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Tytuł:
Badanie procesu odwęglania ciekłej stali w kadzi z zastosowaniem przedmuchiwania argonem i mieszaniną tlenu i argonu
Investigation of liquid steel decarburisation process in a ladle using blowing with argon and a mixture of oxygen and argon
Autorzy:
Zdonek, B.
Szypuła, I.
Blacha, L.
Łabaj, J.
Pieprzyca, J.
Moycho, J.
Bielański, L.
Rzetelski, A.
Binek, S.
Dudkiewicz, P.
Zarzycki, D.
Regulski, P.
Kutera, W.
Powiązania:
https://bibliotekanauki.pl/articles/181585.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Metalurgii Żelaza im. Stanisława Staszica
Tematy:
kadź
odwęglanie
ciekła stal
tlen
argon
aktywność chemiczna
ladle
decarburization
liquid steel
oxygen
chemical activity
Opis:
Przedstawiono koncepcję i instalacje doświadczalne do odwęglania stali w kadzi o dużej pojemności (50 t) z przedmuchiwaniem kąpieli argonem przez hybrydową kształtkę gazoprzepuszczalną w dnie oraz w kadzi o małej pojemności (1 t) z wdmuchiwaniem do ciekłego metalu mieszaniny tlen - argon lancą od góry. Przeprowadzone na tych instalacjach próby doświadczalne wykazały dla pierwszej instalacji zmniejszenie zawartości węgla poniżej 0,02% i fosforu poniżej 0,003%, a w drugiej instalacji, możliwość elastycznego odwęglania kąpieli do zawartości węgla mniejszej niż 0,03%. Przedstawiono technologiczne scenariusze zastosowania zbadanych sposobów odwęglania stali w kadzi.
The article presents the concept and experimental installations for decarburisation of steel in a large capacity ladle (50 t) with blowing the bath with argon through a gas-permeable hybrid fitting and in a small capacity ladle (1 t) with injection of an oxygen – argon mixture with a lance into liquid metal from above. For the first installation, the experimental tests showed a reduction in the carbon content below 0.02% and phosphorus below 0.003%, and in the second installation – the possibility of flexible decarburisation of the bath to a carbon content of less than 0.03%. Technological scenarios of the use of the investigated decarburisation methods of steel in a ladle are presented in the article.
Źródło:
Prace Instytutu Metalurgii Żelaza; 2017, T. 69, nr 4, 4; 34-43
0137-9941
Pojawia się w:
Prace Instytutu Metalurgii Żelaza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations of Dual Plug Argon Blowing for Efficient Mixing at Ladle Furnace Station
Autorzy:
Warzecha, Marek
Hutny, A.
Warzecha, P.
Kutyła, Z.
Merder, T.
Powiązania:
https://bibliotekanauki.pl/articles/2049728.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
steelmaking
ladle furnace
numerical modeling
physical modeling
Opis:
The article presents the results of model research concerning the change of technology of argon blowing into liquid steel at the ladle furnace, using the dual plug system. The results of numerical simulations were verified with experimental data carried out on the water model device. The verified model was used to perform numerical simulations to predict the impact of using a new gas injection technology - with different flow rates - on the time to achieve the assumed degree of metal chemical homogenization after alloy addition. Simulation results show that argon blowing metal bath in dual plug mode can effectively reduce mixing time compared to conventional technology with the same gas flow rates. Generally, the use of the dual plug system is beneficial for reducing the bath mixing time, however, the assumed optimal proportion of gas blown through individual plug should be followed. Finally, numerical predictions were used to perform experimental melt under industrial conditions. Industrial verification has clearly confirmed the validity of numerical modeling and showed that also in industrial conditions, a shorter time of chemical homogenization was obtained for the dual plug system.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 2; 561-572
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of Relevant Work Parameters of Ladle Furnace While Melting the High Ductility Steel and High-Carbon Steel
Autorzy:
Warzecha, M.
Garncarek, S.
Merder, T.
Skuza, Z.
