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Characterization of bentonites for green sand mixtures (CROSBI ID 604455)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Holjevac-Grgurić, Tamara ; Radoš, Martina ; Brnardić, Ivan Characterization of bentonites for green sand mixtures // Proceedings book of 12th International Foundrymen Conference / Dolić, Natalija ; Glavaš, Zoran ; Zovko Brodarac, Zdenka (ur.). Sisak: Metalurški fakultet Sveučilišta u Zagrebu, 2012. str. 135-135

Podaci o odgovornosti

Holjevac-Grgurić, Tamara ; Radoš, Martina ; Brnardić, Ivan

engleski

Characterization of bentonites for green sand mixtures

In this work, the effect of bentonite quality on mold mixture properties was investigated. Investigations were done with commercial type of bentonite. Testing mixtures were prepared with bentonite, water and sand. Investigations of technological properties were done in foundry „Plamen d.o.o.“, Požega. Compressive strength and wet tensile strength were determined before and after calcination at 550 °C, during 2 hours. Chemical analysis was performed by X-ray Fluorescence (XRF). Fourier Infrared Spectroscopy (FTIR) was used to get insight in bentonite structure. Particle size of investigated samples was determined by Laser Diffraction. Gas adsorption-desorption analysis was performed to determine specific area, pore volume and distribution of pore volume. Thermal stability of bentonites was studied by simultaneous thermal analysis Differential Thermal Analysis/Thermogravimetry (DTA/TG). Simulation of mold mixture temperatures during casting was obtained by software MAGMA SOFT®. Temperature of dehidroxylation process proved to be the key factor for bentonite quality as a material for application in foundry industry.

Molding compound ; bentonite ; montmorillonite ; thermal stability ; microstructure

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Podaci o prilogu

135-135.

2012.

objavljeno

Podaci o matičnoj publikaciji

Proceedings book of 12th International Foundrymen Conference

Dolić, Natalija ; Glavaš, Zoran ; Zovko Brodarac, Zdenka

Sisak: Metalurški fakultet Sveučilišta u Zagrebu

978-9537082-14-7

Podaci o skupu

12th International foundrymen conference

poster

24.05.2012-25.05.2012

Opatija, Hrvatska

Povezanost rada

Kemijsko inženjerstvo, Metalurgija