Journal articles: 'Induction furnaces'

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Lubyanoi, D. A., S. A. Fomkin, A. V. Kukharenko, D. D. Lubyanoi, A. V. Markidonov, and Yu N. Soina-Kutishcheva. "Regarding a technology of Sulphur removal in acidic induction furnaces." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 75, no. 6 (July 26, 2019): 689–94. http://dx.doi.org/10.32339/0135-5910-2019-6-689-694.

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Sulphurremoval is a rather complicated metallurgical task, which require implementation of new energy-saving technologies, including metal desulphurization in induction furnaces. Results of analysis of different methods of metal desulphurization in the acidic induction furnaces. A technology of hot metal refining with Sulphurremoval by basic slags by extraction mechanism in the acidic induction furnaces proposed, tested and implemented at several plants. The essence of the xtraction mechanism applied to desulphurization method is as follows: particles of calcic slag involved by electromagnetic flows deep into an induction furnace. The surface layer of slag particles deoxidizes by carbon of the metal and silicon, resulting in the Sulphursolubility increases sharply due to its absorption by the metal surface layer of slag particles. Next, the metal flows deliver to the surface the slag particles saturated by Sulphur, the surface contacted with the furnace atmosphere, where the surface layer of slag particles is oxidized by oxygen of the atmosphere. It results in the Sulphursolubility decreasing sharply and after precipitating out of the slag; it oxidizes by oxygen to SO2 and removes into the furnace atmosphere. The process repeats multiply. The mechanism of theSulphur removal in the induction furnaces with acidic lining was studied at OJSC ZSMK foundry shop using IChT-10M furnaces when melting hot metal for melt bases and warmth-keeping jackets. To increase the proposed technology efficiency, the influence of different technological parameters on the rate and degree of metal desulphurization in the acidic induction furnaces of industrial frequency studied. Results of the study allowed to make a conclusion that induction furnaces, traditionally used for smelting of burden materials, convert into active refining melting facilities.

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Kuvaldin, A. B., Maxim A. Fedin, A. O. Kuleshov, and I. Y. Zhmurko. "Development of Relay Control Systems of Power and Temperature Mode of Induction Crucible Furnaces with Use of Physical Modeling." Materials Science Forum 906 (September 2017): 8–15. http://dx.doi.org/10.4028/www.scientific.net/msf.906.8.

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The physical models of the induction crucible furnaces with nonconducting crucible and conducting crucible were developed. Experimental study of the parameters of an induction crucible furnace for melting of ferromagnetic lumpy charge in ferromagnetic nonconducting crucible was made. Experimental study of the parameters of the furnace for melting copper and magnesium in conducting crucible was made. Three-position control system of active power of induction crucible furnace for melting of ferromagnetic lumpy charge and two-position control system for temperature regime of induction crucible furnaces with conductive crucible were developed.

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Levshin, G. E. "Magnetization of ferromagnetic charge at induction heating." Izvestiya. Ferrous Metallurgy 65, no. 2 (March 16, 2022): 85–91. http://dx.doi.org/10.17073/0368-0797-2022-2-85-91.

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The article presents analysis of magnetization and heating of ferromagnetic charge in crucibles of induction furnaces of two types. In inductor furnaces, the charge is magnetized by a vertical electromagnetic flow, and in electromagnetic furnaces with a curved U-, C-, or O-shaped magnetic circuit (MPr) – by a horizontal flow. Knowledge of these largely general magnetization processes is insufficient. Bi magnetic induction in charge material is rather important. There are difficulties in determining this parameter during magnetization of a single piece of charge and other magnetic quantities associated with it: Bm induction and Nm strength of the demagnetizing field, N demagnetization coefficient, M magnetization, magnetic permeabilities of μi substance and μt body, km susceptibility, etc. Difficulties increase at magnetization, if it is a porous body with crucible volume of ~V t and a factor of filling with ferromagnetic pieces of this volume of Kv ≤ 0.5. It also creates a demagnetizing field with Bmt induction and Hmt strength. Beyond that, pores have an additional demagnetizing effect. Therefore, the induction Вiт in a porous body is less than the induction Вi in a solid one. To compare magnetization of ferromagnetic charge with horizontal and vertical flows with frequency of 50 Hz, modeling experiments were carried out with the samples of DSL08 unconsolidated shot from high-carbon steel (GOST 11964 – 83) with Kv ≈ 0.53. The samples were placed in the inductor and between the poles of a U-shaped core piece. Induction was measured by a cylindrical and flat probe unit of Sh1-15 militeslameter in air and in the sample. An advantage of electromagnetic furnace over an inductor one is more uniform distribution of Bi induction in charge and its significant excess (1.7 times) over the Be induction in a furnace working cavity, which indicates more efficient use of electromagnetic energy in this furnace during heating. The author proposed to control Вi induction when heating the charge by the ammeter-voltmeter method using measuring coil made of heat-resistant wire.

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Kukartsev, Viktor A., Vladislav V. Kukartsev, and Vadim S. Tynchenko. "Cast Iron and Steel Smelting in Induction Crucible Furnaces of Industrial Frequency." Solid State Phenomena 299 (January 2020): 530–34. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.530.

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A brief analysis of the cast iron and steel smelting in induction furnaces of industrial and medium frequency has been carried out. The analysis of the used metal scrap for the smelting of synthetic iron in induction melting furnaces with a padded lining of a lining mixture, based on quartzite, is carried out. The requirements for temperature melting modes, which are regulated by this type of melting furnaces developers, are reflected. The advantages and disadvantages of using induction crucible furnaces of industrial and medium frequency are considered. The features of smelting synthetic pig iron in Russia are noted, the main of which are the following: the absence of cast iron scrap, which makes it necessary to use a metal scrap from a single steel scrap, and use temperature melting conditions above 1450 ° C; use a lining based on quartzite, as the cheapest, but sharply reducing its resistance to the operation of the furnace at such melting temperatures (from 300-350 to 200-250 smelts). The actuality of the possibility of steel smelting in induction crucible furnaces of industrial frequency with the use of acid lining, based on the Pervouralsk quartzite, is substantiated. It is explained by the fact that existing foundries are equipped mainly with induction melting furnaces of industrial frequency, and the use of induction melting furnaces of medium frequency requires considerable material costs.

