High bulk density, precision thread accuracy.
Check the tolerance of nipples one by one.
Bending strength limits are measured.
High machining accuracy, good surface...
Graphite Parts
Graphite Parts Manufacturer
ZhenAn International Co., Limited. is located in Anyang City, Henan Province, the hometown of Oracle. The company specializes in the research and development, production and sales, and international trade of graphite parts. It is mainly used in metallurgical smelting industries such as steelmaking, silicon smelting, and yellow phosphorus smelting.
Why Choose Us
Rich Experience
It has nearly 30 years of experience in graphite electrode production and research and development and independent intellectual property rights. It is a domestic professional production and research and development enterprise with excellent quality, complete varieties and multiple specifications.
Our Team
ZhenAn has a professional team of 200 people, 90% of whom are professionals with many years of sales experience. They provide you with high-quality service experience and solve all your problems, so that you can buy without worries.
Production Capacity
It has advanced carbon testing and inspection facilities at home and abroad, and can produce and process Ф100-Ф600mm ordinary power, high power, and ultra-high power graphite electrodes with a production capacity of 150,000 tons/year.
Production Equipment
Closed conveyor, Impact crusher, Extrusion molding machine, Impregnation tank, Roasting furnace, Graphitization furnace.
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![Graphite Electrode Nipple]()
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![Graphite Bilock]()
Graphite BilockGrade: Industrial Graderead more
Forming Way: Extruded Graphite
Apparent Density (G/Cm³ ): 1.69-1.80O -
![Graphite Powder]()
Graphite PowderPurity : 100%read more
Form : Powder
Sulphur : 0.1%
Ash : Below 1%
Use : Industrial -
![Graphite Crucibles]()
Graphite CruciblesMax. working Temperature: 900-1800ºC;read more
Refractoriness Under Load: 2000ºC;
Carbon Content: ≥99.95%;
Bulk Density: ≥1.75-1.85g/cm³;
Apparent Porosity: ≥13-17%%;
Outer...
Types of Graphite Parts
The Graphite Parts by Our Company Mainly Include the Following Types:
Graphite Electrode Nipple
Graphite electrode nipple are used to connect two or more electrodes into a column with the purpose of achieving continuous use of electrodes in the electric arc furnace steelmaking process.
Graphite Bilock
Graphite blocks are a solid form of graphite that can be used in a wide range of applications due to their stability, strength, and durability under stressful conditions.
Graphite Powder
Graphite powder is simply a powder form of graphite that retains all of the material's inherent primary and secondary properties. The graphitic powder is a highly effective lubricant that has multiple beneficial properties.
Graphite Crucibles
Graphite crucibles are important containers for melting and casting metals such as gold, silver, aluminum, and brass. They are highly regarded for their excellent thermal conductivity, ability to withstand high temperatures, and resistance to thermal expansion under extreme conditions.
Graphite Crucible Specification
|
Items |
Unit |
Specification |
|
|
Grain Size |
mm |
0.045-2 |
|
|
Bulk Density |
g/cm3 |
1.65-1.85 |
|
|
Resistivity |
μΩ•m |
6.0-11.0 |
|
|
Bending Strength |
Mpa |
18-36 |
|
|
Compressive Strength |
Mpa |
36-75 |
|
|
C.T.E |
×10-6/ ℃ |
2.9-3.0 |
|
|
Ash |
% |
0.01-0.1 |
|
|
Round |
Diameter |
mm |
10-1100 |
|
Length |
mm |
≤2500 |
|
|
Products can be processed as order requirement or drawings. |
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Benefits of Graphite Crucibles
01/
Enhanced Corrosion Resistance and Chemical Inertness
Graphite crucibles are highly resistant to corrosion. Their chemical inertness means they do not react with the substances being melted, preventing contamination and ensuring the purity of the final product.
02/
Improved Strength and Stability at High Temperatures
High-purity graphite crucibles maintain their structural integrity at extreme temperatures, often up to 5000°F. This high-temperature stability is critical in applications where prolonged exposure to heat is necessary.
03/
Extended Service Life
Due to their high purity and resistance to oxidation, graphite crucibles have a longer service life compared to other types of crucibles. This longevity reduces the need for frequent replacements, making graphite crucibles a cost-effective choice in the long run.
04/
Thermal Shock Resistance
Graphite crucibles are known for their excellent thermal shock resistance. This property allows them to withstand rapid temperature changes without cracking or breaking, which is common in processes that involve sudden cooling or heating.
