UHP Graphite electrode

ASH: 0.1% graphite electrode (GE), 0.1% for graphite nipple

Bending Strength(MPA):18 for GE, 20 for graphite nipple

Bulk Density(G/CM3): 1.68 GE, 1.78 for graphite nipple

C.T.E.(100 -600 C, 10 -6/C): 1.6 GE, 1.4 graphite nipple

Resistivity(UOM): 5.5 for GE, 4.2 for graphite nipple

Diameter from 400-650mm (customized)

Different sizes available, including large diameter

Brief Description

Rongsheng Company major products are UHP graphite electrodes ranging from Φ300mm up top Φ700mm. High quality needle cokes are used to make UHP graphite electrodes through special process. The products are mainly used in steel- making electric arc furnaces and ladle furnaces with low consumption, good electric conductivity. Anti-oxidation and high flexible strength.etc.According to its high quality and low quality, it can be divided into ordinary power graphite electrode, high power graphite electrode and ultra high power graphite electrode.

Technical Characteristics

Name	Unit	diameter of electrode 300mm-600mm
		standard		Actual measurement
		Electrode	Nipple	Electrode	Nipple
Specific electrical resistivity	μOhm • m	6.2-6.5	5.5	5.0-6.5	4.5
Limit of mechanical resistance to bending	MPa	10.5	16	14-16	18-20
Elastic modulus	GPa	14	18	12	14
Ash content, not more than	%	0.5	0.5	0.5	0.5
Bulk density, not less than	g / cm3	1.64-1.65	1.70-1.72	1.72-1.75	1.78
Thermal coefficient of linear expansion (100-600 ° C)	× 10-6 / ℃	1.5	1.4	1.3	1.2

The Length & Diameter & Permissible Deviation

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	± 100	-100	-275
550	22	556	553
600	24	613	607

Current Capacity

Nominal diameter		Current throughput (A)	The current density (A / cm2)
Millimeters (mm)	Inch (inch)	Current throughput (A)	The current density (A / cm2)
250	10	9200-15100	21-30
300	12	13000-22000	20-30
350	14	20000-30000	20-30
400	16	25000-40000	19-30
450	18	32000-45000	19-27
500	20	38000-55000	18-27
550		48000-60000	18-24
600	24	52000-72000	18-24
700	27th	62000-95000	18-24

Application

Ultra-high-power graphite electrodes (EHSP-UHP) are manufactured for operation at currents with a density of more than 25A / cm2, and the graphite electrode UHP is mainly used for for ultra-high-power arc furnaces and powerful ladle furnaces.