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Choi, Yulim, Hyeonho Kwun, Dohee Kim, Eunju Lee, and Hyerim Bae. "Residual Life Prediction for Induction Furnace by Sequential Encoder with s-Convolutional LSTM." Processes 9, no. 7 (June 28, 2021): 1121. http://dx.doi.org/10.3390/pr9071121.

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Induction furnaces are widely used for melting scrapped steel in small foundries and their use has recently become more frequent. The maintenance of induction furnaces is usually based on empirical decisions of the operator and an explosion can occur through operator error. To prevent an explosion, previous studies have utilized statistical models but have been unable to generalize the problem and have achieved a low accuracy. Herein, we propose a data-driven method for induction furnaces by proposing a novel 2D matrix called a sequential feature matrix(s-encoder) and multi-channel convolutional long short-term memory (s-ConLSTM). First, the sensor data and operation data are converted into sequential feature matrices. Then, N-sequential feature matrices are imported into the convolutional LSTM model to predict the residual life of the induction furnace wall. Based on our experimental results, our method outperforms general neural network models and enhances the safe use of induction furnaces.

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Catur Ahadi, Yeyen, and Prantasi Harmi Tjahjanti. "Furnace Engine Modification to Lower Power." Jurnal Improsci 1, no. 2 (October 16, 2023): 99–109. http://dx.doi.org/10.62885/improsci.v1i2.69.

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Furnace machine or heating furnace is a tool used for heat treatment processes or usually called heat treatment, furnace machines have several types from the beginning found furnace machines, namely induction furnaces/conventional furnaces and then transformed into electric furnaces, electric furnaces are more often used for processes heat treatment because it is cleaner compared to the convection furnace.The furnace machine requires 5000 watts of power, 13.1A. to reach the temperature of 8000 takes 7296 seconds. Furnace machine testing is by quenching using ST-42 steel which is held at 6000 and varying time, the first test material is not treated with heat traetment, for the second test material with a variation of 15 minutes, third 30, fourth 60, fifth 90, sixth 120 minute. the results of the quenching process were tested using the Brinell and Vickers hardness test methods.

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Grachev, V. "Features of Cast Iron Smelting in Induction Crucible Furnaces." Archives of Foundry Engineering 17, no. 3 (September 1, 2017): 45–50. http://dx.doi.org/10.1515/afe-2017-0088.

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Abstract The article describes the trend towards increased use of induction crucible furnaces for cast iron smelting. The use of gas cupola’s duplex process – induction crucible furnace – has been proved the effective direction of scientific and technical advance in the foundry industry. Gas cupolas and induction furnaces are used for cast iron smelting at the Penza Compressor Plant where in the 1960s the author developed and introduced gas cupolas for the first time in the world. In the article, the author represents the findings of the investigation on thermodynamics of crucible reduction of silicon, which is pivotal when choosing the technological mode for cast iron smelting in induction furnaces. The author proposes a new reaction crucible diagram with due account of both partial pressure and activity of the components involved into the process. For the first time ever, the electrochemical mechanism of a crucible reaction has been studied and the correctness of the proposed diagram has been confirmed.

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Levshin, G. E. "WAYS TO IMPROVE INDUCTION CRUCIBLE FURNARES." Izvestiya. Ferrous Metallurgy 62, no. 2 (March 30, 2019): 97–102. http://dx.doi.org/10.17073/0368-0797-2019-2-97-102.

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Analysis of the main drawbacks caused by increased walls thickness of a lined crucible, presence of tubular copper single-layer inductor cooled from inside with standard water and absence or presence of core I-shaped magnetic circuits arranged around it forming a discrete ferromagnetic screen, was made for modern induction crucible furnaces. The first drawback is that a significant part of working electromagnetic flow Fwork is not used for effective heating, since it passes along the non-conductive lining of crucible, and not along the cage. Therefore, only 38.5 – 57.0 % of the flow Fwork is effectively used. The second drawback is increased cost and complexity of manufacturing of inductor coils from a special copper tube, which vibrate at twice the frequency, creating noise and weakening design of the furnace. Such inductors are characterized by reduced electrical efficiency and increased cost of preparation and cooling of conditioned water in systems that occupy an area several times greater than the area of furnace itself. The third drawback leads to the fact that a significant part of electromagnetic scattering flow of the Fconsupt does not participate in heating of charge and melt, but heats conductive elements of furnace, including surrounding magnetic inductor. Irrational use of total flow F, created by inductor, reduces its efficiency to almost 19 – 30 %, and the power factor cosφ to 0.03 – 0.10 and increases energy consumption. To reduce or eliminate disadvantages, three ways of improving these furnaces are proposed and justified: reducing thickness of crucible wall with its simultaneous hardening by installing a cylindrical shell between the crucible and the inductor, surrounding the inductor with an annular magnetic circuit and using a single or multiwire inductor instead of a tubular one. Combination of cylindrical shell, annular magnetic circuit, as well as the upper and lower plates of the furnace frame can form an annular closed cavity to accommodate wire inductor and circulating refrigerant, cooling the inductor and the magnetic circuit. As a result of the study, new design of induction crucible furnace with wire inductor and ring-type magnetic circuit developed at AltSTU is proposed, substantiated and patented. Based on experimental determination of effectiveness of the proposed structural elements, conclusion is made about the prospects for further research.

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Levshin, G. E. "Improving Induction Crucible Furnaces." Steel in Translation 49, no. 2 (February 2019): 82–86. http://dx.doi.org/10.3103/s0967091219020116.

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Kukartsev, Viktor A., Vladislav V. Kukartsev, and Vadim S. Tynchenko. "The Peculiarities of Smelting of Wear-Resistant Cast Iron IChH28N2 in the Induction Crucible Furnace IChT10." Solid State Phenomena 299 (January 2020): 397–402. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.397.

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Wear-resistant cast iron smelting is produced in electric arc furnaces, due to the use of steel scrap in metal charge, ferrochrome and refund if there is one. Scrap of cast iron with the necessary chemical composition is not present because the proportion of manufacturing parts from wear-resistant cast iron is very small. Thus, there is no opportunity to form castings of wear-resistant cast iron using foundries equipped only with induction crucible furnaces of industrial frequency (IChT), since the furnace is designed for melting temperatures not above 1500 °C. In addition, the lining of induction furnaces of industrial frequency is made of quartzite, which provides the necessary durability when operating at temperatures not above 1500 °C. The ability to manufacture blanks from wear-resistant cast iron gives an additional opportunity to expand the range of orders and prevent a reduction in production in factories equipped only with the smelting furnaces of the IChT. The article describes the peculiarities of smelting cast iron IChH28N2 in the furnace IChT10 with acid lining. The technology of conducting melting on pure charge materials without use of cast iron scrap and return is briefly described.

