Přístupnostní navigace
E-application
Search Search Close
Publication detail
KAVIČKA, F. DOBROVSKÁ, J. STRÁNSKÝ, K. SEKANINA, B. ŠTĚTINA, J.
Original Title
The temperature field of a gravitationally cast ductile-cast-iron roller and its chemical and structural heterogeneity
Type
book chapter
Language
English
Original Abstract
The quality of the working rollers from ductile-cast-iron used for rolling rails 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. An original application of ANSYS simulated the forming of the temperature field of the entire system. 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. The kinetics of the solidification has a measurable and non-negligible influence on the chemical and structural heterogeneity of the investigated type of ductile-cast-iron. Tying on to the results of the model of the temperature field of the cast rollers, an original methodology was developed for the measurement of chemical microheterogeneity. The structure of this cast-iron is created by a great amount of the transition form of graphite and small amount of globular graphite and also lamellar graphite and cementite, whereas the structure of the metal matrix is perlitic. The chemical and structural heterogeneity of the cast roller is therefore a significant function of the method of melting, modification and inoculation and the successive procedures of risering, casting and crystallization after cooling.
Keywords
cast-iron rollers, solidification and cooling, temperature field, numerical model, chemical and structural heterogeneity, measurement.
Authors
KAVIČKA, F.; DOBROVSKÁ, J.; STRÁNSKÝ, K.; SEKANINA, B.; ŠTĚTINA, J.
RIV year
2013
Released
10. 4. 2013
Publisher
WIT Press Southamptom, Boston
Location
UK
ISBN
978-1-84564-700-1
Book
Fluid structure interaction VII
Edition
C.A. Brebbia, G.R. Rodriguez
Edition number
1
Pages from
215
Pages to
226
Pages count
12
BibTex
@inbook{BUT99258, author="František {Kavička} and Jana {Dobrovská} and Karel {Stránský} and Bohumil {Sekanina} and Josef {Štětina}", title="The temperature field of a gravitationally cast ductile-cast-iron roller and its chemical and structural heterogeneity", booktitle="Fluid structure interaction VII", year="2013", publisher="WIT Press Southamptom, Boston", address="UK", series="C.A. Brebbia, G.R. Rodriguez", edition="1", pages="215--226", isbn="978-1-84564-700-1" }