Ceramic filters for bulk inoculation of nickel alloy castings

• Autorzy: Binczyk F. , Śleziona J. , Gradoń P.
• Języki publikacji: EN

Abstrakty

EN

The work includes the results of research on production technology of ceramic filters which, besides the traditional filtering function, play also the role of an inoculant modifying the macrostructure of cast nickel alloys. To play this additional role, filters should demonstrate sufficient compression strength and ensure proper flow rate of liquid alloy. The role of an inoculant is played by cobalt aluminate introduced to the composition of external coating in an amount from 5 to 10 wt.%. The required compression strength (over 1MPa) is provided by the supporting layers, deposited on the preform, which is a polyurethane foam. Based on a two-level fractional experiment 2^4-1, the significance of an impact of various technological parameters (independent variables) on selected functional parameters of the ready filters was determined. Important effect of the number of the supporting layers and sintering temperature of filters after evaporation of polyurethane foam was stated.

Słowa kluczowe

EN

nickel superalloy; ceramic filter; CoAl2O4 inoculant; compression strength

PL

nadstop niklu; filtr ceramiczny; inokulant CoAl2O4; wytrzymałość na ściskanie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 3 spec.
• Strony: 29--32
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wykr.

Twórcy

autor

Binczyk F.

• Chair of Materials Technology, Silesian University of Technology, Krasińskiego Str. 8, 40-019 Katowice, Poland

autor

Śleziona J.

• Chair of Materials Technology, Silesian University of Technology, Krasińskiego Str. 8, 40-019 Katowice, Poland

autor

Gradoń P.

• Chair of Materials Technology, Silesian University of Technology, Krasińskiego Str. 8, 40-019 Katowice, Poland

Bibliografia

• [1] F. Zupanic, T. Boncina, A. Krizman, F.D. Tichelaar: Structure of continuously cast Ni-based superalloy Inconel 713C, Journal of Alloys and Compounds, volume 329, issue 1-2, november 14, 2001, pp.290-297.
• [2] M. Tabuchi, K. Kubo, K. Yagi, A.T. Yokobori Jr, A. Fuji: Results of a Japanese round robin on creep crack growth evaluation methods for Ni-base superalloys , Engineering Fracture mechanics, volume 62, issue 1, january 1999, pp. 47-60.
• [3] Hartman D., Muerrle U., Reber G.: The effects electron beam refining on the cast ability of IN 713 C, Metall, 1992, nr 5, pp.443-447.
• [4] L. Liu, T. Huang, Y. Xiong: Grain refinement of superalloy K4169 by addition of refinerwes: cast structure and refinement mechanisms, Materials Science and Engineering A, 394, 2005, pp.1-8.
• [5] Yang, Y., Nomura, H., Takita, M.: Inclusion removal using ceramic foam filters and filter size estimation. Int. J. Cast Metals Res. t.9, 1996.
• [6] Piech K.: Ceramiczne filtry piankowe, charakterystyka I zastosowanie praktyczne, Przegląd Odlewnictwa, 1/1995.
• [7] Adams A; Modification Properties of Ceramic Foam Filters –A Summary of Recent Work Modern Casting (USA), vol. 91, no. 3, pp. 34-36, Mar. 2001.
• [8] V.N. Antsiferov, S. E. Porozova, L. V. Nikulin, et al.: Effect of the material of foam ceramic filter on the microstructure of duralumin, Ogneup. Tekh. Keram.,No. 7, 11 14/1997.
• [9] Klecikowicki K.: Piankowe filtry ceramiczne w formach na linii Disamatic, Przegląd Odlewnictwa 6/1999.
• [10] Asłanowicz M., Ościłowski A., Stachańczyk J.: Filtracja ciekłych metali z użyciem filtrów produkcji FERRO-TERM, Przegląd Odlewnicta, 9-10/2002.
• [11] Zgłoszenia patentowe z dnia 28. 10. 2010r, nr P.392782 „Filtr ceramiczny do modyfikacji objętościowej struktury odlewów z żarowytrzymałych stopów niklu i kobaltu”.