High Purity Graphite Crucible for Melting Metals
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 pc
- Supply Capability:
- 1000 pc/month
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Quick Details
| Application: | melting metals | Height: | depends on your requirement | Top Diameter: | 10-1200mm |
| Bottom Diameter: | 10-1200mm | Place of Origin: | China (Mainland) | Brand Name: | |
| product name: | SiC graphite crucible china graphite crucible | top diameter: | 10-1200mm | bottom diameter: | 10-1200mm |
| height: | depends on your requirement | application: | melting gold,silver and other metals | Specific resistance: | ≤14μΩ.m |
| Bending strength: | ≥25MPa | Compressive strength: | ≥50MPa | Bulk densit: | ≥1.68g/cm3 |
| Ash content: | ≤0.15% |
Packaging & Delivery
| Packaging Details: | woden case for SiC graphite crucible china graphite crucible |
| Delivery Detail: | within 20 days |
Introduction
1. Graphite crucible can be used for non-ferrous metal smelting and casting, dissolving gold
or silver ornaments, analysis of special type steel, sintering hard metal.
2. graphite crucible for smelting gold is specialized in melting gold in headgear and jewelryindustry. That requests graphite material has high density and purity, ablation-resistance, and it can be used many times. We can machine various crucibles accordingto customer's requirement.
3. Machined from high pure graphite and widely used in the gold,silver,platinum and other noble metal's melting.If it's used in oxygen atmosphere,it wil start to be oxygenized when the temperature is higher than 700-800°c. If it's used in the protective atmosphere, it can stand more than 2000°c.
4. widely used in such fields as industrial furnaces, mono-crystalline silicon machinery, mono-crystalline silicon machinery, electron, semi-conductor, metallurgy, oil, chemistry, textile, electrical machinery, electrical equipment, electrical furnace, traffic, communication industry, medicine, etc.
Advantages
1.good thermal conductivity
2.High-temperature resistance
3. Small thermal expansion coefficient.
4.Strong corrosion resistance to acid and alkali liquid
5.Good chemical stability
Technology parameter
Item | Unit | High pure graphite | ||
baked twice | baked three time | baked four times | ||
impregnated once | impregnated twice | impregnated three times | ||
Grain size | mm | ≤325mesh | ≤325mesh | ≤325mesh |
Bulk density | g/cm3 | ≥1.68 | ≥1.78 | ≥1.85 |
Specific resistance | μΩ.m | ≤14 | ≤14 | ≤13 |
Bending strength | MPa | ≥25 | ≥40 | ≥45 |
Compressive strength | MPa | ≥50 | ≥60 | ≥65 |
Ash content | % | ≤0.15 | ≤0.1 | ≤0.05 |
We accept small orders,please inquiry us freely. | ||||
Item | Unit | Fine-grain Specialty Graphite model 1 | Fine-grain Specialty Graphite model model2 | ||
Guarantee value | Typical value | Guarantee value | Typical value | ||
Max grain size | mm | 0.8 | 0.8 | 0.8 | 0.8 |
Bulk density | g/cm3 | ≥1.70 | 1.73 | ≥1.73 | 1.76 |
Specific resistance | μΩ.m | ≤8.5 | 7.5 | ≤8.0 | 7 |
Bending strength | MPa | ≥10.0 | 11 | ≥12.0 | 12.5 |
Compressive strength | MPa | ≥24.0 | 27 | ≥31.0 | 34 |
Thermal Condcutivity | W/(m.k) | ≥120 | 150 | ≥130 | 160 |
C.T.E.(100-600) °C | 10-6/°C | ≤2.5 | 2.2 | ≤2.5 | 2.1 |
Ash content | % | ≤0.3 | 0.09 | ≤0.3 | 0.09 |
We are always avliable to service you! | |||||
Parts sizes of graphite crucible table
Product name | Dimensions(mm) | Weight(g) | |||
Φ1 | Φ2 | Φ3 | H | ||
1 kg graphite crucible | 58 | 47 | 35 | 88 | 160 |
2kg graphite crucible
| 65 | 58 | 44 | 110 | 240 |
2.5kg graphite crucible
| 65 | 58 | 44 | 126 | 300 |
3kg graphite crucible
| 85 | 75 | 60 | 105 | 390 |
4kg graphite crucible
| 85 | 75 | 60 | 130 | 500 |
4kg graphite crucible
| 85 | 75 | 60 | 136 | 500 |
5kg graphite crucible
| 100 | 89 | 69 | 130 | 700 |
5.5kg graphite crucible
| 105 | 90 | 70 | 156 | 800 |
6kg graphite crucible
| 110 | 97 | 79 | 174 | 970 |
We have all kinds of sizes graphite crucibles in stock,please feel free to contact us. | |||||
