Regular Powder Graphite Electrode RP Various Specifications of Graphite Electrode Supply

• Customization: Available
• Diameter: 150-450mm
• Ash: Less Than 0.5%
• Model NO.: RP graphite electrode
• Bulk Density: 1.60--1.65g/cm3
• Type: Graphite Electrodes
• Carbon Content: High-Carbon
• Grade: RP
• Forming Way: Molded Graphite
• Composition: Coke Graphitized
• Crystal Morphology: Graphite
• Transport Package: as Customer′s Requirments
• Specification: 100MM-700MM
• Trademark: XS
• Origin: China
• HS Code: 8545110000
• Production Capacity: 5000 Tons/Month

Product Description

RP Graphite Electrode For Steel-Making  ELECTRIC ARC FURNACE .
Model Number:RP
Resistance (μΩ.m):≤ 8.5
Apparent Density (g/cm³ ):
Product name:  RP
Description: The electrodes carry the electricity that heats electric arc furnaces, the vast majority steel furnaces. They are made from petroleum coke after it is mixed with petroleum pitch, extruded and shaped, then baked to sinter it, and then graphitized by heating it above the temperature (3000 °C) that converts carbon to graphite. They can vary in size up to 11 ft. long and 30 in. in diameter.



RP graphite electrode Index FACTORY Control Standard 

RP Graphite Electrode 

Items		Specific Electric Resistance <= µΩ·m	Flexural Strength >=MPa	MOE<= GPa	CTE( 100-600ºC) <= 10-6/ºC	ASH<=	Bulk density  >=g/cm3
Standard ( YB/T 4089-2015 )	E	7.0-8.5	7.0-9.5	6.0-9.0	2.2-2.5	0.5	1.60-1.65
	N	4.0-4.5	17-22	12-16	1.5-2.0		1.75-1.82
Factory Supply	E	8	7.5-9.5	6.0-10	2.5	0.5	1.6
	N	4.0	17-22	12-16	2.0		1.80

 

Graphite Electrode Best-selling Model :

Items		Unit	UHP		HP	RP
			φ300-φ500	φ550-φ800	φ300-φ800	φ300-φ800
Resistivity	Electrode Nipple	μΩm μΩm	4.8-5.8 3.5-4.0	4.6-5.8 3.5-4.0	5.8-6.6 3.5-4.0	7.0-10.0 4.0-4.5
Modulus of Rupture	Electrode Nipple	Mpa Mpa	10.0-14.0 20.0-24.0	10.0-14.0 22.0-26.0	10.0-13.0 20.0-23.0	8.0-10.0 19.0-22.0
Young's Modulus	Electrode Nipple	Gpa Gpa	9.0-13.0 15.0-18.0	10.0-14.0 16.0-19.0	8.0-12.0 14.0-16.0	7.0-9.3 12.0-14.0
Bulk Density	Electrode Nipple	g/cm3 g/cm3	1.68-1.74 1.78-1.82	1.70-1.74 1.80-1.84	1.64-1.68 1.75-1.80	1.53-1.56 1.70-1.74
CTE(100-600ºC)	Electrode Nipple	10^-6/ ºC	1.10-1.40 0.90-1.20	1.10-1.40 0.90-1.20	1.60-1.90 1.10-1.40	2.20-2.60 2.00-2.50
Ash		%	0.3	0.3	0.3	0.5

 

 

Our Graphite Electrode Features

• High Temperature Strength

• Low Thermal Expansion

• Excellent Thermal and Electrical Conductivity

• Good Machinability

 

 

Diameter (MM)	Length (MM)
Norminal Dia	Exact Diameter	Norminal Length	Allow Tolerance	Short Length Toerance
inches"	mm	≤	≥	Black ≤
3	75	78	73	72	1000/1200/1400/1600	±100	-275
4	100	103	98	97	1000/1200/1400/1600
5	130	132	127	126	1000/1200/1400/1600
6	150	154	149	146	1200/1400/1600/1800
7	175	179	174	171	1200/1400/1600/1800
8	200	205	200	197	1600/1800
9	225	230	225	222	1600/1800
10	250	256	251	248	1600/1800/2000
12	300	307	302	299	1600/1800/2000/2200
14	350	358	352	349	1600/1800/2000/2200
16	400	409	403	400	1600/1800/2000/2200
18	450	460	454	451	1600/1800/2000/2200
20	500	511	505	502	1800/2000/2200/2400
22	550	562	556	553	1800/2000/2200/2400
24	600	613	607	604	2000/2200/2400/2700
26	650	663	659	656	2400/2700
28	700	714	710	707	2400/2700

 

 1. XINGSHI Graphite Introduction .Introduction :

 

graphite electrode is used for steel recycling in electric arc furnace industry.

 

Its main component is high-value needle coke, which is made of petroleum or coal tar. 

 

The graphite electrode is machined in a cylindrical shape and a threaded area is machined at each end. 

In order to meet the requirements of higher work efficiency and lower total cost, large capacity ultra-high power arc furnace is becoming more and more popular. 

 

 

2. Features

 

• High current resistance and high discharge rate.

• Good dimensional stability and not easy to deform.

• Resistance to cracking and spalling.

