TY - JOUR
T1 - Effect of Additives on Heat Hardened Inorganic Solid Foundry Binder
AU - Anwar, Nurul
AU - Major-Gabryś, Katarzyna
AU - Jalava, Kalle
AU - Orkas, Juhani
PY - 2024/3/2
Y1 - 2024/3/2
N2 - Renewed interest in inorganic binders for sand molding has also intensified research on different forms of it. In this study, solid inorganic sodium silicate binder was tested with different additives to see how these affected the silica mold quality. The five additives used were: glucose, sucrose, boric acid, aluminum oxide and iron(III)oxide powders. The mold quality was assessed through tests like bending strength, tensile strength, hot distortion, wear resistance, gas evolution and collapsibility tests. In addition, SEM imaging was done on some select mold fracture samples. In the end, a casting trial was carried out followed by a surface roughness and defects analysis. A reduction in mold strength was noticed with glucose and boric acid, while collapsibility was improved by glucose, sucrose and boric acid additives. Casting trials have shown the best surface finish to be obtained with sucrose additive. All the casts in general showed some penetration; however, repeat casts have proven that altering some casting parameters could result in casts with excellent surface finish using solid silicates.
AB - Renewed interest in inorganic binders for sand molding has also intensified research on different forms of it. In this study, solid inorganic sodium silicate binder was tested with different additives to see how these affected the silica mold quality. The five additives used were: glucose, sucrose, boric acid, aluminum oxide and iron(III)oxide powders. The mold quality was assessed through tests like bending strength, tensile strength, hot distortion, wear resistance, gas evolution and collapsibility tests. In addition, SEM imaging was done on some select mold fracture samples. In the end, a casting trial was carried out followed by a surface roughness and defects analysis. A reduction in mold strength was noticed with glucose and boric acid, while collapsibility was improved by glucose, sucrose and boric acid additives. Casting trials have shown the best surface finish to be obtained with sucrose additive. All the casts in general showed some penetration; however, repeat casts have proven that altering some casting parameters could result in casts with excellent surface finish using solid silicates.
KW - additives
KW - foundry binder
KW - inorganic
KW - solid silicates
KW - sustainable molding
UR - http://www.scopus.com/inward/record.url?scp=85186391007&partnerID=8YFLogxK
U2 - 10.1007/s40962-024-01277-w
DO - 10.1007/s40962-024-01277-w
M3 - Article
SN - 1939-5981
JO - INTERNATIONAL JOURNAL OF METALCASTING
JF - INTERNATIONAL JOURNAL OF METALCASTING
ER -