High-temperature expansion and knock-out properties of moulding sands with water glass

• Autorzy: Major-Gabryś K. , Dobosz S. M.
• Języki publikacji: EN

Abstrakty

EN

The article focuses on the topic of improving the knock-out properties of moulding sand with water glass and ester hardener. It is settled that the cause of worse knock-out properties of moulding sand can be brought by their thermal expansion in increased temperatures. There is a presentation of the influence of different additives, containing Al2O3, on moulding sands' expansion in increased temperatures. Within the frames of research, there was an elaboration of the influence of authors own additive- Glassex, on the expansion phenomenon of moulding sands with water glass and ester hardener. It is concluded, that the new additive stops the expansion of moulding sands and as well it improves their knock-out properties.

Słowa kluczowe

EN

moulding sands; water glass; knock-out properties; new additive glassex

PL

masa formierska; szkło wodne; wybijalność; dodatki

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2007
• Tom: Vol. 7, iss. 1
• Strony: 127--130
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Major-Gabryś K.

autor

Dobosz S. M.

• Faculty of Foundry Engineering, University of Sciences and Technology AGH, Reymonta 23, 30-059 Kraków,

Bibliografia

• [1] Liu W-H, Guan J., Zhu C-X, Lu C, Dai Y: The development of water-glass sand, Foundry, 2001, nr 3, s. 125-128.
• [2] Levin E.M., Robbins C.R., McMurdie H.F.: Phase Diagram for Ceramists, Columbus, Ohio, USA, 1964.
• [3] Gitzen W.H.: Alumina as a Ceramic Material. The American Ceramic Society. Ohio.
• [4] Fan Zitian, Huang Naiyu, Wang Huafang, Dong Xuanpu: Dry reusing and wet reclaiming of used sodium silicate sand, China Foundry, 2005, nr 1, s. 38-43.
• [5] Jelinek P.: Binding systems of core and moulding sands.. Ostrava 2004. (in Czech)
• [6] Syčev I.S.: Elaboration of moulding sands with good knock-out properties, Litejnoje Proizvodstvo, 1965, nr 6 s. 31-37. (in Russian)
• [7] Jelinek P.: The influence of Al2O3 on knock-out properties of moulding sand wit water glass. Sbornik vedeckych praci Vysoke skoly banske v Ostrave. Rocnik XIV, cislo 6. Ostrava 1968. (in Czech)
• [8] Dobosz St.M. Water in core and moulding sands. Wydawnictwo Naukowe "AKAPIT", Kraków 2006 (in Polish).
• [9] Dobosz St. M., Major-Gabryś K.: Glassex- a new additive improving the knock-out properties of moulding sands with water glass. Archives of Foundry, Katowice 2004, Vol. 4, No. 13. s. 63 - 68 .(in Polish).
• [10] Dobosz St. M., Major-Gabryś K.: Surface phenomenons versus knock-out properties of moulding sands with water glass. Archives of Mechanical Technology and Automation, Poznań 2004, Vol. 24, No 1, s. 49 - 56. (in Polish).
• [11] Dobosz St. M.: Moulding sands with water glass with increased knock-out properties. Archives of Foundry, Katowice 2004, Vol. 4, No 11, s. 108- 113 .(in Polish).
• [12] Major-Gabryś K., Dobosz St. M., Zych J.: Criteria of estimatic the knock-out properties of molding sands with water glass. Archives of Foundry, Katowice 2005, Vol. 5, No 17, s.163 - 168.(in Polish).