recommended.

pipes and tubes, enterprises, innovations, technologies, standards, strategies

 

Technological advancement of billet surface preparation for hot pressing of pipes made of heat-resistant alloys (p 53-55)
Medvedev M.I., Karasik T. L., Juravel' V.P.

State  Enterprise  "Ya.Yu.Osada Scientific Research Tube Institute"

Received September 19, 2005

All the stages of pressing process are investigated. The primary importance was given to the choice of tool and temperature-deformation conditions of pressing. As a result, protective-lubricating coating is proved to be essential for high-quality pipes production. The analysis of operational characteristics of produced products shows that these products are competitive enough with imported products and can be produced by operating pipe and tube enterprises in Ukraine.

hot pressing, pipes, protective-lubricating coating

 

Advancement of cold-  and warm-deformed corrosion-resistant pipes production in workshop of CJSC “NZNT”
(p 56-58)
Atanasov S.V., Belikov Yu.M.¹,Vinokurov N.V., Kekukh S.N.²

¹ “YUVIS”, LLC
² CJSC “NZNT”

Received November 28, 2005

The cold and warm-deformed pipes with diameter of 4-114 mm and with wall thickness of 0.2-14 mm made of stainless ferrite, austenitic, martensitic and ferrite steel grades and nickel-based alloys are produced at CJSC “Nikopolskiy Zavod Nerzhaveuyschikh Trub” (NZNT). NTZN is one of the largest European enterprises specializing in stainless and seamless pipes and tubes production. This enterprise produces more than 100 dimensional types of pipes and tubes made of more than 60 domestic and foreign steel grades according to such standards as GOST,  ASTM, ASME, DIN, NF, UNI.

 

 

Rod deformation in roll scale breaker. Report 3. (p 58-61)
Dolganskiy A.M., Yеrmakova O.S.

National Metallurgical Academy of Ukraine

November 28, 2005

This paper is a final stage of previous research devoted to determination of stress and deformation features of elastic and plastic forming by steel billet bending in roll scale breaker. Theoretical approaches regarding determination of overall degree of metal deformation under specified conditions are worked out. The results obtained are useful in choosing rational conditions of drawing with application of roll scale breaker.

scale breaker, rod, deformation

 

 

Creation of new metal products for updating railway movable equipment in Ukraine (p 62-66)
Uzlov I.G.

Z.I. Nekrasov Iron & Steel Institute of National Academy of Sciences of Ukraine

Received November 28, 2005

Railway transport with its movable equipment is one of metal consuming branches of national economics. As a result of theoretical research the maximum operation of railway wheel is proved to be dependent upon relationship between wheel and rail hardness and must be in the range of 0,9...…1,0.

 

Improvement of rails quality under tempering with high-frequency currents heating (p 66-71)
Stalinskiy D.V., Nesterov D.K., Sapoghkov V.E.

Ukrainian State Scientific and Engineering Center “Energostal”

The effect of optimum modes of rail heat treatment with HFC heating on formation of homogeneous macro- and microstructure of hard-tempered layer of head is considered.  The technology of rail heat treatment with HFC induction heating  and with application of “softened” hardening is supposed to be changed.

metal, rail head, HFC induction heating, hardening, macro- and microstructure, metal quality

 

Optimization of chemical composition and mechanical properties of reinforcing bars for reinforced concrete structures of underground constructions (p 71-74)
Levchenko G.V., Vorobey S.A., Demina E.G. ¹, Sheremet V.A., Kekukh A.V., Gun'kin I.A.²

¹ Z.I. Nekrasov Iron & Steel Institute of National Academy of Sciences of Ukraine
² JSC “Krorozhstal”

Received November 1, 2005

The research on optimization of chemical composition and mechanical properties of reinforcing bars for reinforced concrete structures of underground constructions is carried out. Rolled bar  made of structural low-alloyed steel for welded constructions is proved to provide mechanical properties that satisfy Structural Norms and Rules No. 2.03.01-84 Requirements.

chemical composition, structure, mechanical properties, reinforcing bars, reinforced concrete constructions

 

 

Aluminous spindel low-cement concrete for hot patching of steel teeming ladle linings (p 75-77)
Primachenko V.V., Martynenko V.V., Babkina L.A., Khonchik I.V.¹, Stepanova V.P., Zaliznyak I.P., Kuznetsov A.G.²

¹ JSC “Ukrainian Research Institute of Refractories named after A.S.Berezhnoy”
² JSC “Dneprospetsstal”

Received October 31, 2005

Aluminous low-cement concrete developed by JSC “Ukrainian Scientific & Research Institute of Refractory Materials named after A.S. Berezhnoy” is recommended to be used under making of primary lining and accomplishing of hot patching in the areas of local lining wear of steel teeming ladles by means of gunning or hand coating methods.

aluminous gunned castable concrete, hot repairs of thermal units, gunning, coating, steel teeming ladle

 

 

Torch parameters under various types of fuel combustion in reverberating  furnaces (p  78-81)
Okhotskiy V.B.

