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RS Graphite Electrodes For Sale

♦Withstand large currents, high discharge rate.

♦Good dimension stability, not easy to deform.

♦Resistant to cracking & spalling.

♦High resistance to oxidation and thermal shock.

♦High mechanical strength, low electrical resistance.

♦Different sizes available, including large diameter

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Graphite Electrode Introduction

Graphite Electrodes for sale from RS Factory are a high temperature resistant graphite conductive refractory material used in the metallurgical industry. Graphite Electrode is made of petroleum coke, bituminous coke as aggregates, coal tar pitch as binders, after raw material calcination, crushing and milling, batching, kneading, molding, roasting, impregnation, graphitization and machining, which is also known as artificial graphite electrodes in order to distinguish from natural graphite electrodes made of natural graphite. If you are looking for high quality graphite electrodes for sale, Contact us for more details.

Graphite Electrodes Classification

Graphite Electrodes for sale can be divided into regular power graphite electrode, high power graphite electrode and ultra high power graphite electrode based on its quality index. There are also other grades including regular power (RP), normal power (NP), and medium power or (MP). However, these grades are less commonly used.

Regular power graphite electrodes(RP) are mainly used in ordinary power electric furnaces for steel making, silicon refining, and yellow phosphorus.

High-power graphite electrodes(HP) are primarily applied in the high-power electric arc furnaces for steel making.

Ultra high power graphite electrodes(UHP) are mainly used in the ultra high power steelmaking electric arc furnaces.

RP Graphite Electrode Characteristics

♦High current carrying capacity.

♦Outstanding resistance to breakage.

♦High resistance to oxidation and thermal shock.

♦Good dimension stability, not easy to deform.

♦High mechanical strength, low electrical resistance.

♦High machining accuracy, good surface finishing

The Physiochemical Index of Graphite Electrodes

Name		Unit	Nominal Diameter
			UHP Ultra-High-Power		HP Superstrong		RP Conventional Power
			≤Φ400	≥Φ450	≤Φ400	≥Φ450	≤Φ300	≥Φ350
Resistivity	Electrode	ΜΩ · m	≤5.5		≤6.5		≤8.5
	Nipple		≤4.5		≤5.5		≤6.5
Flexural Strength	Electrode	MPa	≥11.0		≥10.5	≥9.8	≥8.5	≥7.0
	Nipple		≥20.0		≥16.0		≥15.0
Elastic Modulus	Electrode	GPa	≤14.0		≤12.0		≤9.3
	Nipple		≤18.0		≤16.0		≤14.0
Density	Electrode	g / cm3	≥1.66	≥1.67	≥1.62	1.6	≥1.53	≥1.52
	Nipple		≥1.75		≥1.73		≥1.69
Coefficient Of Thermal Expansion	Electrode	10-6 / ℃	≤1.5		≤2.4		≤2.9
	Nipple		≤1.4		≤2.2		≤2.8
ASH		%	≤0.3		≤0.3		≤0.5
Note: 1.Koeffitsient ash content and thermal expansion as the reference index, the coefficient of thermal expansion (100 ℃ ~ 600 ℃), Custom manufacturing.

The Length & Diameter & Permissible Deviation of Graphite Electrode

Nominal Diameter	Actual Diameter				Length (mm)	Tolerance
MM	Inch	Poppy	Mines	Size	Length (mm)	Length	Short Length
75	3	78	73	72	1400/1600	± 100	-275
100	4	103	98	97	1400/1600
130	5	132	127	126	1400
150	6	154	149	146	1400/1600/1800
175	7	180	174	172	1400/1600
200	8	205	200	197	1600/1800
225	9	230	225	222	1600/1800
250	10	255	251	248	1600/1800
300	12	307	302	299	1600/1800/2000
350	14	357	352	349	1600/1800/2000
400	16	409	403	400	1600/1800/2000/22000
450	18	460	454	451	1600/1800/2000/22000
500	20	511	505	502	1600/1800/2000/22000
550	22	562	556	553	1800/2000/2200/2400
600	24	613	607	604	2000/2200/2400/2700
650	26	663	659	656	2000/2200/2400/2700
700	28	714	710	707	2000/2200/2400/2700

Graphite Electrodes Uses

As a conductive electrode, not only can graphite electrodes be used in steelmaking electric arc furnaces, refining furnaces, but also in industrial silicon furnaces, yellow phosphorus furnaces, and corundum furnaces. The uses of graphite electrodes are mainly as follows:

1.Electric Arc Furnace

Graphite electrodes are the most widely used in electric furnace steelmaking. China’s electric furnace steel production accounted for about 18% of crude steel production, and the graphite electrode for steelmaking accounts for 70%-80% of the total amount of graphite electrodes. Electric furnace steelmaking uses a graphite electrode to introduce a current into the furnace and uses the high-temperature heat source generated by an arc between electrical extremes and the charge for smelting.

2.Ore Electric Furnace

The ore electric furnace is mainly used for the production of industrial silicon and yellow phosphorus which is characterized by the lower part of the conductive electrode buried in the charge, the formation of arc in the material layer, and the use of the heat emitted by the resistance of the charge itself to heat the charge, wherein the higher density current electric furnaces needs graphite electrodes. For example, about 100 kg of graphite electrode is consumed for every 1t of silicon produced, and about 40 kg of graphite electrode is consumed for each 1t of yellow phosphorus.

3.Electric Resistance Furnace

The graphitization furnace for producing graphite products, the melting furnace for melting glass, and the electric furnace for producing silicon carbide belong to electric resistance furnaces. The materials contained in the furnace are both heating resistors and objects to be heated. Usually, graphite electrodes for electric conduction are embedded in the furnace head wall of the electric resistance furnace end, the graphite electrode used here is not continuously consumed.

4.For The Preparation of Shaped Graphite Products

The graphite electrode blank is also used to process a variety of shaped graphite products such as enamel, mold, boat and heating element. For example, in the quartz glass industry, for every 1 ton of electrofusion tube, 10 t graphite electrode blank is required; for every 1 t of quartz brick, 100 kg graphite electrode blank is consumed.