Klochikhin V.V., Gemanyuk P.D., Naumik V.V., Tsivirko E.I. Influence of crystallization conditions on the quality of heat-resisting alloys melted with foundry returns
Best cleaning technology foundry return is fraction-jet processing followed by electrocorundum blasting and etching. Directed crystallization nickel alloys compared with bulk provides refining alloy impurities from oxygen, nitrogen, iron, lead and nitride, carbonitride and oxide inclusions. Lowtemperature vacuum remelting, casting waste nickel alloys HA32-VI and HA26-VI at melting furnace PMP-4M allows to minimize burning away of active expensive alloying elements (tantalum, rhenium, niobium, etc.).
Key words:Heat-resistant nickel alloy, foundry returns, on-the reign of crystallization, chemical composition, microstructure constituents.
Modzelevskaya O.G., Kiselev E.A., Feoktistov A.V., Mashkin B.A., Selyanin I.F., Kutsenko A.A. Molding of bathtubs from cast iron modified by Ba-Cr-carbonate
This paper deals with effect of modifying the ability of barium-strontium carbonate (BSC-2) used in the manufacture of cast iron bathtubs for casting, the chemical composition of cast iron and slag samples baths microstructure, hardness, fluidity, the level and types of marriage baths. The analysis of these parameters at various technologies modification of cast iron using BSC-2. It was established that the most effective technique is a modification of cast iron in the ladle after overheating induction 1390?1400?C mixer at a temperature with the addition of BSC-2 according to size class 2 in a quantity of 5 kg/ton.
Key words:Modification of cast iron, Ba–Cr-carbonate (BSC-2), fluidity.
Svinoroev Yu.À. Enhanced lignosulfonate binder durability
On the modern stage, the ways of overcoming of problem of resource deficit consist of rationalization of the use of present resource potential. In this context it is expedient to utillize the second products of processing of vegetable raw material, due to expansion of application of LST materials.
Key words:Resource-saving, lignosulfonate materials, foundry binding materials, vegetable raw materials, disintegration processing.
Gilmanshina T.R., Babkin V.G., Baranov V.N., Koroleva G.A., Lytkina S.I., Khudonogov S.A. Water and quick-drying antipenetration wash on the basis of enriched graphites for cast iron molding
Properties of water-based and quick-drying nonstick coatings based on enriched and activated graphite. It has been demonstrated that the enrichment of activated carbon provides increase in strength of the coating by 200%, sedimentation stability – by 12...15%, heat resistance – by 30...40% with a decrease in the flow of dry ingredients by 15...20%. Quick-drying nonstick coating for iron casting based on enriched graphite was proposed, which consists of two dry compositions with surfactants: graphite and polymer, ratio of 1:1; sedimentation stability of such coating is 1.2–1.4 times higher than sedimentation stability of a standard coating, and consumption of coating material is lowered by 15...20%.
Key words:Graphite, enrichment, activation, nonstick coating, water-based, quick-drying.
Bezpalko V.I., Smolkin A.A. Influence of pressure solidification casting on Al-castings macrostructure
The article deals with Influence of technological parameters of pressure solidification casting on macrostructure of alpax cylindrical castings.
Key words:Pressure, structure, casting, alloy, crystals, mold temperature, liquid-alloy overheat.
Afanasyev V.K., Gorshenin A.V., Dolgovà S.V., Samon V.A., Popovà M.V. Injection molding of cupreous silumin
The regularity of the microstructure changes, mechanical properties and thermal expansion of the alloy Al–11%Si–4%Cu, obtained by injection molding. Found that a factor determining the properties of the alloys Al–Si with and without additions of copper, is hydrogen. The methods of preparation of the alloy Al–11%Si–4%Cu, allowing it to obtain an optimum combination of strength, ductility and thermal expansion based on changing content of hydrogen guided through the bath atmosphere over water vapor. The paper discusses the prospects of the developed alloy for the needs of instrument technology.
Key words:Hydrogen, water vapor atmosphere, thermal expansion, mechanical properties, melt processing, injection molding, heat treatment.
Anderson V.A., Kotovich A.V., Lugansky N.N., Salagor A.V. Development and mastering of steel workpiece casting made by gasifiable pattern process instead of lost-wax processÎðãàíèçàöèÿ ïðîèçâîäñòâà
The article is devoted to development of optimum gasifiable model molding technology for precise steel workpieces instead of lost-wax technology. The new technology based on copolymers, instead of traditional polystrene, allowed to achieve high-quality steel castings with minimum carburizing. The technology parameters have been optimized on a new equipment complex brought in production on “JSC Sarapul Electrogenerating Plant”, Sarapul, Udmurtia
Key words:Gasifiable pattern molding, precise castings, expanded polystyrene, molding and pouring line.
Lugansky N.N., Treshchalin V.V., Korneyev S.Y., Starikov V.V. Start of a new foundry complex on “JSC Sarapul Electrogenerating Plant”
A description of a new foundry shop of special methods for receiving small castings from non-ferrous alloys, steel and cast iron weighing up to 80 kg, with application of eight molding processes is given: die casting, low and high pressure casting, gasifiable pattern process, no-bake, etc., including freezing-out method, with heat-treatment and finishing operations cell.
Key words:Progressive technologies, no-bake mold, special molding methods, new foundry shop.
Smirnov M.Yu. Marketing researches of modern foundry productions in Scandinavia by example of pump castings
The article provides an overview of efficient state-of-the-art foundry plants in Scandinavia, producing castings for the pump industry, as an example of equipping with modern molding equipment for Russian foundries. Modernization plans of the company Krontif-center, Lyudinovo on the basis of own marketing researches of successful world experience – as further guarantee of creation of the efficient foundry production.
Key words:Innovations, efficient foundry production, modern technologies of molding and coremaking.
Table of content
Klochikhin V.V., Gemanyuk P.D., Naumik V.V., Tsivirko E.I. Influence of crystallization conditions on the quality of heat-resisting alloys melted with foundry returns
Modzelevskaya O.G., Kiselev E.A., Feoktistov A.V., Mashkin B.A., Selyanin I.F., Kutsenko A.A. Molding of bathtubs from cast iron modified by Ba-Cr-carbonate
The interview with general director of Trading Company «MashStal», LLC A.N. Rodionov
Svinoroev Yu.À. Enhanced lignosulfonate binder durability
Gilmanshina T.R., Babkin V.G., Baranov V.N., Koroleva G.A., Lytkina S.I., Khudonogov S.A. Water and quick-drying antipenetration wash on the basis of enriched graphites for cast iron molding
Bezpalko V.I., Smolkin A.A. Influence of pressure solidification casting on Al-castings macrostructure
Afanasyev V.K., Gorshenin A.V., Dolgovà S.V., Samon V.A., Popovà M.V. Injection molding of cupreous silumin
Anderson V.A., Kotovich A.V., Lugansky N.N., Salagor A.V. Development and mastering of steel workpiece casting made by gasifiable pattern process instead of lost-wax processÎðãàíèçàöèÿ ïðîèçâîäñòâà
Lugansky N.N., Treshchalin V.V., Korneyev S.Y., Starikov V.V. Start of a new foundry complex on “JSC Sarapul Electrogenerating Plant”
Smirnov M.Yu. Marketing researches of modern foundry productions in Scandinavia by example of pump castings
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