200-800 mm UHP HP RP Graphite Electrode for Eaf Lf

Product Description

200-800 mm UHP HP RP Graphite Electrode for Eaf Lf
Product Description Graphite electrodes are used mainly in ladle furnaces, electric-arc furnace steelmaking, Yellow phosphorus furnace, Industrial silicon furnace or melting copper. They are presently the only products available that have high levels of electrical conductivity and the capability of sustaining the extremely high levels of heat generated in this demanding environment.
Main Products Grades : NP/RP, HP, UHP
Normal Power Graphite Electrodes (NP)
High Power Graphite Electrodes (HP)
Ultra High Power Graphite Electrodes (UHP)
All graphite electrodes are offered with tapered nipples, i.e. 3 or 4 threads per inch, and meet the internationally accepted tolerances as per NEMA CG 1/ IEC 60239 / JIS R7201 standards.
Application Of Graphite electrodes: Graphite electrodes are used mainly in ladle furnaces,electric-arc furnace steelmaking,Yellow phosphorus furnace , Industrial silicon furnace or melting copper. They are presently the only products available that have the high levels of electrical conductivity and the capability of sustaining the extremely high levels of heat generated in this demanding environment.High Quality Needle Coke in HP&UHP graphite electrode,ensure the electrode application is perfect. Graphite electrodes are also used to refine steel in ladle furnaces and in other smelting processes.
Characteristics Of Graphite electrodes:
Anti-oxidation treatment for longevity.
High-purity,high-density,strong chemical stability.
High machining accuracy,good surface finishing.
High mechanical strength,low electrical resistance.
Resistant to cracking & spalling.
High resistance to oxidation and thermal shock.
The Length & Diameter & Permissible Deviation of Graphite Electrode

Nominal Diameter		Actual Diameter			Length (mm)	Tolerance
MM	Inch	Poppy	Mines	The Minimum Size Of The Black Part		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

Specification ★ Technical Characteristics of Graphite Electrode RP, HP, UHP

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 / ºC	≤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 ºC ~ 600 ºC), Custom manufacturing.

★ Technical Characteristics of High Density Graphite Electrode (HD)

Name		Unit	Nominal Diameter
			75-200 mm		250-300mm		400-500mm
			top grade	first grade	top grade	first grade	top grade	first grade
Resistivity (Not More Than)	Electrode	ΜΩ · m	8.0	9.0	8.0	9.0	8.0	9.0
	Nipple		7.5		7.5		7.5
Flexural Strength(not less than)	Electrode	MPa	10		9		8
	Nipple		13		13		13
Elastic Modulus(no more)	Electrode	GPa	12		12		12
	Nipple		14		14		14
Density(not less than)	Electrode	g / cm3	1.58		1.58		1.58
	Nipple		1.68		1.68		1.68
Coefficient Of Thermal Expansion (No More)	Electrode	10-6 / ºC	2.7.		2.7.		2.7.
	Nipple		2.5		2.5		2.5
Ash Content (not more than)		%	0.3		0.3		0.5
Note: 1. The coefficient of ash content and thermal expansion as a reference index.

★ Technical Characteristics of a Quasi-Superhigh-Gauge Graphite Electrode (EGPK-SHP)

Name		Unit	Nominal Diameter (mm)
			300, 350, 400	450, 500
Resistivity (not more than)	Electrode	ΜΩ · m	6.2	6.5
	Nipple		5.5	5.5
Flexural Strength(not less than)	Electrode	MPa	10.5	10
	Nipple		16	16
Elastic Modulus(no more)	Electrode	GPa	14	14
	Nipple		18	18
Density(not less than)	Electrode	g / cm3	1.65	1.64
	Nipple		1.72	1.7
Coefficient Of Thermal Expansion (no more)	Electrode	10-6 / ºC	1.5	1.5
	Nipple		1.4	1.4
Ash Content (not more than)		%	0.3	0.3
Note: 1. Zonality as a reference index.

Product Application
1. Low electric resistance
2. High density
3. Good electrical conductivity
4. High anti-oxidation capability
5. Precise machining accuracy
6. Low sulphur and low ash, not give steel second time impurity
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Packaging & Shipping Packaging: 1. Standard export carton/plywood crate 2. Customized shipping mark 3. QC Department Will Check In Case The Packing Method Isn't Safe Enough.
Shipping: 1.By courier,like DHL,UPS,FEDEX,etc.It is door to door,usually,3-4 days to arrive. 2.By air to the air port,usually,5-7 days to arrive. 3.By sea to sea port,usually,15-30 days to arrive.
Company Profile
Zhengzhou Rongsheng Refractory Material CO., LTD. Established in the early nineties of twenty century, with continuous innovation and development, now it is a comprehensive enterprise in refractory materials industry, covering metallurgy,building materials, electric power, chemical industry etc.
Our main products: refractory material for industrial furnaces, such as high-alumina brick, clay brick, silicon brick, high-strength diatomite brick, light weight insulation brick, low iron mullite brick, etc.; anti-stripping alumina brick, alkali proof brick, phosphate brick for cement industry; For the industrial furnace and power boiler, we can provide abrasive brick, corundum brick, mullite brick, wear resistant castable, corundum castable, high strength low cement castable, impervious material, plastic refractory, etc.
Certifications Rongsheng Refractory insists on pursuing the management idea of "honest, courtesy, innovation and professionalism" as the purpose,taking the "low price for better quality" as the foundation of enterprise development and creating "Rongsheng Brand" as the enterprise strategic goal. And Rongsheng provides satisfying, timely and efficient service for customers based on scientific management process, complete customer information management system and abundant products types.
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Q: What about the lead time for mass product?
A: The lead time is based on the quantity, about 7-12days. For graphite product, apply Dual-use items license need about 15-20
working days.