Graphite Electrode
Your Professional Graphite Electrode Supplier
Our goal is to become your true partner in the field of graphite electrode in China. ZHEN AN INTERNATIONAL CO., LIMITED is an enterprise specializing in Metallurgical products, integrating production, processing, sales, and importing and exporting business with 30+ years of experience. We are committed to providing a "one-stop service" to meet our customers ' needs. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards.The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
Why Choose Us
Our equipment
Our company has advanced production equipment, including 8 12500KW submerged arc furnaces and multiple crushing equipment production lines.
Our customization
Our engineers can provide customized solutions according to the needs of different customers, and specific parameters, sizes and packaging can be customized.
Product market
We not only meet the needs of Chinese steel companies, but also export our products to 150 countries and regions including Japan, South Korea, India, Europe, and the United States.
Our services
In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.
Low density and low quality: The density of graphite is only 1/5 of that of copper, and graphite electrodes can greatly reduce the load during spark machining.
Smaller thermal expansion rate: The thermal expansion rate of graphite is 1/4 of that of copper, which can effectively reduce the deviation caused by the heating deformation of the electrode.
Good processability
The cutting resistance of graphite materials is relatively small, and its processing efficiency is about twice to three times that of copper. The use of graphite materials can reduce the processing of electrodes.
It is easier to realize the processing of thin rib styles
The processing of copper electrodes produced by cutting heat is prone to thermal deformation. Because of the plastic nature of the material, elastic deformation will easily occur when processing thin ribs, causing processing shock.
Outstanding electrical discharge roughing efficiency
The melting point of copper is 1083℃, and the temperature at the moment of discharge can reach 1100℃. The copper electrode is easy to wear, while the graphite will sublime at 3550℃.
|
Items |
Specific Electric Resistance <= µΩ·m |
Flexural Strength >=MPa |
MOE<= GPa |
CTE( 100-600ºC) <= 10-6/ºC |
ASH<= |
DIAMETER AND LENGTH |
Bulk density >=g/cm³ |
Needle Coke Content |
|
|
Standard ( YB/T 4089-2015 ) |
E |
5.2-6.5 |
10.5-15 |
9-12 |
1.5-2.2 |
0.2 |
200mm-700mm |
1.66-1.72 |
20-35% |
|
N |
4.0-4.5 |
20-26 |
14-18 |
1.2-1.5 |
1.75-1.82 |
||||
|
Factory Supply |
E |
<=6.5 |
10.5-15 |
9-12 |
1.5 |
0.2 |
>=1.66 |
25%-40% |
|
|
N |
<=4.0 |
20-26 |
14-20 |
1.2 |
>=1.78 |
||||
Types of Graphite Electrode
Natural graphite electrode
Natural graphite electrodes are electrodes produced using natural flake graphite as raw materials. Coal tar pitch is added to natural graphite, and after kneading, molding, roasting and machining, natural graphite electrodes can be prepared.
Artificial graphite electrode
Using petroleum coke or pitch coke as solid aggregate and coal tar pitch as binder, the artificial graphite electrode can be prepared through kneading, molding, roasting, graphitization and machining.
Graphite electrode with anti-oxidation coating
The anti-oxidation coating graphite electrode adopts the "alternating spraying-melting method" or "solution dipping method" to form an anti-oxidation coating on the surface of the processed graphite electrode to achieve the purpose of reducing the oxidation consumption of the graphite electrode.
Water-cooled composite graphite electrode
The water-cooled composite graphite electrode is a conductive electrode used after the graphite electrode is combined with a special steel pipe. The double-layer steel pipe at the upper end is cooled by water, and the graphite electrode at the lower end is connected to the steel pipe through a water-cooled metal joint.
Hollow graphite electrode
Hollow graphite electrodes are hollow electrodes. This product is prepared by directly pressing the electrode into a hollow tube during forming or drilling in the center of the electrode during processing.
Regenerated graphite electrode
The recycled graphite electrode is prepared by using recycled artificial graphite scraps and powder as raw materials, adding coal tar pitch, kneading, forming, roasting and machining.
Properties of Graphite Electrodes
Density: Compared with other materials, the density of graphite electrodes is higher, between 1.6-1.78g/cm3.
Conductivity: The particular layered structure of carbon atoms in graphite is conducive to the free flow of electrons, so the conductivity is solid.
Flexural strength: Graphite has high mechanical strength, so the bending moment stress per unit area is relatively large.
Modulus of elasticity
Young’s modulus increases with temperature.
Corrosion resistance
Because of its stable chemical properties, it does not react with other substances at room temperature.
Thermal conductivity
Graphite is a non-metallic mineral, and its heat conduction method is the thermal vibration of lattice atoms to transfer heat.
Thermal expansion coefficient
It is much lower than other materials and is more suitable for environments with high temperatures and significant changes.
Application of Graphite Electrode
Steel industry
They are widely used in electric arc furnaces (eaf) for steel production. They serve as the conductive elements that create the electric arc to melt the scrap. Electrodes must withstand extreme temperatures and high mechanical stress.
Aluminum industry
Graphite electrodes are used in the smelting process of aluminum production. They are used in the electrolysis of aluminum oxide (aluminum oxide) in electrolytic cells.
Silicon industry
They can produce silicon and other silicon-based materials. In silicon refining, quartz, coke, etc., are used as raw materials to obtain high-purity silicon through chemical reactions.
Foundry industry
Graphite electrodes manufacture cast iron and steel products in foundries. In this process, they are used in electric arc furnaces to melt the metal and act as conductors when starting the casting process.
Chemical industry
They are used in various chemical processes that require high temperatures and electrical conductivity. For example, they are used in electrolyzers to produce chlorine gas and caustic soda from brine solutions.
Raw materials used in graphite electrode manufacturing: The first step in the graphite electrode manufacturing process is sourcing the right raw materials. Graphite electrodes are made from a blend of petroleum coke, pitch coke, and coal tar pitch. These materials are carefully selected for their purity and consistency.
Mixing and extruding: Once the raw materials have been sourced, they are mixed together in a large mixer. The mixture is then extruded into the desired shape and size using a high-pressure extruder. The extruded product is then cut to the required length.
Baking: The next step in the manufacturing process is baking. The extruded product is placed in a baking oven and heated to extremely high temperatures (up to 3000 degrees celsius) in an oxygen-free environment. This process is called graphitization and is what gives the graphite electrode its unique properties.
Machining: Once the baking process is complete, the graphite electrodes are machined to their final shape and size. This process requires precision equipment and highly skilled operators.
Quality control: Quality control is an essential part of the graphite electrode manufacturing process. Every batch of electrodes is carefully inspected to ensure that they meet the required standards for quality and consistency.
Customizable Options of Graphite Electrode
Recognizing that every customer has unique requirements, we offers a wide range of customization options. Whether you need electrodes in various diameters, lengths, or grades, we can tailor our products to suit your specific applications. Our team of experts works closely with clients to understand their needs and deliver bespoke solutions that exceed expectations.
|
Packing |
Bag /Steel Drum |
|
Shipping |
Shipped by road, sea, rail |
FAQ