What is the comparison of micro powder content between Fused Ceramic Sand and silica sand?
In the process of silica sand regeneration demoulding, it is also accompanied by the process of removing silica sand corners, also known as angular and film removal regeneration, so there is more dust in the reclaimed sand.
Fused Ceramic Sand is nearly spherical. In theory, the process of regeneration is only the process of removing the residual resin film. Fused Ceramic Sand has high hardness (8.7 Mohs hardness) and is not easy to break. Fused Ceramic Sand has high specific gravity, and the resin film removed is easier to separate from Fused Ceramic Sand, so the quality of its recycled sand is very good. That is, it is often said that the recycled sand particles of resin beads have "high surface cleanliness" and are easy to use in production.
What content in Fused Ceramic Sand has influence on refractoriness?
According to the Al2O3-SiO2 binary phase diagram, the higher the Al2O3 content, the lower the SiO2 content, and the higher the theoretical refractoriness of the material, but the negative impact of Fe2O3, TiO2 and other impurities on the refractoriness is particularly noteworthy. Therefore, in addition to pursuing high Al2O3 content, special attention should be paid to the limit of Fe2O3, TiO2 and other impurities for aluminum silicon materials such as casting Fused Ceramic Sand.
Advantages of Fused Ceramic Sand as filling sand in Lost Foam Casting?
1. The angle coefficient of Fused Ceramic Sand is 1.06, which is close to spherical and has good fluidity, so it has good filling performance, and can enrich horizontal holes, blind holes and corners. Moreover, compared with quartz sand, the time to achieve the same compactness can be reduced by half.
2. The high fire resistance of Fused Ceramic Sand can meet the production needs of cast iron, nodular iron, carbon steel, alloy steel and stainless steel, which greatly improves the "adaptability" of the lost foam production line, and can produce castings of different materials, saving the trouble of replacing sand.
3. The high strength makes the crushing rate of Fused Ceramic Sand very low. The consumption of sand is greatly reduced. According to statistics, the consumption per ton of casting pearl sand is only 1-1.5 kg.
4. The crushing rate is low, no dust is generated, the production site is clean, the working environment of workers is greatly improved, and the amount of dust in the old sand is very low, so there is no need to open the dust removal equipment to save electricity.
5. Good breathability.
6. Fused Ceramic Sand is a green casting sand. The main component of Fused Ceramic Sand is alumina, which is harmless to human body.