Microwaves energy in curing process of water glass molding sands

• Autorzy: Granat K. , Nowak D. , Pigiel M. , Stachowicz M. , Wikiera R.
• Języki publikacji: EN

Abstrakty

EN

This work presents the results of investigation of microwave heating on hardening process of water glass molding sands. Essential influence of this heating process on basic properties such as: compression, bending and tensile strength as well as permeability and abrasion resistance has been found. It has been proved, that all investigated sorts of sodium water glass with a module between 2.0 and 3.3 can be used as a binder of molding sands in microwave curing process. It has been found during analysis of research results of sands with 2.5 % water glass addition that they are practically the same as in case of identical molding sands dried for 120 minutes at the temperature of 110°C, used for comparative purposes. Application of microwave curing of molding sands with water glass, however, guarantees reduction of hardening time (from 120 to 4 minutes) as well as significant reduction of energy consumption. Attempts of two stage hardening of the investigated water glass molding sands have also been carried out, that is after an initial hardening during a classical CO_2 process (identical sands have also been tested for comparison after CO_2 blowing process) and additional microwave heating. It has been found that application of this kind of treatment for curing sands with 2.5 % sodium water glass content and module from 2.0 up to 3.3 results in the improvement of properties in comparison to classical CO_2 process.

Słowa kluczowe

EN

innovative materials in foundry; innovative technologies in foundry; microwaves; water glass; mole module

PL

materiały innowacyjne w odlewnictwie; technologie innowacyjne w odlewnictwie; mikrofale; szkło wodne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2007
• Tom: Vol. 7, iss. 1
• Strony: 183--188
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Granat K.

autor

Nowak D.

autor

Pigiel M.

autor

Stachowicz M.

autor

Wikiera R.

• Foundry and Automation Dep. of Technical University of Wrocław, ul. Łukasiewicza 5, 50-371 Wrocław, Polska,

Bibliografia

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• [2] M. Pigiel, Masy formierskie ze szkłem wodnym utwardzane z użyciem mikrofal [Water glass molding sands hardened with microwaves, Archiwum Technologii Maszyn i Automatyzacji, Wrocław, 1998 (in Polish).
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