Abstracts:
Shipelnikov A.A., Rogotovsky A.N. , Kravchenko T.V. Research of Efficiency of modifying of pig-iron СЧ03Ц01Б for Receptiom of thin-walled Preparations
Results of research of influence of parameters of modifying of pig-iron СЧ03Ц01Б on structure and hardness of the thin-walled preparations received on foundry technology Cold box amin-process are presented.
Key words: modifying, pig-iron, structure, hardness, casting
Afonaskin A.V., Bystrov M.V., Churkin B.S. , Brusnitsyn S.V. Sand Compositions Providing High Compliance and Knockout Capability of Cores
The article discusses the processes of making molds and cores based on highsilicon sodium silicate binders for critical valve castings.
Key words: sodium silicate bonded sand, modulus, ferrochrome slag, phenol resins, hardeners.
Matveyenko I.V. , Sokorev A.A. Results of Grinding Fireclays down to Nanoscale Composition
The regularities of gaining the activity in “dry” fragmentation, with sodium salts of complex phosphoric acid and along with ethanol 95%. The use of ethanol 95% allowed to increase the output of clay nanofractions from 5…8 to 35% and classify them according to the activity production in nano-micron size interval.
Key words: fragmentation, activation, refractory clay, surface-active substance, molding sand, strength, refractory materials, classification.
Stancek L. , Batyshev A.I., Vanko B. , Sedlacek J. Influence of Melt Cooling and Flow Rates on Casting Structure in Casting with Crystallization under Pressure
The article describes a procedure of making castings from Al-Si7-Mg0.3 silumin with a globular structure of solid solution under high external pressure during melt crystallization. Mutual influence of high gradients of flow rate of the alloy being crystallized and high cooling rates at different temperature gradients is evaluated.
Key words: globular structure, dendrites, pressure, melt, plunger.
Kotov A.N., Buynovsky A.P. , Polikarpov Y.Y., Krivenko G.G., Yefimov A.A. Gating System in Investment Casting of Large-Size Castings
Herein the unified elements of the gating supply system for producing large-sized castings, made of high-alloy steel and heat-resistant alloys, by dispensable pattern casting are presented.
Key words: foundry, dispensable pattern casting, gating supply system, model bloc, ingate, gate, air gate, feeder, feed apparatus
Gushchin N.S., Nuraliyev F.A., Petrov L.A., Semyonov P.V. Regulation of Heat Removal Intensity from Cast Metal in Centrifugal Casting
Various types of coatings used in centrifugal casting are discussed. Process features influencing the intensity of heat removal from cast metal are defined, examples of using various types of heat insulation in centrifugal casting are given.
Key words: centrifugal casting, ingot mold, wash, friable heat insulation, quartz sand, burn-on preventing coating, marshalite, disthenesilimanite, zircon.
Ogorodnikova O.M. Residual stresses in casting
The origin of residual stress formation during the casting process is discussed in the article. The restricting residual macro-stresses were investigated with use of computeraided-engineering software LVMFlow. For this purpose a special sample geometry made of cylindrical bars and Al-Si cast alloys were selected. Existence of solid aluminum in only one lattice modification enables to except phase stress from total stresses arising within the casting. The behavior of residual macro-stresses caused mainly by geometry restriction was revealed.
Key words: computer simulation, cast alloy, residual stress
Table of Content
Golubtsov V.A., Dynin A.Y., Usmanov R.G. On the Situation that Emerged in the Domestic Foundry Industry
Shipelnikov A.A., Rogotovsky A.N. , Kravchenko T.V. Research of Efficiency of modifying of pig-iron СЧ03Ц01Б for Receptiom of thin-walled Preparations
Afonaskin A.V., Bystrov M.V., Churkin B.S. , Brusnitsyn S.V. Sand Compositions Providing High Compliance and Knockout Capability of Cores
Matveyenko I.V. , Sokorev A.A. Results of Grinding Fireclays down to Nanoscale Composition
Stancek L. , Batyshev A.I., Vanko B. , Sedlacek J. Influence of Melt Cooling and Flow Rates on Casting Structure in Casting with Crystallization under Pressure
Kotov A.N., Buynovsky A.P. , Polikarpov Y.Y., Krivenko G.G., Yefimov A.A. Gating System in Investment Casting of Large-Size Castings
Gushchin N.S., Nuraliyev F.A., Petrov L.A., Semyonov P.V. Regulation of Heat Removal Intensity from Cast Metal in Centrifugal Casting
Turilova K.K. Pilot Program of Resource Efficiency for Foundries
Ogorodnikova O.M. Residual stresses in casting
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