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3. Dynamics of gravitational field within a wave front and thermodynamics of black holes

Author

Czuchry, E., Jezierski, J., and Kijowski, J.

Subjects
General Relativity and Quantum Cosmology
Abstract

Hamiltonian dynamics of gravitational field contained in a spacetime region with boundary $S$ being a null-like hypersurface (a wave front) is discussed. Complete Hamiltonian formula for the dynamics (with no surface integrals neglected) is derived. A quasi-local proof of the first law of black holes thermodynamics is obtained as a consequence, in case when $S$ is a non-expanding horizon. The zeroth law and Penrose inequalities are discussed from this point of view., Comment: 14 pages, 2 figures

Published
2004
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4. Local approach to thermodynamics of black holes

Author

Czuchry, E., Jezierski, J., and Kijowski, J.

Subjects
General Relativity and Quantum Cosmology
Abstract

Hamiltonian description of gravitational field contained in a spacetime region with boundary $S$ being a null-like hypersurface (a wave front) is discussed. Complete generating formula for the Hamiltonian dynamics (with no surface integrals neglected) is presented. A quasi-local proof of the 1-st law of black holes thermodynamics is obtained as a consequence, in case when $S$ is a non-expanding horizon. The 0-th law and Penrose inequalities are discussed from this point of view., Comment: 10 pages, to appear in Proceedings of the Seventh Hungarian Relativity Workshop

Published
2004

5. The Trautman-Bondi mass of initial data sets

Author

Chrusciel, P. T., Jezierski, J., and Leski, S.

Subjects
General Relativity and Quantum Cosmology
Abstract

We give a definition of mass for conformally compactifiable initial data sets. The asymptotic conditions are compatible with existence of gravitational radiation, and the compactifications are allowed to be polyhomogeneous. We show that the resulting mass is a geometric invariant, and we prove positivity thereof in the case of a spherical conformal infinity. When R(g) - or, equivalently, the trace of the extrinsic curvature tensor - tends to a negative constant to order one at infinity, the definition is expressed purely in terms of three-dimensional or two-dimensional objects., Comment: latex2e, 51 pages in A4, minor typos corrected

Published
2003

6. Asymptotic Conformal Yano--Killing Tensors for Schwarzschild Metric

Author

Jezierski, J.

Subjects
High Energy Physics - Theory, General Relativity and Quantum Cosmology
Abstract

The asymptotic conformal Yano--Killing tensor proposed in J. Jezierski, On the relation between metric and spin-2 formulation of linearized Einstein theory [GRG, in print (1994)] is analyzed for Schwarzschild metric and tensor equations defining this object are given. The result shows that the Schwarzschild metric (and other metrics which are asymptotically ``Schwarzschildean'' up to O(1/r^2) at spatial infinity) is among the metrics fullfilling stronger asymptotic conditions and supertranslations ambiguities disappear. It is also clear from the result that 14 asymptotic gravitational charges are well defined on the ``Schwarzschildean'' background., Comment: 8 pages, latex, no figures

Published
1994
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9. Melting of Grey Cast Iron Based on Steel Scrap Using Silicon Carbide

Author

Stojczew A., Janerka K., Jezierski J., Szajnar J., and Pawlyta M.

Subjects
Synthetic cast iron, Grey cast iron, Silicon carbide, Ferrous alloys carburization, Cast iron microstructure, Technology (General), T1-995
Abstract

The paper presents the issue of synthetic cast iron production in the electric induction furnace exclusively on the steel scrap base. Silicon carbide and synthetic graphite were used as carburizers. The carburizers were introduced with solid charge or added on the liquid metal surface. The chemical analysis of the produced cast iron, the carburization efficiency and microstructure features were presented in the paper. It was stated that ferrosilicon can be replaced by silicon carbide during the synthetic cast iron melting process. However, due to its chemical composition (30% C and 70% Si) which causes significant silicon content in iron increase, the carbon deficit can be partly compensated by the carburizer introduction. Moreover it was shown that the best carbon and silicon assimilation rate is obtained where the silicon carbide is being introduced together with solid charge. When it is thrown onto liquid alloy surface the efficiency of the process is almost two times less and the melting process lasts dozen minutes long. The microstructure of the cast iron produced with the silicon carbide shows more bulky graphite flakes than inside the microstructure of cast iron produced on the pig iron base.

Published
2014
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10. Theoretical and Practical Aspects of Pneumatic Powder Injection into Liquid Alloys with a Non-Submerged Lance

Author

Jezierski J., Janerka K., and Stawarz M.

Subjects
Powder Injection, Injection Lance, Pneumatic Conveying, Cast Iron Treatment, High Speed Camera, Mining engineering. Metallurgy, TN1-997, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Technologia wdmuchiwania proszków do ciekłego metalu jest znana od kilkudziesięciu lat i z powodzeniem stosowana w różnorodnych procesach metalurgicznych i odlewniczych. Zdecydowanie najczęściej stosowane jest rozwiązanie z użyciem lancy zanurzonej pod lustro obrabianego stopu, jako łatwiejsze choć nie pozbawione wielu istotnych wad. W pracy zaprezentowano zakończone kompleksowe badania autorów nad procesem wdmuchiwania proszków bez zanurzania lancy w kąpieli. Przedstawiono nowe spojrzenie na tzw. „kąt stożka rozejścia strumienia” i jego wpływ na skuteczność procesu, przeanalizowano zagadnienie tzw. „skutecznego promienia strumienia” proponowanego przez wcześniejszych badaczy oraz opisano wyniki badań symulacyjnych oraz eksperymentów wdmuchiwania, zarejestrowanych z użyciem kamery do szybkich zdjęć. Podjęto się także ostatecznego porównania rozwiązań lancy zwykłej i opracowanej przez autorów tzw. „lancy kołnierzowej” wskazując na zalety tej drugiej, jako narzędzia do obróbki niewielkich objętości ciekłych stopów np. w procesach wprowadzania żelazostopów czy też modyfikacji.

