Mathematical Simulation of Process Parameters in the case of Rapid Solidification of Steel

Rapid solidification of steel was investigated experimentally under laboratory conditions by immersion of cold copper rods in steel baths. For a better understanding of the process parameters during rapid solidification, an explicit finite difference model was employed. In the calculation, a coeffic...

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Bibliographic Details
Published in:Steel research international 2003-11, Vol.74 (11-12), p.708-715
Main Authors: Volkova, Olena, Heller, Hans‐Peter, Janke, Dieter
Format: Article
Language:English
Subjects:
Applied sciences
Copper
Exact sciences and technology
Heat transfer
local cooling rate (LCR)
local heat flux density of solidification (LSHFD)
local heat flux density of superheat reduction (LShRHFD)
local solidification rate (LSR)
local time of solidification (LST)
local time of superheat reduction (LShRT)
Mathematical models
Metallurgical fundamentals
Metals. Metallurgy
Process parameters
Production of metals
Rapid solidification
rapid steel solidification
Reduction
Solidification
solidification model
solidification parameters
Steels
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Summary:Rapid solidification of steel was investigated experimentally under laboratory conditions by immersion of cold copper rods in steel baths. For a better understanding of the process parameters during rapid solidification, an explicit finite difference model was employed. In the calculation, a coefficient of heat transfer between a frozen steel shell and solid copper of α = 40 [KW/m2·K] is assumed in good agreement with experimental data derived from temperature measurements. The solidification parameters such as local time of solidification (LST), local time of the superheat reduction (LShRT), local solidification and cooling rates (LSR, LCR) and local heat flux density of solidification and superheat reduction (LSHFD, LShRHFD) can be calculated using the developed model, in dependence on the processing conditions. This influence of processing parameters, such as steel bath superheat, steel bath material, immersed body material, initial temperature of immersed body and immersed body geometry, were the subject of intensive investigations.
ISSN:1611-3683
1869-344X
DOI:10.1002/srin.200300254