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    Tytuł:
    Żeliwo ADI przeznaczone do pracy w warunkach obciążenia dynamicznego
    Austempered Ductile Iron to Work in the Conditions of Dynamic Load
    Autorzy:
    Sokolnicki, M.
    Guzik, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/382219.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    żeliwo ADI
    hartowanie
    udarność
    niskie temperatury
    ADI cast iron
    hardening
    toughness
    low temperature
    Opis:
    Żeliwo ADI posiada wiele odmian. Tematem artykułu jest najbardziej popularna odmiana ADI - (Austempered Ductile Iron) hartowanie z przemianą izotermiczną. Dzięki zastosowaniu w.w. rodzaju obróbki cieplnej uzyskuje się żeliwo o wyjątkowo korzystnych właściwościach wytrzymałościowych i plastycznych. Istotnym elementem procesu otrzymywania żeliwa wysokojakościowego jest aby w strukturze występował ausferryt.
    ADI makes an alternative to steel casting for constructors. High mechanical properties of ADI compare with parameters of quenched and tempered structural cast steel. A factor that is decisive for replacing steel casting with cast iron is elongation. For castings used in temperatures below 0oC a specified level of impact energy in negative temperature is needed. Impact energy in low temperature ausferritic cast iron was evaluated on samples without notch, with notch V and notch U. The research was carried out in temperatures +20oC, 0oC, -20oC, -40oC and -60oC. Two kinds of cast iron were evaluated: GJS-800-10 and GJS-1200-3 Grade. The value of temperature transition zone for high and low impact energy was evaluated. ADI cast iron was chosen, as one that can successfully replace the low-alloyed structural cast steel in low temperature conditions.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 4 spec.; 115-118
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Heat Treatment Parameters on the Toughness of Unalloyed Ausferritic Ductile Iron
    Autorzy:
    Guzik, E.
    Sokolnicki, M.
    Nowak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382323.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ductile cast iron
    heat treatment
    ADI
    toughness
    mechanical properties
    ausferrite
    żeliwo sferoidalne
    obróbka cieplna
    wytrzymałość
    właściwości mechaniczne
    Opis:
    Studies were carried out to determine the effect of heat treatment parameters on the plastic properties of unalloyed ausferritic ductile iron, such as the elongation and toughness at ambient temperature and at – 60°C. The effect of austenitizing temperature (850, 900 and 950°C) and ausferritizing time (5 - 180 min.) at a temperature of 360°C was also discussed. The next step covered investigations of a relationship that is believed to exist between the temperature (270, 300, 330, 360 and 390°C) and time (5, 10, 30, 60, 90, 120, 150, 180, 240 min.) of the austempering treatment and the mechanical properties of unalloyed ausferritic ductile iron, when the austenitizing temperature is 950°C. The “process window” was calculated for the ADI characterized by high toughness corresponding to the EN-GJS-800-10-RT and EN-GJS-900-8 grades according to EN-PN 1564 and to other high-strength grades included in this standard. Low-alloyed cast iron with the nodular graphite is an excellent starting material for the technological design of all the ausferritic ductile iron grades included in the PN-EN-1624 standard. The examined cast iron is characterized by high mechanical properties stable within the entire range of heat treatment parameters.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 79-84
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The structure and mechanical properties of pearlitic-ferritic vermicular cast iron
    Autorzy:
    Guzik, E.
    Kopyciński, D.
    Kleingartner, T.
    Sokolnicki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382402.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    żeliwo wermikularne
    osnowa pearlityczno ferrytyczna
    drut proszkowy
    właściwości mechaniczne
    vermicular cast iron
    pearlitic feritic matrix
    Tundish + Cored Wire method
    Opis:
    The results of studies on the use of magnesium alloy in modern Tundish + Cored Wire injection method for production of vermicular graphite cast irons were described. The injection of Mg Cored Wire length is a treatment method which can be used to process iron melted in an electric induction furnace. This paper describes the results of using a high-magnesium ferrosilicon alloy in cored wire for the production of vermicular graphite cast irons at the; Tundish + Cored Wire to be injected methods (PE) for pearlitic-ferritic matrix GJV with about 25 % ferrite content. The results of calculations and experiments have indicated the length of the Cored Wire to be injected basing on the initial sulfur content and weight of the treated melt. The paper presents a microstructure matrix and vermicular graphite in standard sample and different walled castings. The results of numerous trials have shown that the magnesium Tundish + PE Method process can produce high quality vermicular graphite irons under the specific industrial conditions of the above mentioned foundries.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 1; 33-36
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation vermicular graphite in thin and thick wall iron castings
    Autorzy:
    Kopyciński, D.
    Guzik, E.
    Nowak, A.
    Ronduda, M.
    Sokolnicki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382764.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    żeliwo wermikularne
    żeliwo sferoidalne
    tlen
    żeliwo
    vermicular cast iron
    ductile cast iron
    Tundish method
    oxygen
    cast iron
    Opis:
    The results of studies on the use of magnesium alloy in modern Tundish for production of vermicular graphite cast irons were described. This paper describes the results of using a low-magnesium ferrosilicon alloy for the production of vermicular graphite cast irons. The paper presents a vermicular (and nodular) graphite in different walled castings. The results of trials have shown that the magnesium Tundish process can produce high quality vermicular graphite irons under the specific industrial conditions of Foundries - Odlewnie Polskie S.A. in Starachowice. In this work describes too preliminary studies on the oxygen state in cast iron and their effect on graphite crystallization.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2; 41-44
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Althoff-Radtke Test Adapted for High Chromium Cast Iron
    Autorzy:
    Kopyciński, D.
