study of the deskulling problem of tundishes in
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 decrease productivity and lower quality. Secondly clogging can lead directly to a variety of quality problems.
MODEL STUDY OF TUNDISH STEEL INTERMIXING AND
· physical models of tundishes currently available. The first model is the one of a four-strand asym-metric tundish of the CCM No.2 operating in TZ. The CC-machine No.2 of TZ is of an eight-strand design set for billets a radial type with the radius of curvature of 9 m and is equipped with two asymmetric four-strand tundishes for casting 3 .
Formation of Slag eye in an Inert Gas Shrouded Tundish
The present modeling study allows us to observe the transient and steady-state behaviors of slag eye s in tundishes for gas flow rates ranging from 2 to 12 . Also the numerical simulation shows us the usefulness of using the VOF and discrete phase models to predict slag eye sizes in a tundish.
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 decrease productivity and lower quality. Secondly clogging can lead directly to a variety of quality problems.
A Novel Tundish for Single Strand Slab CastingNASA/ADS
Increasing the production efficiency of the continuous casting process requires casting longer sequences of ladles without stopping and restarting the caster. As the demand for wider ranges of steel products increases at the same time the intermixing of dissimilar grades is becoming a problem of growing concern. Large quantities of metal loss occurs from down gradation when two highly
COMPUTATIONAL 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 period of 20 minutes.
Refractory Lining of a Continuous Casting TundishIspatGuru
· Refractory Lining of a Continuous Casting Tundish. 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.
A Novel Tundish for Single Strand Slab Casting SpringerLink
· The computational fluid dynamics study of new grade concentration over old grade at different time interval for three tundishes is illustrated in Fig. 3. It was observed from the figure that for novel tundish the transition period was over within 10 min compared to other three tundishes which took a period of 15–20 min.
TUNDISHThink HWI
· mathematical analysis and algorithms to study fluid flows. HWI utilizes this technique to help our customers enhance steel flow inside their tundishes. Over the years demand for CFD has been growing due to improvements in the accuracy of the software programs used in the studies. This method allows us to look more closely
A mathematical modeling study of the influence of small
· The RTD curves in tundishes could be categorized as "dead water" type from the classification by Danckwerts (1953). The analysis of plug volume fraction (Sahai and Ahuja 1986) and dead volume fraction (Sahai and Emi 1996) could be used to evaluate these type of RTD curves. However in the present study the breakthrough time peak
Developing a theory of the refining of metal in tundishes
· Results are presented from a theoretical evaluation of the extent to which metal is refined of alumina particles through their interaction with a covering slag in the tundish of a continuous caster. Mass exchange between the alumina particles and the refining slag is analyzed by simultaneously solving equations that describe the convective diffusion of the inclusions in the metallic melt and
A mathematical modeling study of the influence of small
· The RTD curves in tundishes could be categorized as "dead water" type from the classification by Danckwerts (1953). The analysis of plug volume fraction (Sahai and Ahuja 1986) and dead volume fraction (Sahai and Emi 1996) could be used to evaluate these type of RTD curves. However in the present study the breakthrough time peak
KRAA deskulling machine for tundish and
PURPOSE A device for removing skull of a tundish is provided to remove the skull of a tundish for the sake of an operator and to increase productivity by correctly operating a push rod to a tundish steel tap hole without a complex process. CONSTITUTION A remover comprises a landing frame(11) rotating a tundish a traveling truck frame(16) of which the operating position is decided in the
TUNDISHThink HWI
· mathematical analysis and algorithms to study fluid flows. HWI utilizes this technique to help our customers enhance steel flow inside their tundishes. Over the years demand for CFD has been growing due to improvements in the accuracy of the software programs used in the studies. This method allows us to look more closely
PHYSICAL MODELLING OF TUNDISH SLAG
study of character of casting in the tundish in order to optimize the range of intermixed zone 19 and the inner arrangement of tundishes 20 . Thus to find the critical level of steel bath for the entrain-ment of tundish slag it was decided that research will be con-ducted in that tested and proved model.
analyze complex phases of slag tundish plaster reactions
(PDF) Study of the Deskulling Problem of Tundishes in . This analysis was for 820 tundish slag samples and showed that Al 2 O 3 content and C/S ratio ( ) have important roles in the percentage of tundishes where the skull was locked into the safety lining.
(PDF) Thermal Analysis of Tundish in Continuous Casting
Thermal Analysis of Tundish in Continuous Casting Machine in Steel Industry A Review. Download. Thermal Analysis of Tundish in Continuous Casting Machine in Steel Industry A Review
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 decrease productivity and lower quality. Secondly
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 decrease productivity and lower quality. Secondly clogging can lead directly to a variety of quality problems.
TUNDISHThink HWI
· The tundish is a refractory-lined intermediary vessel located between the ladle and the caster. It is an integral part of the continuous casting process that directs and controls the flow of steel to the caster mold. The tundish is designed to provide a constant depth
Performance Optimization of a Six-Strand Tundish
· The aims of the present study are to predict and improve inclusion separation capacity of a six strand tundish by employing flow modifiers (dams and weirs) and to assess the influence of inclusion properties (diameter and density) together with velocity of liquid steel at the inlet gate on the inclusion removal efficiency of a six-strand tundish.
(PDF) Thermal Analysis of Tundish in Continuous Casting
Thermal Analysis of Tundish in Continuous Casting Machine in Steel Industry A Review. IRJET Journal. Download PDF
Numerical calculation of fluid flow in a continuous
· flow field are central to a study of the removal of nonmetal- lic inclusions in a continuous casting tundish. Although the literature related to the problem of nozzle blockage is a testimony of both the importance and complexity problem only a limited amount of information on the hydro-
Intermixing Model of Continuous Casting during a Grade
· vary with the specific tundish under study. It is relatively straight forward however to obtain good agreement between measurements and simple equations. Finite difference models have been applied successfully by several authors to model steady-state 9-11 and transient 12 mixing phenomena in continuous-casting tundishes.
Developing a theory of the refining of metal in tundishes
· Results are presented from a theoretical evaluation of the extent to which metal is refined of alumina particles through their interaction with a covering slag in the tundish of a continuous caster. Mass exchange between the alumina particles and the refining slag is analyzed by simultaneously solving equations that describe the convective diffusion of the inclusions in the metallic melt and
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 decrease productivity and lower quality. Secondly
Numerical Investigation of Unsteady Molten Steel Flow and
Inclusion motion in tundishes is calculated by coupling with a molten steel flow simulation. A computational fluid dynamics technique was employed to study the unsteady molten steel flow and inclusion motion in the ladle change period. To understand the unsteady phenomena in tundishes clearly a simplified rectangular tundish is adopted.
Issue No. 1 Apriltechnagroup
This paper reports an investigation carried out on the deskulling problem of tundishes at the Mobarakeh Steel Plant in Iran. 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.
Developing a theory of the refining of metal in tundishes
· Results are presented from a theoretical evaluation of the extent to which metal is refined of alumina particles through their interaction with a covering slag in the tundish of a continuous caster. Mass exchange between the alumina particles and the refining slag is analyzed by simultaneously solving equations that describe the convective diffusion of the inclusions in the metallic melt and
PHYSICAL MODELLING OF TUNDISH SLAG
study of character of casting in the tundish in order to optimize the range of intermixed zone 19 and the inner arrangement of tundishes 20 . Thus to find the critical level of steel bath for the entrain-ment of tundish slag it was decided that research will be con-ducted in that tested and proved model.
Refractory Lining of a Continuous Casting TundishIspatGuru
· Refractory Lining of a Continuous Casting Tundish. 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.