National  Metallurgical Academy of Ukraine

Received October 21, 2005

Interconnection between heating parameters and reverberating furnace dimensions is analyzed. The expressions for their calculation are obtained.

reverberatory furnace, furnace dimensions, heating

 

Multipurpose use of currently extracted overburden of Stremigorod deposit (p 81-84)
Gumenik I.L., Pchelkin G.D., Nesvitaylo N.V., Shagoyan S.N.

National Mining University

Received December 2, 2005

Protection and rational use of mineral resources are considered to be urgent problem of today. The successful development of economy and welfare of future generations significantly depends upon proper solving of this problem. Now Ukrainian government realized the necessity of more intensive implementation of new effective ways and systems upon mineral and raw materials deposits. The promising technologies of mining make it possible both to provide more complex and combined processing of mineral resources and to reduce environmental impact of production wastes.

multipurpose use, mineral resources, environmental protection, loams, gabbroanorthosite, kaolins, external dumps, land alienation, primary deposit, open mining

 

Scientific and technical fundamentals of determination of rock mass geomechanic descriptions under underground mining of uranium deposits (p  85-89)
Lyashenko V.I., Tkachenko A.A., Chistyakov E.P.

State-Owned Enterprise “UkrNIPI tekhnologii”

Received November 3, 2005

There are presented scientific and practical results of studies carried out under mining of complex-structured ore deposits by means of heading-and-stall method with backfilling on the basis of uranium deposit of Ukraine. The analysis of stress condition is made. The tendencies of change mechanisms and intensity of rock mass pressure in the interval range of 300 -1000 meters are established.

rock pressure intensity rate, mode of deformation, opening strength, heading-and-stall method with a backfilling

 

Application of economic and mathematical methods and computer engineering under planning cyclical-and-continuous method on iron-ore open cast mines (p 89-92)
Stanislavskiy L.Ya., Ignatov O.A.

JSC “Ukrgiproruda”

Received November 3, 2005

The schemes of cyclical-and-continuous method (CCM) are described. The effective application of CCM is discussed. The economic and mathematical model makes it possible to determine the optimum technical and economic parameters in initial stage of projecting.

 

Efficiency enhancement of concentrate dehydration on belt vacuum filters (p 92-95)
Nazimko Ye.I.¹, Blyuss B.A., Semenenko E.V.², Garkovenko E.E.³

¹ Dneprodzerzhinsk National Technical University
² N.S. Polyakov Institute of Geotechnical Mechanics of National Academy of Sciences of Ukraine
³ State-Owned  Enterprise “Ukruglekachestvo”

Received December 12, 2005

The reduction of moisture content in concentrates in ore-dressing and by-product coke plants in Ukraine is of greatest importance to mining and smelting industry in Ukraine. The solution of this problem makes it possible to reduce gas and electric power consumption that are used for mineral raw materials processing and to improve coke and commercial concentrate quality.

filtration, moisture reduction, dehydration, shear deformation

 

 

 

New equipment for cast-iron out-of-furnace treatment by means of granulated magnesium (p 95-99)
Bolshakov V.I., Shevchenko A.F., Cherevik Yu.I.¹, Bashmakov A.M.²

¹ Z.I. Nekrasov Iron & Steel Institute of National Academy of Sciences of Ukraine
² State Research and Design Titanium Institute

Received September 27, 2005

The technical characteristics and peculiarities of modern equipment are presented. The automatic control and management system and results of its implementation are analyzed.

cast iron desulfurization, mechanical equipment, dynamic loads, drive, measuring pocket module, automatic control and management system

 

Determination of loading distribution character in elements of metallurgical machines from the point of view of parts wear (p 99-102)
Sidorov V.A., Avvakumov S.I.¹, Shepel' V.M., Zolkin I.G.²

¹ Donetsk National Technical University
² CJSC “ISTIL (Ukraine)

Received March 24, 2005

The range of issues regarding loading distribution in the parts of metallurgical machines and mechanisms is found out to be specified by means of wear areas study. The task related to determination of maximum stresses on the surfaces of rolling elements of three-row roll and bearing rotary ring of crown mechanism of electric arc steelmaking furnace with the consideration of wear results is considered.

distribution, loading, wear, three-row roll bearing rotary rings without gear drive, rolls, crown rotation mechanism

 

Barbell stability of boring instrument of iron notch opening machines  (p 102-105)
Grachev K.G., Puris V.I.¹, Selegey A.N.²

¹ CJSC “DneproGidroMash”
² National  Metallurgical Academy of Ukraine

Received September 20, 2005

Resistance of bar that supports boring tool of iron notch opening machine is considered. The factors influencing the bar resistance are specified. The calculation of critical axial thrust applied to the bar is presented. The necessity of boring tool bar cooling is proved.

opening system, iron notch, blast furnace, bar, resistance, critical force, rod cooling

 

 

Improvement of steel wire annealing mode in drawing muffle furnaces (p 105-108)
Usenko Yu.I., Pulpinskiy V.B., Sapov V.F.¹, Ivanov V.I., Gritsay V.P.²

