Journal ArticleDOI
Mold behavior and its influence on quality in the continuous casting of steel slabs: Part i. Industrial trials, mold temperature measurements, and mathematical modeling
TLDR
In this paper, an extensive study has been conducted to elucidate mold behavior and its influence on quality during the continuous casting of slabs, which combined industrial measurements, mathe matical modeling, and metallographic examination of cast slab samples.Abstract:
An extensive study has been conducted to elucidate mold behavior and its influence on quality during the continuous casting of slabs. The study combined industrial measurements, mathe matical modeling, and metallographic examination of cast slab samples. The industrial mea surements involved instrumenting an operating slab mold with 114 thermocouples in order to determine the axial mold wall temperature profiles for a wide range of casting conditions. A three-dimensional (3-D) heat-flow model of the mold wall was developed to characterize the heat fluxes in the mold quantitatively from the measured mold temperature data. Furthermore, heat-flow models were developed to examine steel solidification phenomena and mold flux behavior at the meniscus. Slab samples collected during the industrial trials were examined metallographically to evaluate the cast structure and defects. Owing to the length of the study, it is presented in two parts, the first of which describes the experimental techniques employed in the instrumentation of the mold together with the details of the industrial trials and mold temperature measurements. Also, the mathematical modeling technique applied to determine the axial heat-flux profiles from the measured mold temperature data is presented. It is shown that a fully 3-D model of the mold wall is needed to convert the measured temperatures to heat-flux profiles properly.read more
Citations
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A metal-base alloy product and methods for producing the same
TL;DR: In this article, the metal base alloy product consists of the formula Mebase Ta Sib Crc Mnj Ve Cf, wherein -Mebase is a metal base selected from the group consisting of Fe, Co and Ni, in an amount ranging from about 45-75 w% w%, -Ta is an alloying material selected from a group of Mo, Nb and Ta, and -Cc is a further alloying member with an amount varying from about 2-4 w%.
Journal ArticleDOI
Study on meniscus temperature fluctuation during mold oscillation in continuous casting by modeling experiments
TL;DR: In this article, the temperature of the meniscus in continuous casting was measured during mold oscillation by modeling experiments, and it was found that the temperature fluctuation of early solidification shell is their common mechanism.
Journal ArticleDOI
Effect of Cooling Intensity and Position on Solidification in Semi-Continuous Casting of Copper
TL;DR: In this paper, a three-dimensional numerical model has been developed including solidification behavior of copper through the mushy zone, and the combination of increasing secondary cooling intensity and reduction of primary cooling intensity can increase pool length and mushy-zone thickness.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
Book
Elementary Fluid Mechanics
TL;DR: The Reynolds Transport Theorem and the Impulse-Momentum Principle as discussed by the authors have been used to describe the behavior of real and simulated real fluids. But they do not describe the dynamics of real fluid flow.
Journal ArticleDOI
Mold behavior and its influence on quality in the continuous casting of steel slabs: Part II. Mold heat transfer, mold flux behavior, formation of oscillation marks, longitudinal off-corner depressions, and subsurface cracks
TL;DR: In this paper, the authors measured axial heat-flux profiles from temperature measurements conducted on a slab mold under routine operating conditions and found that the heat flux was observed to have a maximum value at the meniscus and to decline with increasing distance down the mold.
Journal ArticleDOI
The Thermal Field in Continuous-Casting Moulds
TL;DR: In this paper, the effect of the following variables on mould temperatures has been studied: water inlet temperature, water velocity, direction of water flow, scale deposition, wall thickness, thermal conductivity, casting speed and carbon content of the steel being cast.
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