Graphite Crucibles Wholesell/High Strengh CNBM
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- 10000 m.t./month
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Features
1.Long working lifetime: its working lifetime is increased 3-5 times over normal clay-crucible due to the compact body formed under high pressure.
2.High thermal conductivity: highdensity body and low apparent porosity greatly improve its heat conductivity.
3.Newstyle materials: new heat conduction material ensures faster heat conductivity and pollution-free product, reduces adherent slag.
4.Resistance to corrosion:better anti-corrosion than normal clay-crucible.
5.Resistance to oxidation: advanced process dramatically improves its oxidation resistance, which ensures persistent heat conductivity and long working lifetime.
6.High-strength: high-density body and logical structure make the product better compression property.
7.Eco-friendly: energy-efficient and pollution-free, not only ensure metal product purity, but also ensure sustainable development on environment.
8.Multi-function: Can be used in induction graphite crucible furnace
Specification
Bulk Density | g/cc | 1.70-1.88 |
Specific Resistance | μΩ.m | 6.0-15.0 |
Compressive Strength | MPa | 30-80 |
Bending Strength | MPa | 20-45 |
Shore hardness | 30-70 | |
C.T.E.(100-600°C) | x10-6 /°C | 2.5-5.5 |
Ash | % | 0.01-0.2 |
Maximum Grain Size | mm | 0.044-0 |
Product Uses
1. Graphite crucible cannot be exposed in moisture, and must be placed in indoor dry place or wooden shelf. Maintain ventilated. Moisture is strictly prohibited. Damped crucible is likely to crack.
2. Each crucible, especially damped ones, must be preheated and roasted in drying equipment or next to a ground furnace before use. The roasting temperature should start from a low temperature of 100°C below. Roast it to 150°C at a speed of not higher than 30°C per hour. Preserve the heat for about 8 hours and then dry it. The crucible dried next to a ground furnace should be placed at least for one shift, and often turned to change direction, till workers feel the internal wall of crucible is hot.
3. The melting time for the first time should be at least twice of the normal melting time, in order to avoid cracking inside the crucible due to heating up too fast, or even cracking immediately when the fire sets on.
4. Handle with care. Falling or shaking is strictly forbidden in order to present cracking. Crucible should be placed below the mouth of furnace to prevent the furnace lid abrading the upper edge of the crucible and thus affecting the capacity.
5. Pour out the remaining cold metals inside the crucible after use, and then add new materials. Carefully and gently add new materials into the crucible. Feed materials according to the capacity of crucible. It is not allowed to feed too many materials, in order to prevent crucible from swelling or bursting.
6. Knock gently to remove slags and cokes on the internal and external wall of the crucible. Avoid damaging the crucible body.
7. In the melting process, do not add chloride solvents in order not to corrode the crucible. For the furnace that uses oil and coal gas as fuels, the oil wind should not reach one part of the crucible directly. Turn around the crucible from time to time, in order to avoid local damage.
8. Clamps and other discharging tools should comply with the shape of the crucible. During furnace discharging, remove the cokes on the external wall of the crucible, and lower the furnace temperature; do not discharge at high temperature after stopping blasting. Clamp the upper and middle parts instead of the top of the crucible in order not to damage the crucible. Graphite crucible is used mainly to melt gold, silver and other precious metals.
- Q:What is the effect of carbon equivalent on welding?
- Carbon equivalent is the conversion of various alloying elements in steel to carbon content! Carbon and alloying elements in steel have different effects on weldability of steel. Carbon has the greatest impact, and other alloy elements can be converted into carbon to estimate the weldability of the welded material. The converted sum is called the carbon equivalent! In Li Guang is used in carbon steel Q235, so if you just want to know welding business, ha ha, can put the carbon steel as the approximation of the carbon equivalent, carbon equivalent higher welding performance worse!
- Q:What is carbon fixation?
- Living organisms, particularly plants and algae, convert atmospheric carbon dioxide (CO2) into organic compounds through carbon fixation. This process is crucial for sustaining life on Earth and is an integral part of the natural carbon cycle. Through photosynthesis, green plants utilize sunlight, water, and CO2 to generate glucose and oxygen. Glucose acts as a foundational component for various organic molecules like carbohydrates, lipids, and proteins. Carbon fixation not only supports plant growth and development but also maintains a proper balance of atmospheric CO2 levels. It aids in the mitigation of the greenhouse effect by extracting CO2 from the atmosphere and storing it in biomass or soil. Moreover, carbon fixation serves as an essential source of energy and nutrients for other organisms that consume plants or algae. Ultimately, carbon fixation is a fundamental process that contributes to the stability and functionality of ecosystems and holds significant implications for climate change and the global carbon cycle.
- Q:How does carbon impact the availability of freshwater resources?
