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Wyszukujesz frazę "rozkład temperatury" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Evaluation of the Temperature Distribution of a Die Casting Mold of X38CrMoV5_1 Steel
Autorzy:
Majernik, J.
Podařil, M.
Powiązania:
https://bibliotekanauki.pl/articles/380463.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
casting process
simulation
temperature distribution
mould material
proces odlewania
symulacja
rozkład temperatury
masa odlewnicza
Opis:
Relatively cold die material comes into contact with the substantially higher temperature melt during the casting cycle, causing high thermal fluctuations resulting into the cyclic change of thermal field. The presented contribution is devoted to the assessment of the impact of temperature distribution on individual zones in the die volume. The evaluated parameter is the die temperature. It was monitored at two selected locations with the 1 mm, 2 mm, 5 mm, 10 mm and 20 mm spacing from the die cavity surface to the volume of cover die and ejector die. As a comparative parameter, the melt temperature in the middle of the runner above the measuring point and the melt temperature close to the die face were monitored. Overall, the temperature was monitored in 26 evaluation points. The measurement was performed using the Magmasoft simulation software. The input settings of the casting cycle in the simulation were identical to those in real operation. It was found, that the most heavily stressed die zones by temperature were within the 20 mm from the die face. Above this distance, the heat supplied by the melt passes gradually into the entire die mass without significant temperature fluctuations. To verify the impact of the die cooling on the thermal field, a tempering system was designed to ensure different heat dissipation conditions in individual locations. At the end of the contribution, the measures proposals to reduce the high change of thermal field of dies resulting from the design of the tempering channel are presented. These proposals will be experimentally verified in the following research work.
Źródło:
Archives of Foundry Engineering; 2019, 2; 107-112
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of phase-change boundary position in continuous casting
Autorzy:
Ivanova, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/380559.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
information technology
foundry industry
mathematical modeling
temperature distribution
Stefan condition
phase change boundary
continuous casting
krzepnięcie stopu
technologia informacyjna
przemysł odlewniczy
modelowanie matematyczne
rozkład temperatury
warunek Stefana
granica międzyfazowa
odlewanie ciągłe
Opis:
The problem of determination of the phase-change boundary position at the mathematical modeling of continuous ingot temperature field is considered. The description of the heat transfer process takes into account the dependence of the thermal physical characteristics on the temperature, so that the mathematical model is based on the nonlinear partial differential equations. The boundary position between liquid and solid phase is given by the temperatures equality condition and the Stefan condition for the two-dimensional case. The new method of calculation of the phase-change boundary position is proposed. This method based on the finite-differences with using explicit schemes and on the iteration method of solving of non-linear system equations. The proposed method of calculation is many times faster than the real time. So that it amenable to be used for model predictive control of continuous semifinished product solidification.
Źródło:
Archives of Foundry Engineering; 2013, 13, 4; 57-62
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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