The optimization of a concasting technology by two numerical models

Kavicka, Frantisek; Stetina, Josef; Sekanina, Bohumil; Stránský, Karel; Dobrovská, Jana; Heger, J.

doi:10.1016/j.jmatprotec.2006.03.113

Cited by 7 publications

(9 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Formation of structure is strongly affected by production technology, casting and solidification of these alloys. Solidification is a critical factor in the materials industry (Kavicka et al, 2007). Solute segregation either on the macro-or microscale is sometimes the cause of unacceptable products due to poor mechanical properties of the resulting non-equilibrium phases.…”

Section: Chemical Microheterogeneity Of Continuously Cast Steel Slabmentioning

confidence: 99%

Numerical Models of Crystallization and Its Direction for Metal and Ceramic Materials in Technical Application

Kavicka¹,

Stránský²,

Dobrovská³

et al. 2012

Crystallization - Science and Technology

View full text Add to dashboard Cite

Section: Chemical Microheterogeneity Of Continuously Cast Steel Slabmentioning

confidence: 99%

Numerical Models of Crystallization and Its Direction for Metal and Ceramic Materials in Technical Application

Kavicka¹,

Stránský²,

Dobrovská³

et al. 2012

Crystallization - Science and Technology

View full text Add to dashboard Cite

“…The aim of the measurements was to evaluate the course of the crack, the character of the structure in which the crack was propagating, the heterogeneity of the chemical composition of the elements in the matrix in the vicinity of the crack, and even the concentration of elements at the crack surface. Investigations were also made into the phenomena of initiation and propagation of the crack, as well as evaluation of the main cause for such phenomena [1,2] in general.…”

Section: Morphology and Chemical Heterogeneity Of A Transversal Crack...mentioning

confidence: 99%

“…Two original models have been developed and used in the investigation of a continuously cast lowcarbon-steel slab [1]. The first numerical 3D model of the temperature field of a concasting is capable of simulating the temperature field of a caster.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of a Transversal Crack in a Steel Slab

Dobrovská

Stránský

Kavicka

et al. 2007

MSF

View full text Add to dashboard Cite

This paper deals with an analysis of the possible causes of a transversal crack in a steel slab with a l300×l45 mm cross-section using results from two models. Samples were taken from and around the crack in order to analyze the concentration (i.e. chemical heterogeneity) of the relevant elements. Simultaneously, the concentration of elements at the surface of the crack was measured after the crack was opened. The chemical heterogeneity of elements was analyzed with the aid of the JEOL JXA 8600/KEVEX analytical equipment. The measurement results were processed using mathematical statistics procedures. The results proved that there was an internal crack initiating immediately below the curve of the solid-state temperature and consecutively propagating.

show abstract

“…it can be assumed that the above issues apply not only to the material which is cast iron [1-4], but also cast steel [5][6][7][8][9][10][11] and other groups of materials, including types of alloy cast iron [4,[12][13][14][15], to be used for heavy castings. unfortunately, there is a small number of articles on that castings, which mainly refer to ductile iron [16][17][18][19] and the methods of their production in a vertical arrangement in a casting mold [16].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

2022

View full text Add to dashboard Cite

The MeThod of InoculaTIon of hIgh-QualITy grey casT Iron InTended for MassIve casTIngs for BoTToM and dIsTance PlaTes as Well counTerWeIghTs ManufacTured as verTIcal casTIngsThe technology of producing castings of high-quality inoculated cast iron with flake graphite particles in the structure is a combination of the melting and inoculation process. Maintaining the stability of the strength and microstructure parameters of this cast iron is the goal of a series of studies on the control of graphitization and austenitic inoculation (increasing the number of primary austenite dendrites), and which affects the type of metal matrix in the structure. The ability to graphitize the molten alloy decreases with its holding in the melting furnace more than an hour. The tendency to crystallize large dendritic austenite grains and segregation of elements such as si, ni and cu reduce the ductility properties of this cast iron. The austenite inoculation process may introduce a larger number of primary austenite grains into the structure, affecting the even distribution of graphite and metal matrix precipitation in the structure. Known inoculation effects the interaction (in low mass) of additives: sr, ca, Ba, ce, La, produces MC 2 carbide). Addition of Fe in the inoculant influences the number and shape of austenite dendrites. Hybrid modification combines the effects of these two factors. The introduction of nucleation sites for the graphite eutectics and primary austenite grains result in the stabilization of the cast iron microstructure and an increase in mechanical properties. The obtained test results set the direction for further research in this area in relation to the production of heavy plate castings in vertical and horizontal pouring.

show abstract

The optimization of a concasting technology by two numerical models

Cited by 7 publications

References 2 publications

Numerical Models of Crystallization and Its Direction for Metal and Ceramic Materials in Technical Application

Numerical Models of Crystallization and Its Direction for Metal and Ceramic Materials in Technical Application

Analysis of a Transversal Crack in a Steel Slab

Archives of Metallurgy and Materials

Contact Info

Product

Resources

About