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Continuous Casting
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What does Toyo Tanso offer for Continuous
Casting?
Toyo Tanso was the first Japanese manufacturer in
the industry to use the cold isostatic press (CIP) technology to produce isotropic graphite.
A wide range of graphite materials suitable for a variety of casting conditions and
alloys has been developed. The Toyo Tanso graphites are consistent in quality.
This quality minimizes disruptions to your casting process and your business.
The graphite sizes can be made to meet your requirements.
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| IG-11 |
This basic grade has
provided solutions to casters throughout the world for over 20 years. It can be used
to cast a wide range of different alloys and presents a smooth sliding surface. |
| IG-15 |
Highest in density and
thermal conductivity. Presents a smooth sliding surface and rapid cooling. |
| IG23 |
Medium density with high
thermal conductivity and high resilience. Has a smooth stable sliding surface. |
| IG-70 |
Medium density, high
resilience and higher thermal conductivity than IG-11. |
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Manufacturing
Process
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Typical
Properties
| Grade |
Bulk Density g/cm3 |
Hardness Shore |
Specific Resistivity mWm |
Flexural Strength MPa |
Compressive
Strength
MPa |
Elastic Modulas GPa |
C.T.E 10-6/C 10-6/K |
Thermal Conductivity Kcal/hmC
W(mk) |
Standard Block Size mm |
| IG-11 |
1.77 |
51 |
11.0 |
39.2 |
78.4 |
9.8 |
4.5 |
100
116 |
305x620x1000 230x540x1000 |
| IG-15 |
1.90 |
60 |
9.5 |
53.9 |
103 |
11.8 |
4.8 |
120
139 |
230x620x1000
230x540x1000 |
| IG-23 |
1.82 |
55 |
9.2 |
53.9 |
90.2 |
10.8 |
4.8 |
120
139 |
300x540x850
230x540x1000 |
| IG-70 |
1.83 |
58 |
10.0 |
47.0 |
102.9 |
11.8 |
4.6 |
110
128 |
305x620x1000 |
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Cast
Alloy |
Ingot
Shape |
Casting
Method (V:Vertical, H:Horizontal) |
Suitable
Grade |
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Tough
Pitch Copper |
Cake/Billet |
V |
IG-11,
IG23 |
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Phosphorus
Deoxidized Bronze |
Cake/Billet
Strip |
V
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H |
IG-11,
IG23
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IG-15, IG23
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Oxygen-Free
High Conductivity Copper |
Cake |
V |
IG-11
IG23 |
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Pure
Copper |
Billet |
H |
*IG-110,
**IG230 |
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Beryllium
Copper <Be<2%) |
Billet/Strip |
H |
IG-15,
IG25 |
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Free
Cutting Brass |
Billet/Strip |
H |
IG-11,
IG23, IG-70 |
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Phosphor
Bronze |
Billet/Strip |
H |
IG-11,
IG-15, IG23 |
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Free
Cutting Nickel Silver |
Billet/Strip |
H/V |
IG-15,
IG23, IG25 |
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Aluminum
Alloy |
Strip |
H/V |
IG-11,
IG23 |
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Cast
Iron |
Small
Billet Large Billet |
H |
IG-11,
IG-32, IG23 |
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Precious
Metal |
Billet/Strip |
H |
IG-11,
IG-15, IG23 |
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Bearing
Bronze |
<Billet |
H/V |
IG-11,
IG23
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*IG-110 : High-purified IG-11
**IG230 : High-purified IG23 |
| Note : Die configuration will affect the grade of
the graphite to be used for the best performance. Materials other than those listed
above may be available to solve specific casting difficulties. |
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| Notes: |
- Avoid handling of graphite dies with bare hands.
Perspiration contains sodium and potassium which will catalyze the oxidation of the
graphite.
- Graphite dies will absorb moisture and gases from
the air, so die packing and storage conditions need to be controlled to minimize this
effect.
- Graphite dies should be dried in an electric oven
for 8 to 24 hours at a temperature of 150C to 200C prior to being installed in the metal cooler.
- The bolts used to hold the graphite die and metal
cooler together should be tightened with a torque wrench to a uniform and controlled
torque. Spring washers can be used to help minimize loosening.
- Round dies can be installed into coolers by shrink
fitting or press fitting. Care must be used in assembly to prevent the graphite from
cracking.
- The die cooling efficiency is improved when the
clearance between the graphite and the cooler is minimized. This clearance should be
checked with a thickness gauge upon each completed assembly
- The diameter and concentricity of round cooling
jackets and the flatness of the cooling plates should be checked. Out of tolerance
coolers should be re-machined.
- If refractory materials are used, they should be
thoroughly dried to prevent steam reaction with the graphite die or cracking of the die.
The refractory manufacturer can help select the drying condition necessary to
remove all moisture.
- The graphite die should be preheated with an
electric heater after being installed on the furnace body. Care should be taken to
maintain a temperature below 400C to prevent graphite
oxidation. If a gas burner is used, an end plate should be used to seal the die
surfaces from the direct gas flame. Preheating of dies will help to reduce thermal
cracking of the graphite die at the time the metal is poured into the die.
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Impurities in nonferrous liquid metals, such as
Fe, Ni, S, etc. might cause the cast ingot to stick to the graphite
die. These impurities should be minimized.
Remarks:
The data in this page are offered in good faith as typical
values and not as a product specification. No warranty, either expressed or implied,
is hereby made. The recommended industrial hygiene and safe handling procedures are
believed to be generally applicable. However, each user should review these
recommendations in the specific context of the intended use and determine whether they are
appropriate.
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