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Goryslavets, Yu M., O. I. Gluhenky, and V. I. Zalozny. "MODELING OF ELECTROMAGNETIC PROCESSES IN INDUCTION CHANNEL FURNACES TAKING INTO ACCOUNT METAL FRAMES." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2023, no. 64 (May 8, 2022): 64–69. http://dx.doi.org/10.15407/publishing2023.64.064.

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On the basis of the formulated mathematical model for the study of electromagnetic processes in a two-phase (two-inductor) induction channel furnace, electrical losses in the metal frameworks of the furnace were calculated for vari-ous options for their sectioning. The influence of the phase angle between the voltages feeding the inductors of the fur-nace on the distribution of specific and integral losses in the frames is determined. Practical recommendations for re-ducing these losses in order to increase the efficiency of melting furnaces are presented. Ref. 5, fig. 5.

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Levshin, G. E. "Investigation of electromagnetic furnaces with a C-shaped magnetic core." Izvestiya. Ferrous Metallurgy 66, no. 4 (August 17, 2023): 492–97. http://dx.doi.org/10.17073/0368-0797-2023-4-492-497.

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The paper describes design features, methodology and results of the study of 10 induction electromagnetic crucible furnaces with a C-shaped magnetic core (MC). The core is covered by turns of an electric coil (EC) of small volume up to ~14.56 dm3. The furnaces have MC from a set of used transformer plates with a working volume of ~ 28.5 – 30.8 dm3, a capacitor bank (CB), the number of turns w = 23 – 50 of copper or aluminum wire, voltage 380 – 390 V, frequency 50 Hz. The water-cooled EC is placed in a rubber tank and creates a horizontal electromagnetic flow with induction of ≈70 mT, which is amplified by MC and directed beyond EC into a larger working volume of ~30.7 dm3 between its poles with induction up to ≈100 mT. When placing a steel crucible in the volume, induction increases up to 125 – 150 mT and the experimental furnace EMC‑30.7‑23A with a capacity of 44 kVA allows melting 21 kg of silumin at a speed of 10 °C/min in 65 min, which is faster than in the resistance furnace СAT‑0.16 with a power of 40 kW in 2 h. With strong compression of MC plates, the noise decreases from 80 – 85 to 40 – 48 dB. To increase the furnace efficiency, it is proposed to use pole plates with a width of 155 mm, mineral wool in the thermal insulation of the crucible, tuning capacitors in CB, and EC from copper cable. For melting of high-temperature alloys, it is advisable to connect this furnace to a step-up transformer in order to increase the current density from 3.7 to the permissible 20 A/mm2, power in the EC – CB circuit, and EC induction. The authors suggest to continue research on electromagnetic furnaces made from cheap transformer scrap to determine the scope.

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Kislov, A., O. Talipov, K. Karmenov, and S. Toraigirov. "The Research of Energetic Characteristics of Induction Smelting Crucible Furnaces." Applied Mechanics and Materials 698 (December 2014): 116–23. http://dx.doi.org/10.4028/www.scientific.net/amm.698.116.

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Induction smelting crucible furnaces have the advantage of optimal management of the process, regulation of the capacity and have high technical indices. The research of electrical and energetic correlation of induction smelting crucible furnaces is necessary in order to analyze the work and elucidate the optimal condition of exploitation, to work out the methods of projection and determine the optimal constructions of magnet wires. The authors worked out the methods of calculating the energy of electromagnetic field according to the sections of the space of the induction system, to the selection and installation of magnet wires in order to meet the technological requirements in the best way and to achieve high energetic and exploitation indices when building the induction crucible furnaces. The work represents the influence and interrelation of the inductor and the charge with the magnet wire depending on geometrical correlation of the induction system.

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Левшин, Геннадий, and Gennady Levshin. "High technologies in induction melting in inductor and electro-magnetic crucible furnaces." Science intensive technologies in mechanical engineering 1, no. 3 (March 31, 2016): 12–21. http://dx.doi.org/10.12737/18075.

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Merits and demerits in high technology of a induction crucible melting of casting alloys of two types: with vertical and horizontal electromagnetic streams are considered. The comparison of basic design and operation parameters of a fusion process and furnaces themselves is carried out. General and characteristic peculiarities are revealed. The use of techniques and furnaces of both types will allow widening the field of induction fusion application.

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Bondar, O. I., Yu M. Goryslavets, and A. F. Zharkin. "INTENSIFICATION OF HEAT AND MASS TRANSFER IN INDUCTION CHANNEL FURNACES." Tekhnichna Elektrodynamika 2022, no. 3 (May 23, 2022): 49–55. http://dx.doi.org/10.15407/techned2022.03.049.

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On the basis of the formulated mathematical model the thermal state of a two-phase (two-channel) induction furnace for melting cast iron with channels of standard and new configuration (shape) taking into account thermal convection is investigated. The influence of the phase angle between the voltages supplying the furnace inductors on the overheating of the metal in the channels is determined. Practical recommendations for reducing this overheating are presented, which allows to reduce energy losses, i.e. to increase the efficiency of furnaces and increase their service life. References 10, tables 2, figures 4.

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Kinev, Evgeni, Alexei Tyapin, Vasili Panteleev, Mikhail Pervukhin, and Sergei Efimov. "Energy efficiency comparison of three-phase transverse and longitudinal field inductors." Energy Safety and Energy Economy 5 (October 2021): 23–36. http://dx.doi.org/10.18635/2071-2219-2021-5-23-36.

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The paper presents the results of energy efficiency and traction evaluation of linear induction machines for with molten aluminum recycling furnaces. Ansys Maxwell software was used for the synthesis of 3D parametric models of electromagnetic fields for a large air gap furnace. Interchangeable modules of three-phase transverse and longitudinal field inductors were used as a subsystem of a parametric model. Both inductor models include invertor low frequency power supply. Transverse and longitudinal field inductors have been designed with similarity principles. A stationary electromagnetic mode and power parameters has been modeled without taking melt hydrodynamics into account. Linear induction transverse-field machines have demonstrated higher efficiency.

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Gertsyk, S. I., and YA A. Mineev. "TECHNOLOGY FOR MAKING OF 12Х18Н10Т ALLOY IN INDUCTION-ARC FURNACES." Technology of metals, no. 5 (2021): 2–8. http://dx.doi.org/10.31044/1684-2499-2021-0-5-2-8.