packaging & shipping
Packaging
1. For each type, we can send you the detailed high-resolution pictures since we have the sample in our hand.
2. For packaging, we have the professional packaging starff, pls. don't worry about the shipping.
Our service
1.Delivery time is 5~7 days for sample and 15 working days for bulk order;
2. Strong production capacity and strict quality control system;
3. Your inquiry and problems related to our products or prices will be replied in 24 hours;
4. Well-trained and experienced staffs to answer all your inquires;
5. After-sale tracking service for all of our clients;
6. OEM is available; small quantities, mixed bulk orders are also welcome;
7. Payment: L/C, D/A, D/P, T/T, Paypal , Western Union, MoneyGram;
8. Delivery way: UPS, DHL, TNT, FEDEX, EMS, CHINA POST.
After-Sales Service
1.1year warranty for most of our products;
2.We will arrange delivery of the goods on time:
3.Within the warranty period, we will bear all the qulity problem of our produts;
4.Beyond the warranty period, we will despatch the replacement parts to help fix the products;
5.Without any problem, we will gain the feedbacks of our products to help improve better products.
FAQ
Q:How to get in touch with us?
A:You can clik "Contact Supplier" above, or click "Chat Now!". We provide 24-hour service!
Q: How can I get free samples?
A: Only carbon brush for power tools/automobiles/motorcycle----no more than 4 sets for each model is free of charge.
Q:How to order?
A:Quotation→Price comfirming→Sign a contract→Mass production→Delivery
Q:How to pay?
A:30% T/T deposit.→70% balance by T/T against B/L copy.
Q:How to get after-sales service?
A:You can contact with your appointed sales.
You can also get in touch with our Quality Assurance Department: zdatzddt.com
Company Information
- Q: Can graphite crucibles be used for melting iron?
- No, graphite crucibles cannot be used for melting iron. While graphite crucibles are commonly used for melting metals such as gold, silver, and copper due to their high thermal conductivity and resistance to high temperatures, they are not suitable for melting iron. This is because iron has a much higher melting point compared to other metals, reaching around 1,535 degrees Celsius (2,795 degrees Fahrenheit). Graphite crucibles have a limit to their operating temperature, typically around 1,200 degrees Celsius (2,192 degrees Fahrenheit) or lower. Therefore, when exposed to the extreme heat required to melt iron, graphite crucibles would be at risk of breaking down, losing their structural integrity, and contaminating the molten iron. For melting iron, materials with higher melting point and better resistance to high temperatures, such as clay-graphite or silicon carbide crucibles, are preferred. These crucibles can withstand the intense heat required to melt iron and maintain their shape and integrity. It is important to select the appropriate crucible material based on the specific metal being melted to ensure safety, efficiency, and quality in the melting process.
- Q: How do you determine the melting capacity of a graphite crucible?
- To determine the melting capacity of a graphite crucible, there are several factors to consider. Firstly, the size and shape of the crucible play a significant role. The volume of molten material that a crucible can hold is directly related to its dimensions. Typically, crucibles are available in various sizes, so selecting the appropriate size for the desired melting capacity is crucial. Secondly, the material being melted and its corresponding melting point are important considerations. Different materials require different amounts of heat energy to reach their melting point. The melting capacity of a crucible should be determined based on the specific material being melted and its associated temperature. Thirdly, the quality and composition of the graphite used in the crucible is essential. High-quality graphite with good thermal conductivity and resistance to thermal shock can withstand higher temperatures and facilitate efficient heat transfer, resulting in a higher melting capacity. Lastly, the heating method and equipment used also influence the melting capacity. The heating rate, maximum temperature achievable, and the overall efficiency of the heating system can impact the crucible's ability to melt materials. To determine the melting capacity of a graphite crucible, one can refer to the manufacturer's specifications or consult with experts in the field. Additionally, conducting trial runs with small quantities of the material being melted can provide practical insights into the crucible's melting capacity. It is important to consider safety precautions and follow recommended guidelines when determining the melting capacity to avoid any damage to the crucible or potential hazards.
- Q: Can graphite crucibles be used for semiconductor manufacturing?
- Graphite crucibles, unfortunately, cannot fulfill the needs of semiconductor manufacturing. They find their utility in industries such as metallurgy and foundries, where they exhibit exceptional thermal conductivity and endure high temperatures. Nevertheless, in the realm of semiconductor manufacturing, demands take an entirely different shape. This field involves meticulously controlled and precise procedures, where contamination poses a significant threat. Graphite crucibles indiscriminately release carbon particles that taint the semiconductor materials, consequently compromising their performance. Thus, semiconductor manufacturing necessitates crucibles crafted from materials like quartz or ceramic. These alternatives boast minimal contamination levels and possess the resilience essential for enduring the rigorous temperatures and chemical environments characteristic of fabrication processes.
- Q: Graphite products are mainly used in what industry?
- For casting, casting, molding and high-temperature metallurgical material: Graphite due to thermal expansion coefficient is small, and the capability of cold and hot change, can be used as a mold of the glass, the use of graphite after black metal castings get precise size, smooth surface, high rate of finished products, can be used without processing or minor processing, thus saving a lot of metal. A powder metallurgy process, such as hard alloy, usually made of graphite material and used as a porcelain boat for press and sintering. The crystal growth of monocrystalline silicon, crucible, zone refining vessel, bracket, jig and induction heater are all made of high purity graphite. In addition, graphite can be used as vacuum heating graphite insulation plate and base, high temperature resistance furnace tube, rod, plate, lattice and other components.
