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Wyszukujesz frazę "Bieroński, M." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Evaluation of the Mechanical Properties of Gray Cast Iron Using Electrical Resistivity Measurement
Autorzy:
Bieroński, M.
Krasa, O.
Koza, M.
Książek, D.
Kuś, R.
Powiązania:
https://bibliotekanauki.pl/articles/380834.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
resistance
grey cast iron
tensile strength
NDT method
electrical resistivity
odporność
żeliwo szare
wytrzymałość na rozciąganie
metoda NDT
Opis:
In this paper an attempt to determine the relationship between the electrical resistivity and the tensile strength and hardness of cast iron of carbon equivalent in the range from 3.93% to 4.48%. Tests were performed on the gray cast iron for 12 different melts with different chemical composition. From one melt poured 6 samples. Based on the study of mechanical and electro-resistive determined variation characteristics of tensile strength, hardness and resistivity as a function of the carbon equivalent. Then, regression equations were developed as power functions describing the relationship between the resistivity of castings and their tensile strength and hardness. It was found a high level of regression equations to measuring points, particularly with regard to the relationship Rm=f(ρ). The obtained preliminary results indicate the possibility of application of the method of the resistance to rapid diagnostic casts on the production line, when we are dealing with repeatable production, in this case non variable geometry of the product for which it has been determinated before a regression equation.
Źródło:
Archives of Foundry Engineering; 2016, 16, 4; 29-32
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examination of Electrical Resistance of Carburizers Used for Cast Iron Production
Autorzy:
Książek, D.
Koza, M.
Bieroński, M.
Krasa, O.
Kuś, R.
Powiązania:
https://bibliotekanauki.pl/articles/381730.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cast iron
foundry material
carburizer
electrical resistance
żeliwo
materiał odlewniczy
nawęglacz
opór elektryczny
Opis:
The publication presents the results of examination of selected carburizers used for cast iron production with respect to their electric resistance. Both the synthetic graphite carburizers and petroleum coke (petcoke) carburizers of various chemical composition were compared. The relationships between electrical resistance of tested carburizers and their quality were found. The graphite carburizers exhibited much better conductivity than the petcoke ones. Resistance characteristics were different for the different types of carburizers. The measurements were performed according to the authors’ own method based on recording the electric current flow through the compressed samples. The samples of the specified diameter were put under pressure of the gradually increased value (10, 20, 50, 60, and finally 70 bar), each time the corresponding value of electric resistance being measured with a gauge of high accuracy, equal to 0.1μΩ. The higher pressure values resulted in the lower values of resistance. The relation between both the thermal conductance and the electrical conductance (or the resistance) is well known and mentioned in the professional literature. The results were analysed and presented both in tabular and, additionally, in graphic form.
Źródło:
Archives of Foundry Engineering; 2016, 16, 4; 65-68
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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