RP Graphite Electrode

Your Professional RP Graphite Electrode Supplier

Founded in 2007, Wanlong Carbon Group is an industrial and trade enterprise specializing in the research and development, production and sales of carbon materials. The products have the characteristics of high mechanical strength, good thermal shock resistance and low consumption, and are widely used in steel, yellow phosphorus, corundum, industrial silicon, photovoltaic, semiconductor, non-ferrous metals, chemical industry and other industries.

Why choose us

Annual Output

Founded in 2007, the annual output of graphite electrodes has reached 100,000 tons.

System Certification

Wanlong Carbon Group has passed the ISO 9001 quality system and ISO 14001 environmental system certifications.

Company Size

There are more than 400 employees, including over 50 professional and technical personnel. The factory covers an area of 120,000 square meters.

Customized Service

Quality is the lifeblood of the company. With integrity as the foundation and stable management, we are committed to providing customers with quality products and excellent service.

RP Graphite Electrode

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.

Specification

Technical Parameter For RP Graphite Electrode

Diameter		Resistance	Flexural Strength	Young Modulus	Density	C.T.E	Ash
Inch	mm	μΩ·m	MPa	GPa	g/cm³	×10^-6/℃	%
10	250	7.5-8.5	≥9.0	≤9.3	1.55-1.64	≤2.4	≤0.3
12	300	7.5-8.5	≥9.0	≤9.3	1.55-1.64	≤2.4	≤0.3
14	350	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
16	400	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
18	450	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
20	500	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
22	550	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
24	600	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3

Current Carrying Capacity For RP Graphite Electrode

Diameter		Current Load	Current Density	Diameter		Current Load	Current Density
Inch	mm	A	A/m²	Inch	mm	A	A/m²
10	250	7000-10000	14-20	18	450	22000-27000	13-17
12	300	10000-13000	14-18	20	500	25000-32000	13-16
14	350	13500-18000	14-18	22	550	28000-34000	12-14
16	400	18000-23500	14-18	24	600	30000-36000	11-13

Graphite Electrode Size & Tolerance

Nominal Diameter		Actual Diameter(mm)		Rough Spot	Nominal Length	Tolerance	Short Length
mm	Inch	Max	Min	Max(mm)	mm	mm	mm
200	8	204	201	198	1600	±100	-275
250	10	256	251	248	1600-1800
300	12	307	302	299	1600-1800
350	14	358	352	347	1600-1800
400	16	409	403	400	1600-2200
450	18	460	454	451	1600-2400
500	20	511	505	502	1800-2400
550	22	562	556	553	1800-2400
600	24	613	607	604	2000-2700
650	26	663	659	656	2000-2700
700	28	714	710	707	2000-2700

Surface Characteristics

The electrode surface must exhibit no more than two defects or holes, with their maximum permissible size as indicated in the accompanying chart.

Absence of transverse cracks is mandatory on the electrode surface. In the case of longitudinal cracks, their length must not exceed 5% of the electrode’s circumference, while their width should fall within the range of 0.3 mm to 1.0 mm.

The width of any darkened region on the electrode surface must not exceed 1/10 of the electrode’s circumference, and its length should remain below 1/3 of the total electrode length.

Graphite Electrode RP Advantage

HP grade graphite electrodes are easier to process and process faster than copper electrodes

HP graphite electrode advantage is that it is easy to process, the discharge processing rate is high, and the graphite loss is small.

Graphite Electrode RP Production Characteristics

Graphite electrode RP production cycle is long.

Graphite electrode RP have high energy consumption.

Graphite electrode RP are many production processes.

Harmful gases and dusts are generated during the production of RP graphite electrode process, and environmental protection is required.

Production of carbonaceous raw refractory materials required petroleum coke and coal tar pitch are the production and processing by-products of refining enterprises and coal chemical enterprises. The quality and stability of raw refractory materials are difficult to be fully protected.

The surface quality of RP graphite electrode

There should be less than two defects or holes on the electrode surface, the max size of which is mentioned in the below chart(Surface quality of RP graphite electrode, defects are within the allowable range).

There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width between 0.3-1.0mm.

The width of the black area on the electrode surface should be less than 1/10 of electrode circumference and the length less than 1/3 of the electrode.

Product Packaging

Nominal package type
RP graphite electrodes are placed upon wooden pallets and braced strongly with high-quality steel tape to be suitable for land and sea transportation. Nipples are packed in crates.

Pre-set package type
Assembled RP graphite electrodes and nipples are packed in crates. Nipples and sockets are protected with polyester caps. Keep the protective caps at each end in place and undamaged, this can protect the threads from damage by bumping and other abrasions.

FAQ

Q: What is the RP graphite electrode used for?

A: RP graphite electrodes find application in the manufacture of Steel and other non-ferrous metals through the Electric Arc Furnace and the Laddle Furnace routes. It is used as a consumable for conducting high current at low voltage which is necessary for melting and/or alloying processes.

Q: How long is your product production cycle?

A: The production cycle of our company’s products is 3~6 months.

Q: Do products accept customization?

A: Our products are customizable, and you can come to us with your requirements.

Q: Is the RP graphite electrode positive or negative?

A: RP graphite electrode can function as both a positive and a negative electrode depending on the context. In certain electrochemical systems, such as lithium-ion batteries, graphite is commonly used as a negative electrode (anode).

Q: How much product inventory does your company have?

A: The long-term inventory is 10,000 tons and the annual production capacity is 30,000 tons.

Q: What is the lifespan of graphite electrodes?

A: The life of graphite electrodes depends on usage conditions, operating methods and maintenance, and usually lasts from months to years.

As one of the leading rp graphite electrode manufacturers and suppliers in China, we warmly welcome you to buy good quality rp graphite electrode from our factory. All customized products are with high quality and competitive price.

RP graphite electrode centered bore, RP Graphite Electrode With Nipple, Graphite electrode usd in electric arc furnace