RP Graphite Electrode

RP graphite electrode is used in ordinary power electric arc furnaces such as steelmaking, silicon smelting, and yellow phosphorus smelting. Made of petroleum coke and coal pitch as raw materials. It is characterized by low ash content, good electrical conductivity, high temperature resistance, and does not melt or deform under high temperatures. RP graphite electrode as a conductive material in arc metallurgical furnaces for smelting various non-ferrous and rare metals. It can be used at current densities exceeding 17A/cm2. Specifications and model diameters: 100mm-960mm.

RP Graphite electrode, mainly petroleum coke, needle coke as raw material, coal pitch as binder, calcination, ingredients, kneading, molding, baking, graphitization and mechanical processing.

The production cycle is about 45 days and RP graphite electrode is mainly used for smelting ordinary steel, silicon, and yellow phosphorus in electric arc furnace. It is used in electric arc furnace in the form of arc conductor of electricity to heat melting furnace charge.

It has high electrical conductivity, improved thermal shock performance, resistance to oxidation and corrosion, long life, ability to operate at high temperatures, and low environmental impact.

Industrial Application

Regular power graphite electrodes are widely used for electric arc furnace steelmaking, metallurgical casting and other industries. They are utilized in electric arc furnaces, ladle furnaces, and Submerged arc furnace. Include other melting processes where high-temperature environments and efficient electrical conductivity are essential.

It provides a conductive path for the current to pass through in the electric arc furnace. This allows precise control of temperatures and electric currents needed for melting, refining, and alloying in smelting processes. Their uniform electrical conductivity and low thermal expansion make them suitable for electric arc furnace steelmaking.

It is important to note that it is not suitable for use in ultra high power and high power electric arc furnaces. Different grade of graphite electrodes are suitable for different electric furnaces.

Advantage

High-quality materials, using high-quality and high-purity petroleum coke and pitch coke.
Highly conductive. Because of its lower resistivity, it is easier for electric current to pass through it in an electric arc furnace.
It has high mechanical strength, strong bending and compression resistance, and is not easy to segment or break.
The cost is low, the production process is relatively simple, and the price is low.
High machining accuracy, good surface finishing.

Specifications

Allowable Current-Carrying Capacities

Nominal		RP Graphite Electrodes
mm	inch	Current-Carrying Capacity（A）	Current Density （A/cm²）
300	12	10000~13000	14~18
350	14	13500~18000	14~18
400	16	18000~23500	14~18
450	18	22000~27000	13~17
500	20	25000~32000	13~16
600	24	35000~41000	13~15

Physical &Chemical Properties Of Electrode And Nipple

RP Graphite Electrode		Unit	Diameter
RP Graphite Electrode		Unit	12”-16”	18”-20”	24”
Specific resistance	Electrode	μΩ·m	≤8.0	≤8.0	≤9.0
Specific resistance	Nipple	μΩ·m	≤7.0	≤7.0	≤7.0
Transverse strength	Electrode	ΜРa	≥6.8	≥6.4	≥6.4
Transverse strength	Nipple	ΜРa	≥15.0	≥13.0	≥13.0
Elastic modulus	Electrode	GРa	≤9.3	≤9.3	≤9.3
Elastic modulus	Nipple	GРa	≤14.0	≤14.0	≤14.0
Bulk Density	Electrode	g∕㎝³	≥1.56	≥1.56	≥1.55
Bulk Density	Nipple	g∕㎝³	≥1.70	≥1.70	≥1.72
C.T.E （100～600℃）	Electrode	10^-6∕℃	≤2.9	≤2.9	≤2.9
C.T.E （100～600℃）	Nipple	10^-6∕℃	≤2.8	≤2.8	≤2.8
Ash content		%	≤0.5	≤0.5	≤0.5

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RP Graphite Electrode