THE MODEL OF TEMPERATURE FIELD AND CHEMICAL HETEROGENEITY OF SOLIDIFYING DUCTILE-CAST-IRON ROLLER

被引：0
|
作者：
Dobrovska, Jana [1 ]
Kavicka, Frantisek [2 ]
Stransky, Karel [2 ]
Sekanina, Bohumil [2 ]
机构：
[1] VSB Tech Univ Ostrava, Fac Met & Mat Engn, Av 17 Iistopadu 15, Ostrava 70833, Czech Republic
[2] Brno Univ Technol, Fac Mech Engn, Brno 61669, Czech Republic
来源：
PROCEEDINGS OF THE ASME/JSME 8TH THERMAL ENGINEERING JOINT CONFERENCE 2011, VOL 1 PTS A AND B | 2011年
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中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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. It is therefore necessary to find and ensure optimal relationships between the matrix structure and the resultant values of the mechanical properties of the rollers in order to maximize the length of life. The requirements introduced here 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 kinetics of the solidification has a measurable and non-negligible influence on the chemical and structural heterogeneity of the investigated type of 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.
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页码：131 / +
页数：2
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