    Siekaniec, D.
    Szczęsny, A.
    Sokolnicki, M.
    Nowak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382642.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mechanical properties
    casting defect
    hot crack
    high chromium cast iron
    właściwości mechaniczne
    wada odlewu
    pęknięcie gorące
    żeliwo wysokochromowe
    Opis:
    The paper presents results of the possibility of adapting the Althoff-Radtke test for High Chromium Cast Iron. The Althoff-Radtke test is a clump attempt used for steel. The Althoff-Radtke test has four different lengths of clamp which qualifies it as a test to quantitatively take into account different kinds of shrinkage ΔL. The length of the slot of the cracked corner and the length of each staple (50 - 350 mm) are the parameters tendency to cast cracks. Castings of white cast iron have a high tendency to hot cracking due to the large range of solidification temperatures, unfavorable kinetics parameters of shrinkage, and especially a lack of expansion before shrinkage. Shrinkage of high chromium white cast iron is similar to the shrinkage of cast steel, and is approximately 2%. Therefore it is important to test susceptibility to hot cracks. Research was carried out under industrial conditions. Four melts were performed, one of the initial chemical composition and the other three modified by different amounts of Fe-Ti, respectively, 0.25%, 0.5% and 0.75% Fe-Ti. The propensity for hot cracking was based on the observation of the dark surface in the corner of the sample. The study shows that the Althoff-Radtke test can be adapted to determine the tendency for hot cracking of high chromium cast iron. It should however be noted that the test results can not be compared with those for other alloys.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 61-64
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prediction of Microstructure in ADI Castings
    Autorzy:
    Guzik, E.
    Sokolnicki, M.
    Królikowski, M.
    Ronduda, M.
    Nowak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/353713.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    prediction of microstructure
    ADI castings
    results of the ADI microstructure examinations
    Opis:
    Tests were carried out on samples of low-alloy ductile iron with additions of Ni, Cu and Mo, subjected to austempering heat treatment. The samples were austenitized at 850, 900 and 950 °C, and then austempered at T = 210, 240, 270, 300 and 330 °C. The ausferritizing treatment was carried out in a salt bath for the time τ = 2 - 8 hours. Additionally, tests and studies covered samples subjected to the ausferritizing treatment at 270 °C with the time of holding castings in a bath from 2 to 24 hours. Evaluation covered the results of the ADI microstructure examinations and hardness measurements. The ADI matrix morphology was identified counting the average number of ausferrite plates and measuring their width and spacing. The regression equations HB = f (τ, T) and τ = f (HB, T) were derived to establish the, so-called, “process window”, allowing obtaining a priori the required microstructure of ADI and, consequently, the required mechanical properties, mainly hardness, shaping the functional properties of castings, abrasion wear resistance – in particular.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 2159-2164
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sokolnicki Michał Hubert, pseud.: H. Nowina, H. Nowinowski, Hubert Nowina, J.N. Bystram, K. M-cki, Konrad Leński, Lachim, Lachim (z Poznańskiego), Lech, Leszek, Leszek Czarny (Nowina), krypt.: H.n., (m.s) (1880-1967), działacz niepodległościowy, dyplomata, historyk
    Autorzy:
    Suleja, Włodzimierz.
    Zięba, Andrzej.
    Powiązania:
    Polski Słownik Biograficzny 2000, t. 40, z. 1, s. 80-87
    Data publikacji:
    2000
    Tematy:
    Sokoliński, Michał Hubert
    Sokolnicki Michał Hubert (1880-1867) biografia
    Legiony Polskie (1914-1917) biografie
    Polityka biografie Polska 20 w.
    Opis:
    W I wojnie światowej w Legionach Polskich. Bliski współpracownik J. Piłsudskiego. Poseł w Finlandii i Estonii (1920-1922), Danii (1931-1936), ambasador w Turcji (1936-1946).
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    Comparison of Optical Properties of Eu$\text{}^{3+}$ Ions in the Silica Gel Glasses Obtained by Different Preparation Techniques
    Autorzy:
    Legendziewicz, J.
    Stręk, W.
    Sokolnicki, J.
    Keller, B.
    Borzechowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1945686.pdf
    Data publikacji:
    1996-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.20.Wc
    78.55.Hx
    71.55.Jv
    Opis:
    Silica sol-gel glasses doped with Eu$\text{}^{3+}$ ions were obtained by different preparation techniques. The absorption, emission and excitation spectra of the obtained glasses were measured in the range of 77-300 K. The energy level diagrams of Eu$\text{}^{3+}$ ions were derived. An intensity analysis of f-f transitions was performed. In particular, polymeric structure behaviour of europium compounds entrapped in silica gels glasses was temperature controlled during the preparation of glasses. Their optical properties were investigated.
    Źródło:
    Acta Physica Polonica A; 1996, 90, 2; 461-468
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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