Graphite Electrode RP For Sale

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♦Excellent corrosion resistance, oxidization resistance

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RP Graphite Electrode Description

RP graphite electrode is the abbreviation of regular power graphite electrode. Graphite electrode refers to a kind of high temperature resistant graphite based electricity conduction material, which adopts petroleum coke, asphalt coke as aggregate, coal asphalt as binder, and are processed by raw material calcination, crushing, milling, batching, mixing, forming, roasting, impregnating, graphitization and mechanical processing. To differentiate with natural graphite made electrode, it is also called artificial graphite electrode (abbreviated as graphite electrode). The main raw material of graphite electrode is petrol coke, in regular power graphite electrode, a little amount of pitch coke can be added into the raw material.

Advantages of RP Graphite Electrodes For Sale in RS

► Our product is made of high quality low ash materials, such as petroleum coke, needle coke and coal pitch.
► From calcining, burdening, kneading, forming, baking to pressure impregnation, graphitization, we pay attention to every detail to make it boutique.

► We know machining is very important, so we precision machined with professional CNC machining to make sure high quality.
► Such of the products own characteristics with low resistivity, good electrical conductivity, low ash, compact structure, good antioxidation and high mechanical strength.

RP Graphite Electrode technical parameters

Items	Classification	Unit	Nominal Diameter (mm)
			75-130	150-225	250-300	350-450	500-800
Resistivity	Electrode	μΩm	8.5	9	9	9	9
	Nipple		8	8	8	8	8
Bending Strength	Electrode	Mpa	10	10	8	7	6.5
	Nipple		15	15	15	15	15
Young’s Modulus	Electrode	Gpa	9.3	9.3	9.3	9.3	9.3
	Nipple		14	14	14	14	14
Bulk Density	Electrode	g/cm3	1.58	1.53	1.53	1.53	1.52
	Nipple		1.7	1.7	1.7	1.7	1.7
CTE (100℃-600℃)	Electrode	×10-6/℃	2.9	2.9	2.9	2.9	2.9
	Nipple		2.7	2.7	2.8	2.8	2.8
Ash Content		%	0.5	0.5	0.5	0.5	0.5

Graphite Electrode RP Current Capacity

Nominal diameter		Permissible current power	The current density (A / cm2)
Millimeter (mm)	Inch (inch)	Permissible current power	The current density (A / cm2)
300	12	10000-13000	17-24
350	14	13500-18000	17-24
400	16	18000-23500	16-24
450	18	22000-27000	16-24
500	20	25000-32000	15-24
600	24	30000-36000	14-24

The Length & Diameter & Permissible Deviation of Graphite Electrode RP

Diameter				Length
Nominal diameter		Actual diameter		Nominal length	tolerance
Millimeters (mm)	Inch (inch)	Max. (Max.)	Min (min)	mm	Length	the maximum
300	12	307	302	1600 1800	± 100	-100	-275
350	14	357	352
400	16	409	403
450	18	460	454
500	20	511	505	1600/1800/2000/2200 1800/2000/2200 1800/2000/2200/2400 1800/2000/2200 1800/2000/2200	± 100	-100

Application of RP Graphite Electrode

Electric furnace steelmaking mill is the largest user of graphite electrodes. Graphite electrodes used in steelmaking accounts for 70%-80% of the total graphite electrodes production. Graphite electrodes are used to conduct electric current into electric furnace, electric arcs generated between electrodes end and loaded materials can release large amount of heat for high temperature smelting.

(1) For Resistance Furnace

The graphitization furnace for producing graphite products, the furnace for glass melting, and the electric furnace for producing silicon carbide are all electric resistance furnaces. Materials loaded in these furnaces are not only heating resistances but also the objects to be heated. Usually, graphite electrodes for electric conduction are embedded in the wall of resistance furnace end part, so the graphite electrode used here is not continuously consumed.

(2) For the Production of Special Shaped Graphite Products

Graphite electrode workblank is also used to make a variety of special shaped graphite products such as crucible, mold, boat vessel and heating component. For example, in quartz glass industry, for every ton of electrofusion tube, 10t of graphite electrode blank is required, for every ton of quartz bricks, 100 kg of graphite electrode blank is consumed.

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