Sic Graphite Crucible for Melting Metals

Sic Graphite Crucible for Melting Metals System 1

Sic 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
Item	Unit	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)
Product name	Φ1	Φ2	Φ3	H	Weight(g)
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

Sic Graphite Crucible for Melting Metals

Q:Can graphite crucibles be used for melting composite materials?: Yes, graphite crucibles can be used for melting composite materials. Graphite crucibles have excellent thermal conductivity and high melting point, making them suitable for melting a wide range of materials including composites. However, it is important to consider the specific requirements of the composite material being melted to ensure compatibility and avoid any potential reactions or contamination.

Q:Can sintering rare earth fluorides be made of corundum crucibles?: The main material of the graphite crucible is crystalline natural graphite. Therefore, it keeps all kinds of physical and chemical characteristics of natural graphite.That is: good thermal conductivity and high temperature resistance, in the process of high temperature use, the coefficient of thermal expansion is small, and has a certain strain resistance to hot and cold. The corrosion resistance of acid and alkaline solution is strong, and it has good chemical stability.

Q:Graphite crucible heat resistance, then graphite crucible can ignite? Charcoal is mainly composed of graphite, why charcoal can be ignited?: Is not the same as the graphite crystal transition in carbon charcoal, but amorphous carbon, no C-C covalent bond. Charcoal ignition point is 320-370 DEG C, the general fire than the high temperature, so the charcoal can be ignited.

Q:I'd like to smelt 104 aluminium alloy by medium frequency furnace. What should I pay attention to? Please point it out, thank you!: Don't know what is your crucible material medium frequency furnace, if using graphite crucible, graphite as easily broken and easy to absorb moisture, must be handled with care to avoid the collision, but must be in use before the slow heating and drying, until the crucible to dark red, check no cracks can be put into the molten alloy. If the iron crucible, the Aluminum Alloy are strictly limited, so the iron, iron crucible, Tieshao, ladle, the tool must be coated with paint, paint is selling goods, components do not know, iron crucible and apparatus must also be preheated, exclusion of moisture. In addition, do not know you are refining aluminum ingot or making ah Aluminum Alloy parts, if the production parts should pay attention to defects of oxidation, slag and coarse grain, I am afraid that refining, refining agent are also ready to sell goods, how can read the instructions. Especially when smelting Caution!, preventing aluminum liquid splash, including many contents, such as inspection and testing, there is not much to say, the main note in the smelting process I thought so much, typing is slow, very hard ah, hey. Hope to be of some help to you.

Q:Are graphite crucibles suitable for melting composite propellants?: Composite propellants are generally unsuitable for melting in graphite crucibles. Composite propellants are composed of oxidizers, fuels, and binders, which can be highly reactive and corrosive. Although graphite is known for its high melting point and resistance to high temperatures, it can react with certain components of composite propellants. When exposed to certain oxidizers like ammonium perchlorate, which is commonly found in composite propellants, graphite crucibles can undergo chemical reactions and erosion. This can result in contamination of the propellant and impact its performance. Additionally, the binders used in composite propellants can also react with graphite, causing the crucible to degrade and potentially fail. To melt composite propellants, it is advisable to use crucibles made from materials specifically designed for this purpose, such as ceramic or refractory metal crucibles. These materials have superior resistance to the corrosive nature of composite propellants and can withstand the high temperatures involved in the melting process.