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A technology for making structural cryogenic steel 12Х18Н10Т from industrial waste has been developed. For it an induction plant was used which consists of two FS-series induction-arc furnaces. Problems of furnace charge preparation were considered: the fractional composition, oxidation, content of harmful impurities and a charging way. It made possible to ensure pot resistance and to decrease the melting period. Recommendations to decrease meniscus height on the melt surface are given.

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Zhukov, Leonid, and Dmytro Petrenko. "Continuous light-guide control of melts temperature in induction furnaces." System Research in Energy 2024, no. 1 (February 16, 2024): 54–64. http://dx.doi.org/10.15407/srenergy2024.01.054.

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The article is devoted to the question of the most effective for the full use of the induction furnaces technological flexibility continuous temperature control. The aim of the work is to create a light-guide technology for continuous temperature control of the processes of induction melting, treatment and pouring of liquid metal in metallurgy of machine building. The investigations of crucible and channel, melting, holding and pouring induction furnaces from the standpoint of light-guide thermometry have been developed. Materials, designs, as well as technologies of manufacturing, mounting and safe operation of the light-guide and auxiliary devices have also been investigated. Using the results of complex studies, the base light-guide thermometry system, general and particular methods of the light-guide temperature measurements have been developed. On the base of the Huygens construction, as well as the laws of geometric and crystal optics, techniques for calculation of the optical characteristics of the light-guide and focusing devices, as well as schemes of their optical joint have been developed. These techniques increase the metrological characteristics of the light-guide thermometry. Standard construction of the secondary part of thermometry system requires classical pyrometry methods application. These methods are acceptable for continuously operated metallurgical aggregates, where stable emissivity of the light-guide operating end takes place. The secondary part of thermometry system has been modernized in order to widen application field of light-guide thermometry on periodically operated metallurgical aggregates where emissivity of light-guide immersion end randomly changes. Modernized secondary part is purposed for spectral (multicolor) pyrometry methods realization. These methods minimize influence of the instability of emissivity of light-guide immersion end on methodical errors of temperature measurements. Research and industrial exploitation, at domestic and foreign enterprises, have shown obvious metrological advantages of the light-guide thermometry technology in comparison with known solutions. Implementation of the light-guide thermometry systems on induction furnaces has high technical-economic efficiency, including by reduction the spoilage of metal products and resource costs for production. Keywords: induction furnace, continuous temperature control, light-guide thermometry, amorphous, poly- and single-crystalline materials, measurement error, Huygens construction, technical-economic efficiency.

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Whiteley, Peter. "A Historical Perspective of Aluminium Casthouse Furnace Developments." Materials Science Forum 693 (July 2011): 73–79. http://dx.doi.org/10.4028/www.scientific.net/msf.693.73.

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This paper provides an historical perspective of aluminium casthouse furnace evolution over the past 30 years or so with a view towards explaining the reasons for those innovations, and the success or otherwise of some of the changes which were tried. The paper covers electrically energized furnaces such as channel and coreless induction furnaces as well as “glo-bar” heated furnaces. It goes on to discuss fuel fired furnaces including melters of many varieties including side charged, top charged, sidewell, and multichamber designs. Additionally it includes melter/holders and conventional holding (casting furnaces). The drivers for change have been many and varied, and have included the need to cope with capacity creep, reduced specific energy consumption, improved asset utilization, greatly enhanced process intensity, reduced melt loss, improved furnace reliability, acceptance of the benefits of automation, and always the concern for improved safety in all aspects of furnace operation. Accordingly the paper covers related matters such as major changes in burner choices; furnace charging and tending; refractory type and design; furnace enlargement; forced convection stirring; dealing with difficult scraps; the demise of stationary casting furnaces, recognition of the need for improved metal cleanliness; and the challenge to deal with a wider range of difficult alloys. Additionally there has been a much greater understanding of furnace functionality by computer modelling of heat transfer as well as modelling of furnace stress design by FEA as well as some physical modelling and full scale tests to validate computer model assumptions. One of the most significant aspects of improved science has been the manner in which furnaces are operated to maximize productivity, reduce energy cost and melt loss, and by the adoption of purpose built tending vehicles. Finally the paper discusses prospects for future technological development and other aspects of improved productivity through achieving target composition first time as well as by better production planning, together with the aid of dynamic simulation for optimisation of activities.

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Sofian, Harry Octavianus. "Development of Technology Ferrous Metal Melting Furnace Ancient Times in Indonesia." KALPATARU 30, no. 2 (November 30, 2021): 141–52. http://dx.doi.org/10.24832/kpt.v30i2.863.

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Abstract. Technological knowledge of the use of metals is inseparable from human knowledge in the processing pyrotechnics of fire as a power in high temperature processes for producing objects. The fire is used for smelting and casting in melting furnaces. Metal smelting furnace is a heat production device, which is used to purify the metal, in this case iron. This paper aims to determine the development of ferrous metal smelting furnace technology in Indonesia with the library research method from the results of previous studies. Based on the results of the analysis, there are four technologies for smelting iron, namely pit kiln, bloomery furnace, blast furnace, and induction furnace. Of the four technologies, three are in use in Indonesia, namely bloomery furnace, blast furnace, and induction furnace.

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Setiawan, Hadi, Belly Yan Dewantara, and Istiyo Winarno. "ELIMINASI HARMONISA PADA INDUCTION FURNACE MENGGUNAKAN FILTER HYBRID." E-Link: Jurnal Teknik Elektro dan Informatika 19, no. 1 (May 17, 2024): 116. http://dx.doi.org/10.30587/e-link.v19i1.7219.

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Induction Furnace is equipment that is widely used in the metal or steel industry, this equipment is usually used to process metallic or non-metallic minerals in the reduction or smelting process. Induction furnaces have a frequency value in an induction furnace that can reach 2000Hz, and the DC voltage can be adjusted to reach 800VDC. By using a filter you can reduce harmonics as small as possible until the waveform is closer to sinusoidal. Research to analyze the steps for installing a hybrid filter to reduce harmonic distortion. The analysis results from the hybrid filter simulation can reduce the total harmonic distortion value with the THD value according to IEEE 152-1992.

