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Year 2005 No 1

Blacha L.
THE KINETICS OF ZN EVAPORATION FORM CU-ZN ALLOYS
Keywords: metallurgy|alloys|metal evaporation
No 1 (2005), p. 7-13
  mag01.pdf (166 kB)
mag01_eng.txt (815 B)  

Fouad O. A.
UPGRADING OF A LOW-GRADE TITANIUM SLAG BY SULPHATION ROASTING TECHNIQUE TO PRODUCE SYNTHETIC RUTILE
Keywords: ilmenite|titanium slag|sulphation roasting|synthetic rutile
No 1 (2005), p. 14-24
  mag02.pdf (764 kB)
mag02_eng.txt (1 kB)  

Wangyao P., Korath T., Harnvirojkul T., Krongtong V., Homkajai W.
THE SEM STUDY OF MICROSTRUCTURAL RESTORATION BY RE-HEAT TREATMENTS IN CAST SUPERALLOY TURBINE BLADE
Keywords: Microstructural Refurbishment|Rejuvenation|Re-Heat Treatment|Superalloys|Lifetime Extension|IN-738
No 1 (2005), p. 25-35
  mag03.pdf (2 MB)
mag03_eng.txt (2 kB)  

Ševčík A., Ševčíková J.
HIGH TEMPERATURE PROPERTIES AND SURFACE DEFECTS OF SLABS OF LOW CARBON STEELS IN THE AS - CAST STATE
Keywords: low carbon steels|slabs|high temperature strength|hot ductility|surface defects|grain boundary weakening|fracture|
No 1 (2005), p. 36-44
  mag04.pdf (1 MB)
mag04_eng.txt (1 kB)  

Gawad J., Madej L., Szeliga D., Pietrzyk M.
CELLULAR AUTOMATON TECHNIQUE AS A TOOL FOR A COMPLEX ANALSIS OF THE MICROSTRUCTURE EVOLUTION AND RHEOLOGICAL BEHAVIOUR
Keywords: cellular automata|internal variable model|dynamic recrystallization|
No 1 (2005), p. 45-53
  mag05.pdf (535 kB)
mag05_eng.txt (1 kB)  

Lothongkum G., Ratanamahasakul S., Wangyao P.
EFFECT OF HEAT TREATMENT CONDITIONS ON DYNAMIC PARAMETERS OF SECONDARY CARBIDE PRECIPITATION IN CENTRIFUGALLY CAST IRON-BASE SUPERALLOY
Keywords: Microstructural characterization|centrifugally cast Iron-base superalloy|Fe - Ni - Cr Alloy|Time - Temperature - Precipitation (TTP) diagram|
No 1 (2005), p. 54-61
  mag06.pdf (835 kB)
mag06_eng.txt (2 kB)  

Podrábský T., Juliš M., Pospíšilová S., Němec K., Hrbáček K., Rek A., Jonšta Z.
CHANGES IN MICROSTRUCTURE OF TURBINE WHEEL MADE OF INCONEL 713 LC
Keywords: cast nickel alloys|turbine wheel blades|grain boundaries|cracks|scanning electron microscopy|microstructure
No 1 (2005), p. 62-67
  mag07.pdf (1 MB)
mag07_eng.txt (839 B)  

Podrábský T., Stránský K., Pospíšilová S., Rek A., Dobrovská J., Juliš M.
HETEROGENEITY ALLOY OF INCONEL 713 LC
Keywords: cast nickel alloy|chemical heterogeneity|mathematical-statistical analysis|
No 1 (2005), p. 68-73
  mag08.pdf (384 kB)
mag08_eng.txt (1 kB)  

Molnár F., Čech J.
POSSIBILITITIES OF ZN-AL ALLOY PREPARATION BY REFINING OF HARD ZINC APPART IRON BY ALUMINIUM
Keywords: refining|hard zinc|intermetallic compound FeAl|FeAl3|directional solidification|hot pressing|
No 1 (2005), p. 74-77
  mag09.pdf (147 kB)
mag09_eng.txt (1 kB)  

Rabatin Ľ., Vadász P., Tomášek K.
REFINING ELECTROLYSIS OF THE SECONDARY SILVER ALLOYS
Keywords: silver|electrolysis|silver refining|
No 1 (2005), p. 78-87
  mag10.pdf (310 kB)
mag10_eng.txt (2 kB)  

Pecha J.
EFFECT OF HEAT TREATMENT ON MICRUSTRUCTURE AND PROPERTIES OF HIGH-CHROME STEEL USED IN POWER ENGINEERING
Keywords: heat resistance|spinels|brittle|ferit|austenit|structure|carbid|difraction|Cr equivalent|toughness|
No 1 (2005), p. 88-103
  mag11.pdf (812 kB)
mag11_eng.txt (3 kB)  

Cehlár M., Mihok J., Kyseľová K., Bohušová V.
IMPORTANCE OF KOSOVO LIGNITE DEPOSITS EVALUATION BY FORM OF INVESTMENT EFFICIENTY IN CREATED MARKET ECONOMY
Keywords: lignite mines|economic analysis|investment efficienty|
No 1 (2005), p. 104-115
  mag12.pdf (968 kB)
mag12_eng.txt (2 kB)  

Mišičko R.
CRACKING THEORIES AND HYPOTHESES OF CONTINUOUSLY CAST PRODUCTS
Abstract
Continuous casting (CC) belongs to the metallurgical technologies which during last forty years radically charged nature of steel production. It denotes revolution in steel casting technology. First and foremost it eliminated heavy operations, introduced smoothness to the steel production and allowed considerable increase of earnings as effect of energy and manufacturing cast savings. The intensive development in 80. and 90. years of last century was oriented on increasing of cast volumes, casting speed, complexity of the process, its automation and achieving of high firmness and safety of operation and also on increasing of surface and inner quality of cast products. At the same time many knowledge and experience were achieved, which leads to the fact, that CC is today high effective dominating technology for production of quality steel products. The dominant part is further process online by metals forming technologies.
In the paper theoretical analyse of present state is performed in the field of cracking theory of CC steel products. There is analyse of fundamentals of seven theories and hypothesis of cracking, which were showed in literature: crystallizing cracking, creep failure, embrittlement induced by copper weared from crystalliser, cracking associated with oscillation marks, cracking associated with creation of local heat nodes, precipitation induced embrittlement and embrittlement in austenite – ferrite phase area. These theories are basis at interpreting creating mechanics of surface cracks on CC products.

Keywords: cracking|brittlenes|crack|mechanism|surface skin|
No 1 (2005), p. 116-125
  mag13.pdf (476 kB)
mag13_eng.txt (2 kB)  

Kapustová M.
THE MATHEMATICAL MODEL FOR COMFORT AT WORK DETERMINATION IN ENGINEERING PRODUCTION
Keywords: working load|workplace|summary load|mathematical model|comfort at work|
No 1 (2005), p. 126-133 Vydáva eBooks
  mag14.pdf (272 kB)
mag14_eng.txt (2 kB)