Product

Nice foundry sand(NFS)

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Description:

Nice foundry sand(NFS), also called Baozhu Sand, is a kind of artificial foundry sand that is ball-shaped,high heat-resistant, low heat dilating rate. It is mainly made of Al2O3, through high temperature calcined,fused, prilling and selecting. NFS is the senior substitute of silica sand and honored as Green Sand.

 

Specifications:

1.        Ball Shaped—very good liquidity and easy to fill

2.        Low heat dilating rate—make the foundry more precisely, less cracking and high output

3.        Good cracking-resistant—high density, low cracking rate, re-used materials make it more good to environment for the less sand powder occured

4.        Good fire-resistance—Major element is Al2O3, has a good refractoriness

5.        Low density—cost effective

6.        Neutral materials—PH is 7.6 and has a stable chemical characteristic

 

Physical Index:

Grain Shape

Ball

Color

Black Brown

Angle Factor

<1.1

Refractoriness

>1820℃

Bulk Density

1.95-2.05g/cm3

Thermal expansion

0.13%10 minutes at 1000℃

Heat Conductivity

1200℃ 5.27W/ M·K

Size

5-320 mesh

 

Chemical Composition:

Al2O3

>70-85%

Fe2O3

<3%

TiO2  

<1.5-3.5%

SiO2

<8-20%