Powiązania:
https://bibliotekanauki.pl/articles/356374.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ladle furnace
steel grade
high-carbon steels
high ductility steels
Opis:
In the present paper, secondary metallurgical treatment in ladle furnace during smelting the high carbon steel and steel with improved ductility for cold-deforming, under industrial conditions were analyzed. Common features of these steels are high requirements/strict standards imposed for their metallurgical purity; however they are especially exorbitant for improved ductility steels. In addition, it is widely used to specify alloying additives having significant weights- such as carbon and manganese - and explicitly restricted content of nitrogen requiring metal bath cover prior nitriding.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 1; 275-278
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Optimization Parameters on the Efficiency of Aluminium Melt Refining by using Physical Modelling
Autorzy:
Walek, Josef
Michalek, Karel
Tkadlečková, Markéta
Powiązania:
https://bibliotekanauki.pl/articles/2174623.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
physical modelling
refining ladle
blowing of inert gas
degassing of the melt
impeller
modelowanie fizyczne
kadź rafinacyjna
wdmuchiwanie gazu obojętnego
odgazowanie stopu
wirnik
Opis:
The article describes the influence of optimization parameters on the efficiency of aluminium melt refining by using physical modelling. The blowing of refining gas, through a rotating impeller into the ladle is a widely used operating technology to reduce the content of impurities in molten aluminium, e.g. hydrogen. The efficiency of this refining process depends on the creation of fine bubbles with a high interphase surface, wide-spread distribution, the residence time of its effect in the melt, and mostly on the wide-spread dispersion of bubbles in the whole volume of the refining ladle and with the long period of their effect in the melt. For physical modelling, a plexiglass model on a scale of 1:1 is used for the operating ladle. Part of the physical model is a hollow shaft used for gas supply equipped with an impeller and also two baffles. The basis of physical modelling consists in the targeted utilization of the similarities of the processes that take place within the actual device and its model. The degassing process of aluminium melt by blowing inert gas is simulated in physical modelling by a decrease of dissolved oxygen in the model liquid (water).
Źródło:
Archives of Foundry Engineering; 2022, 22, 3; 60--66
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement the Thermal Profile of Steelmaking Ladle with Subsequent Evaluation the Reasons of Lining Damage
Autorzy:
Vlček, J.
Jančar, D.
Burda, J.
Klárová, M.
Velička, M.
Machovčák, P.
Powiązania:
https://bibliotekanauki.pl/articles/354815.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ladle
refractory lining
temperature
enthalpy
ladle lifetime
Opis:
Based on the operational measurement, of which content was to determine ladle thermal profile, there were analysed causes of possible damage of lining in steel ladles by steel breakout through the ladle shell. There exists connection between thermal state of ladle lining during the operation and its lifetime. There were reached to the conclusion that the cause of failure in the lining of ladle is except for high temperature of bath, also wide interval of temperature change during the tap operation, in consequence with possible insufficient pre-heating of ladle, discontinuous operation of aggregate and damage of insulating lining layer, respectively deformation of ladles shell.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 1; 279-282
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Multihole Ladle Shroud Construction on the Liquid Steel Flow in the One-strand Tundish during CSC Process
Autorzy:
Suchan, Hanna
Cwudziński, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2134116.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
one-strand tundish
ladle shroud
numerical simulation
hydrodynamic conditions
continuous casting process
Opis:
The tundish prevents unsteady flow affecting on the steel cleanness and temperature. The presented article offers a new design of a ladle shroud (LS) with three holes placed in a special dome (separating the steel flow) steeped in a metal bath. Various options of the LS construction were analysed, as well as its positioning in the tundish in relation to its longitudinal axis. The conducted numerical simulations enabled to assess the impact of the designed ladle shroud on the flow of liquid steel through the tundish. The results showed that the best option is to use the LS with two larger holes and one smaller which activates the flow structure and reduces the rate of the liquid steel velocity in the tundish, limiting the flow turbulence.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 3; 1151--1160
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Analysis of the Influence of the Modification of the Ladle Shroud on Fluid Flow Behavior in a One-strand Tundish during Continuous Steel Casting
Autorzy:
Suchan, Hanna
Cwudziński, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2056031.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
continuous casting
tundish
ladle shroud
numerical simulations
hydrodynamic conditions
odlewanie ciągłe
osłona kadzi
symulacje numeryczne
warunki hydrodynamiczne
Opis:
A tundish is a device from which liquid steel is pour into a mold. Therefore tundish hydrodynamic conditions have a significant impact on solidification during continuous steel casting (CSC) process. Modification of ladle shroud workspace, allows for the modification of liquid steel movement in the tundish. In the following work, numerical simulations were performed which allowed the impact of the modification of the ladle shroud workspace on the liquid steel flow structure in a one-strand tundish to be determined. In order to assess the impact of the modification of the ladle shroud on the behavior of the liquid steel in the tundish, simulations were performed, on the basis of which the percentage share of stagnant, ideal mixing and plug flow zones were determined. In addition, the mixing parameters were determined, allowing the estimation of casting duration during sequential casting. The flow fields of liquid steel for each modification of the ladle shroud were performed. The average velocity of liquid steel flowing through the tundish, the Reynolds number and turbulent intensity were also described. The obtained results showed, among others, that the application of three cylinders with a diameter of 0.041 m into the ladle shroud with a diameter of 0.11 m increases the share of active flow in the tundish in relation to the tundish with Conventional Ladle Shroud. At the same time, applying a ladle shroud with a diameter of 0.11 m during casting is the most favorable in relation to the hydrodynamics of the tundish.