Published
2014
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11. TECHNOLOGY OF PRODUCTION OF MOLD FILLING MATERIAL FOR SPECIFIC PURPOSES IN THE FIELD OF METALLIC FOAM CASTING.

Author

KROUPOVÁ, I., BAŠISTOVÁ, M., LICHÝ, P., MERTA, V., RADKOVSKÝ, F., and JEZIERSKI, J.

Subjects
METAL foams, MOLDING materials, FILLER materials, LIQUID metals, HOLDER spaces, INJECTION molding, FOAM
Abstract

This paper describes the technology for the production of precursors (space holder material) used to form the complex internal structure of cast metal foam. The precursor material must exhibit sufficient refractoriness, resist contact with liquid metal and at the same time should exhibit good collapsibility after casting. With regard to the greening of foundry production, the focus of this paper was on materials that could exhibit the above properties and at the same time do not have a negative impact on the environment. In this paper, the technology for the production of spherical precursors from a self-hardening mixture with a geopolymer-based binder system is described and verified. The motivation for the choice of material and all the sub-steps of the process - molding into the core box, tumbling, including the necessary accompanying tests of the mechanical properties of the core mixture being verified - are described. [ABSTRACT FROM AUTHOR]

Published
2023
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13. VARIOUS ASPECTS OF APPLICATION OF SILICON CARBIDE IN THE PROCESS OF CAST IRON MELTING.

Author

JANERKA, K., KOSTRZEWSKI, Ł., STAWARZ, M., JEZIERSKI, J., and SZAJNAR, J.

Subjects
SILICON carbide, NODULAR iron, IRON founding, CAST-iron, ELECTRIC furnaces, PIG iron, ELECTRIC displacement
Abstract

The article discusses benefits associated with the use of silicon carbide in the process of melting gray cast iron and ductile cast iron in induction electric furnaces. It presents the analysis of the impact of various charge materials and the addition of a variable amount of SiC and FeSi to the fixed charge when melting cast iron of grades GJS 400-15 and GJS 500-7 on mechanical properties and microstructure. Moreover, the article includes an analysis of the efficiency of carburization and the increase in the content of silicon during the application of SiC. The article also presents the results of the study of primary modification using silicon carbide at the minimum temperature of Temin eutectic and Tsol solidus. Based on analysis of the literature, conducted research, and calculations, it was found that the addition of silicon carbide has a beneficial impact on the properties of melted cast iron. The addition of SiC in the charge increases the content of C and Si without increasing the amount of contaminations. The addition of SiC at reduced pig iron presence in the charge decreases production costs, while the use of SiC as an inoculant increases both Temin and Tsol, which is beneficial from the point of view of cast iron nucleation. [ABSTRACT FROM AUTHOR]

Published
2022
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16. The effect of the carburiser quality on the cast iron recarburisation process

Author

Janerka, K., Bartocha, D., Jezierski, J., and Szajnar, J.

Subjects
Iron industry -- Research, Iron industry -- Equipment and supplies, Carburization -- Research, Business, Metals, metalworking and machinery industries
Abstract

The impact of carburizers on the production of synthetic cast iron production is examined. The most common carburizers used in iron production include natural graphite, petroleum coke and anthracite. Carbon assimilation level has been found to decrease with the proper selection of carburizers.

Published
2010

17. Scanning Electron Microscopy as a Tool for Castings Quality Analysis.

Author

Jezierski, J., Dojka, M., Stawarz, M., and Dojka, R.

Subjects
SCANNING electron microscopy, NODULAR iron, ULTRASONIC testing, CAST-iron, REQUIREMENTS engineering, ELECTRON microscopy
Abstract

Nowadays, the best castings' manufacturers have to meet very demanding requirements and specifications applicable to mechanical properties and other characteristics. To fulfill those requirements, more and more sophisticated methods are being used to analyze the internal quality of castings. In many cases, the commonly used Non-Destructive Methods, like X-ray or ultrasonic testing, are not enough to ensure precise and unequivocal evaluation. Especially, when the properties of the casting only slightly fail the specification and the reasons for such failures are very subtle, thus difficult to find without the modern techniques. The paper presents some aspects of such an approach with the use of Scanning Electron Microscopy (SEM) to analyze internal defects that can critically decrease the performance of castings. The paper presents the so-called bifilm defects in ductile and chromium cast iron, near-surface corrosion caused by sulfur, micro-shrinkage located under the risers, lustrous carbon precipitates, and other microstructure features. The method used to find them, the results of their analysis, and the possible causes of the defects are presented. The conclusions prove the SEM is now a powerful tool not only for scientists but it is more and more often present in the R&D departments of the foundries. [ABSTRACT FROM AUTHOR]

Published
2022
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19. A New Technology of TRIAD Cement-Free Castables - Practical Aspects.

Author

Cygan, B., Dorula, J., and Jezierski, J.

