Foundry Alfe Chem is an industrial reality working in the field of lubrication and chemical auxiliaries for industrial processes, which falls within the framework of the emerging and increasingly important «green chemistry». The goal of the company is to develop products that are more environmentally friendly by using raw materials from renewable sources; specifically, Foundry Alfe Chem has a program of self-sustainability that contemplates, for the foreseeable future, the direct production of renewable raw materials. The company has developed a new dedicated product line, Olitema, whose purpose is to offer highly technological solutions with complete environmental sustainability. In this context, Foundry Alfe CHEM has created a new product which represents a breakthrough in the class of HFC hydraulic fluids: Ecosafe Plus is a biodegradable fire-resistant hydraulic fluid with high engineering and technological performances, high environmental sustainability and the best security guarantees in workplaces. Its formulation is glycols-free, and it allows for easier disposal of the exhausted fluid, compared to a traditional water/ glycol-based HFC hydraulic fluid. For what concern the technological properties, Ecosafe Plus has been tested by accredited laboratories with tribological trials (4 Ball wear test ASTM D 4172, Ball on disc test ASTM 6425, Brugger test DIN 51347, Vickers test ASTM D 2882), with elastomer compatibility test (ASTM D 471) and biodegradability test (OECD 310 F).

The key technological parameters having impact on a crystallizer contraction at semi-continuous molding of cast iron are considered. The analysis of design particularities of a crystallizer on its contraction is carried out. On the basis of the theoretical analysis in ProCast system of modeling the optimum configuration of a working liner of a crystallizer is defined.

This article presents an automated cupola complex, developed by scientific-production enterprise «Technolit» together with GSTU named after P. O. Sukhoi, launched in the spring of 2015 at the plant «Stroiex» in the city of Chelyabinsk (the Russian Federation). The old cupolas (open type) have been replaced by the new cupolas of the closed type, equipped with automatic control and management system and multistage wet gas treatment system. Cupolas are equipped with systems of post-combustion gases and the batch charging, the separate systems of air blast, systems of sludge removal and recirculation of water, the slag granulation installations, mechanized cleaning of cupola furnace and automatic safety system. These activities allowed the company to increase production and improve the quality of cast iron, reduce the coke consumption by 20% and reducing emissions of pollutants into the atmosphere almost 30 times.

The analysis of the relation of physical-mechanical and chemical processes occurring in the metal-core contact area with perfection factors of the mold core is presented. The nature of interrelation of these processes with the formation of dimensional accuracy, geometric relationship, roughness and absence of defects on the internal surface of the casting is defined.

The principal approaches to modification of silumins have been analyzed. Results of the effect of various complex modifying agents on the structure and properties of aluminum-silicon alloys have been presented. Prospects of production of silumins that are different not only in strength properties but also in plastic properties have been analyzed.

The possibilities of the management of the original material properties in themold core blend, the processes of molding sand preparation, shaping and the conditions of technological preparation of mold cores for shaping high quality defect-free internal surfaces of the castings with required geometric relationship, dimensional accuracy and the surface roughness are considered.

The paper analyses production of reusable ceramic insulating inserts applied in permanent mold casting of aluminum alloys. It presents results of manufacturing of ceramic products from synthesized materials based on wollastonite, secondary grog, aluminum slag, etc. The paper demonstrates prospects of their applying.

The key criteria of the process of graphitizing modification of matrix melt silicon concentration and silicon assimilation evaluated were on samples of gray cast iron grade СЧ20 State Standard 1412-85. These criteria of evaluation on the structure and properties of casting ingots proved an efficiency of intra-mold modification of molten gray cast iron by dispersed ferrosilicon grade ФС75 State Standard 1415-93 (ISO 5445-80) using lost-foam casting (LFC-process).

This article presents the technological process of direct production of iron-carbon alloys from dispersed iron containing wastes in rotary tilting furnace, which allows to exclude the preliminary preparation of initial raw material.

Boundary problems of a two-dimensional temperature fields taking into account the interfaced thermal and hydrodynamic processes of formation of continuous cast ingots are developed. The numerical solution of a problem of non-steady temperature fields and temperature tension in ingots and a in the metal form in the course of their thermodiffusional interaction is received.

The present article describes prerequisites for the sustainable development of the Open Joint Stock company «The Belarusian Steel Works – management company of the Holding «Belarusian Metallurgical Company» and mechanism for preparation of the investment program of the enterprise for 2016–2020.

More and more countries worldwide implement new rules and regulations to improve energy efficiency and cut CO2 and hazardous off-gas emissions. Thus electric steelmakers need technology that keeps costs low, increases productivity and helps them adhere to environmental regulations. Decades of knowledge in preheating technology, and several different innovative applications which had been solution for many unique cases have been brought together and announced in 2010. EAF Quantum was designed as a pragmatic solution that meets requirements for high energy and cost efficiency, increased productivity and lowest emissions. Whether scrap, partly hot metal or direct-reduced iron (DRI) is charged, EAF Quantum is the solution for highly productive electric steelmaking at extra low conversion costs.

