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Local Resistance of Heating Molybdenum Sheet in a Test Device
 
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1
University of Zilina, Univerzitna 1, 01001 Zilina, Slovak Republic
 
2
Lublin University of Technology, Faculty of Mechanical Engineering, Institute of Transport, Internal Combustion Engines and Ecology, 36 Nadbystrzycka Street, 20-618 Lublin, Poland
 
 
Publication date: 2017-09-03
 
 
Corresponding author
Frantisek Brumercik   

University of Zilina, Univerzitna 1, 01001 Zilina, Slovak Republic
 
 
Adv. Sci. Technol. Res. J. 2017; 11(3):87-93
 
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ABSTRACT
Large demand for bulk of sapphire optical products, which are widely used as illuminators, optical windows in aviation and aeronautics etc., generates the inquiry of effective production of high quality industrial crystals. The technology of crystal growth with the horizontal single crystal sapphire crystallization method is based on putting the crystal seed into the front of the crucible resistant to temperatures up to 2150°C. Without encompassment of the production technology of this special container made from thin molybdenum sheet is not realistic to consider the productive exploitation of horizontal crystallization systems in engineering practice. This paper presents the analysis of the possibility of the molybdenum sheet local resistance heating by its deep drawing to obtain better drawing properties by increased blank temperature.
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