Opta Waive
Cerabeads

Opta Minerals CERABEADS® - Spherical Ceramic Sand for Foundry

Spherical Ceramic Sand for Foundry - Opta Minerals CERABEADS®, a cost effective replacement for zircon sand.

Advantages of Opta Minerals CERABEADS®

  • Anti-Burn-On
  • Thermal Expansion Control
  • Reduced Waste and Health Hazard
  • Wide Choice of Particle size
  • High Reclamation Yield

Bulk Density

CERABEADS® is lighter than other special sand.

Testing method
1) Bulk density is measured after vibration.
2) Volume ratio is calculated by following formula.

Volume ratio = CERABEADS® density / Other sand density

Bulk Density

Heat Resistance

CERABEADS® has very High Heat Resistance.

Testing method
1) Sand is heated at 1500 C (2732 F).
2) Fused sand is separated by sieve.
3) Heat Resistance is calculated by following formula.

Heat Resistance = weight under sieve/Total weight x 100 (%)

Heat Resistance

Crushing Ratio

CERABEADS® has High Durability (= Low Crushing Ratio). It is possible to Reduce Sand Waste and Increase Sand Reclamation Yield.

Testing method
1) Sand is crushed by pot mill with alumina ball.
2) AFS GFN is measured.
3) Crushing ratio is calculated by following formula.

Crushing ratio = Crushed AFS-GFN / Original AFS-GFN x 100 (%)

Crushing Ratio

Thermal Expansion

CERABEADS® is good sand to control thermal expansion of core by mixing to silica sand.

Testing method
1) Test piece is formed in shell process.
2) Thermal expansion is measured under 1000 C (1832 F).

Thermal Expansion

Chill Effect

CERABEADS® provides good heat transfer when used with black iron oxide.

Testing method
1) Test piece is formed in sodium silicate process
2) The size of the test piece is 230 x 115 x 50mm.
3) Heat Transfer is measured under room temperature.

  Heat Transfer
(W/m-K)
Chromite 0.790
CERABEADS® #650+Spherical Black Iron Oxide 4% 0.721
CERABEADS® #650+Spherical Black Iron Oxide 8% 0.849
CERABEADS® #650 0.691

Process Compatibility:

  • Alkid Isocyanate
  • Furan
  • Green sand
  • Phenolic Ester & CB
  • Phenolic Urethane - NB & CB
  • Shell
  • Sodium Silicate etc

Particle Size Distribution, % (Typical Value)

mesh 1.0-0.2 mm #400 #500 #550 #650 #750 #850 #950 #1450 #1300 #1700 µ m
18.5 7.7                     850
28 29.3                     600
36 41.1 16.9 8.3 5.6               425
50 18.8 66.4 35.0 25.8 3.3 2.3 2.2 0.9       300
70 2.6 15.9 28.8 33.9 39.8 26.6 26.0 12.0       212
100 0.5 0.8 21.1 26.2 42.8 36.1 34.4 16.7 3.8 1.8   150
140 Tr.   6.3 7.8 12.7 26.8 18.1 52.6 75.3 48.5 1.3 106
200     0.6 0.7 1.4 7.2 13.7 16.1 18.3 39.7 65.1 75
280           0.9 4.8 1.8 2.6 6.2 29.5 53
-280             0.8     3.8 4.2 -53
AFS-GFN 28.1 40.1 52.7 56.1 65.8 78.3 85.6 96.7 108.7 129.1   155.5

Particle Sieze Distribution Mesh

CERABEADS® IS MANUFACTURED BY:
ITOCHU CERATECH CORPORATION
11-4, Shiokusa-cho, Seta-shi
Aichi, 489-0895, JAPAN
Phone: +81-561-213-715
Fax: +81-0561-214-141
Email: cerabeads@itc-cera.com
http://www.itc-cera.co.jp/english/index.html

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