Some Possibilities of Using Statistical Methods While Solving Poor Quality Production

• Autorzy: Lakomá R. , Čamek L. , Lichý P. , Kroupová I. , Radkovský F. , Obzina T.

Identyfikatory

DOI

10.24425/afe.2021.136073

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

production process; investment casting; poor quality products; casting defects; quality of cast; statistical hypothesis; wax patterns

PL

proces produkcji; produkty odlewnicze; wady odlewów; jakość odlewu; metody statystyczne; formy woskowe

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2021
• Tom: Vol. 21, iss. 1
• Strony: 18--22
• Opis fizyczny: Bibliogr. 9 poz., fot., rys., tab.

Twórcy

autor

Lakomá R.

• VSB - Technical university of Ostrava, Czech Republic

autor

Čamek L.

• Brno University of Technology, Czech Republic

autor

Lichý P.

• VSB - Technical university of Ostrava, Czech Republic

autor

Kroupová I.

• VSB - Technical university of Ostrava, Czech Republic

autor

Radkovský F.

• VSB - Technical university of Ostrava, Czech Republic

autor

Obzina T.

• VSB - Technical university of Ostrava, Czech Republic

Bibliografia

• [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.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).