Subjects
NODULAR iron, POROUS materials, HIGH strength concrete, REFRACTORY materials, PROBLEM solving
Abstract

The article presents the new technology of the refractory materials used for the ladles and pouring devices. The aim for solving the majority of the problems that originated from the refractory lining was to develop the group of cement-free TRIAD products by Vesuvius company. The cement-free setting system in the TRIAD products eliminates calcium oxide (CaO) that occurs in low and extra low cement concretes resulting in its higher strength at higher temperatures. The features of the new cement-free castables were described. One of the most unique features of this technology is the porous material structure. Small venting microchannels are formed during the concrete setting process. These micro-channels allow for removing water vapor from the lining without affecting its refractory properties. On the other hand, the diameter of pores is so low that it disallows the penetration of slag and metal into the lining, extends its operating life at the same time facilitates cleaning and removing build-ups. The procedure of the preparation of these materials, as well as the method of building of the lining, were presented. An example of the practical use of these materials in the ductile cast iron foundry was presented, showing the advantages of the new refractory materials over the traditional ones. [ABSTRACT FROM AUTHOR]

Published
2021
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25. Poster Session 2 : Monday 4 May 2015, 08

Author

Bouyoucef, S E, Uusitalo, V, Kamperidis, V, De Graaf, M A, Maaniitty, T, Stenstrom, I, Broersen, A, Scholte, A J, Saraste, A, Bax, J J, Knuuti, J, Furuhashi, T, Moroi, M, Awaya, T, Masai, H, Minakawa, M, Kunimasa, T, Fukuda, H, Sugi, K, Berezin, A, Kremzer, A, Clerc, O F, Kaufmann, B, Possner, M, Liga, R, Vontobel, J, Mikulicic, F, Graeni, C, Benz, D C, Kaufmann, P A, Buechel, R B, Ferreira, Mjv, Cunha, M J, Albuquerque, A, Ramos, D, Costa, G, Lima, J, Pego, M, Peix, A, Cisneros, L, Cabrera, L O, Padron, K, Rodriguez, L, Heres, F, Carrillo, R, Mena, E, Fernandez, Y, Huizing, E D, Van Dijk, J D, Van Dalen, J A, Timmer, J R, Ottervanger, J P, Slump, C H, Jager, P L, Venuraju, S, Jeevarethinam, A, Yerramasu, A, Atwal, S, Mehta, V S, Lahiri, A, Arjonilla Lopez, A, Calero Rueda, M J, Gallardo, G, Fernandez-Cuadrado, J, Hernandez Aceituno, D, Sanchez Hernandez, J, Yoshida, H, Mizukami, A, Matsumura, A, Smettei, O, Abazid, R, Sayed, S, Mlynarska, A, Mlynarski, R, Golba, K, Sosnowski, M, Winther, S, Svensson, M, Jorgensen, H S, Bouchelouche, K, Gormsen, L C, Holm, N R, Botker, H E, Ivarsen, P R, Bottcher, M, Cortes, C M, Aramayo G, E N, Daicz, M, Casuscelli, J F, Alaguibe, E D, Neira Sepulveda, A, Cerda, M, Ganum, G E, Embon, M, Vigne, J, Enilorac, B, Lebasnier, A, Valancogne, L, Peyronnet, D, Manrique, A, Agostini, D, Menendez, D, Rajpal, S, Kocherla, C, Acharya, M, Reddy, P, Sazonova, I, Ilushenkova, Yun, Batalov, R E, Rogovskaya, Y V, Lishmanov, Y B, Popov, S V, Varlamova, N V, Prado Diaz, S, Jimenez Rubio, C, Gemma, D, Refoyo Salicio, E, Valbuena Lopez, S C, Moreno Yanguela, M, Torres, M, Fernandez-Velilla, M, Lopez-Sendon, J L, Guzman Martinez, G, Puente, A, Rosales, S, Martinez, C, Cabada, M, Melendez, G M, Ferreira, R, Gonzaga, A, Santos, J, Vijayan, S, Smith, Smg, Smith, M, Muthusamy, R, Takeishi, Y, Oikawa, M, Goral, J L, Napoli, J, Montana, O R, Damico, A C, Quiroz, M C, Damico, A E, Forcada, P J, Schmidberg, J M, Zucchiatti, N E, Olivieri, D B, Dumo, A, Ruano, S, Rakhit, R, Davar, J, Nair, D, Cohen, M, Darko, D, Yokota, S, Maas, Ahe, Mouden, M, Knollema, S, Sanja Mazic, S M, Lazovic, B, Marina Djelic, Mdj, Jelena Suzic Lazic, J S, Tijana Acimovic, T A, Milica Deleva, M D, Vesnina, Z H, Zafrir, N, Bental, T, Mats, I, Solodky, A, Gutstein, A, Hasid, Y, Belzer, D, Kornowski, R, Ben Said, Rim, Ben Mansour, N, Ibn Haj Amor, H, Chourabi, C, Hagui, A, Fehri, W, Hawala, H, Shugushev, Z, Patrikeev, A, Maximkin, D, Chepurnoy, A, Kallianpur, V, Mambetov, A, Dokshokov, G, Teresinska, A, Wozniak, O, Maciag, A, Wnuk, J, Dabrowski, A, Czerwiec, A, Jezierski, J, Biernacka, K, Robinson, J, Prosser, J, Cheung, Gsm, Allan, S, Mcmaster, G, Reid, S, Tarbuck, A, Martin, W, Queiroz, R