study of the deskulling problem of tundishes in continuous
Optimization of a Six-Strand Continuous Casting Tundish
Apr 12 2012 · Studies on multistrand tundishes are drawbacks of the continuous casting technology. The additionally valuable as such tundishes predominate in current state of this technology development allows the Poland s metallurgical industry because of the produc- 10–12 casting of liquid steel semifinished products with a shape tion profile.
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(PDF) The effect of slag nature on deskulling of tundish
Bad deskulling of tundishes is a major problem in continuous casting of steel and can occur due to the chemical reactions between the refractory lining and the slag carry over from ladle to tundish.
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Steel Making Continuous casting ISlideShare
Mar 16 2016 · MY 301 Steel Making Processes A) Clogging and impurities in tundishes During continuous casting processes impurities like deoxidation products in the melt deposit at the walls of the tundish nozzle and the stopper. This phenomenon termed clogging causes obstruction of the flow and decreases the quality of the product.
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FLUID FLOW HEAT TRANSFER AND INCLUSION MOTION
The κ-ε two-equation model is used to simulate the fluid flow in the continuous casting tundish coupling with the effect of thermal buoyancy. The maximum temperature difference in the whole tundish is 8.2 K. The existence of the stopper rod has a big effect on the fluid flow entering the Submerged Entry Nozzle (SEN) and the mold.
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Impact pad for a continuous caster tundish-Free Patent
Tundishes located between the ladle delivering liquid steel to the caster floor and the continuous caster mold are large containers for holding a reservoir of liquid steel. The liquid steel is transferred from the ladle through a ladle shroud extending into the tundish and the liquid steel is fed at a continuous or semicontinuous flow rate
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Water model simulation of tundish flow under varying
Water model studies have been conducted to characterise the flow conditions in continuous casting tundishes under conditions of open and submerged nozzles. In this investigation simulations of practical problems of flow interruptions from the ladle thermal inversions due to uninsulated ladle and pneumatic agitation near the tundish end wall
Get PriceCOMPUTATIONAL STUDY OF A TRAILBLAZER MULTI
transport mechanism. The CFD study of new grade concentration over old grade at different time interval for three tundishes was illustrated in the figure 3. It was observed from the figure that for new tundish the transition period was over within 10 minutes compare to other two tundishes which took a
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Recent experiences ofcontinuous casting at Highveld Steel
stopper problems. Aircooled rods have been used but there appeared tobenoapparent advantage. Ladles are lined with 42percent and 60percentAlumina bricks. Comparison ofthetwotypes ofrefractories hasshown a definite advantage and acost saving when using the second type ofRO 06jton. Ladles arenot preheated. Tundishes
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TUNDISH NOZZLE CLOGGINGAPPLICATION OF
Clogging of the tundish nozzle is a major castability problem in continuous casting of steel for several reasons. Firstly clogging increases the frequency of operation disruptions to change nozzles or tundishes or even to stop casting. These extra transitions increase operating cost
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USAImpact pad for a continuous caster tundish
An impact pad for eliminating surface turbulence in a continuous caster tundish the impact pad having a base for receiving an incoming ladle stream and one or more sidewalls extending in an upward direction along the periphery of the base. Each upward extending sidewall includes an inner surface having an undercut portion facing the incoming ladle stream.
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Challenges and Solutions for CONTINUOUS CASTING
Identification of problem areas Conceptual design studies Detailed product development Improvement of existing designs Refractory Technology 26th April 2016 Cologne Sven Karrasch tkSE AGWilhelm Parbel RHI AG 30 Lipped impact pot TUNFLOW™ Rel. Max. Velocity 100 76
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Particle-Size-Grouping Method of Inclusion Agglomeration
sion to walls in a continuous casting tundish by a 3-D trans-port analysis. They divided particles into 12-size groups from 25 to 150mm and calculated the removal efficiency of each particle size. In the above studies except Nakanishi and Szekely3) the Saffman–Turner model was applied with-out any correction for the agglomeration efficiency.
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An investigation of slag floatation and entrapment in a
temperature and flow fields for 1- to 6-strand continuous-casting tundishes. In this study the flow field was redesigned with weirs resulting in the addition of a vertical component to Stoke s equation. The results indicate an increase in the velocity that cause a rise of inclusions (smaller inclusions (<20 µm)). Consideration of slag
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Optimization of a Six-Strand Continuous Casting Tundish
Apr 12 2012 · Among the research results reported in the literature multistrand tundishes seldom occur. Most of the reported studies involve the flow of steel and separation of inclusions in single-
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USAImpact pad for a continuous caster tundish
An impact pad for eliminating surface turbulence in a continuous caster tundish the impact pad having a base for receiving an incoming ladle stream and one or more sidewalls extending in an upward direction along the periphery of the base. Each upward extending sidewall includes an inner surface having an undercut portion facing the incoming ladle stream.
