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Number of results: 6
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Differences in moral foundations

Mirosław Kofta
ACADEMIA. The magazine of the Polish Academy of Sciences | 2016 | Nr 1 (45) Interventions | 18-22
Keywords political change in Poland
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Abstract

Prof. Mirosław Kofta, a psychologist from the University of Warsaw’s Faculty of Psychology and Institute for Social Studies, discusses political change in Poland, authoritarian personality, and civil society.

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Authors and Affiliations

Mirosław Kofta

We walk this path together

Artur Kościański
ACADEMIA. The magazine of the Polish Academy of Sciences | 2017 | Nr 1 (53) 2017 Freedom | 18-22
Keywords civil society
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Abstract

Dr. Artur Kościański from the PAS Institute of Philosophy and Sociology explains how civil society works in Poland and how the Internet contributes to its development.

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Authors and Affiliations

Artur Kościański

Some Possibilities of Using Statistical Methods While Solving Poor Quality Production

R. Lakomá L. Čamek P. Lichý I. Kroupová F. Radkovský T. Obzina
Archives of Foundry Engineering | 2021 | vo. 21 | No 1 | 18-22 | DOI: 10.24425/afe.2021.136073
Keywords Poor quality Statistical hypothesis Production process Investment casting Wax pattern
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Abstract

This paper presents an overview of a research on six practical cases that were solved in a precise casting company where parts are cast by the mean of the low-wax casting method (investment casting) in order to decrease poor quality production. The steel cast parts production technology by the lost-wax method requires the detailed work procedures observation. On the base of statistical processing data of given types of casting products, it was possible to assess the significance of each particular checking events by using the statistical hypothesis testing. The attention was focused on wax and ceramic departments. The data in technological flow were compared before and after the implementation of the change and statistical confirmative influences were assessed. The target consisted in setting such control manners in order to get the right conditions for decreasing poor quality parts. It was evidenced that the cast part defect cause correct identification and interpretation is important.
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Bibliography

[1] Elbel, T., Havlíček, F., Jelínek, P., Levíček, P., Rous, J., Stránský, K. (1992). Defects of iron alloy castings (classification, causes and prevention). Brno: MATECS. (in Czech).
[2] Nenadál, J. (2004). Measurement in quality management systems. Praha: Management Press. (in Czech).
[3] Lakomá, R., Čamek, L. (2013). Possibilities for quality control of casting products . In 22nd International Conference on Metallurgy and Materials, Metal, 15th-17th May 2013 (p. 40). Brno, Czech Republic, TANGER s. r. o. Ostrava. ISBN 978-80-87294-39-0.
[4] Plura, J. (2001). Planning and continuous quality improvement. Praha: Computer Press. (in Czech).
[5] Čamek, L., Lichý, P., Kroupová, I., Duda, J., Beňo, J., Korbáš, M., Radkovský, F., Bliznyukov, S. (2016). Effect of cast steel production metallurgy on the emergence of casting defect. Metalurgija. 55(4), 701-704. ISSN 0543-5846.
[6] Jezierski, J., Dojka, K., Kubiak, K., et al. (2016). Experimental approach for optimization of gating system in castings. In 25th International Conference on Metallurgy and Materials, Metal 25th-27th May (pp. 104-109). Brno, Czech Republic, TANGER s. r. o. Ostrava. ISSN 0543-5846.
[7] Jaromin, M., Dojka, R., Jezierski, J., Dojka, M. (2019). Influence of Type and Shape of the Chill on Solidification Process of Steel Casting. Archives of Foundry Engineering. 19(1), 35-40. ISSN (1897-3310).
[8] Richtarech, L., Bolibruchova, D.; Bruna, M.; Caiss, J. (2015). Influence of Nickel Addition on Properties of Secondary AlSi7Mg0.3 Alloy‎. Archives of Foundry Engineering. 15(2), 95-98. ISSN (1897-3310). DOI: 10.1515/afe-2015-0046.
[9] Merta, V., Lána, I. (2020). Manufacturing of Cast-metal Sponges from Copper Alloys. Materiali in Technologije. 54(1), 117-119. DOI: 10.17222/mit.2019.159.
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Authors and Affiliations

R. Lakomá
1
L. Čamek
2
P. Lichý
2
ORCID: ORCID
I. Kroupová
1
ORCID: ORCID
F. Radkovský
1
ORCID: ORCID
T. Obzina
1
  1. VSB - Technical university of Ostrava, Czech Republic
  2. Brno University of Technology, Czech Republic

The Effect of Sulphur Content on the Microstructure of Vermicular Graphite Cast Iron

Marek Mróz A.W. Orłowicz M. Tupaj M. Lenik M. Kawiński M.. Kawiński
Archives of Foundry Engineering | 2022 | vol. 22 | No 1 | 18-22 | DOI: 10.24425/afe.2022.140212
Keywords Pig iron sulphur content Vermicular graphite cast iron Microstructure
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Abstract

