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(PDF) Thermal Modelling Of The Ladle Preheating Process
Transient Thermo-Mechanical Analysis of Steel Ladle ...

A typical thermal cycle of steel ladle refractory linings includes: Step 1, preheating the working lining using natural gas burner (to around 1400 ° C); step 2, slight temperature decrease due to thermal losses while moving from the preheating device to the converter and waiting for liquid steel tapping; step 3, sudden temperature increase due ...

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Study on the thermal cycle of Wire Arc Additive ...

The substrate preheating is one of the most effective methods to mitigate the thermal stress and crack. Therefore, it is important to explore the preheating impact on thermal behavior of WAAM parts. However, little has been done to model the effect of substrate preheating on ther mal behavior in WAAM process [6].

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Structure Optimization of Ladle Bottom Based on Finite ...

distribution in the ladle wall during the preheating process, a two dimensional model was developed. The model calculated the heat transfer and the velocity field in the gas phase inside the ladle as well as the heat transfer in the solid walls during the preheating process. Measurements of the temperature in an industrial lade

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Impact of steel ladle preheating on the decarburization of ...

Steel ladles need to be preheated to avoid thermal shock damage to the refractory lining. The preheating process lasts up to 40 hours. A natural gas firing is used as energy source to preheat the refractory lining up to a temperature of 1000 °C. Due to the high excess air flow during combustion, the exhaust gas contains considerable amount of ...

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A Study on the Thermal State of Steelmaking Ladles

The model calculated the heat transfer and the velocity field in the gas phase inside the ladle as well as the heat transfer in the solid walls during the preheating process. Measurements of the temperature profiles in an industrial ladle were carried out using an infrared thermography.

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15 Hyoung-Jun Lee Thermal Stress Cracking of Sliding Gate ...

transfer model of ladle plate Model Validation Summary Pohang University of Science and Technology Materials Science and Engineering Hyoung-Jun Lee 16 Assumed internal gas temperature (750 °°°°C) is reasonable to be applied to tundish sliding gate nozzle model for preheating stage The heat transfer coefficients are used to

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A Method for Steel Ladle Lining Optimization Applying ...

The finite element modeling of the steel ladle with an elastic material behavior was performed using the commercial software, ABAQUS. The process included preheating of the hot face of the working lining for 20 h to 1100 C and a subsequent thermal shock caused by tapping the steel melt with a temperature of 1600 C into the ladle.

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[PDF] Thermal analysis of a continuous casting tundish by ...

−− This work describes a computational model named TEMREP, which determines the thermal states of a tundish and the liquid steel temperature during continuous casting, as a function of steel ladle teeming temperature evolution, heat losses to tundish refractory lining, and insulating coating during transient and steady states of the operating process. Solution of the thermal equations is ...

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(PDF) Thermal Modelling of the Ladle Preheating Process

Dec 01, 2011· Abstract and Figures To predict the temperature distribution in the ladle wall during the preheating process a two dimensional model was developed. The model calculated the heat transfer and the...

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Numerical Simulation of Fluid Flow and Heat Transfer in a ...

Oct 15, 2018· The volume of fluid (VOF) multiphase model has been employed to track the interface between the liquid metal and the air. The SST k-ω model has been applied to model the turbulence due to natural convection in the ladle. The temperature evaluation in the refractory lining walls during preheating and teeming is shown.

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OXIPYR for Ladle Preheating.

preheating application available for use in smaller vessels and runners such as foundries and micro steel mills. To further improve their performance, flameless oxyfuel is applied. OXIPYR™ for Ladle Preheating. Fast and fuel-efficient oxyfuel preheating of vessels up to 100 tons in size.

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A Study on the Thermal State of Steelmaking Ladles

distribution in the ladle wall during the preheating process. The model calculated the heat transfer and the velocity field in the gas phase inside the ladle as well as the heat transfer in the solid walls during the preheating process. Measurements of the temperature profiles in an industrial ladle were carried out using an infrared thermography.

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Neural Network Thermal Model of a Ladle Furnace

In order to conclude the process, a steel sample is taken and the ladle is released to begin the continuous ingot casting process. 3. Neural network thermal model In order to start the process of defining the thermal model variables, all factors that, according to the literature and ex-perts on ladle furnace, would affect the variation of the ...

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MATHEMATICAL SIMULATION AND EXPERIMENTAL …

The mathematical model of thermal processes in a ladle at ladle metallurgy and continuous casting of steel is based on analytical description of the physical and chemical phenomena taking place with the technological processes in ladle. The main advantage of application of a mathematical model consists in possible simulation of various ...

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PHYSICAL MODELLING OF THE PROCESS OF MIXING LIQUID …

economical technique of ladle metallurgy is a process conducted in a steel ladle. The process of melt mixing in a ladle in order to achieve chemical and thermal homogeneity is a complex phenomenon. There are attempts to describe it by means of characteristic sequence of physical partial processes with the simultaneous help of data coming from ...

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Modeling of in-ladle direct thermal control rheocasting ...

Modeling of heat transfer for in-ladle DTC rheocasting was carried out to investigate the effect of pouring temperature, ladle material, ladle geometry, ladle preheat and alloy composition by two-dimensional finite volume method. Actual experiments were also carried out to compare the results obtained by modeling.

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A Method for Steel Ladle Lining Optimization Applying ...