Źródło:
Journal of Casting & Materials Engineering; 2021, 5, 4; 75--83
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Parameters of Argon Purging Process Through Ladle on the Phenomena Occuring in the Area of Phase Distributions: Liquid Steal-Slag
Autorzy:
Pieprzyca, J.
Merder, T.
Saternus, M.
Gryc, K.
Socha, L.
Powiązania:
https://bibliotekanauki.pl/articles/356927.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
steelmaking
ladle
slag
physical modelling
Opis:
Purging the liquid steel with inert gases is a commonly used treatment in secondary metallurgy. The main purposes for which this method is used are: homogenization of liquid steel in the entire volume of the ladle, improvement of mixing conditions, acceleration of the absorption process of alloy additives and refining of liquid steel from non-metallic inclusions. The basic processing parameters of this treatment are: gas flow rate and the level of gas dispersion in liquid steel. The level of gas dispersion depends on the design and location of the porous plug in the ladle. Therefore, these parameters have a significant impact on the phenomena occurring in the contact zone of liquid steel with slag. Their improper selection may cause secondary contamination of the bath with exogenous inclusions from the slag, or air atmosphere due to discontinuity of the slag and exposure of the excessive surface of the liquid steel free surface. The article presents the results of modelling research of the effect of liquid steel purging with inert gases on phenomena occurring in this zone. The research was carried out using the physical (water) model of steel ladle. As a modelling liquid representing slag, paraffin oil was used, taking into account the conditions of similarity with particular reference to the kinematic viscosity. The results of the conducted research were presented in the form of visualization of phenomena occurring on the surface of the model liquid free surface in the form of photographs. The work is a part of a bigger study concerning modelling of ladle processes.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 653-658
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cement bound mixtures with metallurgical slags for road constructions: mix design and mechanical characterization
Ograniczenia mieszanin cementu i żużli metalurgicznych do budownictwa drogowego – charakterystyka właściwości mechanicznych
Autorzy:
Pasetto, M.
Baldo, N.
Powiązania:
https://bibliotekanauki.pl/articles/318512.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
steel slag
foundry sand
ladle furnace slag
cement bound mixtures
road construction
żużle metalurgiczne
żużel z odlewnictwa
piasek odlewniczy
mieszanina cementu
konstrukcje drogowe
Opis:
Environmental, economical and technical problems have led to increasing attention towards the recycling of waste materials in the construction of road infrastructure. This paper reports the results of a study carried out at the Experimental Road Laboratory of the University of Padua, aimed at designing cement bound mixtures for road construction, characterized by a stone matrix made exclusively with electric arc furnace steel slag, waste foundry sand and ladle furnace slag, used in different proportions. The physical-geotechnical properties of the metallurgical slags have been evaluated by means of the most pertinent laboratory procedures of the road technical sector. Cement bound mixtures, characterized by five different proportions of artificial aggre¬gates, have been designed in terms of Proctor, compression and indirect tensile strength tests. The mechanical characterization of the hydraulic mixes has been completed with the elastic modulus evaluation, through ultrasonic tests. The excellent results (compression and indirect tensile strength at 7 days up to 7.23 MPa and 0.92 MPa respectively, depending on the mixture type), have met the main Italian Contract Specifications, demonstrating the possibility to successfully reuse different types of metallurgical slags, in the complete substitution of the natural aggregates, for the development of cement bound mixtures designed for road construction.