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An improved turbulence model for flow simulation in a
continuous casting process certain assumption were made to ease the complexity of the task. First of all the actual tundish has wall as shown in Fig. 2(a). In this study the tundish is assumed to be rectan-gular as shOwn in Fig. 2(b). It is also assumed that the existence of the
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An investigation of slag floatation and entrapment in a
temperature and flow fields for 1- to 6-strand continuous-casting tundishes. In this study the flow field was redesigned with weirs resulting in the addition of a vertical component to Stoke s equation. The results indicate an increase in the velocity that cause a rise of inclusions (smaller inclusions (<20 µm)). Consideration of slag
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Intermixing Model of Continuous Casting during a Grade
studies focus on mixing in tundishes using physical water models 4-8 mathematical models 9-12 and experimental plant measurements. 2 13 Other work includes experimental studies of grade separators 3 14 and a few studies of mixing in the strand. 1 15 16 In previous work on mixing 1 the composition of the liquid can be specified as a
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Author Index The Evolution of Metallurgical Education p. 3
Continuous Caster Tundishes p. 589 Study of a Tundish Using a 1/3-Scale Water Model p. 593 Expert System for Slab Disposition and Grade Assignment p. 601 Surface Quality Improvement of High Carbon Steels p. 607 Reduction of Pencil Pipe Defects at LTV Steel s Cleveland Works No. 1 Continuous
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Designing and Computational Modeling Study of Innovative
From the above study it is observed that the modified stopper rod with water cooled sub-chamber can be used to reduce skull formation within the tundish during draining at the last stage of every sequence of continuous casting.
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Refractory Lining of a Continuous Casting TundishIspatGuru
Dec 23 2014 · In the continuous casting (CC) of steels tundish is a buffer refractory lined vessel which is located between the ladle and the CC mould. The tundish serves the purpose of a reservoir and a distribution vessel. Over the years there have been dramatic changes in CC tundish.
Get PriceMohamad Amin RMIT UniversityAcademia.edu
This study reports the synthesis characterization and the catalytic application of Co−Mn oxide nanoparticles supported on CeO 2 nanocubes with the specific aim of investigating the effect of nanointerfaces in tuning structure−activity properties. Study of the Deskulling Problem of Tundishes in Continuous Casting more. by Mohamad Amin
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BACKGROUND SUMMARY
Full-scale water model studies of billet and slab caster tundishes. Solution of breakout problems in the casting of steel rounds billets and slabs. Study of cracking problems in as-solidified centrifugally-cast rolls. Casting Consultants Inc. has also provided assistance in
Get PriceMetallurgical and Materials Transactions B Vol. 32B No
The different conditions of the parametric study are listed in Table II. Casting speed V C refers to a typical size of the continuous-cast steel slab (0.203m x 1.321m) and can be easily converted into liquid steel flow rate through the nozzle (multiply by 0.203m x 1.321m to get
Get PriceRefractory Lining of a Continuous Casting TundishIspatGuru
Dec 23 2014 · In the continuous casting (CC) of steels tundish is a buffer refractory lined vessel which is located between the ladle and the CC mould. The tundish serves the purpose of a reservoir and a distribution vessel. Over the years there have been dramatic changes in CC tundish.
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IEEE/CAA Journal of Automatica Sinica
Abstract This paper investigates the batching problem for steelmaking and continuous casting production in an iron and steel enterprise. The tasks of this problem are to decide how to select slabs and determine their width how to group the selected slabs into charges and then group the charges into tundishes how to determine the sequence of charges in each tundish and how to group
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Mohamad Amin RMIT UniversityAcademia.edu
This study reports the synthesis characterization and the catalytic application of Co−Mn oxide nanoparticles supported on CeO 2 nanocubes with the specific aim of investigating the effect of nanointerfaces in tuning structure−activity properties. Study of the Deskulling Problem of Tundishes in Continuous Casting more. by Mohamad Amin
Get PricePhysical hnodelling of Tundish Plasma Heating Mathe-
ISIJ International Vol. 36 (1996) No. 9 Tundish model J Centered Off-centered h-LD-j Ii l hl2 cm ll Dog-House 2 I l q r i -l __ Ir_1rv_v___ I " l C r vav R Flow devlator l T dlf Fig. 2. Positions of the heating jet and trajectories of tracers in the tundish model. consequently of the steam jet was also varied in the positions centered and off-centered just in the center of
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ISWCD-Laboratory for Continuous Solidification Processes
Further information on this project may be found in Ranegger G. Meile W. (2001) The effects of melt flow on particle separation and deposition in continuous casting tundishes Part of final report Christian Doppler Laboratory for Continuous Solidification Processes.
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