Fused Silica sand and fused silica powder manufacturer Fused Silica sand and fused silica powder manufacturer

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  • fused silica sand and powder for investment casting/light-metal foundry
  • fused silica sand and powder for investment casting/light-metal foundry
  • fused silica sand and powder for investment casting/light-metal foundry
  • fused silica sand and powder for investment casting/light-metal foundry
fused silica sand and powder for investment casting/light-metal foundry fused silica sand and powder for investment casting/light-metal foundry fused silica sand and powder for investment casting/light-metal foundry fused silica sand and powder for investment casting/light-metal foundry

fused silica sand and powder for investment casting/light-metal foundry

what is Fused silica sand:
During the melting process of quartz sand above temperatures of 1700 °C, fused fused silica develops which contains SiO2 a amorphous modification once it is solidified.
 
The low extenion value is an advantage (< 0.1 percent, see Sand expansion). Thanks to this favorable behavior, fused-silica sand can be used as basic molding material for reducing sand expansion defects. It has to be take into consideration that already at temperatures of 1300 °C a slight sintering (see Sintering) sets in. This is the reason why it is used nearly exclusively in the area of light-metal foundry.

Fused silica spec:
 
1. Physical Properties
1.1 Composition SiO2
1.2 Structure Amorphous
1.3 Colour Transparent or white
1.4 Melting Temperature approx.1750ºC
1.5 Specific Gravity 2.21g/cm3
1.6 Hardness 7 Mohs
1.7 Thermal Expansion 0.5*10-6

2.

Chemical Properties
    Grade A Plus
2.1 SiO2 >99.9%
2.2 Al2O3 <100ppm
The finer the power,the higher the Al2O3,as powder is produced by ball mill with Alumina ball.
2.3 Fe2O3 <30ppm for grains
<60ppm for powder
2.4 CaO <15ppm
2.5 Na2O <15ppm
2.6 K2O <15ppm

3.   Particle Size Distribution
  Standard
  10-20 30-50 50-100 -120 -200 -325
Mesh Microns            
+8 2360 <2          
+12 1700 6-25          
+16 1180 33-50          
+20 850 25-45 <1        
+30 600 13 25-40        
+40 425   32-45        
+50 300   15-30 <13      
+70 212     30-60      
+80 180   0-11     <1  
+100 150     28-51 <10 <1  
+140 106     4-16 7-13 <10  
+200 75     <2 10-15 <10 <3
+325 45       14-20 15-30 4-11
Pan   <3 <2 <1 45-55 70-80 86-97
*Pan designates the percentage of fused silica passing the last reported screen for each size.

Contact Us

Name: Frank Wang

Tel: +86 518 8232 6257

Fax: +86 518 8232 6257

Mobile: 008613851265016

E-mail: minerals@chemsize.com

Skype: renai11

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Whatsapp: 008613851265016

Add: 1-715, Shanghai Square, Huiquan Road, Economic and Technological Development Zone, Lianyungang City, Jiangsu, China 222000

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