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Kolokoltsev V.M. , Petrochenko E.V., Ivanova I.V., Beriozova S.V. Influence of pouring temperature and cooling conditions of alloy to properties of cast tool steel for hot deformation stamps in mould The explorations by definition of rational intervals of pouring temperatures cast stamp steels for hot deformation 333 45 are presented in this research work. The mould is proved to change speed of cast cooling. The tendency of structure crushing is observed according to the refrigeration conditions. Speed of cooling alloys decrease leads to rough increase in samples structure. And then the size of dendrites of a primary austenite grows and carbides become larger. This process leads to mechanical properties lowering in comparison with results of the properties received at pouring in metal mould. It is recommended to choose the mould type regarding wall casting thickness and alloy pouring temperature in real conditions in casting production of stamps.
Key words: stamp steel, mechanical properties, structure, pouring temperature, speed of cooling.

Kablov D.Y., Sidorov V.V. Nitrogen in Single-Crystal High-Temperature Alloys Metallographic investigations into the structure and form of primary carbides in initial charge preparations with different nitrogen contents were carried out. A relationship between nitrogen admixture content in a high-temperature alloy and quality of single crystals obtained from such metal was revealed. Values of maximumadmissible nitrogen content in the alloy, at which a perfect single-crystal structure (SCS) forms during crystallization have been established.
Key words: high-temperature alloys, single-crystal blades, macrostructure of alloys.

Gerasimov V.V., Visik Y.M. Casting of Disc Blanks with Regulated Structure There is shown the possibility of using directional crystallization (DC) to produce disc blanks with a diameter of 100170 mm. Process regimes for producing such blanks on UVNK14 and UVNK10 units are given. An experimental lot of blanks with DC and single - crystal(SC) structures for making discs for small-size helicopter engines has been produced.
Key words: directional and single-crystal structures, directional crystallization units, hightemperature wrought alloys.

Deltsov S.V., Doroshenko V.A., Chudaykin A.I. , Udin V.A. , Sivkov V.L., Lyubimtzev .. Application of Digital Technologies in Making Polymer-Bonded Sand Molds and Cores without Tooling The article presents a solution for implementing direct production of sand molds and cores without tooling on the basis of the production technology complex (PTC) Sand Molds using digital technologies (DT) at OAO NIAT. There was produced a casting from AM4.5Kd alloy using end-to-end digital technologies of making polymer-bonded molds and cores.
Key words: Digital technologies, sand molds, selective hardening of the sand mixture, casting, aluminum alloy, cracks.

Novozhilov N.Y., Finkelshtein A.B. Use of Industrial Dispersant Polyplast TD in Molding Sands Compression strength, Orlov flowability and crumblability of green facing sands and dry core sands with an addition dispersant Polyplast TD were investigated as compared to industrial lignosulfonate (ILS). Sand compositions with Polyplast TD addition that have been successfully used at OAO Uraltransmash for over 2 years are recommended. Industrial tests of the sand showed a 24.5% reduction insmall sand holes and improvement of casting surface quality.
Key words: Molding sand, dispersant Polyplast TD, industrial lignosulfonate, moisture content, Orlovflowability, crumblability, green compression strength, sand hole.

Ten E.B. Centrifugal Casting of Turbogenerator Frame Blanks from High-Chromium Steel The article is dedicated to the development and implementation of engineering solutions aimed at reducing crack-related defects, gas inclusions and pores, as well as nonmetallic inclusions and pores in critical castings turbogenerator frames produced by centrifugal casting.
Key words: Centrifugal casting, casting, defects, nonmetallic inclusions, blister, pouring device.

Yemelyanov V.O., Martynov K.V., Mutilov V.N., Sokolov A.V., Sukhanova V.P. Water Solution of Silica Sol as an Alternative to Ethyl Silicate in Investment Casting (IC) The article is dedicated to the investment casting (IC) technology using water solutions of silicasol as an alternative to ethyl silicate (ETS). Process parameters of the promising binding composition are given, and, for comparability, characteristics of the LudexSKF binder are shown.
Key words: Silicasol, butylstyrene, ethyl silicate, binary binders.

Znamensky L.G. , Ivochkina O.V., Vertsyukh S.S., Varlamov A.S. Applications of alumina-boron-phosphate concentrate in moulding processes for investment casting New manufacturing technologies of production ceramic moulds with using of alumina-boron-phosphate concentrate are elaborated. They allow accelerating moulding cycle and improving the physical and mechanical properties of ceramic moulds. As a result the quality and economic efficacy of investment casting are improved.
Key words: Ceramic mould, investment casting, alumina-borophosphate concentrate.




Table of Content

Kolokoltsev V.M. , Petrochenko E.V., Ivanova I.V., Beriozova S.V. Influence of pouring temperature and cooling conditions of alloy to properties of cast tool steel for hot deformation stamps in mould

Kablov D.Y., Sidorov V.V. Nitrogen in Single-Crystal High-Temperature Alloys

Gerasimov V.V., Visik Y.M. Casting of Disc Blanks with Regulated Structure

Deltsov S.V., Doroshenko V.A., Chudaykin A.I. , Udin V.A. , Sivkov V.L., Lyubimtzev .. Application of Digital Technologies in Making Polymer-Bonded Sand Molds and Cores without Tooling

Novozhilov N.Y., Finkelshtein A.B. Use of Industrial Dispersant Polyplast TD in Molding Sands

Monastyrski A.V. ProCAST 2011.0 Whats new?

Ten E.B. Centrifugal Casting of Turbogenerator Frame Blanks from High-Chromium Steel

Yemelyanov V.O., Martynov K.V., Mutilov V.N., Sokolov A.V., Sukhanova V.P. Water Solution of Silica Sol as an Alternative to Ethyl Silicate in Investment Casting (IC)

Znamensky L.G. , Ivochkina O.V., Vertsyukh S.S., Varlamov A.S. Applications of alumina-boron-phosphate concentrate in moulding processes for investment casting

From the Proceedings of the 10th Russian Foundry Congress




Febuary 2012         April 2012

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