Small Diameter Furnace Graphite Electrode for electric arc furnace for steel and foundry industry

Short Description:

The graphite electrode is mainly made of petroleum coke and needle coke, and the coal bitumen is used as a binder. It is made by calcination, compounding, kneading, forming, baking, graphitization and machining.Small diameter graphite electrode,the diameter range is from 75mm to 225mm, the small diameter graphite electrodes are widely used in various industry production such as calcium carbide, the refinement of carborundum, or the smelting of rare metals, and Ferrosilicon plant refractory.

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Technical Parameter

Chart 1:Technical Parameter For Small Diameter Graphite Electrode

Diameter		Part	Resistance	Flexural Strength	Young Modulus	Density	C.T.E	Ash
Inch	mm	Part	μΩ·m	MPa	GPa	g/cm³	×10^-6/℃	%
3	75	Electrode	7.5-8.5	≥9.0	≤9.3	1.55-1.64	≤2.4	≤0.3
3	75	Nipple	5.8-6.5	≥16.0	≤13.0	≥1.74	≤2.0	≤0.3
4	100	Electrode	7.5-8.5	≥9.0	≤9.3	1.55-1.64	≤2.4	≤0.3
4	100	Nipple	5.8-6.5	≥16.0	≤13.0	≥1.74	≤2.0	≤0.3
6	150	Electrode	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
6	150	Nipple	5.8-6.5	≥16.0	≤13.0	≥1.74	≤2.0	≤0.3
8	200	Electrode	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
8	200	Nipple	5.8-6.5	≥16.0	≤13.0	≥1.74	≤2.0	≤0.3
9	225	Electrode	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
9	225	Nipple	5.8-6.5	≥16.0	≤13.0	≥1.74	≤2.0	≤0.3
10	250	Electrode	7.5-8.5	≥8.5	≤9.3	1.55-1.63	≤2.4	≤0.3
10	250	Nipple	5.8-6.5	≥16.0	≤13.0	≥1.74	≤2.0	≤0.3

Chart 2:Current Carrying Capacity For Small Diameter Graphite Electrode

Diameter		Current Load	Current Density	Diameter		Current Load	Current Density
Inch	mm	A	A/m²	Inch	mm	A	A/m²
3	75	1000-1400	22-31	6	150	3000-4500	16-25
4	100	1500-2400	19-30	8	200	5000-6900	15-21
5	130	2200-3400	17-26	10	250	7000-10000	14-20

Chart 3: Graphite Electrode Size & Tolerance For Small Diameter Graphite Electrode

Nominal Diameter		Actual Diameter(mm)		Nominal Length		Tolerance
Inch	mm	Max.	Min.	mm	Inch	mm
3	75	77	74	1000	40	-75~+50
4	100	102	99	1200	48	-75~+50
6	150	154	151	1600	60	±100
8	200	204	201	1600	60	±100
9	225	230	226	1600/1800	60/72	±100
10	250	256	252	1600/1800	60/72	±100

Main Application

Calcium carbide smelting
Carborundum production
Corundum refining
Rare metals smelting
Ferrosilicon plant refractory

Instruction Handing And Using For Graphite Electrodes

1.Remove the protective cover of the new electrode hole, check whether the thread in the electrode hole is complete and the thread is incomplete, contact the professional engineers to determine whether the electrode can be used;

2.Screw the electrode hanger into the electrode hole at one end, and place the soft cushion under the other end of the electrode to avoid damaging the electrode joint;(see pic1)

3.Use compressed air to blow the dust and sundries on the surface and hole of the connecting electrode, and then clean the surface and connector of the new electrode, clean it with a brush;(see pic2)

4.Lift the new electrode above the pending electrode to align with the electrode hole and fall slowly;

5.Use a proper torque value to properly lock electrode;(see pic3)

6.Clamp holder should be placed out of the alarm line.(see pic4)

7.In the refining period, it is easy to make the electrode thin and cause breaking, joint fall off, increase electrode consumption, please don’t use electrodes to raise carbon content.

8.Due to the different raw materials used by each manufacturer and the manufacturing process, the physical and chemical properties of electrodes and joints of each manufacturer. So in use, under general circumstances, Please don’t mixed use electrodes and joints produced by different manufacturers.