Quality assessment of expendable patterns in the investment casting process

• Autorzy: Matysiak H. , Haratym R. , Kurzydlowski K. J. , Biernacki R.
• Języki publikacji: EN

Abstrakty

EN

The article presents the basic attempts at expendable patterns quality assessment, such as hardness test, creeping resistance tests and the assessment of patterns mixtures contraction as a function of solidification module. These features were verified on step-shaped pat-terns. Patterns mixtures made on the basis of hard waxes were selected for tests and compared with the domestic mixture based on paraffin and stearin (PS) as well as with the PS-mixture to which the material of used patterns from the WSK Rzeszow factory was added. The selected tests enable a quick assessment of whether the pattern mixture quality meets the requirements of optimum size accuracy and good quality of casting surfaces.

Słowa kluczowe

EN

expendable pattern; quality assessment; investment casting process

PL

model jednorazowego użytku; ocena jakości; metoda traconego wosku

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1 spec.
• Strony: 247--250
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr.

Twórcy

autor

Matysiak H.

• Warsaw University of Technology, UCB Functional Materials, Woloska 141, 02-507 Warsaw

autor

Haratym R.

• University of Ecology and Management, Wawelska 14, 02-061 Warsaw

autor

Kurzydlowski K. J.

• Warsaw University of Technology, Faculty of Materials Engineering, Woloska 141, 02-507 Warsaw

autor

Biernacki R.

• Warsaw University of Technology, Institute of Manufacturing Technologies, Narbutta 85, 02-524 Warsaw

Bibliografia

• [1] R. Haratym, Processes of investment casting in ceramic dies, Warsaw University of Technology, Publishing House, War-saw 1997, (in Polish).
• [2] Joint publication, M. Perzyk (Editor), Laboratory classes – Casting, Warsaw University of Technology, Publishing House, Warsaw 1995, (in Polish).
• [3] R. Haratym, R. Biernacki, D. Myszka, Ecological investment casting in ceramic dies, Warsaw University of Technology, Publishing House, Warsaw 2008, , (in Polish).
• [4] A.S. Sabau and S. Viswanathan, Prediction of Wax Pattern Dimensions in Investment Casting, AFS Transactions 02-103 (Page 1 of 14) 2002.
• [5] BICTA, 1983, Characterization of Investment Casting Foun-dry Waxes-Phase 1, Agreement No. 71c/2232, Investment Casting Studies.
• [6] BICTA, 1985, Characterization of Investment Casting Foun-dry Waxes-Phase 2, Agreement No. A28B/061, Investment Casting Studies.
• [7] M. Horacek, J. Helan, Dimensional Stability of Investment Casting, Proceedings of 46th Annual Technical Meeting 1998, ICI, Orlando.
• [8] T.S. Piwonka, J.M. Wiest, Factors Affecting Investment Casting Pattern Die Dimensions, 1998, Incast, Vol. 11, No. 6.
• [9] Ch. Verta, Thermodynamic Properties of Investment Casting Waxes and Their Effect on Shell Cracking, Incast, March 1998.