C, Falcao, A, Giorgi, McP, Imada, R, Nogueira, S A, Chalela, W A, Kalil Filho, R, Meneghetti, W A, Matveev, V V, Bubyenov, A S, Podzolkov, V I, Baranovich, V, Faibushevich, A, Kolzhecova, Y, Volkova, O, Fernandez, J, Lopez, G, Dondi, M, Paez, D, Butcher, Cjt, Reyes, E, Al-Housni, M B, Green, R, Santiago, H, Ghiotto, F, Hinton-Taylor, S, Pottle, A, Mason, M, Underwood, S R, Casans Tormo, I, Diaz-Exposito, R, Plancha-Burguera, E, Elsaban, K, Alsakhri, Hijji, Yoshinaga, K, Ochi, N, Tomiyama, Y, Katoh, C, Inoue, M, Nishida, M, Suzuki, E, Manabe, O, Ito, Y M, Tamaki, N, Tahilyani, A, Jafary, Fahim, Ho Hee Hwa, H H, Ozdemir, S, Kirilmaz, B, Barutcu, A, Tan, Y Z, Celik, F, Sakgoz, S, Cabada Gamboa, M, Puente Barragan, A, Morales Vitorino, N, Medina Servin, M A, Hindorf, C, Akil, S, Hedeer, F, Jogi, J, Engblom, H, Martire, V D, Pis Diez, E R, Martire, M V, Portillo, D O, Hoff, C M, Balche, A, Majgaard, J, Tolbod, L P, Harms, H J, Soerensen, J, Froekiaer, J, Nudi, F, Neri, G, Procaccini, E, Pinto, A, Vetere, M, Biondi-Zoccai, G, Soares, J, Do Val, R, Oliveira, M A, Meneghetti, J C, Tekabe, Y, Anthony, T, Li, Q, Schmidt, A M, Johnson, L, Groenman, M, Tarkia, M, Kakela, M, Halonen, P, Kiviniemi, T, Pietila, M, Yla-Herttuala, S, Roivainen, A, Nekolla, S, Swirzek, S, Higuchi, T, Reder, S, Schachoff, S, Bschorner, M, Laitinen, I, Robinson, S, Yousefi, B, Schwaiger, M, Kero, Tanja, Lindsjo, L, Antoni, Gunnar, Westermark, P, Carlson, K, Wikstrom, G, Sörensen, Jens, Lubberink, Mark, Rouzet, F, Cognet, T, Guedj, K, Morvan, M, El Shoukr, F, Louedec, L, Choqueux, C, Nicoletti, A, Le Guludec, D, Jimenez-Heffernan, A, Munoz-Beamud, F, Sanchez De Mora, E, Borrachero, C, Salgado, C, Ramos-Font, C, Lopez-Martin, J, Hidalgo, M L, Lopez-Aguilar, R, Soriano, E, Okizaki, A, Nakayama, M, Ishitoya, S, Sato, J, Takahashi, K, Burchert, I, Caobelli, F, Wollenweber, T, Nierada, M, Fulsche, J, Dieckmann, C, Bengel, F M, Shuaib, S, Mahlum, D, Port, S, Refoyo, E, Cuesta, E, Guzman, G, Lopez, T, Valbuena, S, Del Prado, S, Moreno, M, Harbinson, M, Donnelly, L, Einstein, A J, Johnson, L L, Deluca, A J, Kontak, A C, Groves, D W, Stant, J, Pozniakoff, T, Cheng, B, Rabbani, L E, Bokhari, S, Schuetze, C, Aguade-Bruix, S, Pizzi, M N, Romero-Farina, G, Terricabras, M, Villasboas, D, Castell-Conesa, J, Candell-Riera, J, Brunner, S, Gross, L, Todica, A, Lehner, S, Di Palo, A, Niccoli Asabella, A, Magarelli, C, Notaristefano, A, Ferrari, C, Rubini, G, Sellem, A, Melki, S, Elajmi, W, Hammami, H, Ziadi, M C, Montero, J, Ameriso, J L, Villavicencio, R L, Benito Gonzalez, T F, Mayorga Bajo, A, Gutierrez Caro, R, Rodriguez Santamarta, M, Alvarez Roy, L, Martinez Paz, E, Barinaga Martin, C, Martin Fernandez, J, Alonso Rodriguez, D, Iglesias Garriz, I, Rosillo, S, Taleb, S, Cherkaoui Salhi, G, Regbaoui, Y, Ait Idir, M, Guensi, A, Martin Lopez, C E, Castano Ruiz, M, Bouyoucef, S E, Uusitalo, V, Kamperidis, V, De Graaf, M A, Maaniitty, T, Stenstrom, I, Broersen, A, Scholte, A J, Saraste, A, Bax, J J, Knuuti, J, Furuhashi, T, Moroi, M, Awaya, T, Masai, H, Minakawa, M, Kunimasa, T, Fukuda, H, Sugi, K, Berezin, A, Kremzer, A, Clerc, O F, Kaufmann, B, Possner, M, Liga, R, Vontobel, J, Mikulicic, F, Graeni, C, Benz, D C, Kaufmann, P A, Buechel, R B, Ferreira, Mjv, Cunha, M J, Albuquerque, A, Ramos, D, Costa, G, Lima, J, Pego, M, Peix, A, Cisneros, L, Cabrera, L O, Padron, K, Rodriguez, L, Heres, F, Carrillo, R, Mena, E, Fernandez, Y, Huizing, E D, Van Dijk, J D, Van Dalen, J A, Timmer, J R, Ottervanger, J P, Slump, C H, Jager, P L, Venuraju, S, Jeevarethinam, A, Yerramasu, A, Atwal, S, Mehta, V S, Lahiri, A, Arjonilla Lopez, A, Calero Rueda, M J, Gallardo, G, Fernandez-Cuadrado, J, Hernandez Aceituno, D, Sanchez Hernandez, J, Yoshida, H, Mizukami, A, Matsumura, A, Smettei, O, Abazid, R, Sayed, S, Mlynarska, A, Mlynarski, R, Golba, K, Sosnowski, M, Winther, S, Svensson, M, Jorgensen, H S, Bouchelouche, K, Gormsen, L C, Holm, N R, Botker, H E, Ivarsen, P R, Bottcher, M, Cortes, C M, Aramayo G, E N, Daicz, M, Casuscelli, J F, Alaguibe, E D, Neira Sepulveda, A, Cerda, M, Ganum, G E, Embon, M, Vigne, J, Enilorac, B, Lebasnier, A, Valancogne, L, Peyronnet, D, Manrique, A, Agostini, D, Menendez, D, Rajpal, S, Kocherla, C, Acharya, M, Reddy, P, Sazonova, I, Ilushenkova, Yun, Batalov, R