Numerical and experimental investigation of temperature field of solidifying massive ductile-cast-iron roller

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F12%3APU98679" target="_blank" >RIV/00216305:26210/12:PU98679 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Numerical and experimental investigation of temperature field of solidifying massive ductile-cast-iron roller

Original language description

The quality of the working rollers used for rolling rails of different profiles is determined by the chemical and structural composition of the material of the rollers and the production technology The requirements of the quality cannot be ensured without perfect knowledge of the course of solidification, cooling and heat treatment of the cast rollers as well as the kinetics of the temperature field of the casting and mould. The solidification and cooling of ductile-cast-iron roller in metal and non metal mold is a very complicated problem of heat and mass transfer with a phase and structural changes described by the Fourier equation. An original application of ANSYS simulated the forming of the temperature field of the entire system comprising the casting, the mold and ambient. The simulation of the release of the latent heats of phase or structural changes is carried out by introducing the thermodynamic enthalpy function. In the experimental investigation of temperature field, an original methodology for the measurement of the distribution of temperatures and heat flows in the roller-mould system had been developed and verified in the operation. In the design of the original procedure, there were a number of problems connected with the great size of the roller and mould, uneven dilatation of the solidifying roller and mould, the installation and insulation of the thermocouples, the wiring of the thermocouple system, etc. The findings regarding the kinetics of the temperature field of the roller and mould, obtained from experimental research, were used for determining the boundary conditions and for the verification of the numerical simulation program. The calculation of the temperature field focused on the analysis of the effect of the mould separator on the course of solidification of the roller. The results of the mathematical modelling indicate that the distribution of temperatures and the solidification in the vertical direction is significantly uneven, this

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materiali in tehnologije

ISSN

1580-2949

e-ISSN

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Volume of the periodical

46 (2012)

Issue of the periodical within the volume

4

Country of publishing house

SI - SLOVENIA

Number of pages

4

Pages from-to

321-324

UT code for WoS article

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EID of the result in the Scopus database

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