Ograniczenia mieszanin cementu i żużli metalurgicznych do budownictwa drogowego – charakterystyka właściwości mechanicznych Problemy środowiskowe, ekonomiczne i techniczne doprowadziły do wzrostu zainteresowania recyklingiem materiałów odpadowych w celu konstrukcji infrastruktury drogowej. Referat przedstawia wyniki badań przeprowadzonych w Drogowym Laboratorium Eksperymentalnym Uniwersytetu w Padwie, które zajmuje się projektowaniem mieszanki cementu do budowy dróg charakteryzującej się macierzą skalną wykonaną wyłącznie z żużla z pieca łukowego, piasku formierskiego oraz żużla kadziowego użytych w różnych proporcjach. Fizyczno-geotechniczne właściwości metalurgicznych żużli zostały określone dzięki najbardziej stosownym procedurom laboratoryjnym technicznego sektora drogowego. Zaprojektowano charakteryzujące się pięcioma różnymi proporcjami sztucznych kruszyw mieszanki oraz poddano je testom na sprężanie oraz pośrednim testom na wytrzymałość na rozciąganie. Charakterystyka mechaniczna mieszanek hydraulicznych została uzupełniona o określenie współczynnika sprężystości wzdłużnej poprzez testy ultradźwiękowe. Znakomite wyniki (sprężania i wytrzymałość na rozciąganie w siódmym dniu wynosiły odpowiednio 7,23 MPa i 0,92 MPa w zależności od rodzaju mieszanki) spełniły wymogi prezentując jednocześnie możliwość pomyślnego ponownego użycia różnych rodzajów żużli metalurgicznych, będących zamiennikami naturalnych kruszyw, w celu rozwoju mieszanek do konstrukcji dróg.
Źródło:
Inżynieria Mineralna; 2013, R. 14, nr 2, 2; 15-20
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical Modelling of Degassing Process by Blowing of Inert Gas
Autorzy:
Michalek, K.
Tkadlečková, M.
Socha, L.
Gryc, K.
Saternus, M.
Pieprzyca, J.
Merder, T.
Powiązania:
https://bibliotekanauki.pl/articles/351001.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
physical modelling
refining ladle
inert gas blowing
degassing process
impeller
Opis:
This paper deals with the possibilities of using physical modelling to study the degassing of metal melt during its treatment in the refining ladle. The method of inert gas blowing, so-called refining gas, presents the most common operational technology for the elimination of impurities from molten metal, e.g. for decreasing or removing the hydrogen content from liquid aluminium. This refining process presents the system of gas-liquid and its efficiency depends on the creation of fine bubbles with a high interphase surface, uniform distribution, long period of its effect in the melt, and mostly on the uniform arrangement of bubbles into the whole volume of the refining ladle. Physical modelling represents the basic method of modelling and it makes it possible to obtain information about the course of refining processes. On the basis of obtained results, it is possible to predict the behaviour of the real system during different changes in the process. The experimental part focuses on the evaluation of methodical laboratory experiments aimed at the proposal and testing of the developed methods of degassing during physical modelling. The results obtained on the basis of laboratory experiments realized on the specific physical model were discussed.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 2; 987-992
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of High Flow Rate Gas in the Process of Argon Blowing Trough Steel
Autorzy:
Merder, T.
Pieprzyca, J.
Warzecha, M.
Warzecha, P.
Powiązania:
https://bibliotekanauki.pl/articles/351630.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ladle
high intensity gas blowing
numerical modelling
physical modelling
Opis:
The article demonstrates results of modelling research tests concerning the analysis of possibilities of blowing gas into the metal bath at high flow rates in a steel ladle with a nominal capacity of 50 Mg. Various configurations concerning of gas introduction into the steel ladle were analysed. There were considered cases of blowing into the metal bath via one, two or three purging plugs, being installed on the bottom and via additional support for blowing the gas from the top through the lance. Results obtained from the water model of the reactor were verified with the results of numerical simulations.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2A; 905-910
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja udziału spoiw w suchej masie ogniotrwałej
Optimization of binder content in the refractory dry mix
Autorzy:
Malinowska, T.
Powiązania:
https://bibliotekanauki.pl/articles/391917.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Ceramiki i Materiałów Budowlanych
Tematy:
masa ogniotrwała sucha
spoiwo
obliczenia cieplne
doświadczenie
planowanie
kadź stalownicza
refractory dry mix
binder
thermal calculations
experiment
planning
steel ladle
Opis:
W pracy określono warunki cieplne stosowania suchych mas ogniotrwałych w obmurzu kadzi stalowniczych jako warstwy ochronnej. W oparciu o metodę planowania doświadczeń oceniono ilościowo wpływ wybranych spoiw na właściwość mas po wypaleniu. Temperatury wypalania próbek z mas ogniotrwałych przyjęto na podstawie przeprowadzonych obliczeń cieplnych w warunkach stacjonarnego przepływu ciepła. Przedstawiono wpływ: sumarycznego udziału spoiw (fosforanowego i boranowego) – czynnik X1 oraz ich wzajemnego stosunku (czynnik X2) na wytrzymałość na ściskanie (Y, A) próbek mas po wypaleniu. Wykazano, że maksymalne wartości wytrzymałości na ściskanie (67,5 MPa) uzyskuje się przy następujących wartościach czynników: X1 = 8% mas. i X2 = 5.
