The model of temperature field and chemical heterogeneity of solidifying ductile-cast iron roller

conference paper

English

The quality of the working rollers ussed for rolling of different profiles is determined by the chemical and structural composition of the material of the rollers and the production technology. It is therefor 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.

ductile-cast iron roller, course of solidification, kinetics of the temperature field, measurement of chemical icroheterogeneity

KAVIČKA, A.; DOBROVSKÁ, J.; STRÁNSKÝ, K.; SEKANINA, B.

2011

13. 3. 2011

ASME

Honolulu USA

978-0-7918-3892-1

Proceedings of the ASME/JSME 2011 (AJTEC2011)

8

T44081

T44081

10