Foundry Ceramic Sand, technically named as “Sintered Ceramic Sand for Foundry”, also named as ceramsite, cerabeads, ceramcast, some countries is also named Golden Sand, is good artificial spherical grain shape which is made from calcined bauxite . Its main content is aluminum oxide and Silicon oxide. Ceramic sand, has much better properties than that of silica sand to gain a better performance in foundry. It has high refractoriness, little thermal expansion, good angular coefficient, excellent flowability, High resistance to wear, crush and thermal shock, high reclamation rate.
Karolo e ka Sehloohong ea Lik'hemik'hale | Al₂O₃≥53%, Fe₂O₃<4%, TiO₂<3%, SiO₂≤37% |
Sebopeho sa lijo-thollo | Spherical |
Angular Coefficient | ≤1.1 |
Boholo bo sa Lekaneng | 45μm -2000μm |
Refractoriness | ≥1800℃ |
Boima ba Bongata | 1.5-1.6 g/cm3 |
Katoloso ea Thermal (RT-1200℃) | 4.5-6.5x10-6/k |
Mmala | Lehlabathe |
PH | 6.6-7.3 |
Sebopeho sa Mineralogical | E bonolo + Corundum |
Litšenyehelo tsa Asiti | <1 ml/50g |
LOI | <0.1% |
Kaist ceramic foundry sand is about half as light as zircon and chromite, is about third as light as fused ceramic sand. Compared to these natural sand and other foundry media (the material is able to turn out about twice the number of molds per unit weight). Kaist ceramic foundry sand can deliver mold and core packages with a range of benefits that include higher-strength sand casting packages, with high heat resistance, low thermal expansion, improved final part resolution and a smoother surface finish. It can also be handled very easily, saving labor and transfer power costs. However, the manufacturer recommends paying attention to the amount of binder addition.
Joalo ka thepa e sa nke lehlakore, lehlabathe la ceramic la KAIST le sebetsa ho li-resin tsa acid le alkali.
E ka sebelisoa haholo bakeng sa tšepe e entsoeng ka tšepe, tšepe e entsoeng ka tšepe le tšepe e sa tsitsang, joalo ka ho lahlela foam e lahlehileng, lehlabathe le koahetsoeng, lehlabathe la resin, lebokose le batang la mantlha, ho lahla ka nepo, le khatiso ea 3D.
Kabo ea boholo ba phatsa e ka etsoa ho latela tlhoko ea hau.
Mesh |
20 | 30 | 40 | 50 | 70 | 100 | 140 | 200 | 270 | Pan | AFS | |
μm |
850 | 600 | 425 | 300 | 212 | 150 | 106 | 75 | 53 | Pan | ||
Khoutu | 20/40 | 15-40 | 30-55 | 15-35 | ≤5 | 20±5 | ||||||
30/50 | ≤1 | 25-35 | 35-50 | 15-25 | ≤10 | ≤1 | 30±5 | |||||
40/70 | ≤5 | 20-30 | 40-50 | 15-25 | ≤8 | ≤1 | 43±3 | |||||
70/40 | ≤5 | 15-25 | 40-50 | 20-30 | ≤10 | ≤2 | 46±3 | |||||
50/100 | ≤5 | 25-35 | 35-50 | 15-25 | ≤6 | ≤1 | 50±3 | |||||
100/50 | ≤5 | 15-25 | 35-50 | 25-35 | ≤10 | ≤1 | 55±3 | |||||
70/140 | ≤5 | 25-35 | 35-50 | 8-15 | ≤5 | ≤1 | 65±4 | |||||
140/70 | ≤5 | 15-35 | 35-50 | 20-25 | ≤8 | ≤2 | 70±5 | |||||
100/200 | ≤10 | 20-35 | 35-50 | 15-20 | ≤10 | ≤2 | 110±5 |
Lihlopha tsa lihlahisoa