High-Current HP Graphite Electrodes for Casting Kiln and Electric Arc Furnace

Product Description

Product Description
High-current HP Graphite Electrodes for Casting Kiln and  Electric Arc Furnace

 Graphite electrode is defined as an electrode that is employed to offer high level of electrical conductivity and the capability to sustain extremely high level of dissipated heat. Graphite electrodes are primarily utilized in the manufacturing of electric arc furnace (EAF) steel and refinement of steel, and the equivalent smelting process,like silicon,ferro-alloy, white phosphorus/ yellow phosphorus and etc.
By Product , graphite electrode can be classified as: Ultra-high Power (UHP), High Power (HP), Regular Power (RP);
By Application, it's usually defined as Electric Arc Furnace (EAF), Ladle Furnace (LF) & Others.
Technical specification
 

Item		Unit	Graphite Electrode
			RP	HP	UHP
			φ300-φ800mm	φ300-φ800mm	φ300-φ500mm	φ550-φ800mm
			Typical Value	Typical Value	Typical Value	Typical Value
Resistivity	Electrode	μΩm	7.0-10.0	5.8-6.6	4.5-5.8	4.6-5.8
	Nipple		4.0-4.5	3.5-4.0	3.5-4.0	3.5-4.0
Modulus of Rupture	Electrode	Mpa	8.0-10.0	10.0-13.0	10.0-14.0	10.0-14.0
	Nipple		19.0-22.0	20.0-23.0	20.0-24.0	22.0-26.0
Young's Modulus	Electrode	Gpa	7.0-9.3	8.0-12.0	9.0-13.0	10.0-14.0
	Nipple		12.0-14.0	14.0-16.0	15.0-18.0	16.0-19.0
Bulk Density	Electrode	g/cm3	1.53-1.56	1.64-1.68	1.68-1.74	1.70-1.74
	Nipple		1.70-1.74	1.75-1.80	1.78-1.82	1.80-1.84
CTE (100-600ºC)	Electrode	10-6/ºC	2.2-2.6	1.6-1.9	1.1-1.4	1.1-1.4
	Nipple		2.0-2.5	1.1-1.4	0.9-1.2	0.9-1.2
Ash		%	0.5	0.3	0.3	0.3

Size chart 
 

Nominal Diameter		Actual Diameter (Send inquiry to us to get free quote)			Nominal Length(mm)
mm	Inch	Max(mm)	Min(mm)	Min.Crust Diameter(mm)
150	6	154	149	146	1500-1800
200	8	205	200	197	1500-1800
250	10	256	251	248	1500-2100
300	12	307	302	299	1500-2100
350	14	357	352	349	1500-2400
400	16	409	403	400	1500-2400
450	18	460	454	451	1500-2400
500	20	511	505	502	1800-2700
550	22	562	556	553	1800-2700
600	24	613	607	604	2100-2700
650	26	663	657	654	2100-2700
700	28	714	708	705	2100-2700
750	30	765	759	756	2400-2700
800	32	816	810	807	2400-2700

Advantage

* Annual output of 80,000 tons, timely delivery;
* Low resistivity
* High temperature strength
* Good thermal conductivity and electrical conductivity
* Low thermal expansion coefficient
* Low ash,Its ash content is controlled within 3%.
* Dense and equal structure,Low graphite electrode consumption.
* Good oxidation resistance
* High mechanical strength
* Needle coke content accounts for 80%, good quality.

Packing
 
Wooden pallet
 
Storage/usage Instructions
Graphite electrode should avoid the moisture, the dust,the contamination and collision.
You should be careful when moving and pilling electrode with forklift. Collision and overload is forbidden to avoid slide or breakage.
When loading and unloading with bridge crane, operator must follow instruction accordingly . No standing under crane.   Electrode should be stored in clean and dry place,when pilling up outdoors, it should be covered with rain-proof tarpaulin.
When lift electrode, use revolved resilient hanger and put soft truss pad under the electrode nipple to avoid breakage of thread.
Before connecting, clean electrode threads and sockets with compressed air.
Lift the electrode to furnace, using hoister with resilient hanger, find out the center and move slowly downwards.
Clean small opening with compressed air when upper and lower electrodes declined to gap between 20-30mm.
9.9 Use special torque wrench to tighten according to suggested moment of force as per the specifications given in the table; mechanical way, hydraulic pressure or wind pressure equipment should be available for need in case.
Electrode clamp holder must be placed between the two white guard lines. Clamp holder and interfaces of the electrode must be cleaned regularly with the allowed good touch. Cooling water jacket of the clamp holder should be tight to prevent water leakage.
The upper and of electrode should be covered in order to avoid oxidation and dust.
To avoid the electrode breakage, insulating materials should NOT be put into the furnace The working current of electrode must NOT exceed the max. allowed current.
In order to avoid electrode breakage, during materials feeding in furnace, put the large materials in lower part and small materials in upper part.