- Q: How does a graphite crucible handle chemical resistance?
- The inherent properties of graphite make a graphite crucible highly resistant to chemical corrosion. Graphite consists of carbon atoms arranged in a hexagonal lattice structure, which provides exceptional chemical stability. It does not react with acids, bases, or organic solvents, making it non-reactive with most chemicals. The chemical resistance of a graphite crucible is mainly due to its high melting point and low reactivity. With a melting point of over 3,500 degrees Celsius, graphite can withstand extreme temperatures and resist chemical degradation. This makes it suitable for various high-temperature processes, such as melting metals and alloys. Additionally, graphite's non-porous structure prevents chemicals from permeating its surface. This non-porosity minimizes the risk of chemical absorption, ensuring that the crucible remains chemically inert and resistant to corrosion. Hence, it can be used with reactive substances without fear of contamination or chemical reactions. However, it is important to note that despite its resistance to most chemicals, graphite crucibles may still be vulnerable to certain aggressive substances under specific conditions. For example, graphite can react with strong oxidizing agents like fluorine gas or molten alkali metals. Prolonged exposure to corrosive environments or extreme temperatures can also gradually degrade the crucible's resistance. In conclusion, a graphite crucible demonstrates excellent chemical resistance due to its high melting point, non-reactive nature, and non-porous structure. It can effectively withstand the corrosive effects of most chemicals encountered in various industrial processes, making it a reliable choice for applications requiring chemical stability. However, it is essential to consider the specific chemical environment and conditions to ensure optimal performance and longevity of the crucible.
- Q: Corundum crucible and graphite crucibleSome enterprises use graphite crucibles in vacuum furnaces, while some larger ones use corundum crucibles. What I want to know is the advantages and disadvantages of corundum crucibles and graphite crucibles
- Graphite crucible is a high temperature resistant and difficult to sinter material. But the biggest problem must be used in vacuum or reducing atmosphere. Otherwise, graphite is easily oxidized at high temperature. Moreover, this crucible is more expensive
- Q: What can replace a graphite crucible?
- Graphite crucible special tips:1. Be careful not to let the mechanical outside hit, do not belong or strike from the top.2. Should not be exposed to water or stored in a dry place.3. Built in melt dry, without contact with water.4. In use, flames that are not directly in the crucible (jet to the bottom of the crucible) will have a marked black mark at the bottom of the crucible if it is sprayed.5. After the aluminum is stopped, the remaining copper material is tried without leaving residue in the crucible.6. Use the proper amount of oxide (slag, etc) to avoid erosion of the crucible. Excessive use may cause erosion and damage to the crucible.7. When placed in a crucible, there is no need to use mechanical power to have a significant impact.
- Q: Can graphite crucibles be used for metal casting?
- Yes, graphite crucibles can be used for metal casting. Graphite is a common material used for crucibles in metal casting due to its high melting point and excellent thermal conductivity. It is particularly suitable for casting non-ferrous metals such as gold, silver, copper, and aluminum. Graphite crucibles can withstand high temperatures without cracking or deforming, making them ideal for melting and pouring molten metal. Additionally, graphite has low chemical reactivity, which prevents it from reacting with the metal being cast. This property ensures that the purity and quality of the final cast metal are maintained. However, it is important to note that graphite crucibles may not be suitable for casting certain metals with high melting points, such as steel, as they may not withstand the extreme temperatures required for melting these metals. In such cases, other materials like clay or ceramic crucibles may be more appropriate.
- Q: Can a graphite crucible be used for iron casting?
- No, a graphite crucible is not suitable for iron casting. Iron casting requires a crucible made of materials that can withstand the high temperatures and chemical reactions involved, such as clay or silicon carbide. Graphite crucibles are better suited for non-ferrous metal casting due to their lower melting points and reactivity with iron.
- Q: What is the importance of carbon graphite as biological material?
- As a conductive material of graphite in the electrical industry widely used as electrode, brush, carbon, carbon nanotubes, mercury rectifier cathode, graphite gasket, telephone parts, TV tube coating etc.. The most widely application of graphite electrode in smelting, alloy steel, iron alloy, graphite electrode, the strong current through the melting zone, the arc electrode into the electric furnace, the electrical energy into heat, the temperature rises to 2000 degrees, so as to achieve the purpose of melting or reaction. In addition, in the electrolysis of metal, magnesium, aluminum and sodium, the anode of the electrolytic cell is also made of graphite electrode. The resistance furnace for carborundum is also made of graphite electrode as furnace head conducting material.
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High Purity Graphite Crucible for Melting Metals
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 pc
- Supply Capability:
- 1000 pc/month
OKorder Service Pledge
OKorder Financial Service
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