High definition Graphite Electrode Lump - 600mm high power graphite electrode – Hexi

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High definition Graphite Electrode Lump - 600mm high power graphite electrode – Hexi Detail:

Grade:High Power
Applicable furnace: EAF
Length: 2100mm/2400mm/2700mm
Nipple:3TPI/4TPI
Payment: T/T, L/C
Shipping Term: EXW/FOB/CIF
MOQ:10TON

Typical Properties of Graphite Electrode
Properties	Position	Unit	UHP	HP
300-600mm	650-800mm	300-800mm
Specific Resistance	Body	μΩm	4.8-5.8	4.6-5.8	5.8-6.6
Nipple	3.8-4.5	3.8-4.5	4.2-5.0
Bending Strength	Body	Mpa	10.0-14.0	10.0-14.0	10.0-13.0
Nipple	20.0-26.0	20.0-26.0	18.0-22.0
Young’s Modulus	Body	Gpa	9.0-13.0	10.0-14.0	8.0-12.0
Nipple	15.0-18.0	15.0-18.0	14.0-16.0
Bulk Density	Body	g/cm3	1.68-1.74	1.70-1.74	1.62-1.66
Nipple	1.77-1.82	1.78-1.84	1.74-1.80
CTE(100-600°C)	Body	×10 -6/ﾟC	1.1-1.4	1.1-1.4	1.6-1.9
Nipple	0.9-1.2	0.9-1.2	1.1-1.4
Ash Content	%	0.3	0.3	0.3

Compared with copper, graphite has advantages such as less consumption, faster discharge rate, lighter weight and smaller thermal expansion coefficient, so it gradually replaces copper electrode to become the mainstream of discharge processing materials. According to the capacity of the electric furnace, graphite electrodes of different diameters are used. For continuous use of the electrodes, the electrodes are connected by the threaded joint of the electrodes. The graphite electrodes used in steel making account for about 70-80% of the total consumption of the graphite electrodes.

Graphite electrode consumption and breakage is common in practice. What causes these? Here is the analysis for reference.

Factors	Body Breakage	Nipple Breakage	Loosening	Spalling	Electtode Loss	Oxidation	Electorde Consumption
Non-conductors in charge	◆	◆
Heavy scrap in charge	◆	◆
Transformer overcapacity	◆	◆		◆	◆	◆	◆
Three phase imbalance	◆	◆		◆	◆		◆
Phase Rotation		◆	◆
Excessive Vibration	◆	◆	◆
Clamper Pressure	◆		◆
Roof electrode socket not align with electrode	◆	◆
Cooling water sprayed on electrodes above roof							△
Scrap preheating							△
Secondary voltage too high	◆	◆		◆	◆		◆
Secondary current too high	◆	◆		◆	◆	◆	◆
Power too low	◆	◆		◆	◆		◆
Oil consumption too high				◆	◆		◆
Oxygen Consumption too high				◆	◆		◆
long time heating							◆
Electrode dipping					◆		◆
Dirty connection part		◆	◆
Poor maintenance for lift plugs and tightening tools		◆	◆
Insufficient connection		◆	◆

◆ Stands for being good factors

△ Stands for being bad factors

600mm high power graphite electrode2

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