05/
Ease of Precise Machining and Customization
Graphite crucibles can be precisely machined and are available in various sizes and shapes. They can also be custom-made to meet specific manufacturing requirements, although this might come at a higher cost.
06/
Low Specific Resistance
The low specific resistance of graphite allows for better heat distribution within the crucible, ensuring that the material being melted is heated evenly.
Uses of Graphite Crucibles
Oil stove
Fuel-burning furnaces are powered by natural gas, petroleum, propane or coke and require graphite crucibles that can withstand the maximum energy or BTU from the furnace.
Induction furnace
The choice of fuel burning furnace and electric furnace graphite crucible is much easier than that of induction furnace. In one type of induction furnace, the crucible is used to melt the charge, while in other types the induction field is passed through the crucible.
Detachable crucible furnace
The furnace crucible is "A" shaped so it can be lifted with tongs and removed from the furnace to pour out the molten metal. They can fit inside or outside the stove and allow their contents to be poured.
Tilting furnace
The graphite crucible used in the tilting furnace remains stationary while the furnace is tilted to pour the molten metal. Inclined furnaces can be induction furnaces or electric furnaces capable of melting steel, iron, copper, brass, gold, platinum, silver, nickel, palladium and their alloys.
Production Process
The production of graphite crucibles involves several critical steps to ensure their high quality and performance:
Raw Material Selection
High-purity natural or synthetic graphite powder is selected as the primary raw material. The purity of the graphite significantly impacts the crucible’s performance.
Mixing and Binding
The graphite powder is mixed with a binder, typically a resin or pitch, to enhance its mechanical properties and facilitate shaping.
Machining and Finishing
After graphitization, the crucibles are machined and polished to achieve the desired dimensions and surface finish.
Forming
The mixture is then formed into crucibles using methods such as isostatic pressing or extrusion. This step requires precise control to ensure uniform density and structural integrity.
Baking
The formed crucibles are baked at high temperatures in a non-oxidizing atmosphere to carbonize the binder and enhance the strength and thermal properties of the graphite.
Graphitization
In this step, the crucibles undergo a high-temperature treatment (usually above 2500℃) to convert the carbonized binder into graphite, further improving the crucible’s thermal and mechanical properties.
Graphite Electrode Nipple Specification
|
Electrode Dia. |
Nipple Designation |
Nipple |
Socket |
||||
|
Major Dia. |
Length |
Pitch Dia |
Depth |
Thread Length |
|||
|
(inch) |
(mm) |
d1 |
l1 |
d4 |
l2 |
l3 |
|
|
9 |
225 |
139T3N |
139.7 |
203.20 |
135.49 |
107.60 |
103.60 |
|
10 |
250 |
155T3N |
155.57 |
220.00 |
151.36 |
116.00 |
112.00 |
|
12 |
300 |
177T3N |
177.16 |
270.90 |
172.95 |
141.50 |
137.50 |
|
14/16 |
350/400 |
215T3N |
215.90 |
304.80 |
211.69 |
158.40 |
154.40 |
|
14/16 |
350/400 |
215T3L |
215.90 |
355.60 |
211.69 |
183.80 |
179.80 |
|
16/18 |
400/450 |
241T3N |
241.30 |
338.70 |
237.09 |
175.30 |
171.30 |
|
16/18 |
400/450 |
241T3L |
241.30 |
355.60 |
237.09 |
183.80 |
179.80 |
|
20 |
500 |
273T3N |
273.05 |
355.60 |
268.84 |
183.80 |
179.80 |
|
20 |
500 |
273T3L |
273.05 |
457.20 |
268.84 |
234.60 |
230.60 |
|
22 |
550 |
298T3L |
298.45 |
457.20 |
294.24 |
234.60 |
230.60 |
|
* Pin pitch diameter d2 is equal to socket pitch diameter d4. * Socket minor diameter d3 is equal to pitch diameter d4 minus 3.16 mm. * Other combinations of nominal diameter and joint are to be agreed upon between the supplier and user. |
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Graphite Electrode Nipple Material
The material used for graphite electrode nipples is generally a mixture of graphitized petroleum coke and coal tar pitch, and the material endure multiple processing steps, extrusion, baking, high-pressure impregnation, and graphitization contained, to make high-density, high-strength, and high-conductivity graphite electrode nipples.
By doing this, the graphitized petroleum coke and coal tar pitch mixture are heated to high temperature, making volatiles and impurities in petroleum coke and coal tar to be eliminated, and thus the graphite structure formed.
