Technology Ceramics

Technology Ceramics :

Water/Powder Ratio by Weight :14/100
Working Time :5-5½ minutes
Setting Time :10 minutes max.

Water/Powder Ratio by Weight :16-18/100
Working Time :5-6 minutes
Setting Time :6½-10 minutes

Binder/Powder Ratio :32/100 by weight (or 29 ml of binder per 100 g of powder)
Pouring Time :12-15 minutes
Setting Time :50-60 minutes
2-hour Green Strength :120 psi
1600°F (871°C) Fired Strength :400 psi
Binder Density :1.11 g/ml
Volume of Mix :18.7 cubic inches per 1 lb. of powder (or 675 cubic centimeters per 1 kg of powder)

We have a standard range of pouring cups (listed in attachment), but can manufacture to bespoke requirements.

Ceramic Pouring Cup specifications:

  Chemical Analysis (Wt.%)
 Al203Sio2Fe2O3
Fused Silica FS 76J21.976.40.60

The advantages of vibro-cast crucibles include:
# Melt capacities of up to 1 tonne.
# Complex shapes, e.g. internal pouring siphon.

 Chemical Analysis (Wt.%)
 

AL2O3

SiO2

Fe2O3

CaO + MgO

K2O + Na2O

 Cr2O3

Alumina AL97C

96.6

2.5

<0.1

0.1

0.2

 

Alumina AL92C

92.1

7.2

<0.1

0.1

0.2

 

Chrome Alumina CA93C

93.0

2.8

<0.1

0.1

0.2

3.5

Sillimanite SL70C

70.6

27.1

0.7

0.2

0.2

 

Sillimanite SL63C

63.8

34.2

0.5

0.3

1.1

 

 

 

Bulk Density

Apperent Porosity

Thermal Expansion

Thermal Conductivity

Max. Service Temp / *C

Alumina AL97C

3.1

19.6

8.0

4.06

1800

Alumina AL92C

2.95

24.8

8.0

4.2

1750

Chrome Alumina CA93C

3.14

19.3

8.2

3.0

1750

Sillimanite SL70C

.45

19.5

4.5

1.6

1700

Sillimanite SL63C

2.32

22.0

5.0

1.4

1650