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Golak, S., R. Przylucki, and J. Barglik. "Determination of a Mass Transfer Area during Metal Melting in a Vacuum Induction Furnace." Archives of Metallurgy and Materials 59, no. 1 (March 1, 2014): 287–92. http://dx.doi.org/10.2478/amm-2014-0047.

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Abstract In the paper, a simulation model that allows for determination of the actual surface area of inductively stirred liquid metal and the value of metal near-surface velocity during its melting is presented. Also, the effects of induction furnace working frequency on both parameters are demonstrated. The simulation was performed for copper and liquid steel that were melted in two different induction furnaces. The calculation results were also used for determination of coefficients of copper mass transfer in liquid steel and of antimony mass transfer in liquid copper during their stirring in the discussed furnace.

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Po’latov, Abror, Begali Mamadaliyev, and Humoyun Mo’minov. "Application of equivalent thermal circuits for calculation of thermal processes of induction cruel furnaces with a capacity of up to 1000 kg." E3S Web of Conferences 289 (2021): 07001. http://dx.doi.org/10.1051/e3sconf/202128907001.

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The article describes new approaches to calculating the thermal regimes of induction crucible furnaces, as well as methods for calculating them using converted thermal circuits. The principles of constructing thermal models of structural parts and molten metal of induction crucible furnaces based on converted ETS and their use for the development of optimal systems for automatic control of the metal melting process are considered. The methodology for the development of ETS and the compilation of heat balance equations for induction crucible furnaces with a capacity of up to 1000 kg is presented..

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Li, Rui, Yuanyuan Zhang, Xiaodong Chu, Lin Gan, Jia Li, Baohua Li, and Hongda Du. "Design and Numerical Study of Induction-Heating Graphitization Furnace Based on Graphene Coils." Applied Sciences 14, no. 6 (March 17, 2024): 2528. http://dx.doi.org/10.3390/app14062528.

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Induction-heating graphitization furnaces are widely used to produce high-purity graphite products due to their high heating rate, high-limit temperatures, safety, cleanliness, and precise control. However, the existing induction-heating systems based on copper coils have limited energy efficiency. This paper proposes a new induction-heating graphitization furnace based on graphene coils. Due to the excellent high-temperature resistance of the macroscopic graphene material, the coil can be placed closer to the graphite heater, which improves the electromagnetic efficiency; the coil itself does not need to pass cooling water, which reduces the heat loss of the furnace and ultimately results in a higher energy efficiency of the induction furnace. In this paper, a numerical model of the induction-heating process is established and verified, the temperature-field and electromagnetic-field distributions of the heating process are analyzed by using the model, and the energy balance calculations are performed for the original furnace and the new furnace. Through a comparison, it was found that the new furnace possesses an electromagnetic efficiency of 84.87% and a thermal efficiency of 20.82%, and it can reduce the energy consumption by 33.34%, compared with the original furnace. In addition, the influence of the coil parameters on the performance of the induction furnace is discussed. By changing the coil conductivity, the induction furnace can achieve an energy efficiency of 17.76%–18.11%. This study provides new ideas for the application of macroscopic graphene materials in high-temperature induction heating.

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Rovin, S. L., L. E. Rovin, and I. S. Nasevich. "Application of rotary furnaces for melting ferrous alloys." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 1 (April 7, 2020): 9–13. http://dx.doi.org/10.21122/1683-6065-2020-1-9-13.

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The article presents the experience of using rotary tilting furnaces (RTF) for melting ferrous alloys, as well as for recycling of dispersed iron-containing wastes (chips, dross, sludge) to obtain high – quality casting alloys directly in the RTF or when implementing the duplex process: RTF-induction furnace or RTF-arc furnace. The main technical characteristics of RTF that developed by Belarusian scientists and designers are described. The most promising areas of application of RTF were shown. An approximate calculation of the economic effect associated with the use of RTF in the production of steel and cast iron castings is performed.

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Dolgikh, I. Yu, and M. G. Markov. "Development of a condition monitoring system for the refractory lining of induction crucible steelmaking furnaces." Vestnik IGEU, no. 5 (2019): 58–66. http://dx.doi.org/10.17588/2072-2672.2019.5.058-066.

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A wide range of technological advantages of induction crucible melting furnaces makes their use in various sectors of metallurgical production relevant. However, hard operation conditions of the refractory lining of such furnaces makes it necessary to constantly monitor its condition, with the aim to extend the crucible life and prevent emergencies. Moreover, traditional methods based on the use of a bottom electrode and indication of current leakage to earth do not provide a continuous display of the lining destruction degree and make it possible to register only a critical level that requires an emergency shutdown and emptying of the furnace. This circumstance makes it necessary to develop and implement specialized electrical systems with a monitoring and control system that ensures the determination and visualization of the lining wear level and, if necessary, makes an emergency shutdown of the equipment from the power source. The developed complex is based on a microprocessor system that continuously measures the temperature at the control points at the boundary between the bottom and crucible base layers and compares the obtained values with the settings, which are determined previously on a two-dimensional axisymmetric model of the designed furnace by solving the stationary heat conduction equation at various levels of lining failure. We have developed the structure, scheme, and program for a microprocessor-based monitoring and emergency shutdown system of an induction furnace, as well as a mathematical model of the control object, which allows determining the temperature settings. The reliability of the results is confirmed by the applicability of the models to real objects, and is verified by debugging the microprocessor part in the MPLab-Sim and Proteus programs. The obtained results can be used in the practical implementation of the monitoring system and emergency shutdown of induction melting furnaces, which allows increasing the safety of their operation and extending the lining life due to timely repair.

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Karwiński, A., W. Lesniewski, P. Wieliczko, and M. Małysza. "Casting of Titanium Alloys in Centrifugal Induction Furnaces." Archives of Metallurgy and Materials 59, no. 1 (March 1, 2014): 403–6. http://dx.doi.org/10.2478/amm-2014-0068.

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Abstract This paper discusses technical problems related with casting of titanium alloys in centrifugal vacuum furnaces. The potentials of an analysis of the centrifugal casting process carried out in the Flow3D software CFD (Computational Fluid Dynamics) were presented. Simulations were carried out on a model set, which enables casting of two connecting rods for an I.C. engine. Changes in the mould filling process were examined for the three selected spinning velocities of the casting arm. The ranges of the metal flow velocity in mould were calculated as well as metal pressure in mould after reaching a predetermined spinning velocity. The results and the adopted mould geometry enabled determination of the magnitude of stress occurring in mould at the time of filling it with liquid titanium alloy. The paper presents a methodology for testing of the ceramic material strength using a four-point loading arrangement. The strength of the ceramic material was determined on samples heated at different temperatures. The obtained results enabled a thesis to be formulated that for pouring of moulds in a centrifugal vacuum furnace, the layered foundry ceramic moulds can be safely used, and the use of moulds that will provide the directional solidification of metal should be possible as well.