Aug 09, 2018· The finite element modeling of the steel ladle with an elastic material behavior was performed using the commercial software, ABAQUS. The process included preheating of the hot face of the working lining for 20 h to 1100°C and a subsequent thermal shock caused by tapping the steel melt with a temperature of 1600°C into the ladle.

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Numerical Prediction and Thermal

Production Ladle The thermal stratification in the steel bath was also measuredin the 107 tonne ladle at SSABTunnpl~t AB In Lule~. The conditions were such that it was very difficult to protect metal ceramic tubes at the ladle wall from oxidation during preheating. Instead, the measure-mentswere madeby meansof thermocouples mounted

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Steel - Ladle metallurgy | Britannica

Steel - Steel - Ladle metallurgy: The carrying out of metallurgical reactions in the ladle is a common practice in practically all steelmaking shops, because it is cost-efficient to operate the primary furnace as a high-speed melter and to adjust the final chemical composition and temperature of the steel after tapping. Also, certain metallurgical reactions, for reasons of equipment design and ...

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Thermal Modelling of the Ladle Preheating Process

Thermal Modelling of the Ladle Preheating Process Abstract To predict the temperature distribution in the ladle wall during the preheating process a two dimensional model was developed. The model calculated the heat transfer and the velocity field in the gas phase inside the ladle as well as the heat transfer in the solid walls during the ...

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Ladle Furnace Refractory Lining: A review

control of process parameters during LF processing of liquid steel is essential. They report development of a model based advisory system, called ladle furnace on-line reckoner (LFOR), for the prediction and control of temperature and composition of steel in a LF. The thermal and chemistry models employed in the LFOR system

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Thermal Modelling of the Ladle Preheating Process - Glaser ...

Oct 11, 2011· To predict the temperature distribution in the ladle wall during the preheating process a two dimensional model was developed. The model calculated the heat transfer and the velocity field in the gas phase inside the ladle as well as the heat transfer in the solid walls during the preheating process.

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Analysis of Temperature Losses of the Liquid Steel in a ...

The model calculated the heat transfer and the velocity field in the gas phase inside the ladle as well as the heat transfer in the solid walls during the preheating process.

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A Method for Steel Ladle Lining Optimization Applying ...

by preheating for preferably 15–20 h, these stres-ses can be reduced.8 In addition, an increased ladle preheating temperature can reduce the tempera-ture drop of the steel melt and the temperature gradient of ladle linings, mitigate the thermal shock damage of lining materials, and thus extend the service life of the steel ladle.9 The effects of

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Utilization of casting ladle lining enthalpy for heating ...

The demanded enthalpy of ladle before tap and the real enthalpy of ladle as things stand are needed for heating gas savings during the preheating. The enthalpy changes of ladle lining are in the course of their cycling in steelworks solved by the model of lining thermal state.

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Effect of Slag Impregnation on Thermal Degradations in ...

process(innerladle),highcoolingrateduring thefirstminutesof the emptying stage, and low cooling rateduring dwell andmain-tenance stages. This complex thermal history generates thermal strain and/or stress and also possible phase changes. Tempera-ture variations also influence the corrosion rate. (2) Mechanical loadings.

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Transient Thermo-Mechanical Analysis of Steel Ladle ...

Mortarless refractory masonry structures are widely used in the steel industry for the linings of many high-temperature industrial applications including steel ladles. The design and optimization of these components require accurate numerical models that consider the presence of joints, as well as joint closure and opening due to cyclic heating and cooling.

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Press release - Ladle heating systems

Image caption, Kanthal ladle heater (002): The range of innovative Kanthal electric ladle heaters are now offered with thermal modelling, consultancy and installation services. Kanthal Kanthal is a world-leading brand for products and services in the fields of industrial heating technology and resistance materials.

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A Method for Steel Ladle Lining Optimization Applying ...

The finite element modeling of the steel ladle with an elastic material behavior was performed using the commercial software, ABAQUS. The process included preheating of the hot face of the working lining for 20 h to 1100°C and a subsequent thermal shock caused by tapping the steel melt with a temperature of 1600°C into the ladle.

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Numerical simulation of temperature field and thermal ...

An approach to the construction of thermal fields, assuming the presence of defects in the lining and in the case of intersecting thermal fields, is proposed. 13 To predict the temperature distribution in the ladle wall during the preheating process, a two-dimensional model was developed. The model calculated the heat transfer and the velocity ...

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ladle dryers notes in steel plant in pdf - MC World

Tundish - an overview ScienceDirect Topics. 6/4/2010 The influence of thermal effects on liquid steel flow in tundishes during a ladle-change operation and during steady-state conditions have been reported by Lowry and Sahai based on results from an elegant one-third scale water modeling study together with in-plant tracer measurements on the six-strand bloom caster at the Kansas City Works of ...

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@NML JAMSHEDPUR, pp. 09-15 Evaluation of efficacy of ...

The thermal conditions in a ladle change continuously with variations in the ... Ladle Preheating Preheating the ladles is an established procedure adopted to reduce the ... the process of tapping of the melt was simulated under the following conditions : 1) Time taken from the start of tapping start to the end of tapping has been ...

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Technical Report UDC 621 . 746 . 32 : 681 . 3 Numerical ...

thermal stress due to temperature deviation in the shell. Further-more, mechanical factors consist of the weight of the refractory and molten iron, the tare weight of the ladle when lifted, and the effect of tilting of the ladle when discharging molten iron. 2.2 Development of highly accurate refractory behavior model

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