E, Rogovskaya, Y V, Lishmanov, Y B, Popov, S V, Varlamova, N V, Prado Diaz, S, Jimenez Rubio, C, Gemma, D, Refoyo Salicio, E, Valbuena Lopez, S C, Moreno Yanguela, M, Torres, M, Fernandez-Velilla, M, Lopez-Sendon, J L, Guzman Martinez, G, Puente, A, Rosales, S, Martinez, C, Cabada, M, Melendez, G M, Ferreira, R, Gonzaga, A, Santos, J, Vijayan, S, Smith, Smg, Smith, M, Muthusamy, R, Takeishi, Y, Oikawa, M, Goral, J L, Napoli, J, Montana, O R, Damico, A C, Quiroz, M C, Damico, A E, Forcada, P J, Schmidberg, J M, Zucchiatti, N E, Olivieri, D B, Dumo, A, Ruano, S, Rakhit, R, Davar, J, Nair, D, Cohen, M, Darko, D, Yokota, S, Maas, Ahe, Mouden, M, Knollema, S, Sanja Mazic, S M, Lazovic, B, Marina Djelic, Mdj, Jelena Suzic Lazic, J S, Tijana Acimovic, T A, Milica Deleva, M D, Vesnina, Z H, Zafrir, N, Bental, T, Mats, I, Solodky, A, Gutstein, A, Hasid, Y, Belzer, D, Kornowski, R, Ben Said, Rim, Ben Mansour, N, Ibn Haj Amor, H, Chourabi, C, Hagui, A, Fehri, W, Hawala, H, Shugushev, Z, Patrikeev, A, Maximkin, D, Chepurnoy, A, Kallianpur, V, Mambetov, A, Dokshokov, G, Teresinska, A, Wozniak, O, Maciag, A, Wnuk, J, Dabrowski, A, Czerwiec, A, Jezierski, J, Biernacka, K, Robinson, J, Prosser, J, Cheung, Gsm, Allan, S, Mcmaster, G, Reid, S, Tarbuck, A, Martin, W, Queiroz, R C, Falcao, A, Giorgi, McP, Imada, R, Nogueira, S A, Chalela, W A, Kalil Filho, R, Meneghetti, W A, Matveev, V V, Bubyenov, A S, Podzolkov, V I, Baranovich, V, Faibushevich, A, Kolzhecova, Y, Volkova, O, Fernandez, J, Lopez, G, Dondi, M, Paez, D, Butcher, Cjt, Reyes, E, Al-Housni, M B, Green, R, Santiago, H, Ghiotto, F, Hinton-Taylor, S, Pottle, A, Mason, M, Underwood, S R, Casans Tormo, I, Diaz-Exposito, R, Plancha-Burguera, E, Elsaban, K, Alsakhri, Hijji, Yoshinaga, K, Ochi, N, Tomiyama, Y, Katoh, C, Inoue, M, Nishida, M, Suzuki, E, Manabe, O, Ito, Y M, Tamaki, N, Tahilyani, A, Jafary, Fahim, Ho Hee Hwa, H H, Ozdemir, S, Kirilmaz, B, Barutcu, A, Tan, Y Z, Celik, F, Sakgoz, S, Cabada Gamboa, M, Puente Barragan, A, Morales Vitorino, N, Medina Servin, M A, Hindorf, C, Akil, S, Hedeer, F, Jogi, J, Engblom, H, Martire, V D, Pis Diez, E R, Martire, M V, Portillo, D O, Hoff, C M, Balche, A, Majgaard, J, Tolbod, L P, Harms, H J, Soerensen, J, Froekiaer, J, Nudi, F, Neri, G, Procaccini, E, Pinto, A, Vetere, M, Biondi-Zoccai, G, Soares, J, Do Val, R, Oliveira, M A, Meneghetti, J C, Tekabe, Y, Anthony, T, Li, Q, Schmidt, A M, Johnson, L, Groenman, M, Tarkia, M, Kakela, M, Halonen, P, Kiviniemi, T, Pietila, M, Yla-Herttuala, S, Roivainen, A, Nekolla, S, Swirzek, S, Higuchi, T, Reder, S, Schachoff, S, Bschorner, M, Laitinen, I, Robinson, S, Yousefi, B, Schwaiger, M, Kero, Tanja, Lindsjo, L, Antoni, Gunnar, Westermark, P, Carlson, K, Wikstrom, G, Sörensen, Jens, Lubberink, Mark, Rouzet, F, Cognet, T, Guedj, K, Morvan, M, El Shoukr, F, Louedec, L, Choqueux, C, Nicoletti, A, Le Guludec, D, Jimenez-Heffernan, A, Munoz-Beamud, F, Sanchez De Mora, E, Borrachero, C, Salgado, C, Ramos-Font, C, Lopez-Martin, J, Hidalgo, M L, Lopez-Aguilar, R, Soriano, E, Okizaki, A, Nakayama, M, Ishitoya, S, Sato, J, Takahashi, K, Burchert, I, Caobelli, F, Wollenweber, T, Nierada, M, Fulsche, J, Dieckmann, C, Bengel, F M, Shuaib, S, Mahlum, D, Port, S, Refoyo, E, Cuesta, E, Guzman, G, Lopez, T, Valbuena, S, Del Prado, S, Moreno, M, Harbinson, M, Donnelly, L, Einstein, A J, Johnson, L L, Deluca, A J, Kontak, A C, Groves, D W, Stant, J, Pozniakoff, T, Cheng, B, Rabbani, L E, Bokhari, S, Schuetze, C, Aguade-Bruix, S, Pizzi, M N, Romero-Farina, G, Terricabras, M, Villasboas, D, Castell-Conesa, J, Candell-Riera, J, Brunner, S, Gross, L, Todica, A, Lehner, S, Di Palo, A, Niccoli Asabella, A, Magarelli, C, Notaristefano, A, Ferrari, C, Rubini, G, Sellem, A, Melki, S, Elajmi, W, Hammami, H, Ziadi, M C, Montero, J, Ameriso, J L, Villavicencio, R L, Benito Gonzalez, T F, Mayorga Bajo, A, Gutierrez Caro, R, Rodriguez Santamarta, M, Alvarez Roy, L, Martinez Paz, E, Barinaga Martin, C, Martin Fernandez, J, Alonso Rodriguez, D, Iglesias Garriz, I, Rosillo, S, Taleb, S, Cherkaoui Salhi, G, Regbaoui, Y, Ait Idir, M, Guensi, A, Martin Lopez, C E, and Castano Ruiz, M