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Lazarenkov, A. M., and I. A. Ivanov. "Study of working conditions in aluminum casting shops worksites." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 1 (March 26, 2021): 149–54. http://dx.doi.org/10.21122/1683-6065-2021-1-149-154.

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The results of the study of working conditions in aluminum casting shops worksites are presented. The results of these studies showed that in worksites there are exceedance of the permissible limits for noise, vibration, the content of harmful substances in the working environment, intensity of infrared (thermal) radiation and air temperature. There is effect of electromagnetic radiation on the workers during the service of induction furnaces. In addition, the main harmful production factors include the severity of work and the intensity of the labor process. The efficiency of the protective screens of the IAT-6 induction crucible furnace was evaluated.

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Uskov, Ilya Andreyevich, Evgeny Leonidovich Shvidkiy, and Vasily Eduardovich Frizen. "Studies of Electromagnetic Stirrer Modes." Applied Mechanics and Materials 792 (September 2015): 457–61. http://dx.doi.org/10.4028/www.scientific.net/amm.792.457.

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The article presents results of studies of electromagnetic modes of side stirrer composed of multi-melting unit, based on the induction crucible furnace. Using induction crucible furnaces as highly efficient smelting unit in combination with an electromagnetic stirrer and heat control means electrodynamic effect on the molten metal at all stages of melting. The aim of this approach is to reduce the time of melting and improve the quality characteristics of the metal. This article describes the design of basic units, calculation of energy parameters and the study of stirrer modes when powered by a frequency converter.

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Saggu, Tejinder Singh, and Lakhwinder Singh. "Power Quality Improvement in Induction Furnace by Harmonic Reduction Using Dynamic Voltage Restorer." International Journal of Emerging Electric Power Systems 17, no. 3 (June 1, 2016): 277–85. http://dx.doi.org/10.1515/ijeeps-2015-0189.

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Abstract Induction furnaces are used in wide quantity under different capacities for annual production of around 25 million tons of iron and steel in India. It plays a vital role in various manufacturing processes around the world for melting different types of metal scraps i. e. Copper, Cast Iron, Aluminium, Steel, Brass, Bronze, Silicon, Gold, Silver etc. which are further used in many other industrial applications. The induction furnace causes a huge disturbance to the utility and nearby consumers during its operation due to its non-linear characteristics. This is a serious phenomenon responsible for power quality degradation in the power system. This paper presents methodology to improve the power quality degradation caused by induction furnace using Dynamic Voltage Restorer (DVR) which is a type of custom power device. The real time data has been taken from an industry employing induction furnace for production of ingots from scrap material. The experimental readings are measured using power quality analyser equipment. The simulation of whole plant is done by analysing this same data and the simulation results are compared with actual onsite results. Then, solution methodology using DVR is presented which revealed that the implementation of DVR is an effective solution for voltage sag mitigation and harmonics improvement in induction furnace.

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Ghojel, J. I. "Thermal analysis of twin-channel induction furnaces." Metallurgical and Materials Transactions B 34, no. 5 (October 2003): 679–84. http://dx.doi.org/10.1007/s11663-003-0039-4.

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Smalcerz, Albert, Bartosz Wecki, Leszek Blacha, Jerzy Labaj, Maciej Jodkowski, and Adrian Smagor. "Kinetics of Zinc Evaporation from Aluminium Alloys Melted Using VIM and ISM Technologies." Materials 14, no. 21 (November 4, 2021): 6641. http://dx.doi.org/10.3390/ma14216641.

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Using a vacuum during the smelting and refining of alloys removes dissolved gasses, as well as impurities with high vapour pressure. When smelting is carried out in vacuum induction furnaces, the intensification of the discussed processes is achieved by intensive mixing of the bath, as well as an enhanced mass exchange surface (liquid metal surface) due to the formation of a meniscus. This is due to the electromagnetic field applied to the liquid metal. This study reports the removal of zinc from the Al-Zn alloy containing 6.3 wt.%. Zn. The experiments were carried out with the use of two types of metallurgical devices: the VIM and ISM furnaces. For the experiments carried out in the crucible induction furnace, reduction in the operating pressure in the furnace from 1000 Pa to 10 Pa, together with the increase in temperature from 953 K to 1103 K, is accompanied by a decrease in zinc content in the alloy from 6 to 96%, compared with the initial value. Simultaneously, the overall mass transfer coefficient kZn increases from 5.15 × 10−6 to −1.49 × 10−4 ms−1. For the experiments carried out in the furnace with a cold crucible (T = 953 K), a reduction in the operating pressure in the furnace from 1000 Pa to 10 Pa resulted in a decrease in zinc content in the alloy from 18 to 80%, compared with the initial value. For comparison, the experiments carried out in the crucible induction furnace at 953 K showed a reduction in zinc content in the alloy from 6 to 50%, which means that more intense zinc evaporation is seen in the furnace with a cold crucible. Comparison of ISM and VIM technologies in the removal efficiency of the Al-Zn alloy indicates a higher removal efficiency using the first technology, which, using the same conditions, achieves 80% of the removal efficiency of the component.

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Smalcerz, A., B. Oleksiak, and G. Siwiec. "The Influence A Crucible Arrangement On The Electrical Efficiency Of The Cold Crucible Induction Furnace." Archives of Metallurgy and Materials 60, no. 3 (September 1, 2015): 1711–16. http://dx.doi.org/10.1515/amm-2015-0295.

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AbstractA big interest in application of cold crucible furnace (CCF) for industrial, particularly metallurgical, processes has been observed in recent years. They are mainly utilised for melting of metal, glass and other materials. Analyses of processes that occur in such devices are performed; however, computer modelling is rarely applied. As a precise determination of the electromagnetic field distribution is essential for a proper analysis of processes in furnaces with cold crucibles, a complex 3D model development is necessary. In the paper, effects of a crucible design and current frequency on the efficiency of the induction furnace with cold crucible are presented. Numerical calculations were performed with the use of the Flux 3D professional software.