¹ National  Metallurgical Academy of Ukraine
² Zaporizhzhya State Engineering Academy

Received October 21, 2005

The calculation and testing research of temperature conditions of steel wire annealing in drawing muffle electric furnaces of indirect radiation heating before hot galvanizing are carried out. The measures regarding rational redistribution of heating capacity in the working volume of these electric furnaces and regarding minimizing of heating rate through a roof and side wall lining are suggested.

steel wire, drawing electric  furnace, annealing  mode, lining of electric arc furnace roof and side walls, electric energy saving

 

Efficiency increase in using natural gas at open-hearth furnace heating (p  108-111)
Tsygankov G.T.¹, Putnoki A.Yu., Onoda K.K., Chernyshev S.I.²

¹ Ukrainian State University of Chemical Technology
² JSC "Integrated Iron & Steel Works "Zaporizhstal"

Received July 6, 2005

The processes of hydrocarbon molecules decomposition under open-hearth furnaces heating with natural gas are considered. The processes of soot particles formation with the purpose of increasing blackness degree of combustion products and strengthening of heat transfer from the torch to metal are explained. The systems that permit natural gas self-carburation are presented.  The analysis and estimation of blackness degree increase on specific energy resources consumption per 1 ton of steel are accomplished. The possibility of specific fuel consumption is demonstrated.

heat transfer, open-hearth furnace, natural gas self-carburation, reformer, energy resources, metal, torch, furnace lining, regeneration

 

Air ejection by metal jet under cast iron overflow  (p 112-113)
Nedopekin F.V., Bodryaga V.V.¹, Kravets V.A.²

¹ Donetsk National Technical University
² Donbass State Academy of Civil Engineering and Architecture

The mathematical model of air ejection process by means of liquid jet under cast iron overflow is presented. The novelty of the model is in consideration  of metal jet thickness and non isothermal  process.

mathematical simulation, cast iron, metal jet, air ejection, dust control

 

 

Progressive directions of enterprise management development (p 113-115)
Dubilet A.V., Ponomarenko V.A.

CJSC  Commercial Bank “Privatbank”

Received  November 11, 2005

The modern tendencies of management systems development are discussed with the purpose of enterprise's successful activity and development. The priority is given to interactive planning, electronic management technologies and electronic documents circulation in particular.

management, external environment, online approach, management technology

 

Peculiarities of formation of divisional and organizational structures of iron and steel enterprises management (p 116-119)
Bien’ T.G., Dovbnya S.B., Ped'ko A.B., Osypa V.V.

National  Metallurgical Academy of Ukraine

Received November 23, 2005

The disadvantages of existing organizational systems of iron and steel enterprises management are both identified and analyzed. In view of the world experience acquired and specific features of Ukrainian metallurgical works the importance of gradual transition to divisional organizational structure of management are explained.

organizational structure of management, functions, business-unit (division)

 

 

Radar equipment in ferrous metallurgy (p 119-121)
Golovko V.I., Kukushkin O.N., Mihaylovskiy N.V., Golovko L.A.

National  Metallurgical Academy of Ukraine

Received October 20, 2005

The scientific and technical decisions and measures for a wide application of microwave equipment in metallurgy are explained.  These decisions are very important for solving tasks of charge surface profile measuring, for monitoring and estimation of melt dynamics under converter melting control and refining, pouring, and liquid metal transportation, for determination of charge components in the flow and efficient humidity estimation under drying of refractory coating of casting ladles are grounded and implemented.

radiolocation, automation, control, metallurgy, microwave equipment, information, simulation, algorithm, system

 

 

European standards transition in area of individual facilities of defence of breathinorgans (p 122-125)
Golinko V.I., Cheberyachko S.I.¹, Osedko O.A.²

¹ National Mining University
² Spetssnab

Received October 3, 2005

The issues related to adaptation of respirators produced in Ukraine to new European standards are considered. The main differences between state standard No. 12.4.041-89 and standard EN 149 in pilot tests are described and analyzed.

respirator, facility of  breathing organs personal protection, permeability coefficient, respiratory resistance

 

Safety of open cast mining: prediction of deformation processes in opencast mines (p 125-128)
Polishchuk S.Z., Golub V.V.¹, Galimullin V.F.²

¹ Institute of Problems of Nature and Ecology NASU
² Ministry of Industrial Policy of Ukraine

Received July 14, 2005

 The elements of system-based approach to the problem of prediction of deformation processes in opencast mines are considered.

 

 

Тopological-exergic analysis of parameters  of the unit  for industrial wastes drying. Report 3. (p 128-130)
Chernyshov A.V., Tuchin V.T., Dolgopolov I.S., Minaeva A.S.¹, Noskov V.A.²

¹ Dneprodzerzhinsk State Technical University
² Z.I. Nekrasov Iron & Steel Institute of National Academy of Sciences of Ukraine

Received November 25, 2005

The calculation methods of energy-saving technology and equipment for industrial wastes drying are considered.

drying unit, exergy, topological and exergic analysis, calculation methods