Number 12, 2021
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Isagulov A.Z., Kulikov V.Yu., Kvon Sv.S., Dostayeva A.M. Investigation of phase composition of heat-resistant alloys of FeAl system using Thermo-Calc program
The phase composition of the heat-resistant alloys of the Fe-Al system was investigated using the Thermo-Calc program. The phase diagram of the heat-resistant alloy is based on the Fe-C-Si-Mn-Al system with a mass percentage of aluminum and carbon. A phase diagram of the Fe-C-Si-Mn-Al-Cr system is also constructed. Isothermal sections at 1150?C and 750?C of Fe-Al-Cr system are modeled. It has been determined that co-alloying with aluminum and chromium shows more effective results than the addition of only one chromium.
Keywords: Heat resistance, alloy, modeling, system, isothermal section, aluminum.

Nurullin R.I., Fasonova N.V., Panfilov E.V., Martemyanov V.I. Casting of thin-walled turbine casings from heat-resistant steel under conditions of the Foundry Plant of PJSC KAMAZ
The technology of casting of thin-walled turbine casings using additive manufacturing is considered. For this purpose, 3D modeling of the casting process was used, which made it possible not only to evaluate the selected technology for manufacturing complex-shaped castings, but also to identify zones of shrinkage porosity in them. The use of 3D printing of cores on a 3D printer made it possible to manufacture the complex-shaped cores by combining several cores into one block, eliminate the labor and material costs to produce the core tool, as well as significantly reduce the labor content and time of castings production.
Keywords: Casting, engineering design, simulation, heat-resistant steel, structure, properties

Livshits V.B., Kushnir A.P. An influence of non-metallic inclusions and gases on the mechanical properties of silumins
An influence of non-metallic inclusions and gas content on the mechanical properties of chill castings made from silumins with different solidification ranges is considered.
Keywords: Silumins, solidification, non-metallic inclusions, gases, mechanical properties.

Prusov E.S., Panfilov A.A., Deev V.B., Lesiv E.M., Arakelyan S.M. Technological particularities of producing cast aluminum matrix composite materials with boron carbide by mechanical stirring
The authors proposed and tested rational technological parameters of liquid-phase production of aluminum matrix composites with boron carbide by the method of mechanical stirring and new technical solutions for the implementation of the reinforcement scheme using a preliminarily prepared mixture of mechanically activated powder precursors, which together ensure a uniform distribution of reinforcing particles in the volume of the melt and a high degree of their assimilation with minimizing of casting defects.
Keywords: Cast aluminum matrix composites, boron carbide, casting and metallurgical technologies, mechanical stirring.

Anvarov D.M., Titov A.Yu., Ten E.B. Investigation of the casting properties of LTsAF 94-0.5-0.15 brass
Research object is the brass LAF 94-0,5-0,15, which as simulator of gold ZlSrM583-80 use for making of jewelry and artistic articles by plastic deformation method. As casing alloy that brass not are use, therefore it casting properties are not study. At work researched the fluidity and fillability of it alloy. For that used accordingly the known the spiral sample and newly developed petal-shaped sample with four petal of 100 mm in length, 25 mm in width and 2.5, 5, 10 and 20 mm in thickness. According to experimental dates at pouring temperature 1160?C the brass fluidity on spiral sample compoused 300 mm. In this case it fillability, which appraised at the petal-shaped sample, showed that all petals with thickness from 2.5 up to 20 mm are fil up in full with accurate reproduction of borders. The received results is indicate about that the brass LAF 84-05-015 have the good casting properties and therefore must be used for making by casting method the articles of jewelry and artistic application.
Keywords: Alloy, brass LAF 94-0,5-0,15, casting properties, fluidity, fillability.

Doroshenko V.S. Lost foam casting with the use of vacuum-film molding and 3D-production of models
An overview of the lost foam casting processes is given, which considers options for elimination of the model gasification product emissions into the shop air and minimization of the mold sand contamination with these emissions. With the transition from casting with the use of 3D-printed polymer models, which are burned-out in furnaces from the shell molds, to the lost foam casting with the same models in evacuated molds made from loose sand, the process duration decreases and the production of a sand mold simplifies in the course of oxidation of gasification products. The use of additively manufactured models serves as an example of phygital transformation in the metalworking industry, brings the advantage of "the design flexibility", especially in the manufacture of bionic structures of lightweight castings.
Keywords: Lost Foam Casting Process, additive technology, 3D printing, vacuum-film molding, mold gas regime, gas neutralization, model gasification, ecological modernization

Scabini D., Gridina T.M. Flextrong: unity is strength!
The review analyzes the main technical characteristics and competitive advantages of the Flextrong composite material, considers technical solutions and examples of the introduction of this material in various enterprises of the foundry industry. Describes the problems and solutions using the Flextrong material.
Keywords: Refractory materials, refractory products, metal fiber, composites, mechanical strength, corrosion resistance.




Table of content

Isagulov A.Z., Kulikov V.Yu., Kvon Sv.S., Dostayeva A.M. Investigation of phase composition of heat-resistant alloys of FeAl system using Thermo-Calc program

Nurullin R.I., Fasonova N.V., Panfilov E.V., Martemyanov V.I. Casting of thin-walled turbine casings from heat-resistant steel under conditions of the Foundry Plant of PJSC KAMAZ

Livshits V.B., Kushnir A.P. An influence of non-metallic inclusions and gases on the mechanical properties of silumins

Prusov E.S., Panfilov A.A., Deev V.B., Lesiv E.M., Arakelyan S.M. Technological particularities of producing cast aluminum matrix composite materials with boron carbide by mechanical stirring

Anvarov D.M., Titov A.Yu., Ten E.B. Investigation of the casting properties of LTsAF 94-0.5-0.15 brass

Doroshenko V.S. Lost foam casting with the use of vacuum-film molding and 3D-production of models

Scabini D., Gridina T.M. Flextrong: unity is strength!




November 2021         January 2022


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