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Stanchev, Valentin Georgiev. "CONSULTING EXPERT SYSTEM FOR CORELESS INDUCTION FURNACES CONTROL." IFAC Proceedings Volumes 39, no. 19 (2006): 171–76. http://dx.doi.org/10.3182/20061002-4-bg-4905.00029.

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Umbrashko, A., E. Baake, B. Nacke, and A. Jakovics. "Modeling of the turbulent flow in induction furnaces." Metallurgical and Materials Transactions B 37, no. 5 (October 2006): 831–38. http://dx.doi.org/10.1007/s11663-006-0065-0.

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36

BermÃºdez, A., D. GÃ³mez, M. C. MuÃ±iz, and P. Salgado. "Electromagnetic and thermal modelling of axisymmetric induction furnaces." PAMM 7, no. 1 (December 2007): 2150017–18. http://dx.doi.org/10.1002/pamm.200700466.

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37

Rovin, S. L., L. E. Rovin, A. S. Kalinichenko, L. P. Dolgy, and V. A. Sheinert. "CREATION OF OWN RAW-MATERIAL BASE FOR FOUNDRY PRODUCTION ON MACHINE-BUILDING ENTERPRISES." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 2 (July 7, 2018): 29–36. http://dx.doi.org/10.21122/1683-6065-2018-2-29-36.

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The article is devoted to the problem of processing dispersed metal wastes, generated at machine-building enterprises. The proposed solution of the problem is recycling in rotary tilting furnaces (RTF) with the production of high-quality charge materials (charge ingots) or foundry alloys directly at the enterprises where these wastes are formed. The results of experimental meltings of gray iron in induction crucible furnace with the replacement of traditional charge materials with ingots, obtained from chips, scale, sludge, etc. in the RTF are presented.

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Buliński, P., J. Smołka, S. Golak, R. Przyłucki, L. Blacha, R. Białecki, M. Palacz, and G. Siwiec. "Effect Of Turbulence Modelling In Numerical Analysis Of Melting Process In An Induction Furnace." Archives of Metallurgy and Materials 60, no. 3 (September 1, 2015): 1575–80. http://dx.doi.org/10.1515/amm-2015-0275.

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AbstractIn this paper, the velocity field and turbulence effects that occur inside a crucible of a typical induction furnace were investigated. In the first part of this work, a free surface shape of the liquid metal was measured in a ceramic crucible. Then a numerical model of aluminium melting process was developed. It took into account coupling of electromagnetic and thermofluid fields that was performed using commercial codes. In the next step, the sensitivity analysis of turbulence modelling in the liquid domain was performed. The obtained numerical results were compared with the measurement data. The performed analysis can be treated as a preliminary approach for more complex mathematical modelling for the melting process optimisation in crucible induction furnaces of different types.

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Blacha, Leszek, Albert Smalcerz, Bartosz Wecki, Jerzy Labaj, Debela Geneti Desisa, and Maciej Jodkowski. "Comparative Analysis of Lead Removal from Liquid Copper by ICF and CCF Refining Technologies." Materials 15, no. 19 (October 10, 2022): 7024. http://dx.doi.org/10.3390/ma15197024.

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Innovative technologies require the use of materials that meet increasingly high requirements; one such requirement is the purity of metals. In the case of copper, this translates into a parameter related to electrical conductivity. Traditional metal refining technologies have some limitations that can be eliminated through the use of modern melting aggregates. Such solutions include vacuum induction furnaces, comprising an induction furnace with a cold crucible. As part of this work, the possibilities of refining copper and lead alloys were investigated. In addition, the research was carried out with the use of two induction vacuum aggregates, allowing us to compare their effectiveness. The tests were carried out in a pressure range of 10–1000 Pa and at temperatures of 1273–1473 K. The results obtained made it possible to determine the mass transport coefficient of lead from an alloy with copper, and to determine the share of resistance in individual stages of the process. For experiments conducted inside an induction crucible furnace, lowering the working pressure inside the furnace chamber from 1000 to 10 Pa while increasing the temperature from 1323 to 1473 K was accompanied by a drop in the lead concentration inside the alloy of 69 to 96%, compared to its initial mass. For experiments conducted inside a cold crucible furnace, approximate values of lead removal appeared for lower temperatures (1273 to 1323 K), confirming that the analyzed process happens faster in this aggregate.

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Bershitskii, I. M., S. A. Kononov, R. S. Konshin, A. V. Malykh, and A. V. Protasov. "Modernization of existing furnaces of special electrometallurgy is one of the ways of import substitution." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 80, no. 2 (March 29, 2024): 9–14. http://dx.doi.org/10.32339/0135-5910-2024-2-9-14.

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Steel smelting in vacuum arc and induction furnaces is the basis of modern special electrometallurgy. Despite the existing scientific and technical groundwork and the domestic priority of the main developments, a significant part of the existing installations was purchased by import from Western firms. The rapid growth of requirements for the quality of critical metal products requires a significant improvement in the parameters of vacuum melting furnaces. In view of the destruction of the existing ties in modern conditions, the issue of modernizing the existing equipment by domestic specialists is acute. Particular attention should be paid to improving the efficiency of the vacuum system and process automation of the technological process with organic compatibility of new elements with existing equipment. The deep modernisation of imported vacuum induction furnaces ALD VIM IC 40 and ALD VIM VIDP 400 was carried out by LLC TEK-98, JSC SMK, JSC ChMP.

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M. Dewi Manikta Puspitasari, Miftakhul Maulidina, Agus Suwardono, Elsanda Merita Indrawati, and Kartika Rahayu Tri P. S. "Pelatihan Perancangan dan Pengaplikasian Alat INTENSOR." ABDIKAN: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi 2, no. 1 (February 28, 2023): 123–27. http://dx.doi.org/10.55123/abdikan.v2i1.1658.

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Technological developments have a role in the competition for metal processing in the home industry, namely the development of metal heating devices. However, the home industry needs to consider environmentally friendly metal heaters. One of the environmentally friendly metal heaters is an induction heater. Induction heater has a metal heating technique by utilizing electromagnetic induction which is more efficient than using a conventional metal heating furnace. Induction heaters have advantages in terms of easier use, efficient in terms of energy, time and temperature regulation. Induction heating is a metal heating technique by utilizing electromagnetic induction from high frequency AC waves, which is more efficient than using conventional metal heating furnaces. This problem is the basis for holding training on the design and application of the INTENSOR tool. This community service activity has had quite a good impact in: 1) increasing the knowledge and skills of metal processing business actors in designing INTENSOR tools; 2) increase the knowledge of metal processing business actors in making and applying INTENSOR tools. Community service activities are carried out for 6 months and are intended for metal processing business actors.