The article gives an overview of the global experience of recycling dust by briquetting. The advantages and disadvantages of recycling dust with its preliminary briquetting are described. Information about experiments on briquetting of dust generated in different organizations of the Belarusian metallurgy plant with various binders is given. Economic calculations were performed on the basis of technical data obtained during the manufacture of prototypes of briquettes. The results of the calculations showedinexpediency of recycling dust briquetting method because of the low iron content in the dust, high cost of binder and a relatively small rate of ecological tax.

Field tests of the witness samples of corrosion made of seamless hot-rolled pipes of various steel brands produced by JSC «BMZ – Management Company of Holding «BMK» were carried out in the operating pipelines at three oil fields. The results of the conducted researches made by the experts of RUP «ON «Belorusneft» permitted to define the most stable steel brands against corrosion for each of the oil fields: for a well 146 New and Davydovsky fields – brand steel TT309; for a well 270 Rechitsky fields – steel brands 20 and TT359; for a well 59 Ostashkovichsky fields – TT309 brand steel.

The paper presents a methodology that allows to estimate the energy efficiency of the furnace modernization by replacing the enwall, as well as to determine the feasibility of using a multi-layer structure depending on the operating temperature of the furnace and the heat transfer conditions at the surface. The methodology, which allows to calculate the temperature of the surface of the lining on cooling during the upload-download details.

Now on JSC «BSW – Management Company of Holding «BMC» the enormous work directed on modernization of capacities and creation of the new energy effective processes allowing to reduce final prime cost of a ready-made products is carried out. Basis of development of the enterprise are technical activities to eliminate an imbalance of process stages and creation of conditions to increase smelting of steel to the level of 3 million tons per year. Thus the main condition – ensuring full processing of cast preparation in ready products with higher value added.

This article outlines rational organization of work environment ‘5S’. Implementation of this system makes it possible to organize and rationalize working places, resulting in comfortable psychological climate and better labor efficiency.

The article shows the major environmental problems arising from the use of scrap in steelmaking. Presented conditions appearance in the electric furnace emissions of harmful substances and their control measures. Shown the advantages of a preliminary preparation and cleaning impurities of metal as one of the measures to reduce emissions from the furnaces into the atmosphere.

The results of comparative studies of fracture surfaces of high-strength cast iron in the as-cast state and after hot direct extrusion through an aperture of a conical die are presented.

The shape change of graphite inclusions and components of the metal matrix is examined with increasing the reduction ratio from 0 (as-cast state) to 80%.

For the fist time, using the electrochemical etching of the metal matrix of the cast iron, it is demonstrated experimentally that at plastic deformation the ductile flow of graphite inclusions occurs without fracturing of the latter. The surface morphology of a deformed graphite inclusion is revealed. It is shown that inside the inclusion the strain is distributed non-uniformly: the peripheral zones are deformed to a larger extent while the central part may retain its original radial structure.

The fact that the most part of graphite inclusions on the fracture surface of the deformed cast iron appeared undamaged (very small amount of fractured inclusions was observed) testifies against the common opinion that graphite acts as a crack nucleation site. A hypothesis is put forward that the crack nucleates in the metal matrix, presumably at the pearlite/ferrite interface, and propagates from one graphite inclusion to another rounding but not damaging the latter.

Composite materials with macroheterogeneous structure are a relatively new class of composites and are of great interest for application in heavy-duty friction, allowing sometimes to abandon bearings. Currently in practical use is made of composite materials with a matrix based on copper alloys. Scientific and practical interest and alloys based on aluminum, which will reduce the material cost and weight, as well as expand the range of products obtained. In work the method of synthesis of composite materials in induction melting, considered their tribological properties.

The cuprite density (Cu2O cuprous oxide) as a part of an eutectic of oxygen copper was determined by X-ray diffraction and by metallographic way. It is shown that the size of density of 6,2 g/cm3, the most often met in the reference books, cannot be used for calculation of quantity of oxygen in the deformed copper. By the X-ray diffraction analysis it is found value of density equal 2,14 g/cm3. By the metallographic analysis, on the basis of determination of the area of cuprite in the eutectic phase, gives value of density of 3,3 g/cm3.

The EU is one of the main trade partners of Belarus, Russia and Ukraine. The export operations between these countries and EU of foundry and metallurgical products according to Harmonized Commodity Description (Group 72 «Iron and Steel») in 2009– 2014 are analyzed. The information of three biggest export countries to EU is given on every of the abovementioned positions of HCD. Analysis of trends and variations of export from Belarus, Russia and Ukraine and some conclusions are given in the article.