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Graphite electrode HP

Graphite electrodes are made of the highest quality petroleum coke and imported needle coke, which are widely used in electric arc furnaces and refining furnaces, and are suitable for the production of alloy steel and other metal and non-metal materials. Varieties include: ordinary power, high power, quasi-ultra-high power (non-national standard), ultra-high power graphite electrode, the specification is Φ300-Φ600, the product has low resistivity, good electrical and thermal conductivity, good o

Product Description:

Graphite electrodes are made of the highest quality petroleum coke and imported needle coke, which are widely used in electric arc furnaces and refining furnaces, and are suitable for the production of alloy steel and other metal and non-metal materials. Varieties include: ordinary power, high power, quasi-ultra-high power (non-national standard), ultra-high power graphite electrode, the specification is Φ300-Φ600, the product has low resistivity, good electrical and thermal conductivity, good oxidation resistance, thermal shock resistance And strong resistance to mechanical vibration, high mechanical strength, high mechanical processing strength and so on.

Application field
The use of graphite electrodes is mainly reflected in the following points:
(1) Used in electric arc steelmaking furnace. Graphite electrodes for steelmaking account for about 70-80% of the total amount of graphite electrodes.
(2) Used in submerged heat electric furnace. Graphite electrode submerged thermal electric furnace is mainly used to produce ferroalloy, pure silicon, yellow phosphorus, matte and calcium carbide, etc.
(3) For resistance furnace. It is used in the production and processing of graphite products, melting glass and production of silicon carbide in resistance furnaces.
Selection of product specifications
The choice of graphite electrodes is more or less related to the capacity of the electric furnace, the type of the electric furnace, the size of the transformer, the size of the secondary current, and the type of smelted steel. We can match the appropriate electrode for the customer according to the furnace type, transformer size, and current. .

Product Instructions

1. Special tools should be used for graphite electrode hoisting, crowbars are strictly prohibited, and collision damage should be prevented during handling.
2. Graphite electrodes are prohibited from being soaked in rain, snow and water, and should be kept dry.
3. Before connecting the graphite electrode, carefully check whether the electrode joint hole is intact, whether the joint thread is damaged, and whether the joint bolt is lost.
4. The dust and sundries in the joints and joint holes must be blown off with compressed air, and other items are strictly prohibited to be used for cleaning.
5. Before use, it should be dried in a drying oven, the oven temperature should not exceed 150°C, and the drying time should not be less than 30 hours.
6. The electrodes should be closely connected, and a professional torque wrench should be used to prevent excessive or small force, and no tilting is allowed.
7. The electrode chuck should be clamped, not loose and in good contact, and no arc should be generated.
8. In order to prevent the electrode from breaking, the small pieces of material in the furnace should be placed on the upper part, and the insulating material should not be placed in the upper part. The working current of the electrode should be compatible with the allowable current of the electrode in the manual.

The specification ofgraphite electrode and nipples

Standard size of graphite electrode
Specifications
(inch)
mm) Allowable Diameter(mm) mm) Allowable Length(mm)
Nominal
Diameter
Max. Min.
Nominal
Length
Max. Min.
12 300 307 302 1800 1875 1700
14 350 357 352 1600 1700 1500
1800 1875 1700
16 400 409 403 1600 1500 1500
1800 1875 1700
2100 2175 1975
18 450 460 454 1800 1875 1700
2100 2175 1975
2400 2475 2275
20 500 511 505 1800 1875 1700
2100 2175 1975
2400 2475 2275
22 550 562 556 2100 2175 1975
2400 2475 2275
24 600 613 607 2100 2175 1975
2400 2475 2275
2800 2850 2550
26 650 663 657 2400 2475 2275
28 700 714 708 2400 2475 2275
2800 2850 2550
Remark: If there are special specifications, the supplier and the buyer will negotiate.

Standard Dimensions for nipples and socket
Nominal Electrode Diameter (mm) (inch) Thread Designation [A] Diameter Max.(mm) [L] Length Max.(mm) [S] Depth of socket Min.(mm)
Average
Weight(kg)
Other Designation
IEC Diamejer Length
3TPI
Pich of Thread:
8.467mm
300 12 10T3 155.57 220 116 5 N155T3N 6.125 8.66
12T3 177.16 270.9 141.5 8.2 N177T3N 6.975 10.66
350 14 12T3 177.16 270.9 141.5 8.2 N177T3N 6.975 10.66
14T3 215.9 0 304.8 158.4 14.5 N215T3N 8.5 12
14T3L 215.9 0 355.6 183.8 17 N215T3L 8.5 14
400 16 14T3 215.9 0 304.8 158.4 14.5 N215T3N 8.5 12
14T3L 215.9 0 355.6 183.8 17 N215T3L 8.5 14
16T3 241.3 338.7 175.3 20.5 N241T3N 9.5 13.33
16T3L 241.3 355.6 183.8 21 N241T3L 9.5 14
450 18 16T3 241.3 338.7 175.3 20.5 N241T3N 9.5 13.33
16T3L 241.3 355.6 183.8 21 N241T3L 9.5 14
18T3 273.05 355.6 183.8 28 N273T3N 10.75 14
18T3L 273.05 457.2 234.6 34 N273T3L 10.75 18
500 20 18T3 273.05 355.6 183.8 28 N273T3N 10.75 14
18T3L 273.05 457.2 234.6 34 N273T3L 10.75 18
20T3 298.45 372.5 192.2 36 N298T3N 11.75 14.66
4TPI
(Pitch of Thread:
6.350mm)
300 12 12T4 177.8 215.9 114 7.2 N177T4N 7 8.5
350 14 14T4 203.2 254 133 11.2 N203T4N 8 10
400 16 16T4 222.25 304.8 158.4 15.5 N222T4N 8.75 12
16T4L 222.25 355-60 183.8 17.4 N222T4L 8.75 14
18T4 241.3 304.8 158.4 19 N241T4N 9.5 12
18T4L 241.3 355.6 183.8 21 N241T4L 9.5 14
450 18 18T4 241.3 304.8 158.4 19 N241T4N 9.5 12
18T4L 241.3 355.6 183.8 21 N241T4L 9.5 14
20T4L 269.88 457.2 234.6 33.4 N269T4N 10.625 18
500 20 20T4 269.88 355.6 183.8 27.2 N269T4N 10.625 14
20T4L 269.88 457.2 234.6 33.4 N269T4N 10.625 18
550 22 22T4 298.45 355.6 183.8 35 N298T4N 11.75 14
22T4L 298.45 457.2 234.6 42.5 N298T4L [11.75 18
600 24 24T4 317.5 355.6 183.8 40 N317T4N 12.5 14
24T4L 317.5 457.2 234.6 48 N317T4L 12.5 18
650 26 26T4 355.6 457.2 234.6 64 N355T4N 14 18
26T4L 355.6 558.8 285.4 74 N355T4L 14 22
700 28 28T4 374.65 457.2 234.6 71.5 N374T4N 14.75 18
28T4L 374.65 558.8 285.4 84 N374T4L 14.75 22
Info from International Electrotechnical Commission
Remark:If there are special specification requirements,both sides consult supply and demand.


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