Graphite Electrode for Electric Arc Furnace

• Ampere Density: 18-30A/cm�
• Application Area: Steel Industry
• Manufacturing Technique: Machining
• Shape: Cuistomized
• Density: 1.72 to 1.85 g/cm3
• Specific Resistance: No More Than 8.5
• Model NO.: HTDJ003
• Compressive Strenght: 34 MPa Min
• Material: Graphite
• Transport Package: Wooden Case
• Specification: Customized
• Trademark: Hang Carbon
• Origin: Hebei, China
• Production Capacity: 500000 Piece/Pieces Per Month

Product Description

What is Graphite Electrode?

Graphite electrode, a conductor that releases electric energy in the form of an electric arc, is used to heat and melt the steel scraps in an electric arc furnace.
Graphite electrodes are an important part of the steelmaking industry as they play a vital role in the electric arc furnace (EAF) steelmaking process. These high-performance electrodes are made of graphite, a crystalline form of carbon, and are used as an electrically conductive material to transmit electrical energy to the electric arc furnace.
 

Why Graphite Electrode?

Graphite electrodes are superior to other materials due to their high thermal conductivity, low thermal expansion, and excellent electrical conductivity.


What graphite electrode used for?
The electric arc furnace (EAF) steelmaking process involves the use of graphite electrodes to melt scrap steel and other raw materials in a furnace. Electrodes are placed into the furnace and current is passed through them to create an arc, which creates heat that melts the raw material. The molten steel is then cast into the desired shape.
Graphite electrodes are primarily used in the steelmaking industry, but they are also used to produce other metals such as aluminum and copper. They are available in a variety of diameters, lengths, and grades to suit different furnace sizes and steelmaking requirements.
 

 

Advantages
Graphite electrodes offer several advantages over other materials used in the EAF steelmaking process. They have a higher melting point than steel, which allows them to withstand the high temperatures in a furnace without melting. They also have excellent thermal shock resistance, which means they can withstand rapid changes in temperature without cracking or breaking.
Another advantage of graphite electrodes is their ability to conduct electricity efficiently. This is important because the more efficient the electricity transmission, the faster the melting process and the more cost-effective the entire steelmaking process is. Additionally, graphite electrodes have a low coefficient of thermal expansion, which means they do not expand significantly when heated, reducing the risk of cracking or breaking during use.
Graphite electrodes are also environmentally friendly. They produce less smoke and emissions than other materials used in the steelmaking process, making them a more sustainable option for the industry.
In summary, graphite electrodes are an important part of the steelmaking industry and their importance cannot be overstated. They are a key component in EAF's steelmaking process, enabling efficient transmission of electrical energy to the furnace and producing high-quality steel products. Their unique properties, such as high thermal conductivity, low thermal expansion, and excellent electrical conductivity, make them a preferred choice over other materials. Additionally, their production process is environmentally friendly, making them a more sustainable option for the industry. As the steel demand continues to grow, the demand for graphite electrodes will undoubtedly grow with it.
 

 

The manufacturing process of graphite electrodes

The manufacturing process of graphite electrodes involves the use of high-quality petroleum coke and needle coke as raw materials. The raw material is crushed, mixed with coal tar pitch, and baked in a furnace at temperatures over 2,000°C to form solid graphite blocks. The blocks are then cut into the desired shape and size to produce the final product.
 

Classification of Graphite Electrodes
According to the electric furnace capacity, transformer power load, the difference of raw materials used in the electrodes production and the physical & chemical indexes of finished electrodes, the graphite electrodes are divided into three types:
UHP graphite electrode 
HP graphite electrode 
RP graphite electrode
 

Technical data:

Property		Unit	Regular power RP		Impregnated Electrode HD		High power HP		Ultra high power UHP
			≤φ400	≥φ450	≤φ400	≥φ450	≤φ400	≥φ450	≤φ400	≥φ450
Resistivity	Electrode	µΩ•m	7.0-8.5	7.5-9.0	5.3-6.5	5.4-7.0	5.2-6.3	5.3-6.5	4.5-5.8	4.5-5.8
			4.2-5.2		3.8-4.8		3.5-4.5		3.4-4.0
	Nipple
Flexural strength	Electrode	Mpa	7.5-9.5	7.0-8.5	10.5-15	10.5-15	10.5-15	10.5-15	10-15	10-15
	Nipple		17-22		18-24		20-26		21-30
Modulus of elasticity	Electrode	Gpa	6.0-9.0		9-12		9-12		9-12
	Nipple		12-16		13-18		13-18		15-20
Ash	Electrode	%	0.4		0.3		0.2		0.2
	Nipple
Bulk density	Electrode	G/cm3	1.54-1.62		1.64-1.72		1.65-1.72		1.66-1.73
	Nipple		1.72-1.77		1.74-1.79		1.75-1.81		1.77-1.84
Thermal Expansion	Electrode	10.6/ºC	2.0-2.4		1.9-2.3		1.6-1.8		1.1-1.5
			1.5-2.0		1.3-1.8		1.3-1.5		0.9-1.2
	Nipple

The advantages of our factory:

1. We have many years of experiences in graphite industry, we choose the most proper materials for your application.
2. We have been exporting to customers in Europe, Asia, USA, Canada, Australia and etc.
3. We have many professional CNC machines.
4. We have a wide range of superior materials: isostatic graphite, Vibration Graphite, Extruded graphite, die molded graphite.
5. We have our own graphite material production facility, and enough stocking materials, to provide you a good and stable price.
6. We have professional engineering and technical team, prefessional international trading team to offer you professional services.
 

 

 

  
Advanced Equipments: 
 

 

Rigorous quality control procedure:
Initial production inspection
During Production Inspection
Pre-shipment inspection/Final inspection
 

Our Services:

Efficiency: Your einquiry will be replied with 24 hours 

Fast Delivery: Our produciton capability and enough mateiral stocks will make sure fast devevery
Customization: We provided OEM services based on your design and drawings

Design Service: Our professional and experienced enigneers team can disign for you, if you need
Quality and Price: We offer you high quality graphite products with the most competitive price

After-sales Services: Tracking service for feedbacks of our graphite products, and we will be responsilbe for quality problem.  

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