• A
  • A
  • A
  • ABC
  • ABC
  • ABC
  • А
  • А
  • А
  • А
  • А
Regular version of the site
Of all publications in the section: 12
Sort:
by name
by year
Article
Chumachenko E. N., Aksenov S. A., Logashina I. V. Metallurgist. 2010. Vol. 54. No. 7-8. P. 498-504.
Energy conservation during hot shape rolling can be achieved by reducing of working temperature, optimization of rolling speed and calibration schedules, including a reduction of the passes number. For this, at the design stage of technology, it is necessary to produce a targeted search of the optimum characteristics associated with the large number of preliminary estimations and calculations. The speed of algorithms and techniques witch used in the process of the search plays a key role and directly determines its effectiveness. The paper describes the method of finite element simulation of shape rolling process based on «2,5 D» techniques, which is due to the number of simplifications, allows to increase the speed of calculation considerably (by comparison with 3D modeling). To verify this technique the comparison of model results with data obtained at a metallurgical plant «Třinecké železarny» in the special industrial experiment was performed. The comparison confirmed the adequacy and effectiveness of the proposed models and computer system developed on their basis.
Added: Apr 12, 2012
Article
Chumachenko E. N., Portnoi V., Logashina I. V. Metallurgist. 2015. Vol. 59. P. 69-75.

Different test methods are described to determine the mechanical properties of materials in the superplastic state. The flow stress depends on strain and strain rate, the structural parameter of the materials, and temperature. The rheology and mechanics of superplastic deformation are discussed. The methods have been checked for reliability and produced good results in testing titanium alloys and constructing mathematical models as part of an order submitted by the company EADS (Airbus). The information given on the test methods and the subsequent approximation of materials’ mechanical properties is of considerable interest for making reliable predictions of the deformation of materials during shaping operations. © 2015 Springer Science+Business Media New York

Added: Sep 7, 2015
Article
Chumachenko E. N., Logashina I. V., Zakhariev I. Y. Metallurgist. 2016. Vol. 60. No. 3. P. 460-465.

This article discusses research done on modeling, analyzing, and optimizing the technology used to forge the titanium sections of pressure vessels. The finite-element method was used for computer modeling of the deformation of the material during the forging operation. The study examined the forging force, the uniformity of deformation of the vessel’s walls, the filling of the dies, and the probability of crimping. Consideration was given to the possibility of using the phenomenon of superplasticity to forge the given product. The superplastic flow regime is maintained only during the final stage of the forging operation (the last 20% of the stroke of the die) in order to shorten operation as a whole. This is done by setting the die speed at a value which ensures that the material is deformed within a prescribed rate range and that the limits specified for the maximum forces are observed. Several alternatives were examined for making the vessel, these variants differing in the form of the semifinished product and the configuration of the dies. With constraints on the maximum loads and forging time, the technology that was chosen makes it possible to significantly increase the coefficient that characterizes the utilization of titanium in the production process.

Added: Sep 19, 2016
Article
Logachev K. A., Guzenkova A. S., Ivanov S. S. et al. Metallurgist. 2016. Vol. 60. No. 3. P. 296-298.

A gravimetric method is used to study corrosive wear of a test specimen – counterbody pair made of steel 40X in running water with pH 7.6 containing (g/liter): Ca2+ 0.035, Mg2+ 0.016, Cl– 0.023, SO42 – 0.039, with addition of alizarin oil (AO). It is established that AO in running water reduces the amount of corrosive wear in the load range 4.8–20.2 kg, and as load increases the protective effect of AO decreases from 52.4 to 1%.

Added: Aug 12, 2016
Article
Ivanov E. S., Guzenkova A. S., Ivanov S. S. Metallurgist. 2020. Vol. 63. No. 11-12. P. 1341-1344.
Added: Apr 27, 2020
Article
Логачев К. А., Гузенкова А. С., Иванов С. С. и др. Металлург. 2016. № 3. С. 48-50.

