foundry sand

Foundry sand: 1. high strength 2.low breaking rate 3.good sphericity 4.reasonable price

Foundry sand:

Main chemical composition: AL2O3≥75% Fe2O3≤3% K2O≤1% TiO2≤4%(others: trace)

Grain shape: sphericity

Color: brownish black

Angular coefficient: ≤1.1

Density: 1.95-2.05(g/cm3)

Refractoriness: 1.13%(1000°C heat for 10 minutes)

Specification: 10-20 mesh, 20-30 mesh, 30-40 mesh, 40-70 mesh, 100-140 mesh, 170 mesh

Foundry sand Advantages:

good fire resistance;spherical particle shape;low thermal expansion rate;good resistance for crushing;can be used as neutral material, PH=7.8, stable chemical properties, acid and alkali resistant erosion, low acid consumption.good compactness and high strength. Even repeated use rarely broken, reduce dust pollution in the production process when casting. Good reproducibility, reduce industry waste discharge and is good for environment protection.small bulk density, reduce production costs;wide usage range

Foundry sand picture:

foundry sand