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Year 2009 No 2

Borovský T., Kijac J., Domovec M.
ANALYSIS OF THE SLAG AND METAL INFLUENCE ON THE LIFE OF ELECTRIC ARC FURNACE HEARTH REFRACTORY LINING
Keywords: wear|refractory lining|steelmaking|electric arc furnace|oxidic slag|metal|
No 2 (2009), p. 77-85
  mag01.pdf (347 kB)
mag01_eng.txt (2 kB)  

Petrík J., Gengeľ P.
THE CAPABILITY OF GREEN SAND MOLD STRENGTH AND MOLD PERMEABILITY MEASUREMENT PROCESS
Abstract
The capability of a process is a measure of its ability to satisfy customer’s requirements. Process capability studies are carried out to compare customer’s requirements with process performance to identify the resources for process measuring (monitoring). The measurement process is realized in measurement system, which involves measurement equipment, methods, appraisers, software, conditions of environment and other factors. If the analyzed measurement system is capable, it is likely that the measurement process, taking place in it is capable as well. One of measurement systems analysis (MSA) methods, analysis of repeatibility and reproducibility (GRR) was used for evaluation of measurement’s capability of green sand mold compression strength RC2, shearing strength RT2 and mold permeability. Molding processes were sand is used to make the mold produce by far the largest quantity of castings. Good castings cannot be made without good – class molds. Because of the importance of the mold, the quality of casting processes are often described by the materials and methods employed in molding. Ten samples of green sand with various content of dust were measured by routine methods by two appraisers in two trials. Analyzed process is capable for measurement measurement of permeability, but non-capable for measurement of strenght. The increasing of capability could be possible by increasing of discrimination (more fine scale). The influence of appraisers on capability is positive with negligible difference in their competence.

Keywords: MSA|green sand|permeability|strength|
No 2 (2009), p. 86-92
  mag02.pdf (371 kB)
mag02_eng.txt (2 kB)  

Buľko B., Kijac J., Domovec M.
OPTIMALIZATION SLAG COMPOSITION IN LADLE FURNACE CONSIDERING TO EFFECTIVE STEEL DESULFURIZATION
Keywords: steel desulfurization|ladle furnace|sulphur distribution coefficient|
No 2 (2009), p. 93-99
  mag03.pdf (168 kB)
mag03_eng.txt (2 kB)  

Kováčová A., Kvačkaj T.,Kvačkaj M., Donič T., Martikán M., Besterci M.
STRESS-STRAIN CURVES PROGRESS ANALYSE OF UFG Cu DURING DYNAMIC LOADING AND ITS FRACTURE AREAS INVESTIGATION
Keywords: ECAP|UFG copper|dynamic tensile tests|dynamic tensile properties|fracture analyse|
No 2 (2009), p. 100-104
  mag04.pdf (278 kB)
mag04_eng.txt (2 kB)  

Ambriško Ľ., Pešek L.
ACCURACY OF STRAIN MEASUREMENT USING ME 46 VIDEOEXTENSOMETRIC SYSTEM
Keywords: strain|videoextensometry|accuracy|
No 2 (2009), p. 105-111
  mag05.pdf (347 kB)
mag05_eng.txt (327 B)  

Andrejovská J., Mihalik J., Kovaľ V., Bruncková H., Dusza J.
MICROSTRUCTURE AND PROPERTIES OF PB FREE PIEZOELECTRIC CERAMICS ON THE BASE (K0.5 Na0.5)NbO3
Keywords: piezoelectric ceramics|(K0.5 Na0.5)NbO3|AgNbO3|LiSbO3|hardness|fracture toughness|strength|
No 2 (2009), p. 112-116
  mag06.pdf (505 kB)
mag06_eng.txt (2 kB)  

Vaszi ZS. , Varga A.
DESIGN AND VERIFICATION OF THE MATHEMATICAL MODEL FOR DETECTING THE THROUGHPUT OF THE COMPRESSOR STATIONS
Keywords: Compressor station|mathematical model|throughput|compressor set|
No 2 (2009), p. 117-125
  mag07.pdf (150 kB)
mag07_eng.txt (2 kB)  

Budayová M. , Varga A.
THE RESULTS OF THE MEASUREMENTS BIOMASS GASIFICATION IN A FLUIDIZET BED REAKTOR
Keywords: biomass|gasification|syngas|fluid reaktor|
No 2 (2009), p. 126-130
  mag08.pdf (138 kB)
mag08_eng.txt (2 kB)