Why choose Ceramic foundry sand:
(1) Ceramic foundry sand has a high refractory temperature and can meet the refractoriness requirements of various castings.
(2) Ceramic foundry sand has a nearly spherical shape, has good fluidity and filling performance, and the amount of binder to be added is also low, which is not only economical, but also the castings are not easily damaged after pouring.
(3) Ceramic foundry sand has the characteristics of low thermal expansion. For castings, which can prevent casting defects caused by the expansion of molding sand, and can improve the dimensional accuracy of complex castings.
(4)The high strength and low damage of Ceramic foundry sand will not break the sand when it is recycled and reused. The recycling rate is high and the amount of dust is small, which can improve the working environment and reduce the foundry waste. This is in line with the environmental protection requirements of the times.
| Grain shape | spherical | Coefficient of expansion | (20-1000ºC)6×10ºC |
| color | Black-brown | granularity | 6~270(3.36~0.053mm) 6~270mesh(3.36~0.053mm) |
| Refractoriness | >1800ºC | AL2O3 | 70-75% |
| Bulk density | 1.95-2.05g/cm3 | Fe2O3 | ≤5% |
| True density | 3.4g/cm3 | SiO2 | 12~25% |
| Thermal conductivity | (1200ºC)5.27W/M.K | TiO2 | 3~4.5% |
| pH value | 7~8 |
APPLICATION:
At present, ceramic foundry sand is widely used in resin sand (furan resin, phenolic resin), water glass sand (organic fat, CO2 hardening), coated sand. Suitable for all kinds of metal castings, such as: carbon steel, alloy steel (high manganese steel, high chromium cast iron), cast iron, cast copper and so on.
1.Furan resin molding
3.Alkaline phenolic resin molding, core making
4.Water glass molding
5.Lost foam casting
Application conclusion of Ceramic foundry sand:
Ceramic foundry sand is a non-quartz type artificial sand and it is suitable for various casting methods such as: V method, VRH, lost foam, investment mold, general sand type (clay sand, water glass + CO2 hardening), resin sand, etc, and it is also suitable for the production of castings of various binders and various metal materials, which can not only greatly improve the quality of castings, but also easy sand cleaning, and the sand mixing process is simple and convenient (large-scale cast steel plant single-piece small batch local sand, a small amount of sand artificially mixed). It can be used for most castings, especially for castings with high quality requirements.