Published
2015
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26. Heat Treatment of the SiMo Iron Castings - Case Study in the Automotive Foundry.

Author

Cygan, B., Stawarz, M., and Jezierski, J. R.

Subjects
IRON founding, HEAT treatment of cast-iron, MANUFACTURING processes, AUTOMOTIVE engineering, WEAR resistance
Abstract

Silicon - molybdenum cast iron commonly called SiMo due to its unique properties has becoming more and more interesting engineering material. The history and development of this alloy is relatively long but, due to the significant difficulties during the manufacturing process resulting in the lower final quality than expected, it has not been applied to often in practice. The biggest challenge is its brittleness as a result of the carbides precipitations. During last few years, thanks to the many important researches made and the general foundry technology development, the interest in SiMo iron has been rapidly growing, especially for the castings for heavy duty applications like corrosion, high temperature and wear abrasion resistant parts. In the article the heat treatment attempts to improve the microstructure of SiMo castings has been presented. The goal was to destroy or at least to refine and uniformly distribute the carbides precipitations to improve mechanical properties of the exhaust manifold castings for the cars. The experiments were carried out for the alloy contains approx. 4% Si, 1% Mo and 3.2%C. The range of the research included: hardness measuring, standard mechanical properties and microstructure for as-cast state and after that the subsequent heat treatment process with another properties check. The result of the heat treatment was the elimination of pearlite from the metal matrix. Moreover, the changes of the carbide molybdenum - rich phase morphology were observed. The dispersion of the carbides precipitations in the carbides area was observed. The experiments proved the possibility to control the microstructure and the mechanical properties of the SiMo castings by means of heat treatment but only to some extent. [ABSTRACT FROM AUTHOR]

Published
2018
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27. Poster Session 2: Monday 4 May 2015, 08:00-18:00 * Room: Poster Area