A corrosion wear of a pair of 40 H steel was investigated in the water from water supply line with pH 7,6 containing (g/l) Ca 2+ - 0,035; Mg2+ - 0,016; Cl- - 0,023; SO42- - 0,039 with alizarin oil (AO) addition.It was found out that inputting of AO in water pipe water reduced the value of corrosion wear within loadings 4,8-20,2 кg, while with increasing loading the screening effect of AO reduces from 52,4% to1%.

Added: Mar 18, 2015
Article
Чумаченко Е. Н., Аксенов С. А., Логашина И. В. Металлург. 2010. № 8. С. 34-37.

The paper describes the method of finite element simulation of shape rolling process based on 2,5D techniques which is due to the number of simplifications, allows to increase the rate of calculation considerably (by comparison with 3D modeling). To verify this technique the comparison of model results with data obtained at the metallurgical plant Trinecke Zelezarny within the special industrial testing was performed. The comparison confirmed the adequacy and effectiveness of the proposed models and computer system developed on their basis.

Added: Apr 12, 2012
Article
Чумаченко Е. Н., Портной В. К., Логашина И. В. Металлург. 2014. № 12. С. 68-71.

The various test methods for determining the mechanical properties of materials in a state of superplasticity were considered. The tension depends from the deformation and strain rate, the structural parameter and temperature. The rheology and mechanics of superplastic deformation were discusses. Methodology has been tested and gave good results when tested Ti alloys and constructing mathematical models commissioned by EADS (Airbus). Information about the method of testing and subsequent approximation of the mechanical properties is of great interest for the development of adequate forecasts materials forming by pressure.

Added: Feb 9, 2015
Article
Чумаченко Е. Н., Портной В. К., Логашина И. В. Металлург. 2015. № 1. С. 76-81.

The various test methods for determining the mechanical properties of materials in a state of superplasticity were considered. The tension depends from the deformation and strain rate, the structural parameter and temperature. The rheology and mechanics of superplastic deformation were discusses. Methodology has been tested and gave good results when tested Ti alloys and constructing mathematical models commissioned by EADS (Airbus). Information about the method of testing and subsequent approximation of the mechanical properties is of great interest for the development of adequate forecasts materials forming by pressure.

Added: Feb 9, 2015
Article
Чумаченко Е. Н., Логашина И. В., Захарьев И. Ю. Металлург. 2016. № 4. С. 102-105.

The paper is devoted to simulation, analysis and optimization of a forging technology for manufacturing of titanium sections of high-pressure apparatuses. Computer simulation of material forming during the forging was performed using finite element method. The punching force evolution was study as well as deformation uniformity of the product walls, fillability of the dies and the likelihood of defects. The possibility of using the superplasticity effect in forming process was considered. To reduce the process time, the superplastic mode was provided at the final stage of forming (the last 20% of the stamp stroke). To this end, the speed of the die was calculated in such a way as to ensure deformation of the workpiece in a predetermined strain rate range and comply with restrictions on the maximum load. Several technological solutions of the part manufacturer were considered varying the specimen form and the configuration of the dies. The technological solution was proposed which at given the constraints on the peak loads and forging time allows one to increase the metal utilization factor significantly.

Added: May 17, 2016
Article
Кычкин А. В. Металлург. 2015. № 9. С. 112-119.

The basic tasks of remote energy monitoring of industrial enterprises, including the steel industry as a focused long-term observation of the energy parameters, together with technological information for a given vector of criteria are formalized. An approach to the synthesis of a web-based system based on set-theoretic, parametric and structural modeling of remote energy monitoring is presented. Detailed structure of the system is based on the multi-function hardware-software complex, which has a modular organization, open interfaces, the original program code and licensed for free distribution. The results of the practical implementation of specific elements of the system of remote energy monitoring, synthesized structure in accordance with the proposed approach are presented. The method of efficiency estimation is proposed. The work was performed as part of the grant of the President of the Russian Federation for state support of young Russian scientists - candidates, MK-5279.2014.8 "Synthesis of efficient technologies for remote monitoring and managing of intellectual power system with active-adaptive grid"

Added: Feb 26, 2017