Graphite Crucible/High Quality CNBM Graphite Crucibles

Graphite Crucible/High Quality CNBM Graphite Crucibles System 1

Graphite Crucible/High Quality CNBM Graphite Crucibles

Ref Price:

Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 0 m.t.

Supply Capability:: 100000 m.t./month

Inquire Now

Chat Online

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Specifications

1. SIC graphite crucible
2. high pure and density
3. high strength crucible
4. ISO 9001
5. high heat condduction

Product Description

A crucible is a container used to hold metal for melting in a furnace and it is needed to withstand the extreme temperatures encountered in melting metals. The crucible material must have a much higher melting point than that of the metal being melted and it must have good strength even when white hot.

Graphite crucible can withstand the high temperature, and has good resistance to chemical erosions and thermal shock. Especially graphite crucible is ideal for the melting of aluminum, copper and etc.

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

Usage

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.

Picture

Graphite Crucible/High Quality CNBM Graphite Crucibles

Q:How is carbon used in the production of diamonds?: Carbon is a key component in the production of diamonds as it is the primary element that makes up the structure of a diamond. Diamonds are formed deep within the Earth's mantle, where extreme heat and pressure cause carbon atoms to bond together in a unique crystal lattice formation. This process, known as carbon crystallization, occurs over millions of years. One method of producing synthetic diamonds involves recreating these intense conditions in a laboratory. High-pressure, high-temperature (HPHT) machines are used to apply immense pressure and heat to a small piece of carbon, such as graphite. This stimulates the natural process that occurs in the Earth's mantle, allowing the carbon atoms to rearrange themselves and form a diamond. Another method, known as chemical vapor deposition (CVD), involves the use of a hydrocarbon gas, such as methane, in a controlled environment. The gas is introduced into a chamber and heated, causing the carbon atoms to separate from the hydrogen atoms. These carbon atoms then settle on a substrate, such as a diamond seed, and gradually build up layer by layer, forming a diamond. In both methods, carbon serves as the building block for the diamond's structure. By manipulating the conditions in which carbon atoms are subjected to extreme heat and pressure, scientists and manufacturers can control the growth and formation of diamonds. This allows for the production of synthetic diamonds that possess the same physical and chemical properties as natural diamonds. Overall, carbon is essential in the production of diamonds as it is the fundamental element that enables the formation and growth of these precious gemstones.

Q:What are the impacts of carbon emissions on the stability of coral reefs?: The stability of coral reefs is significantly affected by carbon emissions. One of the primary outcomes of carbon emissions is the occurrence of ocean acidification, which happens when the ocean absorbs carbon dioxide. This results in a decrease in the water's pH level, making it more acidic. Corals are extremely sensitive to changes in pH levels, and as the water becomes more acidic, it becomes harder for them to build and maintain their calcium carbonate skeletons. The increased acidity of the water also impacts the growth and survival of other organisms that form the foundation of coral reef ecosystems, such as algae and shellfish. These organisms play a vital role in providing food and a habitat for many species, including corals. As their populations decline due to acidification, the entire reef ecosystem becomes destabilized. Another consequence of carbon emissions on coral reefs is the warming of the ocean. Carbon dioxide acts as a greenhouse gas, trapping heat in the atmosphere and causing global temperatures to rise. This rise in temperature leads to coral bleaching, a process where corals expel the symbiotic algae living within their tissues. The loss of these algae deprives corals of their main source of nutrition and gives them a bleached appearance. If the water temperatures remain high for an extended period, corals may die, resulting in the degradation of the reef structure. Furthermore, carbon emissions contribute to the rise in sea levels, which poses a threat to the stability of coral reefs. Increasing sea levels increase the risk of coastal erosion and flooding, which can damage or destroy coral reef habitats. Additionally, the intensified and more frequent storms, a consequence of climate change, can physically harm coral reefs, making them more vulnerable to disease and preventing their recovery. In summary, carbon emissions have a harmful impact on the stability of coral reefs. Ocean acidification, coral bleaching, rising sea levels, and increased storm activity all collaborate to weaken and degrade these fragile ecosystems. It is crucial to reduce carbon emissions and take action to mitigate climate change to safeguard and preserve the health of coral reefs and the numerous species that rely on them.

Q:What is the carbon content of different types of household waste?: The carbon content of various household waste types can differ based on the specific materials being disposed of. Generally, organic waste, including food scraps, yard waste, and paper products, tends to have higher carbon content when compared to inorganic waste like glass, plastics, and metals. Food waste consists mainly of organic materials and possesses a significant carbon content, typically ranging from 50 to 70 percent. This is because food originates from plants and animals, which contain carbon-rich carbohydrates, proteins, and fats. Yard waste, such as grass clippings, leaves, and branches, also contains a substantial amount of carbon. It is composed of plant matter predominantly made up of carbon-based compounds like cellulose and lignin. The carbon content of yard waste can vary depending on the vegetation type, but it generally falls between 40 to 60 percent. Paper products, such as newspapers, cardboard, and office paper, are primarily manufactured from wood pulp. Wood consists of carbon-containing compounds like cellulose, hemicellulose, and lignin. Consequently, paper waste possesses a notable carbon content, typically ranging from 40 to 60 percent. On the other hand, inorganic waste materials like glass, plastics, and metals have minimal carbon content. These materials are mainly derived from non-renewable resources such as minerals and fossil fuels, which have low carbon content. As a result, their carbon content is negligible or close to zero. It is crucial to acknowledge that while organic waste contains higher carbon content, it also holds the potential for composting or conversion into biogas through anaerobic digestion, thereby contributing to carbon sequestration or renewable energy generation. In contrast, inorganic waste materials like plastics and metals are non-biodegradable and can have harmful environmental consequences if not managed properly.

