High-temperature resistance is excellent, suitable for all types of casting temperatures.
It can be used stably for a long time at temperatures ranging from 1600 to 1800℃, and can withstand a short-term temperature of up to 2200℃. When melting high-temperature copper alloys and precious metals, there is no softening, collapse, or deformation, fully meeting the industrial casting high-temperature melting requirements.
Fast heat conduction and uniform heating, significantly improving the melting efficiency.
The graphite has excellent heat conduction performance, with a thermal conductivity of up to 120-150 W/(m·K). The temperature in the furnace rises quickly, and the temperature inside and outside the crucible is uniform. Compared with traditional clay crucibles, the melting time is shortened by 30% to 35%, effectively saving electricity, gas, and coal costs, and improving the shipping efficiency of castings.
Super strong resistance to thermal shock, without cracking under alternating heat and cold conditions.
1. Before using the new crucible, it should be dried at a low temperature (200-400℃) for 3-5 hours to thoroughly remove moisture and prevent cracking under high temperature.
2. It is prohibited to dry the furnace with no materials for a long time at high temperature, to reduce the oxidation loss of the inner wall.
3. The loading should be uniform, and excessive squeezing should be avoided to prevent the坩埚 from cracking due to the thermal expansion of the raw materials.
4. When pouring out and casting, handle with care and avoid heavy impacts on the corners.
5. If it is to be placed for a long time, it should be stored in a dry and ventilated place, and properly protected from moisture.
comparison of product parameters
| Performance indicators | Ordinary graphite block | Standard anti-oxidation graphite block | High-end thickened anti-oxidation graphite block |
| Carbon content | ≥99.85 | ≥99.95% | 99.99%l |
| Ash content | ≤200ppm | ≤50ppm | ≤5ppm |
| Volume density | 1.70～1.75g/cm³ | 1.78～1.82g/cm³ | 1.82～1.86g/cm³ |
| Compressive strength | ≥40MPa | ≥55MPa | ≥65MPa |
| Thermal conductivityfficient | 100～120W/(m·K) | 125～145W/(m·K) | 145～160W/(m·K) |
| Coefficient of linear expansion | 3.0～3.5×10⁻⁶/℃ | 2.5～2.8×10⁻⁶/℃ | 2.2～2.5×10⁻⁶/℃ |
| Antioxidant property | 1200℃ annual oxidation rate ≥ 0.8mm | 1200℃ annual oxidation rate ≤ 0.15mm | 1200℃ annual oxidation rate ≤ 0.15mm |
Graphite Solution Experts
Our company's services are available in 127 countries worldwide, with 210 international cooperation partners. We have 40 years of research experience in graphite products and an annual sales volume of 20 million. We have 30 expert teams and an export service team of 40 people.
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Why choose us?
1. Super high quality: Comprehensive control over every aspect from materials to processes.
2. Core technology fully controllable: Proficient in key processes such as high-temperature graphitization and purification, supporting 72-hour non-standard customization response.
3. Ultimate quality guarantee: High-purity products reach 5N + purity, resistant to 3000℃ high temperature + strong corrosion, with full batch traceable testing.
4. Uninterrupted full-cycle service: Large-scale production + 5-7 days small-batch delivery, 24-hour technical response + on-site support.
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