In this paper the thermal conditions of the refractory mixes, using as a protective layer of steel ladles, were defined. Based on the experimental design method, the influence of selected binder on the property of the mixes after firing was quantified. Firing temperature of the samples of refractory mixes was derived from the thermal calculations under conditions of steady thermal flow. The influence of the total binder content (phosphate and borate) – factor X 1, and their ratio (factor X2) on the compressive strength (Y, A) of the fired samples were presented. It was found that the maximum value of the compressive strength (67,5 MPa) was obtained at the following factors: X1 = 8%wt. and X2 = 5.
Źródło:
Prace Instytutu Ceramiki i Materiałów Budowlanych; 2013, R. 6, nr 13, 13; 37-48
1899-3230
Pojawia się w:
Prace Instytutu Ceramiki i Materiałów Budowlanych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Life Prediction Mechanism of Ladle Composite Structure Body Based on Simulation Technology
Autorzy:
Li, Gongfa
Jiang, Du
Sun, Ying
Jiang, Guozhang
Tao, Bo
Powiązania:
https://bibliotekanauki.pl/articles/353596.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ladle life prediction
initiative maintenance
crack propagation
thermal shock method
Opis:
Ladle plays an important role in the metallurgical industry whose maintenance directly affects the production efficiency of enterprises. In view of the problems such as low maintenance efficiency and untimely maintenance in the current ladle passive maintenance scheme, the life prediction mechanism for ladle composite structures is established which bases on the stress analysis of steel shell and ladle lining in the production process, combining conventional fatigue analysis and extended fracture theory. The mechanism is accurate and effective according to the simulation results. Through which, the useful life of steel shell can be accurately predicted by detecting the crack length of it. Due to the large number of factors affecting the life of the lining of the ladle, it is difficult to accurately predict the life of the ladle lining, so a forecasting mean based on the thermal shock method is proposed to predict the service life of the ladle lining in this paper. The life prediction mechanism can provide data support and theoretical guidance for the active maintenance of the ladle, which is the prerequisite for scientifically formulating ladle initiative maintenance program.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 4; 1555-1562
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of the Thermal Process in Ladle Metallurgy in Terms of the Impact on Energy Consumption and the Environmental Burden During Steel Production
Autorzy:
Lampa, Martin
Mokrošová, Lenka
Powiązania:
https://bibliotekanauki.pl/articles/2174906.pdf
Data publikacji:
2022
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
casting ladle
ladle furnace
extra-furnace processing
lining
energy consumption
ecological burden
steel production
continuous casting
high-temperature heating
Opis:
The paper focuses on reducing the energy intensity of ladle metallurgy as part of steel production and the associated reduction of pollutant emissions. It can be achieved by optimising the thermal work of metallurgical aggregates in terms of the impact on energy consumption and the environmental burden of steel production. It is about minimising the heat loss of liquid steel in the casting ladle throughout the entire process, from the melting equipment, through the extra-furnace processing, to the continuous casting of the steel.
Źródło:
Rocznik Ochrona Środowiska; 2022, 24; 246--259
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on Ladle Nozzle Clogging during Continuous Casting of Non-Oriented Electrical Steel with High Silicon
Autorzy:
Kong, Wei
Cang, Da-Qiang
Powiązania:
https://bibliotekanauki.pl/articles/355370.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electrical steel
ladle nozzle
clogging
CC
Opis:
To figure out the reason causing ladle nozzle clogging during CC (continuous casting) of a non-oriented electrical steel with high silicon (or HNO for short) and get a method to address it, this paper studied the theoretical calculation of flow rates during CC, the inclusions around the slide gate where ladle nozzle clogging happened, and Ca-treatment at the end of RH for decreasing ladle clogging of the electrical steel both theoretically and practically. The results showed that: The bigger diameter of a nozzle or less nozzle clogging can guarantee an enough flow rate for reaching the target casting speed. Ladle nozzle clogging can be predicted by comparing the percentage of slide gate opening. Al2 O3 and its composite inclusions were the main reason that caused the ladle nozzle clogging of the electrical steel. Higher [Al] or TO will increase the amount of Pure Ca wires for Ca-treatment. The results of the verification tests fit the thermodynamic calculation, and Ca-treatment using pure Ca wires could prevent ladle nozzles from clogging without affecting the magnetic properties of the electrical steel.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 1; 257-264
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 29

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