Number 5, 2024
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english version
 
 
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Ageev Yu.A., Vlasova I.S., Vlasov V.N. Study of the oxidation of magnesium modifiers of cast iron
The article presents a study of the oxygen content in the commodity grains and screenings of the cast iron modifier grade FSMg7, supplied by JSC NIIM on T 14-5-320-2010. It is shown that the total oxygen content, determined by chemical analysis (Och), is the sum of its content in slag inclusions (Osl) and its amount associated with the metal surface atoms of the modifier (Osur). It is established that Osl in the commodity grains and screenings modifier different fractions in the same way. The concentration of oxygen Osur is inversely proportional to the size of the modifier particles: Osur = k/l , where k = 0.123% mm, l linear particle size, mm. The average content of Osur in the modifiers commodity grains with a particle size of 15 mm does not exceed 0.05% wt., in screenings with a particle size of less than 1 mm 0.48%.
Keywords: Magnesium modifier of cast iron, commodity grains, screenings, oxygen, slag inclusions, surface concentration, particle size, fraction.

Korotchenko .Yu., Vinogradov I.D. Technology for manufacturing casting from titanium alloys (review)
The article provides an overview of the mechanical and technological properties of the main serial cast titanium alloys VT5L, VT6L, VT20L and the new economically alloyed titanium alloy VT40L. Traditional and new methods for manufacturing castings from titanium alloys are considered. The design of the gating-feeding system (GFS) for centrifugal casting in ceramic molds, casting under the pressure and MIM-technologies.
Keywords: Titanium alloys, mechanical properties, casting properties, centrifugal casting, ceramic mold, vacuum arc melting, vacuum induction melting, pressure casting, MIM-technology.

Sanin V.N., Yukhvid V.L. Current status and prospects for the development of technologies for obtaining cast alloys by centrifugal SHS metallurgy
Experimental results are presented on the production of cast alloys based on Co, NiAl, FeAl, refractory metals (Nb, Mo, Cr), high-entropy alloys (HEA) by centrifugal SHS metallurgy. The main advantages and disadvantages of the method and the prospects for its development are noted.
Keywords: SHS metallurgy, cast alloys, master alloys.

Illarionov I.E., Smirnov E.A., Zhirkov E.N., Strelnikov I.A. Development of non-stick coatings for casting molds and cores using borate compounds
Based on the experimental data obtained, an effective non-stick coating has been developed with the following composition, wt.%: graphite 40; bentonite 10; binder 0.5; borate compound (GBKO, GBKL, GBKLN) 16. Molds and rods coated with developed non-stick coatings had a clean surface without smudges or sagging. After drying, the surface layer had no cracks, and the adhesion of the non-stick layer to the substrate was good. All steel and cast iron castings had a clean surface.
Keywords: Casting molds and cores, non-stick coatings, glyceroborate complex of oleic acid, density, viscosity, suspension, sedimentation resistance, compressive strength, abrasion strength, hiding power, burn on the surface of the casting.

Znamensky L.G., Zakharov N.A., Sinitsyn E.A. Ceramic rods on the base of Neorganica binder for castings intended for the oil and gas industry
The article analyzes the processes of manufacturing ceramic rods. In order to improve, the technology of manufacturing ceramic rods from inorganic, environmentally friendly domestic materials were developed. The effectiveness of the development was achieved through the use of an aqueous metallophosphate binder "Inorganic" and mullitized fillers of domestic production. The composition and properties of the molding materials were studied using quantitative X-ray phase analysis, derivatography and dilatometry, and the physical and mechanical characteristics of the obtained ceramic rods were determined. Experimental and industrial tests of the developed technology at LITPRO LLC (Chelyabinsk) have shown the possibility of reducing the defect of a narrow-channel solid-cast rotor for sectional centrifugal pumps (SCP) and improving the quality of their manufacture.
Keywords: Investment casting, cold-hardening rods, ceramic rod, binder "Inorganic", mullitized filler, oil and gas complex.

Verbitsky V.I. Vibropress molding machines
A fairly simple design of the press unit of a vibrator molding machine is presented, and an analysis of its operation and effectiveness in the manufacture of half-molds of different heights is performed. Computer modeling made it possible to select drive parameters close to optimal, taking into account the imposed restrictions. It has been confirmed that with the correct choice of parameters of the press and vibrator, it is possible to achieve high compaction of the mixture in a very short time for low casting molds.
Keywords: Press, vibrator, energy and frequency of impacts, pressure, mixture density, efficiency.

Shabaldin I.V., Prusov E.S., Deev V.B. Designing software solutions for special applications in metallographic analysis
Approaches to the development of new software of modular type for solving typical and special tasks of metallographic analysis in automated mode are described. On the example of cast composite material Al + 18% wt. Mg2Si, the method of quantitative estimation of the uniformity degree of distribution of structural constituents, realized by the authors on the basis of the developed software, is considered.
Keywords: Quantitative metallographic analysis, software, aluminum matrix composites, distribution of structural constituents.

Mikhailov O.V., Yemelyanov V.O., Druzhevsky M.A., Sokolov A.V. Customer-oriented approach in art castings
The development of market relations sets the task for manufacturers of artistic casting to meet the needs of customers as much as possible. Satisfaction of demand moves into the plane of studying the causes of emotions that artistic casting causes. The psychology of consumption became the basis for the development of a compositional solution. We realize the manufacturer's interest in maximizing the production load, provided that the products are sold. At the same time, the product must be suitable for the customer not only in terms of meeting demand, but also to win in competition with other manufacturers. A symbolic approach is appropriate here, reflecting the mood in society, its history and development prospects.
Keywords: Artistic casting, psychology of consumption, consumer motivation, symbolic representation, foundry, integrated approach.

Shaikhutdinova I.I., Gaintseva E.S. Formation of a knowledge base for casting of aluminum alloys
The formation of a knowledge base for choosing the optimal method for casting of aluminum alloys is considered. Factors influencing its choice are described, including requirements to the production program, dimensional accuracy and economic efficiency of casting production. The presented analysis will allow enterprises to optimize effectively production processes and ensure high quality of aluminum alloy castings.
Keywords: Aluminum alloys, casting methods, castings, knowledge base.




Table of content

Ageev Yu.A., Vlasova I.S., Vlasov V.N. Study of the oxidation of magnesium modifiers of cast iron

Korotchenko .Yu., Vinogradov I.D. Technology for manufacturing casting from titanium alloys (review)

Sanin V.N., Yukhvid V.L. Current status and prospects for the development of technologies for obtaining cast alloys by centrifugal SHS metallurgy

Illarionov I.E., Smirnov E.A., Zhirkov E.N., Strelnikov I.A. Development of non-stick coatings for casting molds and cores using borate compounds

Znamensky L.G., Zakharov N.A., Sinitsyn E.A. Ceramic rods on the base of Neorganica binder for castings intended for the oil and gas industry

Verbitsky V.I. Vibropress molding machines

Shabaldin I.V., Prusov E.S., Deev V.B. Designing software solutions for special applications in metallographic analysis

Mikhailov O.V., Yemelyanov V.O., Druzhevsky M.A., Sokolov A.V. Customer-oriented approach in art castings

Shaikhutdinova I.I., Gaintseva E.S. Formation of a knowledge base for casting of aluminum alloys




April 2024         June 2024


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