The application of ferritic-matrix vermicular graphite cast iron in the production of fireplace fireboxes improves their thermal output, but the consumer market for these products prioritises their price. Given this consideration, this work concerns a comparison of the quality of vermicular graphite cast iron types produced from 0.025%S pig iron (a less expensive material) and 0.010%S pig iron (a more expensive material) in terms of the number and shape of vermicular graphite precipitates varying with the magnesium level in the alloy. It turned out that the vermicular graphite cast iron made with the 0.025%S pig iron demonstrated a slightly lower number of vermicular graphite precipitates. For both vermicular graphite cast iron melts, 0.028%Mg and 0.020%Mg in the alloys provided a vermicular graphite precipitate share of approx. 50% and 95%, respectively.
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Bibliography

[1] Mróz, M., Orłowicz, A.W., Tupaj, M., Lenik, M., Kawiński, M., Kawiński, M. Influence of microstructure and heat transfer surface on the thermal power of cast iron heat exchangers. Archives of Foundry Engineering. (in progres).
[2] Podrzucki, C., Wojtysiak, A. (1987). Unalloyed plastic cast iron. Kraków: Wyd. AGH. ( in Polish).
[3] Sillen, R. (2003). Proces PQ-CGL InMold – cast iron vermicularization in mold. Biuletyn Metals and Minerals. 3, 30-34. (in Polish).
[4] Källbom, R., Hamberg, K., Björkegren, L.S. Chunky graphite in ductile cast iron castings. World Foundry Congress, 184/1-184/10, WFC 06.
[5] Goodrich, G.M. (2001). A microview of some factors that impact cast iron (or the little things that mean a lot). AFS Transactions. 01-121, 1173-1189.
[6] Pietrowski, S., Pisarek, B., Władysiak, R. (2000). Investigation of the crystallization of cast iron with vermicular graphite and description of its analytical and numerical model. Research project KBN Nr 7T08B 006 13, Łódź, (in Polish).
[7] Żyrek, A. (2014). Manufacture of vermicular cast iron by the Inmould method with the use of magnesium mortars and evaluation of its resistance to thermal fatigue. PhD thesis AGH Kraków. (in Polish).
[8] Nodżak, G. (2002). Analysis of the possibilities produced in the foundry of WSK "PZL Rzeszów" S.A. castings of a high-power diesel engine head from vermicular cast iron. Master thesis, AGH Kraków. (in Polish).
[9] Orłowicz A.W. (2000). The use of ultrasound in foundry. Monograph. Krzepnięcie Metali i Stopów. 2(45). (in Polish).
[10] Ashby, M.F. (1998). Selection of materials in engineering design. Warszawa: Wyd. Naukowo-Techniczne. (in Polish).

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Authors and Affiliations

Marek Mróz
ORCID: ORCID
A.W. Orłowicz
1
ORCID: ORCID
M. Tupaj
1
ORCID: ORCID
M. Lenik
1
ORCID: ORCID
M. Kawiński
2
M.. Kawiński
2
  1. Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
  2. Cast Iron Foundry KAWMET, ul. Krakowska 11, 37-716 Orły, Poland

Na wspólnej drodze

Artur Kościański
ACADEMIA. Magazyn Polskiej Akademii Nauk | 2017 | Nr 1 (49) 2017 Wolność | 18-22
Keywords socjologia
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Abstract

Otym, jak funkcjonuje w Polsce społeczeństwo obywatelskie i czy jego rozwojowi sprzyja Internet, mówi dr Artur Kościański z Instytutu Filozofii i Socjologii PAN.

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Authors and Affiliations

Artur Kościański

Życie w różnych kodach

Mirosław Kofta
ACADEMIA. Magazyn Polskiej Akademii Nauk | 2016 | Nr 1 (45) 2016 Ingerencje | 18-22
Keywords zmiany polityczne w Polsce Komitet Obrony Demokracji Trybunał Konstytucyjny
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Abstract

The Bulletin of the Polish Academy of Sciences: Technical Sciences (Bull.Pol. Ac.: Tech.) is published bimonthly by the Division IV Engineering Sciences of the Polish Academy of Sciences, since the beginning of the existence of the PAS in 1952. The journal is peer‐reviewed and is published both in printed and electronic form. It is established for the publication of original high quality papers from multidisciplinary Engineering sciences with the following topics preferred: Artificial and Computational Intelligence, Biomedical Engineering and Biotechnology, Civil Engineering, Control, Informatics and Robotics, Electronics, Telecommunication and Optoelectronics, Mechanical and Aeronautical Engineering, Thermodynamics, Material Science and Nanotechnology, Power Systems and Power Electronics.

Journal Metrics: JCR Impact Factor 2018: 1.361, 5 Year Impact Factor: 1.323, SCImago Journal Rank (SJR) 2017: 0.319, Source Normalized Impact per Paper (SNIP) 2017: 1.005, CiteScore 2017: 1.27, The Polish Ministry of Science and Higher Education 2017: 25 points.

Abbreviations/Acronym: Journal citation: Bull. Pol. Ac.: Tech., ISO: Bull. Pol. Acad. Sci.-Tech. Sci., JCR Abbrev: B POL ACAD SCI-TECH Acronym in the Editorial System: BPASTS.

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Authors and Affiliations

Mirosław Kofta

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