Q:What are the different methods of monitoring the melting process in a graphite crucible?: There are several methods available for monitoring the melting process in a graphite crucible. These methods can provide valuable information about the temperature, consistency, and progress of the melting process. 1. Visual Inspection: One of the simplest methods is to visually inspect the melting process. This can be done by observing the color, consistency, and movement of the materials being melted. For example, if the materials are turning into a liquid state and flowing smoothly, it indicates that the melting process is progressing as expected. 2. Thermocouples: Thermocouples are widely used for temperature measurement in various industrial processes, including melting in graphite crucibles. These devices consist of two different metals joined together at one end. By measuring the voltage difference between the two ends, the temperature can be determined. Thermocouples can be inserted into the crucible or placed near it to monitor the temperature accurately. 3. Infrared Pyrometers: Infrared pyrometers are non-contact temperature measurement devices that use infrared radiation to determine the temperature of an object. They can be used to monitor the temperature of the graphite crucible during the melting process without physically touching it. Infrared pyrometers provide quick and accurate temperature readings. 4. Optical Emission Spectroscopy (OES): OES is a technique that analyzes the light emitted by the materials being melted to determine their composition and temperature. By analyzing the spectral lines and intensities of the emitted light, OES can provide valuable information about the melting process, including temperature and the presence of impurities or alloying elements. 5. Pressure Measurement: Monitoring the pressure inside the graphite crucible can also be an indicator of the melting process. As the materials melt and vaporize, the pressure inside the crucible may increase. Pressure sensors can be employed to measure the pressure changes during the melting process, providing insight into the progress of the melting and the behavior of the materials. These methods can be used individually or in combination to monitor the melting process in a graphite crucible. By employing one or more of these techniques, operators can ensure that the melting process is proceeding as intended and make any necessary adjustments or interventions to maintain optimal conditions.

Q:Can a graphite crucible be used for melting steel?: No, a graphite crucible cannot be used for melting steel. Graphite crucibles are typically used for melting non-ferrous metals such as gold, silver, and aluminum. Steel requires a crucible made of materials with higher melting points, such as clay-graphite or silicon carbide.

Q:How long can a graphite crucible last for a long time?: When the temperature increases, the graphite crucible not only does not soften, but the strength is increased. At 2500 degrees, the tensile strength of graphite increases by one time.

Q:Are graphite crucibles suitable for melting composite propellants?: Composite propellants are generally unsuitable for melting in graphite crucibles. Composite propellants are composed of oxidizers, fuels, and binders, which can be highly reactive and corrosive. Although graphite is known for its high melting point and resistance to high temperatures, it can react with certain components of composite propellants. When exposed to certain oxidizers like ammonium perchlorate, which is commonly found in composite propellants, graphite crucibles can undergo chemical reactions and erosion. This can result in contamination of the propellant and impact its performance. Additionally, the binders used in composite propellants can also react with graphite, causing the crucible to degrade and potentially fail. To melt composite propellants, it is advisable to use crucibles made from materials specifically designed for this purpose, such as ceramic or refractory metal crucibles. These materials have superior resistance to the corrosive nature of composite propellants and can withstand the high temperatures involved in the melting process.

Q:How do you prevent carbon contamination in a graphite crucible?: To prevent carbon contamination in a graphite crucible, there are several steps that can be taken: 1. Proper cleaning: Before use, the graphite crucible should be thoroughly cleaned to remove any residual carbon or impurities. This can be done by scrubbing the crucible with a mild detergent and rinsing it with distilled water. It is important to avoid using abrasive cleaners or brushes that can damage the crucible. 2. Preheating: Preheating the graphite crucible before use can help to remove any remaining impurities. This can be done by placing the crucible in a furnace or kiln and gradually increasing the temperature to around 1000°C (1832°F). This process should be done slowly to prevent thermal shock and cracking of the crucible. 3. Proper handling: When handling the graphite crucible, it is important to avoid touching the inside surface with bare hands as this can transfer oils and contaminants. It is recommended to wear gloves or use clean, lint-free tools when working with the crucible. 4. Controlled atmosphere: Carbon contamination can also occur due to exposure to air or other reactive gases. To prevent this, it is advisable to use the crucible in a controlled atmosphere, such as in a vacuum or inert gas environment. This can help to minimize the chances of carbon contamination. 5. Avoid overheating: Excessive heat can cause the graphite crucible to react with the materials being processed, leading to carbon contamination. It is important to carefully monitor and control the temperature during heating or melting processes to prevent overheating of the crucible. By following these preventive measures, carbon contamination in a graphite crucible can be effectively minimized, ensuring the purity and integrity of the materials being processed.

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