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42

Levert, D. "Second generation rotary furnaces, an even more viable alternative to cupola and electric induction furnaces." Revue de Métallurgie 98, no. 10 (October 2001): 833–37. http://dx.doi.org/10.1051/metal:2001131.

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Vyazankin, Vitaliy Valer'evich, Victor Andreevich Mamontov, Sergey Vladimirovich Vinogradov, and Semen Vital'evich Vyazankin. "Calculation and design of the heating furnace for straightening experimental samples of ship shafts." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2023, no. 4 (November 27, 2023): 35–39. http://dx.doi.org/10.24143/2073-1574-2023-4-35-39.

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During operation the shafts of responsible purpose, which have received a curvature of the longitudinal axis and are not allowed for further operation, are subjected to correction with heating. The following heating methods are considered: with the use of a gas burner, induction heating, as well as tubular resistance furnaces. The use of a gas burner causes difficulties in the heating process controlling and the appearance of defects due to uneven heating afterwards. The diagram of the device for heating the shaft with a gas burner is illustrated. The scheme of induction heating of the shaft section is considered. During induction heating, it is necessary to use special equipment. It is proposed to use a tubular resistance furnace in an experimental study. The requirements for the material of the heating element are considered. A wire made of chromium-nickel alloy nichrome H20N80 for the heating element was selected. The layout of the tubular resistance furnace was made and materials were selected. The design of a resistance furnace for insulated windings is presented. Calculations of the length, diameter and number of turns of the heating element are performed. After manufacturing, a test heating of the sample was carried out. It is concluded that the furnace power was sufficient to warm up the sample to the required temperature of 650 °C for three hours.

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Goryslavets, Yu M., O. I. Glukhenkyi, and V. I. Zaloznyi. "INFLUENCE OF ELECTROPHYSICAL PARAMETERS OF MATERIALS ON ELECTRICAL LOSSES IN METAL FRAMES OF INDUCTION CHANNEL FURNACES." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2023, no. 66 (December 4, 2023): 90–95. http://dx.doi.org/10.15407/publishing2023.66.090.

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On the basis of mathematical modelling of electromagnetic processes, electrical losses in the metal frames of the two-inductor induction channel furnace in a wide range of specific electrical conductivity of the non-magnetic material of the frames were determined. Research was conducted for two options for sectioning the lower frame of the furnace (vertical and horizontal) and two values of the phase angle between the voltages on the inductors (0 and 180 electrical degrees). For these cases, losses in furnace frames made of ferromagnetic material (construction carbon steel and magnetic stainless steel) were also calculated. Recommendations are presented on the selection of the frame material, the sectioning option and the phase angle between the voltages, which ensure minimal electrical losses. Ref. 13, fig. 4. Key words: induction channel furnace, metal frames, mathematical modelling, electrical losses.

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Zamora, I., I. Albizu, A. J. Mazón, K. J. Sagastabeitia, and E. Fernandez. "Harmonic Distortion in an Steel Plant with Induction Furnaces." Renewable Energy and Power Quality Journal 1, no. 01 (April 2003): 461–67. http://dx.doi.org/10.24084/repqj01.401.

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Kukartsev, V. A., V. S. Tynchenko, V. V. Kukartsev, E. A. Chzhan, and N. A. Shepeta. "Steel smelting in induction crucible furnaces with industrial frequency." IOP Conference Series: Earth and Environmental Science 194, no. 4 (November 15, 2018): 042024. http://dx.doi.org/10.1088/1755-1315/194/4/042024.

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Val'dman, O. A., A. S. Kalugin, and S. L. Podshivalov. "Efficiency of raising the lining endurance in induction furnaces." Refractories 35, no. 6 (June 1994): 199–201. http://dx.doi.org/10.1007/bf02307158.

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Futaš, Peter, Alena Pribulová, and Marcela Pokusova. "Possibilities Reducing of Energy Consumption by Cast Iron Production in Foundry." Materials Science Forum 998 (June 2020): 36–41. http://dx.doi.org/10.4028/www.scientific.net/msf.998.36.

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Modern metal melting includes of cast iron production in different types furnaces with specific characteristics. Furnaces usually adopted are cupola and induction furnaces. Casting cast iron is a manufacturing process characterized by its energy-intensive nature (ie, the use of large amounts of energy per unit of product for main activities) and a long tradition. An example of the energy balance in a foundry is the design of procedures to reduce energy consumption. The most important is the consumption of energy in the production of hot metals (52%), therefore reducing the cost of preparing hot metal is especially important by reducing the energy consumption of metal melting. The most important energy cost practices are the consumption of hot metal to produce 1mt of high quality castings (often 1700 kg) and reduce the energy consumption of hot metal production that varies over a wide range (from 500 to 1300 kWh/mt). Although scientific and technological aspects are now well established, new studies seem to be needed to describe "foundry of the future", where energy and material efficiency is of great importance to ensure competitiveness alongside environmental protection. The paper presents specific procedures for reducing both economically important indicators in cupola and electric induction furnaces.

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Shcherba, M. А. "NUMERICAL SIMULATION OF ELECTROMAGNETIC AND THERMAL FIELDS IN INDUCTION CHANNEL FURNACES WITH DEFECTS OF LINING." Tekhnichna Elektrodynamika 2018, no. 4 (May 15, 2018): 33–36. http://dx.doi.org/10.15407/techned2018.04.033.

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Zavertkin, A. S. "Effect of heat treatment of quartzite on the mechanism of destruction of the lining of induction furnaces." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 1 (April 26, 2019): 49–53. http://dx.doi.org/10.17073/1683-4518-2019-1-49-53.

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The mechanism of wear of quartzite lining of induction crucible furnaces during the smelting of iron and steel is presented. It has been established that the main cause of lining wear is a decrease in its strength caused by the transition of the tridimite joint into cristobalite, which is much easier to wash off the walls of the crucible with moving metal and slag. The second important factor of wear is the choice of quartzite raw materials, its material and granulometric compositions, the firing mode and the technology of melting during operation of the furnace. Silicon recovery from silica of carbonization lining by carburizer and cast iron, which is part of, is a secondary factor of crucible lining wear. Ill. 4. Ref. 5. Tab. 1.

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Journal articles on the topic 'Induction furnaces'

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