Author

Bouyoucef, S. E., primary, Uusitalo, V., additional, Kamperidis, V., additional, De Graaf, M., additional, Maaniitty, T., additional, Stenstrom, I., additional, Broersen, A., additional, Scholte, A., additional, Saraste, A., additional, Bax, J., additional, Knuuti, J., additional, Furuhashi, T., additional, Moroi, M., additional, Awaya, T., additional, Masai, H., additional, Minakawa, M., additional, Kunimasa, T., additional, Fukuda, H., additional, Sugi, K., additional, Berezin, A., additional, Kremzer, A., additional, Clerc, O., additional, Kaufmann, B., additional, Possner, M., additional, Liga, R., additional, Vontobel, J., additional, Mikulicic, F., additional, Graeni, C., additional, Benz, D., additional, Kaufmann, P., additional, Buechel, R., additional, Ferreira, M., additional, Cunha, M., additional, Albuquerque, A., additional, Ramos, D., additional, Costa, G., additional, Lima, J., additional, Pego, M., additional, Peix, A., additional, Cisneros, L., additional, Cabrera, L., additional, Padron, K., additional, Rodriguez, L., additional, Heres, F., additional, Carrillo, R., additional, Mena, E., additional, Fernandez, Y., additional, Huizing, E., additional, Van Dijk, J., additional, Van Dalen, J., additional, Timmer, J., additional, Ottervanger, J., additional, Slump, C., additional, Jager, P., additional, Venuraju, S., additional, Jeevarethinam, A., additional, Yerramasu, A., additional, Atwal, S., additional, Mehta, V., additional, Lahiri, A., additional, Arjonilla Lopez, A., additional, Calero Rueda, M. J., additional, Gallardo, G., additional, Fernandez-Cuadrado, J., additional, Hernandez Aceituno, D., additional, Sanchez Hernandez, J., additional, Yoshida, H., additional, Mizukami, A., additional, Matsumura, A., additional, Smettei, O., additional, Abazid, R., additional, Sayed, S., additional, Mlynarska, A., additional, Mlynarski, R., additional, Golba, K., additional, Sosnowski, M., additional, Winther, S., additional, Svensson, M., additional, Jorgensen, H., additional, Bouchelouche, K., additional, Gormsen, L., additional, Holm, N., additional, Botker, H., additional, Ivarsen, P., additional, Bottcher, M., additional, Cortes, C. M., additional, Aramayo G, E., additional, Daicz, M., additional, Casuscelli, J., additional, Alaguibe, E., additional, Neira Sepulveda, A., additional, Cerda, M., additional, Ganum, G., additional, Embon, M., additional, Vigne, J., additional, Enilorac, B., additional, Lebasnier, A., additional, Valancogne, L., additional, Peyronnet, D., additional, Manrique, A., additional, Agostini, D., additional, Menendez, D., additional, Rajpal, S., additional, Kocherla, C., additional, Acharya, M., additional, Reddy, P., additional, Sazonova, I., additional, Ilushenkova, Y., additional, Batalov, R., additional, Rogovskaya, Y., additional, Lishmanov, Y., additional, Popov, S., additional, Varlamova, N., additional, Prado Diaz, S., additional, Jimenez Rubio, C., additional, Gemma, D., additional, Refoyo Salicio, E., additional, Valbuena Lopez, S., additional, Moreno Yanguela, M., additional, Torres, M., additional, Fernandez-Velilla, M., additional, Lopez-Sendon, J., additional, Guzman Martinez, G., additional, Puente, A., additional, Rosales, S., additional, Martinez, C., additional, Cabada, M., additional, Melendez, G., additional, Ferreira, R., additional, Gonzaga, A., additional, Santos, J., additional, Vijayan, S., additional, Smith, S., additional, Smith, M., additional, Muthusamy, R., additional, Takeishi, Y., additional, Oikawa, M., additional, Goral, J. L., additional, Napoli, J., additional, Montana, O., additional, Damico, A., additional, Quiroz, M., additional, Forcada, P., additional, Schmidberg, J., additional, Zucchiatti, N., additional, Olivieri, D., additional, Dumo, A., additional, Ruano, S., additional, Rakhit, R., additional, Davar, J., additional, Nair, D., additional, Cohen, M., additional, Darko, D., additional, Yokota, S., additional, Maas, A., additional, Mouden, M., additional, Knollema, S., additional, Sanja Mazic, S., additional, Lazovic, B., additional, Marina Djelic, M., additional, Jelena Suzic Lazic, J., additional, Tijana Acimovic, T., additional, Milica Deleva, M., additional, Vesnina, Z., additional, Zafrir, N., additional, Bental, T., additional, Mats, I., additional, Solodky, A., additional, Gutstein, A., additional, Hasid, Y., additional, Belzer, D., additional, Kornowski, R., additional, Ben Said, R., additional, Ben Mansour, N., additional, Ibn Haj Amor, H., additional, Chourabi, C., additional, Hagui, A., additional, Fehri, W., additional, Hawala, H., additional, Shugushev, Z., additional, Patrikeev, A., additional, Maximkin, D., additional, Chepurnoy, A., additional, Kallianpur, V., additional, Mambetov, A., additional, Dokshokov, G., additional, Teresinska, A., additional, Wozniak, O., additional, Maciag, A., additional, Wnuk, J., additional, Dabrowski, A., additional, Czerwiec, A., additional, Jezierski, J., additional, Biernacka, K., additional, Robinson, J., additional, Prosser, J., additional, Cheung, G., additional, Allan, S., additional, Mcmaster, G., additional, Reid, S., additional, Tarbuck, A., additional, Martin, W., additional, Queiroz, R., additional, Falcao, A., additional, Giorgi, M., additional, Imada, R., additional, Nogueira, S., additional, Chalela, W., additional, Kalil Filho, R., additional, Meneghetti, W., additional, Matveev, V., additional, Bubyenov, A., additional, Podzolkov, V., additional, Baranovich, V., additional, Faibushevich, A., additional, Kolzhecova, Y., additional, Volkova, O., additional, Fernandez, J., additional, Lopez, G., additional, Dondi, M., additional, Paez, D., additional, Butcher, C., additional, Reyes, E., additional, Al-Housni, M., additional, Green, R., additional, Santiago, H., additional, Ghiotto, F., additional, Hinton-Taylor, S., additional, Pottle, A., additional, Mason, M., additional, Underwood, S., additional, Casans Tormo, I., additional, Diaz-Exposito, R., additional, Plancha-Burguera, E., additional, Elsaban, K., additional, Alsakhri, H., additional, Yoshinaga, K., additional, Ochi, N., additional, Tomiyama, Y., additional, Katoh, C., additional, Inoue, M., additional, Nishida, M., additional, Suzuki, E., additional, Manabe, O., additional, Ito, Y., additional, Tamaki, N., additional, Tahilyani, A., additional, Jafary, F., additional, Ho Hee Hwa, H., additional, Ozdemir, S., additional, Kirilmaz, B., additional, Barutcu, A., additional, Tan, Y., additional, Celik, F., additional, Sakgoz, S., additional, Cabada Gamboa, M., additional, Puente Barragan, A., additional, Morales Vitorino, N., additional, Medina Servin, M., additional, Hindorf, C., additional, Akil, S., additional, Hedeer, F., additional, Jogi, J., additional, Engblom, H., additional, Martire, V., additional, Pis Diez, E., additional, Martire, M., additional, Portillo, D., additional, Hoff, C., additional, Balche, A., additional, Majgaard, J., additional, Tolbod, L., additional, Harms, H., additional, Soerensen, J., additional, Froekiaer, J., additional, Nudi, F., additional, Neri, G., additional, Procaccini, E., additional, Pinto, A., additional, Vetere, M., additional, Biondi-Zoccai, G., additional, Soares, J., additional, Do Val, R., additional, Oliveira, M., additional, Meneghetti, J., additional, Tekabe, Y., additional, Anthony, T., additional, Li, Q., additional, Schmidt, A., additional, Johnson, L., additional, Groenman, M., additional, Tarkia, M., additional, Kakela, M., additional, Halonen, P., additional, Kiviniemi, T., additional, Pietila, M., additional, Yla-Herttuala, S., additional, Roivainen, A., additional, Nekolla, S., additional, Swirzek, S., additional, Higuchi, T., additional, Reder, S., additional, Schachoff, S., additional, Bschorner, M., additional, Laitinen, I., additional, Robinson, S., additional, Yousefi, B., additional, Schwaiger, M., additional, Kero, T., additional, Lindsjo, L., additional, Antoni, G., additional, Westermark, P., additional, Carlson, K., additional, Wikstrom, G., additional, Sorensen, J., additional, Lubberink, M., additional, Rouzet, F., additional, Cognet, T., additional, Guedj, K., additional, Morvan, M., additional, El Shoukr, F., additional, Louedec, L., additional, Choqueux, C., additional, Nicoletti, A., additional, Le Guludec, D., additional, Jimenez-Heffernan, A., additional, Munoz-Beamud, F., additional, Sanchez De Mora, E., additional, Borrachero, C., additional, Salgado, C., additional, Ramos-Font, C., additional, Lopez-Martin, J., additional, Hidalgo, M., additional, Lopez-Aguilar, R., additional, Soriano, E., additional, Okizaki, A., additional, Nakayama, M., additional, Ishitoya, S., additional, Sato, J., additional, Takahashi, K., additional, Burchert, I., additional, Caobelli, F., additional, Wollenweber, T., additional, Nierada, M., additional, Fulsche, J., additional, Dieckmann, C., additional, Bengel, F., additional, Shuaib, S., additional, Mahlum, D., additional, Port, S., additional, Refoyo, E., additional, Cuesta, E., additional, Guzman, G., additional, Lopez, T., additional, Valbuena, S., additional, Del Prado, S., additional, Moreno, M., additional, Harbinson, M., additional, Donnelly, L., additional, Einstein, A. J., additional, Johnson, L. L., additional, Deluca, A. J., additional, Kontak, A. C., additional, Groves, D. W., additional, Stant, J., additional, Pozniakoff, T., additional, Cheng, B., additional, Rabbani, L. E., additional, Bokhari, S., additional, Schuetze, C., additional, Aguade-Bruix, S., additional, Pizzi, M., additional, Romero-Farina, G., additional, Terricabras, M., additional, Villasboas, D., additional, Castell-Conesa, J., additional, Candell-Riera, J., additional, Brunner, S., additional, Gross, L., additional, Todica, A., additional, Lehner, S., additional, Di Palo, A., additional, Niccoli Asabella, A., additional, Magarelli, C., additional, Notaristefano, A., additional, Ferrari, C., additional, Rubini, G., additional, Sellem, A., additional, Melki, S., additional, Elajmi, W., additional, Hammami, H., additional, Ziadi, M., additional, Montero, J., additional, Ameriso, J., additional, Villavicencio, R., additional, Benito Gonzalez, T. F., additional, Mayorga Bajo, A., additional, Gutierrez Caro, R., additional, Rodriguez Santamarta, M., additional, Alvarez Roy, L., additional, Martinez Paz, E., additional, Barinaga Martin, C., additional, Martin Fernandez, J., additional, Alonso Rodriguez, D., additional, Iglesias Garriz, I., additional, Rosillo, S., additional, Taleb, S., additional, Cherkaoui Salhi, G., additional, Regbaoui, Y., additional, Ait Idir, M., additional, Guensi, A., additional, Martin Lopez, C. E., additional, and Castano Ruiz, M., additional

