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Graphite crucible
Possessing high conductivity and resistance of heat, the graphite crucible widely application in industry. It is used widely for melting iron, steel, copper, aluminum, tin, zinc, glass, silver and gold etc. We are guided by the principle of mutual benefit to welcome you to map sample processing!
The high pure graphite crucibles have the following characteristics: | |
Carbon content | 99.9% |
Density: | 1.75-1.85g/cm^3 |
Compressive strength: | Min50 M pa |
Unique advantage: | Thermal conductivity is fast, Long service life, Erosion Resistance, High oxidation resistance, High temperature resistance |
Size | as your request , drawing or sample |
Physical and chemical index:
The Graphite crucible have adopted three kinds of materials:Fine-grain Specialty Graphite, High pure graphite, Isostaic graphite. They have different qualitative indicators, I will show up as following
|
| Fine-grain Specialty Graphite | High pure graphite | Isostaic graphite |
Item | Unit | Typical value | Typical value | Typical value |
Max grain size | mm | 0.8 | ≤325mm | 5-22 |
Bulk density | g/cm3 | 1.73-1.76 | 1.68-1.85 | 1.8-1.85 |
Specific resistance | Μ Ω .m | 7.5 | ≤14 | ≤15 |
Bending strength | M pa | 11-12.5 | ≥25 | 12.5 |
Compressive strength | M pa | 27-34 | ≥50 | 34 |
Thermal Conductivity | W/(m .k) | 150-160 | ≥130 | 160 |
C.T.E.(100-600)℃ | 10-6/℃ | 2.2 | ≤2.5 | 2.1 |
Ash content | % | 0.09 | ≤0.15 | 0.09 |
Competitive Advantages
*Long service time
*Proper electrical conductivity
* Homogeneous structure and high mechanical strength
*Excellent thermal conductivity and Heat resistance
*High oxidation resistance: Advanced oxidation mechanism, making the graphite crucible get good protection
Applications of graphite crucible:
1. Widely used in metallurgy, casting, mechanical, chemical and other industrial sectors.
2. Widely used in smelting the alloy tool steels, nonferrous (e.g. gold, silver, aluminum, etc), nonferrous metal alloy, jewelry, glass and other suitable area.
3. As an utensils is used to accommodate high temperature object.
4. As the thermal insulation Buckets can be used for heat preservation anticorrosive industry.
Operating notice:
1. The crucible should be stocked in the dry situation
2. Carry the crucible lightly
3. Warm the crucible in the drying machine or near the furnace. The
warming temperature should be up to 500℃.
4. The crucible should be put under the furnace month flat.
5. When put the metal into the crucible, you should take the crucible capacity as your reference.If the crucible is too full,it will be damaged by expansion.
6. The clamps shape need as that of crucible. Avoid the concentrate
stressed destroy of the crucible
7. Clean the crucible regularly and lightly.
8. The crucible should be put in the center of the furnace and leave some distance between the crucible and furnace.
9. Turn the crucible once in one week and this will help lengthen the
service life.
10. The flame should not touch the crucible directly.
11.24 hours constant use will make crucibles have longer service life.
The smelt soup in the crucible should be cleared out when the furnace stop working, in order to avoid molten soup solidificating and will be expanded when fire to reheat, and affect the service life of crucible or even burst.
12. We suggest that about 2 months for crucible melting aluminum alloy
(every week for melting copper alloy), hanging out to check whether there is something wrong in the surface, and clean furnace hearth as well as turn the crucible, this operation ishelpful to prolong the service life of crucible.
*Can provide a suitable product based on customer's requirements.
* Can be customized according to customer special shape products.
* We have professional experience can provide technical guidance.
*We can provide the best quality after-sales service.
*We provide samples for customer test.