These graphitized materials can be transformed into blocks, rods, or tubes of graphite electrodes and nipples, which are used for conducting and refractory work in electric arc furnaces and other high-temperature melting process.
Advantages of Graphite Electrode Nipple
High Electrical Conductivity
Ensures efficient current flow, which is critical for high-performance applications.
01
Thermal Resistance
Capable of withstanding high temperatures, thereby reducing the risk of thermal failure.
02
Corrosion Resistance
The properties of graphite provide excellent resistance against oxidation and other corrosive elements.
03
Reduced Wear and Tear
The high durability of graphite extends the lifespan of both the nipple and connected electrodes, resulting in lower operational costs.
04
Custom Sizing
Available in various sizes and designs to meet specific industry requirements, enhancing compatibility and performance.
05
Application of Graphite Electrode Nipple
Electric arc furnaces (EAFs): Graphite electrode nipples are used as the primary conductive material in EAFs. They are connected to the power supply and provide the electrical energy necessary to generate the high temperatures required to melt the scrap metal and additives for steel production.
Ladle furnaces: Graphite electrode nipples can also be used in ladle furnaces, which are used for secondary steelmaking, refining, and alloying. They are immersed in the molten steel to further refine the composition and temperature of the steel before casting.
High-power applications: Graphite electrode nipples are preferred for high-power applications due to their high electrical conductivity and thermal resistance. They can withstand extremely high temperatures and carry large amounts of electrical current, making them suitable for demanding steelmaking processes.
Continuous casting: Graphite electrode nipples are also utilized in continuous casting machines, where they help maintain the desired temperature and composition of the molten steel during the casting process.
Foundries: Graphite electrode nipples are also used in foundries to produce cast iron and other metal alloys. They are inserted into the molds to provide electrical resistance heating, aiding in the melting and shaping of the metals.
Graphite Electrode Nipple Usage Requirements
Diameter Selection
The first consideration when choosing a graphite electrode nipple is the diameter of the electrode. This should be determined by the capacity of the furnace and the equipped transformer to ensure that the nipples can withstand the corresponding current load and current density.
Thread Integrity
Before installation, it is important to check whether the threads inside the electrode hole are intact and whether the threads of the nipple match.
Avoid Moisture and Impact
Graphite electrodes should be protected from rain, snow, and water during transportation and storage to prevent moisture. If the electrode becomes damp, it should be dried before use. Also, handle with care during loading and unloading to protect the threads and avoid damage due to impact.
Cleaning
Before connecting, clean the threads of the electrode and nipple to ensure a secure connection. Before use, clean the surface of the spare graphite electrode with compressed air to ensure the cleanliness of the electrode and good electrical conductivity.
Proper Installation Method
When installing the nipple, carefully screw it into one end of the electrode, avoiding direct replacement of the electrode on the furnace to prevent thread damage or potential safety hazards. Maintain alignment of the central line when joining electrodes. The electrode holder should clamp outside the two warning lines at the nipple linkage part.
Product Transportation Packaging
Protective End Caps
All ends of graphite electrodes come with fitted protective plastic or rubber caps to keep threaded parts safe.
Wooden Crates or Pallets
Graphite electrodes are mostly packed in heavy-duty pallets or sturdy wooden crates. These pallets or crates are made to take in electrode weight and length, which can vary based on size.
Foam and Cushioning
Materials for cushioning like soft padding or foam, are placed all around graphite electrodes to take in the vibrations and shocks movement or transportation brings.
Other Services
Delivery Time: Usually our manufacture time is 7-10 days. And meanwhile it takes 7-30 days to apply the Import and export license for dual-useitems and technologies, so the delivery time is 7 to 30 days after payment.
MOQ: There is no limit for MOQ, 1 ton is also available.
OEM/ODM: We can accept OEM/ODM. We can design products and packaging patterns according to your requirements.
Payment Terms: We accept T/T, Paypal, Western Union. Normally, we accept 30% deposit and the balance before shipment.
Transportation: Usually we use express as DHL, FEDEX, UPS, TNT, air and sea transportation is supported. We always choose economist way for you.
Our certificates: The company has passed the GB/T 19001-2015/ISO 9001:2015 quality management system certification, and the product quality is uniform and stable.
Sales Market: The company's products are sold well in major steel companies at home and abroad, and are mainly exported to Iran, Myanmar, Vietnam, Germany, the United Kingdom and other countries and regions.
FAQ
We're professional graphite parts manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale cheap graphite parts from our factory. For price consultation, contact us.