Published
2015
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34. PARAMETERS OF A GAS-SOLIDS JET IN PNEUMATIC POWDER INJECTION INTO LIQUID ALLOYS WITH A NON-SUBMERGED LANCE.

Author

JEZIERSKI, J. and JANERKA, K.

Subjects
*GAS-solid interfaces, *PNEUMATICS, *JETS (Fluid dynamics), *LIQUID alloys, *IRON alloys, *PARAMETER estimation
Abstract

The paper presents powder injection into liquid alloys with a non-submerged lance. The parameters of the diphase gas-solids jet were found as the most important factor to achieve good efficiency of the process. If the parameters are improper, the jet will not penetrate the liquid and the solid particles will not be uniformly distributed. The jet cone profile is often crucial for diphase jet penetration, so this parameter was analyzed along with particle velocity on the lance outlet and the experiments proven this assumption. The use of a high-speed camera allowed to capture and analyze jet motion, which verified the data of previous authors and that in the literature. Experiments of both the model and real injection into molten cast iron proved both the mathematical model and numerical simulation. [ABSTRACT FROM AUTHOR]

Published
2015

37. P125 The value of cardiac iodine-123-metaiodobenzylguanidine scintigraphy in postinfarction heart failure patients qualified for implantable cardioverter defibrillator in follow up of 2-5 years.

Author

Teresinska, A, Wozniak, O, Maciag, A, Wnuk, J, Fronczak, A, Jezierski, J, and Biernacka, E K

Subjects
ARRHYTHMIA diagnosis, MYOCARDIAL infarction diagnosis, CONFERENCES & conventions, IMPLANTABLE cardioverter-defibrillators, RADIONUCLIDE imaging, TIME
Published
2019
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42. Pseudo atypical atrial flutter or atrial tachycardia dependent on complex substrate in a patient with univentricular heart after palliative operations - Mapping and ablation,Rzekomo atypowe trzepotanie przedsionków czy czȩstoskurcz przedsionkowy zalezny od złozonego podłoża u chorej z sercem jednokomorowym po operacjach paliatywnych - Opis ablacji

Author

Szumowski, Ł., Głowniak, A., Zakrzewska, J., Derejko, P., Szufladowicz, E., Bodalski, R., Orczykowski, M., Andrzej Przybylski, Kȩpski, R., Duda, B., Michatek, P., Jezierski, J., and Walczak, F.

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