- Carbon impacts the availability of freshwater resources through various interconnected processes. One of the major ways carbon affects freshwater availability is through climate change. The increased levels of carbon dioxide in the atmosphere, primarily due to human activities such as burning fossil fuels, contribute to global warming. This leads to changes in precipitation patterns, including altered rainfall distribution and intensity. Warmer temperatures caused by carbon emissions can increase evaporation rates and lead to more frequent and severe droughts in certain regions. This reduces the amount of water available for freshwater resources such as rivers, lakes, and reservoirs. Additionally, the changing climate can disrupt natural water cycles, affecting the recharge of groundwater aquifers, which are crucial sources of freshwater. Furthermore, carbon impacts the quality of freshwater resources. Acid rain, a result of increased carbon emissions reacting with atmospheric moisture, can acidify freshwater bodies and make them inhospitable for many aquatic organisms. This disrupts ecosystems and can lead to the loss of species that rely on freshwater resources for their survival. Another way carbon impacts freshwater availability is through its influence on land use. The conversion of forests and wetlands into agricultural or urban areas releases carbon stored in vegetation and soil. This not only contributes to carbon emissions but also reduces the capacity of natural ecosystems to retain and filter water. Forests, for example, play a vital role in maintaining the water cycle by absorbing rainfall and releasing it gradually into streams and groundwater. Deforestation disrupts this process and can lead to decreased water availability downstream. In conclusion, carbon emissions have a significant impact on the availability of freshwater resources. Through climate change, carbon alters precipitation patterns, leading to droughts and reduced water availability. It also affects the quality of freshwater through processes like acid rain. Additionally, land-use changes driven by carbon emissions can further decrease freshwater availability by disrupting natural water cycles.
- Q:Why carbon fiber resistant to low temperature
- Resistance to 180 DEG C carbon fiber can be low temperature, under this condition, many materials are brittle, even sturdy steel has become fragile than glass, and carbon fiber under this condition is still very soft. Therefore, the carbon fiber composite core can be used in the design and manufacture of transmission carriers under extremely cold conditions, such as Antarctic research and research.
- Q:What is carbon emission and what harm does it do? How can carbon dioxide be prevented?
- Carbon deposition reaction:CH4 = kJ/mol C+H274.92CO = CO2+C +172.4 kJ/mol on.The main cause of carbon analysis is that the ratio of water to carbon is too low, so that the rate of carbon removal is lower than the rate of carbon depositionThe above chemical reactions are reversible reaction, from the analysis of thermodynamics, if the increase in temperature or reducing system pressure, increase the possibility of methane decomposition reaction type is CH4 C+H2 produce coke; possibility of CO reaction 2CO = CO2+C and CO = C + H2 reaction +H2O produce coke decrease. If the temperature is reduced or increased the pressure is on the contrary. The effect of temperature on coke reaction is very large, to avoid the [wiki] [/wiki] carbon catalyst must select the appropriate temperature, avoid carbon deposition area.
- Q:What are the basic structures of iron carbon alloys?
- Ferrite: a solid solution in which carbon is dissolved in alpha -Fe, called ferrite. The symbol is Fe. Ferritic carbon content is very low, at 727 degrees of 0.0008%, and its mechanical properties similar to pure iron, strength and hardness is not high, plasticity and toughness good.Austenite: a solid solution in which carbon is dissolved in gamma -Fe, called austenite.
- Q:Speak in detail! I am ~ carbon Roast Lamb Leg lamb chops lamb barbecue ah ~ ~ how to do with practice video line! And how do you bake the oven?
- Step 2: prepare garlic paste, starch paste, mixed evenly, with the barbecue. The purpose is to make the lamb roast outside tender, and not paste, garlic flavor rich, delicious, very delicious, this is a unique secret recipe, dedication. Step 3: students after adding charcoal, grill, the best 30 cm distance between the grill with charcoal, around to gather, the formation of hot absolute direction, to avoid heat loss. Lamb must be able to rack up and down around the inversion freely, to evenly bake. Bake for 7 minutes until the lamb cooked, mashed garlic paste to wipe, scorched yellow Maoyou creaking, sprinkle with pepper and natural. Time to master almost on the line. Because mutton has the distinction between the old lamb and the lamb, it is difficult to grasp the baking time. If you use a home electric oven, you'll need to marinate the mutton first. Methods: fresh meat (lean half) dice, into the pot, cumin, pepper, fennel, two, ginger,
- Q:What is the melting point of carbon?
- The melting point of carbon is determined by the form in which it is discovered. There are several forms of pure carbon, such as graphite and diamond. Graphite possesses a melting point of about 3,600 degrees Celsius (6,500 degrees Fahrenheit), whereas diamond has an even higher melting point of roughly 3,827 degrees Celsius (6,920 degrees Fahrenheit). The reason for these elevated melting points lies in the robust covalent bonds between carbon atoms in these structures. However, it is crucial to acknowledge that carbon can also exist in amorphous states, like coal or charcoal, which lack a specific melting point since they undergo a gradual decomposition process upon heating.
- Q:What is the symbol for carbon?
- "C" is the symbol representing carbon.
- Q:What is the carbon content of different types of soil?
- The carbon content of different types of soil can vary significantly depending on factors such as vegetation cover, climate, and land use. Generally, soils with abundant plant growth and organic matter tend to have higher carbon content. For example, forest soils typically have higher carbon content compared to agricultural or desert soils. Additionally, the carbon content can vary within soil profiles, with surface layers often containing more carbon than deeper layers.
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Graphite Crucibles Wholesell/High Strengh CNBM
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 0 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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