• High oxidation resistance and thermal shock resistance.

• High mechanical strength and low resistance.

• High machining precision and good surface finish.

• Uniform structure, good conductivity and thermal conductivity

 

3. Application

 

Graphite electrode is widely used in the production of alloy steel, metal and other non-metallic materials.

DC electric arc furnace.

AC arc furnace.

Submerged arc furnace.

Ladle furnace.

 

Steel Smelting 

FerroAlloy furnace 

Calcium Carbide Furnace 

Silicon Metal Furnace

(1) Regular  power graphite electrode

It is allowed to use graphite electrode with current density lower than 17a / cm2, which is mainly used in ordinary power electric furnaces for steelmaking, silicon smelting, yellow phosphorus smelting, etc.

(2) Oxidation resistant coated graphite electrode

Graphite electrode coated with a layer of antioxidant protective layer (graphite electrode antioxidant). Form a protective layer that can conduct electricity and resist high-temperature oxidation, reduce the electrode consumption during steelmaking (19% ~ 50%), prolong the service life of the electrode (22% ~ 60%), and reduce the electric energy consumption of the electrode. The popularization and use of this technology can bring such economic and social effects:

1.The unit consumption of graphite electrode is less, and the production cost is reduced to a certain extent. For example, in a steelmaking plant, based on the consumption of 35pcs graphite electrodes per week and 165 refining furnaces in the primary LF refining furnace without shutdown throughout the year, 373pcs graphite electrodes can be saved every year after the graphite electrode oxidation resistance technology is adopted

(153 tons) electrode, calculated at 3000USD per ton of ultra-high power electrode per year, USD 459,000 can be saved.

2.The graphite electrode consumes less power, saves the unit steelmaking power consumption, saves the production cost and saves energy!

3.Because the graphite electrode is changed less times, the amount of labor and risk coefficient of operators are reduced, and the production efficiency is improved.

4.Graphite electrode is a low consumption and low pollution product. Today, when energy conservation, emission reduction and environmental protection are advocated, it has very important social significance.

This technology is still in the research and development stage in China, and some domestic manufacturers have also begun to produce it. It has been widely used in Japan and other developed countries. At present, there are also companies specializing in importing this anti-oxidation protective coating in China.

(3) High power graphite electrode. Graphite electrode with current density of 18 ~ 25A / cm2 is allowed to be used, which is mainly used in high-power electric arc furnace for steelmaking.

(4) Ultra high power graphite electrode.  UHP Graphite electrodes with a current density greater than 25A / cm2 are allowed. It is mainly used for ultra-high power steelmaking electric arc furnace.

 

 

4. Nipple

 

3TPI/T4L/T4N Or Customized

 

Product Paramenters

 

Packaging Details :in wooden case or package as customer's order
Usage: An increasing proportion of global steel is made using electric arc furnaces, and the electric arc furnace itself is getting more efficient and making more steel per tonne of electrode

Welcome Your Inquiry !!!

                   Our graphite electrodes are available in different grades: UHP, SHP ,HP and RP . But ,now due to the low cost performance RP (regular power) electrodes less used in world market . We accept Customized if your budget is lower for some small secondary steel scrap factory .
UHP (Ultra high power) Graphite electrodes are used for energy-efficient transmission of high current loads into the furnace charge, giving a lower electrode consumption rate and faster metal meltdown rates.
SHP (Super high power) Graphite electrodes are recommended for use in the less demanding high power electric arc furnace and superior high power ladle furnace applications, where the application is not severe and the lower percentage of needle coke is allowable.
HP (High power)Graphite electrodes are generally used in high power ladle furnace, foundry and fused mineral applications These are usually electrodes below 350mm diameter, though in single phase applications the electrodes can be up to 500mm diameter.
RP (Regular Powder) electrodes are produced by ordinary petroleum coke , with low graphitization temperature , high electric resistance , large linear expansion coefficient  and poor thermal shock resistance . So the allowable current  density is lower ,.

 

For more information on the typical properties of the different grades we supply, please see below.
 

UHP GRADE (PREMIUM)
Electrode Diameter	mm	300 - 710
Bulk Density	g/cm³	1.64 - 1.75
Specific resistance	µΩM	4.5 - 6.0
Flexural strength	MPa	10 - 15
CTE	10¯6/°C	0.7 - 1.5
Porosity	%	17 - 23
Ash content	%	0.1 - 0.6

For more information, typical dimensions and technical data , Welcome your Inquiry .

 

HP GRAPHITE ELECTRODES
Electrode Diameter	mm	75 - 350
Bulk Density	g/cm³	1.640 - 1.72
Specific resistance	µΩM	5.5 - 7.5
Flexural strength	MPa	8 - 13
CTE	10¯6/°C	0.9 - 2.2
Porosity	%	20 - 25
Ash content	%	0.1 - 0.6

SHP GRADE
Electrode Diameter	mm	250 - 600
Bulk Density	g/cm³	1.64 - 1.72
Specific resistance	µΩM	5.0 - 6.5
Flexural strength	MPa	9 - 14
CTE	10¯6/°C	0.8 - 2.0
Porosity	%	18 - 24
Ash content	%	0.1 - 0.6

     

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