HD Graphite Electrode

Graphite electrode series products are made of high quality carbon materials.The main products are: RP graphite electrode, smelting furnace shaped carbon block, impregnated graphite electrode, high power graphite electrode, graphite crucible, electrode paste, recarburizer, and non-standard specifications of shaped carbon products.

Mainly used in steelmaking electric arc furnace, refining furnace, industrial silicon furnace, yellow phosphorus furnace, corundum furnace, etc., as conductive usage.

PRODUCT DESCRIPTION

NAME: HD Graphite Electrode

MODEL: 200MM

Introduction

The graphite electrode is mainly made of petroleum coke and needle coke, and the coal asphalt is used as a binder. It is made by calcination, distributing, kneading, forming, roasting, graphitization and machining. It's a conductor which release electric energy in the form of electric arc in the electric arc furnace heats and melts the material. the charge can be divided into a regular power graphite electrode, a high power graphite electrode and an ultra high power graphite electrode according to its quality index. The main raw material for graphite electrode production is petroleum coke. The regular power graphite electrode can be added with a small amount of pitch coke. The sulfur content of petroleum coke and pitch coke cannot exceed 0.5%. Needle coke is also required for the production of high power or ultra high power graphite electrodes.

Advantage

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

Production characteristics

The production period is long. The production period of regular power graphite electrodes is about 45 days, the production period of ultra high power graphite electrodes is more than 70 days, and the production period of graphite electrode joints (nipples) requiring multiple impregnation is more longer.

Application

Mainly used in electric arc steelmaking furnaces, refining furnaces, industrial silicon furnaces, yellow phosphorus furnaces, electric resistance furnaces, etc., as conductive usage. The graphite electrode blank is also used to process a variety of shaped graphite products such as enamel, mold, boat and heating element.

Technical Properties of Graphite Electrodes & Nipples

Item		Unit	HD Graphite Electrode
Specific Resistance ≤	Electrodes (E)	μΩ.m	8.0
	Nipple (N)		7.5
Flexural Strength≥	Electrodes (E)	MPa	10
	Nipple (N)		13.0
Elastic Modulus ≤	Electrodes (E)	GPa	12.0
	Nipple (N)		14.0
Bulk Density ≥	Electrodes (E)	ɡ/㎝³	1.58
	Nipple (N)		1.68
100-600(C.T.E.) ≤	Electrodes (E)	10-6/℃	2.7
	Nipple (N)		2.5
Ash Content ≤	Electrodes (E)	%	0.3
	Nipple (N)		0.3
Real Density ≥	Electrodes (E)	ɡ/㎝³	2.18
	Nipple (N)		2.2

 

Allowable Current of Graphite Electrodes

Norminal Diameter		HD Graphite Electrode
		Allowable Current
mm	in	A	A/cm2
75	3	1300-2000	29-45
100	4	1800-3000	22-37
130	5.2	2800-4200	21-31
150	6	4000-5000	22-28
175	7	4500-6900	18-28
200	8	5500-9000	15-28
225	9	6200-10600	15-26
250	10	8000-12000	16-24
300	12	11000-16000	15-22
350	14	15000-22000	15-22
400	16	20000-28000	15-22

Size & Dviation of Graphite Electrode

						(Unit):mm
Norminal  Diameter		Actual Diameters			Length
mm	in	Max.	Min.	Black Part  Min.	Standard	Allow Deviation	Allow Ruler  Deviation
75	3	78	73	72	1000	+/-50	-50 -225
100	4	103	98	97	1200	+/-50	-50 -225
130	5.2	132	127	126	1200	+/-50	-50 -225
150	6	154	149	146	1600	+/-100	-100 -275
175	7	179	174	171	1600	+/-100	-100 -275
200	8	205	200	197	1600	+/-100	-100 -275
225	9	230	225	222	1600	+/-100	-100 -275
250	10	256	251	248	1600/1800	+50/-100	-100 -275
300	12	307	302	299	1600/1800	+/-100	-100 -275
350	14	357	352	349	1600/1800	+/-100	-100 -275
400	16	409	403	400	1600/1800	+/-100	-100 -275

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