Investigations of the Thickness of Protective Coatings Deposited on Moulds and Cores

• Autorzy: Jamrozowicz Ł. , Kolczyk-Tylka J. , Siatko A.

Identyfikatory

DOI

10.24425/afe.2018.125182

• Języki publikacji: EN

Abstrakty

EN

This article presents measurements of the thickness of alcohol-based coatings on sand foundry cores and moulds. These coatings were applied using two methods, the dipping method and the painting method. For the purposes of the study, a zircon alcohol-based coating was prepared with three different levels of nominal viscosity; very thin at 10s, average at 20s, and thick at 30s. The coating was applied to a core made of quartz sand and furan resin. The cores were made of sand with three different grain sizes; d_L = 0.22 mm – fine sand, d_L = 0.33 mm medium sand, and d_L = 0.47 mm coarse sand. In the study, the thickness of the coating obtained to the core was measured immediately after application as well as after drying. Additionally, the extent of penetration into the intergranular spaces of the core matrix was measured. On the basis of this study, the impact of the grain size of the core matrix on the thickness of the coating and its penetration into the core was assessed. The thickness of coatings obtained using different application methods was also assessed.

Słowa kluczowe

EN

protective coating; coating thickness; coating viscosity; foundry core; foundry mold

PL

powłoka ochronna; grubość powłoki; lepkość powłoki; rdzeń odlewniczy; masa odlewnicza

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 4
• Strony: 131--136
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Jamrozowicz Ł.

• AGH, University of Science and Technology in Cracow, Faculty of Foundry Engineering, Reymonta 23, 30-059 Cracow, Poland

autor

Kolczyk-Tylka J.

• AGH, University of Science and Technology in Cracow, Faculty of Foundry Engineering, Reymonta 23, 30-059 Cracow, Poland

autor

Siatko A.

• AGH, University of Science and Technology in Cracow, Faculty of Foundry Engineering, Reymonta 23, 30-059 Cracow, Poland

Bibliografia

• [1] Lewandowski, L.J. (1997). Materials for foundry molds. Kraków. Wydawnictwo „Akapit”.
• [2] Seeger, K. (2012). Application of water coverings in manual forming. Przegląd Odlewnictwa. 7-8, 322-326. (in Polish).
• [3] Zych, J. & Snopkiewicz, T. (2011). Drying and strengthening of protective coatings after deposition on casting moulds and sand cores – new investigation methods. Przegląd Odlewnictwa. 9-10, 506-512.
• [4] Zych, J. (2006). Application of the novel ultrasonic method in the on line research of the setting, and hardening process of ceramic materials. Inżynieria Materiałowa. 27(3), 680-683.
• [5] Holtzer, M., Bobrowski, A., Drożyński, D. & Mocek, J. (2013). Investigations of protective coatings for castings of high-manganese cast steels. Archives of Foundry Engineering. 13(1), 39-44.
• [6] Jakubski, J., Dobosz, St.M. & Jelinek, P. (2005). The influence of the protective coating type on thermal deformation of casting cores. Archives of Foundry. 5(15), 164-169.
• [7] Jakubski J., Dobosz St. (2006). The influence of the protective coating on thermal effects in core sands Wpływ powłoki ochronnej na zjawiska cieplne w rdzeniach odlewniczych. Archives of Foundry. 6(18), 453-458. (in Polish).
• [8] Kubicki, J. & Kochmańska, A. (2001). Multicomponent protection coatings on hightemperaturecreep resisting cast steel obtained from paste. Archives of Foundry. 1(1). (in Polish).
• [9] Kochmańska, A. & Kubicki, J. (2009). Efficiency of protective coatings on high creep resistant cast steel. Archives of Foundry Engineering. 9(2), 129-132.
• [10] Wróbel, J. (2014). Research on the quality of zirconium protective coatings in terms of their suitability for molds and sand cores for cast steel. Przegląd odlewnictwa. 64(9-10). (in Polish).
• [11] Jamrozowicz, Ł. Zych, J. & Kolczyk, J. (2015). The drying kinetics of protective coatings used on sand molds. Metalurgija. 54(1), 23-26.
• [12] Jamrozowicz, Ł., Zych, J., Kolczyk, J. & Wróblewski, D. (2014). The Role of the Surface Shape of the Mould in the Process of Drying of Selected Protective Coatings. Archives of Foundry Engineering. 14(spec.2), 39-44. (in Polish).

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).