Q:How to test aldehyde group and carbon carbon double bond in acrolein: Can be oxidized into carboxyl aldehyde with silver ammonia solution or new copper hydroxide, then the bromine test double bonds, because the aldehyde will affect the bond detection, and will not affect the detection of double bond of carboxyl.

Q:What are the impacts of carbon emissions on human health in developing countries?: Developing countries are significantly affected by carbon emissions, which have considerable consequences for human health. The burning of fossil fuels and deforestation are the primary sources of these emissions, which contribute to the deterioration of air quality and give rise to a variety of health problems. Respiratory diseases are among the most immediate and visible impacts caused by high levels of carbon emissions. These emissions release harmful pollutants such as particulate matter and nitrogen dioxide, which can irritate the respiratory system and worsen existing conditions like asthma and bronchitis. In developing countries where access to healthcare may be limited, these respiratory diseases can be particularly harmful and lead to higher mortality rates. Furthermore, climate change, driven by carbon emissions, indirectly affects human health. Rising temperatures and shifting weather patterns can facilitate the spread of diseases transmitted by vectors, such as malaria and dengue fever. Developing countries often lack the necessary infrastructure and resources to effectively combat these diseases, resulting in increased rates of infection and mortality. Additionally, carbon emissions contribute to the formation of ground-level ozone, a harmful air pollutant. Exposure to high levels of ozone can cause respiratory problems, cardiovascular issues, and even premature death. Developing countries, with their limited access to healthcare and vulnerability to extreme weather events, may experience higher rates of illness and mortality due to ozone exposure. Moreover, carbon emissions contribute to the acidification of oceans, which negatively impacts marine ecosystems. This, in turn, affects the availability and quality of seafood, which is a vital source of nutrition for many people in developing countries. Impaired access to nutritious food can lead to malnutrition and various health issues, especially among vulnerable populations such as children and pregnant women. In conclusion, the impacts of carbon emissions on human health in developing countries are severe. The release of pollutants from burning fossil fuels and deforestation leads to respiratory diseases, the spread of vector-borne illnesses, ozone-related health problems, and nutritional deficiencies. These health impacts underscore the importance of prioritizing sustainable development and transitioning to clean energy sources in developing countries. Additionally, international cooperation is crucial in addressing this global issue.

Q:What are the impacts of carbon emissions on urban environments?: Carbon emissions have significant impacts on urban environments. Firstly, they contribute to the greenhouse effect, leading to climate change and increased temperatures in cities. This can result in heatwaves, reduced air quality, and worsened health conditions for urban dwellers. Secondly, carbon emissions from transportation and industries contribute to air pollution, leading to respiratory problems and other health issues. Additionally, carbon emissions are a major driver of global warming and sea-level rise, posing a threat to coastal cities. To mitigate these impacts, cities need to prioritize sustainable transportation, energy-efficient buildings, and renewable energy sources to reduce carbon emissions and create healthier urban environments.

Q:Which carbon content is larger, steel or pig iron?: Iron and steel is distinguished by carbon: carbon content below 2.11% for carbon steel, according to can be divided into carbon steel low carbon steel (WC = 0.25%), carbon steel (WC0.25% - 0.6%) and high carbon steel (WC>0.6%);

Q:What is fullerene?: A unique structure resembling a hollow cage or sphere is what constitutes a fullerene, a molecule composed entirely of carbon atoms. Alongside graphite and diamond, it is considered a form of carbon allotrope. The renowned and most commonly known fullerene is referred to as buckminsterfullerene or simply C60, which takes the shape of a soccer ball with 60 carbon atoms. Fullerenes come in a range of sizes, from as little as 20 carbon atoms to several hundred. They can be found naturally in soot or formed through different methods like laser ablation or chemical vapor deposition. With their distinct structure, fullerenes possess exceptional properties, such as high strength, low density, and excellent electrical and thermal conductivity. Therefore, they have found applications in various fields, including nanotechnology, electronics, medicine, and materials science.

Q:Often see a lot of cars made of carbon fiber body, is this material flammable?: Carbon fibers are carbonized composites, not burning of their own. Material that belongs to fire protection. But conductive, not insulated.

Q:How can Dungeon Fighter Online's superior furnace rock carbon be obtained?: DNF will be added to our senior LU Yan carbon in the mall, priced at 450 points and 50 points 10 coupon coupon 1, after use can start advanced equipment to strengthen in Kylie, strengthen the probability of success is greater, the following is a detailed introduction.

1. Manufacturer Overview
Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range