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Local resistance of heating molybdenum sheet in a test device

Mitka M., Bastovansky R., Brumercik F., Ignaciuk P.

Advances in Science and Technology. Research Journal

2017

Vol. 11, no 3

87--93

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 local resistance of molybdenum sheet heating by its deep drawing to obtain better drawing properties by increased blank temperature.

Application of hydraulic circuit in mechatronic systems

Tropp M., Bastovansky R.

Journal of Technology and Exploitation in Mechanical Engineering

2016

Vol. 2, nr 1

5--10

This paper focuses on the calculations of basic variables of the hydrostatic circuits in the mechatronic systems. These calculations are important for machines used for forming materials by means of great forces, e.g. hydraulic press. Due to differences in equipment design, lack of a universal method of calculation is noticeable. It is necessary to determine the coefficients required for the calculations in an experimental way.

Tematem niniejszego artykułu jest obliczanie zmiennych podstawowych w obwodach hydrostatycznych w systemach mechatronicznych. Obliczenia te są wykonywane w mechatronice i wykorzystywane w maszynach do formowania materiałów za pomocą wielkich sił (prasa hydrauliczna). Zauważalny jest brak uniwersalnej metody obliczeń ze względu na różnice w konstrukcji urządzeń, stąd też konieczne jest wyznaczanie potrzebnych do obliczeń współczynników w sposób eksperymentalny.