Brand:graptek
Description:Graphite electrode nipples, designed with external thread, are used to joint two arc furnace graphite electrodes with the same diameter
Origin:China Hebei
FOB:perMetric Ton/Metric Tons0.8--1USD
Port:Tianjin
Payment Terms:L/C
Supply Ablility:60000Metric Ton/Metric Tons
Supply Time:Year
Packaging Details:Packing with wooden case and pallet,and enlace with baling band
Product detail: DE
Graphite electrodes nipples are used to connect two or more electrodes into column. And the purpose of that is to realize continuous use of electrodes in electric arc furnace steelmaking process. Nipples, with conventional external threads surface, are the
As a technical manufacturer, we know that the mismatch between the graphite electrode body and the nipple will lead to the electrode breaking during use. This not only just is an unproductive consumption in smelting, but also increases the amount of carbon in the molten steel. For these reasons, all electrode nipples are produced by our factory, not purchased.
- High bulk density, precision thread accuracy.
- Check the tolerance of nipples one by one.
- Bending strength limits are measured.
- High machining accuracy, good surface finishing.
- Outstanding resistance to breakage.
- Original factory production, not outsourcing.
Assembly diagram of graphite electrode nipple
Graphite electrodes with nipples
Graphite electrode columns for EAF smelting
Dimensions of nipple & socket
Electrode Dia. | Nipple Designation | Nipple | Socket | ||||
---|---|---|---|---|---|---|---|
Major Dia. (mm) |
Length (mm) |
Pitch Dia. (mm) |
Depth (mm) |
Thread Length (mm) |
|||
(inch) | (mm) | d1 | l1 | d4 | l2 | l3 | |
9 | 225 | 139T3N | 139.7 | 203.20 | 135.49 | 107.60 | 103.60 |
10 | 250 | 155T3N | 155.57 | 220.00 | 151.36 | 116.00 | 112.00 |
12 | 300 | 177T3N | 177.16 | 270.90 | 172.95 | 141.50 | 137.50 |
14/16 | 350/400 | 215T3N | 215.90 | 304.80 | 211.69 | 158.40 | 154.40 |
14/16 | 350/400 | 215T3L | 215.90 | 355.60 | 211.69 | 183.80 | 179.80 |
16/18 | 400/450 | 241T3N | 241.30 | 338.70 | 237.09 | 175.30 | 171.30 |
16/18 | 400/450 | 241T3L | 241.30 | 355.60 | 237.09 | 183.80 | 179.80 |
20 | 500 | 273T3N | 273.05 | 355.60 | 268.84 | 183.80 | 179.80 |
20 | 500 | 273T3L | 273.05 | 457.20 | 268.84 | 234.60 | 230.60 |
22 | 550 | 298T3L | 298.45 | 457.20 | 294.24 | 234.60 | 230.60 |
* Pin pitch diameter d2 is equal to socket pitch diameter d4. * Socket minor diameter d3 is equal to pitch diameter d4 minus 3.16 mm. * Other combinations of nominal diameter and joint are to be agreed upon between the supplier and user. |
Electrode Dia. | Nipple Designation | Nipple | Socket | ||||
---|---|---|---|---|---|---|---|
Major Dia. (mm) |
Length (mm) |
Pitch Dia. (mm) |
Depth (mm) |
Thread Length (mm) |
|||
(inch) | (mm) | d1 | l1 | d4 | l2 | l3 | |
9 | 225 | 139T4N | 139.70 | 177.80 | 136.54 | 94.90 | 90.90 |
10 | 250 | 152T4N | 152.40 | 190.50 | 149.24 | 101.30 | 97.30 |
12 | 300 | 177T4N | 177.80 | 215.90 | 174.64 | 114.00 | 110.00 |
14 | 350 | 203T4N | 203.20 | 254.00 | 200.04 | 133.00 | 129.00 |
14 | 350 | 203T4L | 203.20 | 304.80 | 200.04 | 158.40 | 154.40 |
16 | 400 | 222T4N | 222.25 | 304.80 | 219.09 | 158.40 | 154.40 |
16 | 400 | 222T4L | 222.25 | 355.60 | 219.09 | 183.80 | 179.80 |
18 | 450 | 241T4N | 241.30 | 304.80 | 238.14 | 158.40 | 230.60 |
18 | 450 | 241T4L | 241.30 | 355.60 | 238.14 | 183.80 | 179.80 |
20 | 500 | 269T4N | 269.88 | 355.60 | 266.72 | 183.80 | 179.80 |
20 | 500 | 269T4L | 269.88 | 457.20 | 266.72 | 234.60 | 230.60 |
22 | 550 | 298T4N | 298.45 | 355.60 | 295.29 | 183.80 | 179.80 |
22 | 550 | 298T4L | 298.45 | 457.20 | 295.29 | 234.60 | 230.60 |
24 | 600 | 317T4N | 317.50 | 355.60 | 314.34 | 183.80 | 179.80 |
24 | 600 | 317T4L | 317.50 | 457.20 | 314.34 | 234.60 | 230.60 |
* Pin pitch diameter d2 is equal to socket pitch diameter d4. * Socket minor diameter d3 is equal to pitch diameter d4 minus 3.16 mm. * Other combinations of nominal diameter and joint are to be agreed upon between the supplier and user. |
Electrode | Standard Weight of Nipples | ||||||||
---|---|---|---|---|---|---|---|---|---|
Nominal Electrode Size | TPI 3 | TPI 4 | |||||||
Dia. × L | T3N | T3L | T4N | T4L | |||||
inch | mm | lbs | kg | lbs | kg | lbs | kg | lbs | kg |
14 × 72 | 350 × 1800 | 32.0 | 14.5 | - | - | 24.3 | 11.0 | - | - |
16 × 72 | 400 × 1800 | 45.2 | 20.5 | 46.3 | 21.0 | 35.3 | 16.0 | 39.7 | 18.0 |
16 × 96 | 400 × 2400 | 45.2 | 20.5 | 46.3 | 21.0 | 35.3 | 16.0 | 39.7 | 18.0 |
18 × 72 | 450 × 1800 | 62.8 | 28.5 | 75.0 | 34.0 | 41.9 | 19.0 | 48.5 | 22.0 |
18 × 96 | 450 × 2400 | 62.8 | 28.5 | 75.0 | 34.0 | 41.9 | 19.0 | 48.5 | 22.0 |
20 × 72 | 500 × 1800 | 79.4 | 36.0 | 93.7 | 42.5 | 61.7 | 28.0 | 75.0 | 34.0 |
20 × 84 | 500 × 2100 | 79.4 | 36.0 | 93.7 | 42.5 | 61.7 | 28.0 | 75.0 | 34.0 |
20 × 96 | 500 × 2400 | 79.4 | 36.0 | 93.7 | 42.5 | 61.7 | 28.0 | 75.0 | 34.0 |
20 × 110 | 500 × 2700 | 79.4 | 36.0 | 93.7 | 42.5 | 61.7 | 28.0 | 75.0 | 34.0 |
22 × 84 | 550 × 2100 | - | - | - | - | 73.4 | 33.3 | 94.8 | 43.0 |
22 × 96 | 550 × 2400 | - | - | - | - | 73.4 | 33.3 | 94.8 | 43.0 |
24 × 84 | 600 × 2100 | - | - | - | - | 88.2 | 40.0 | 110.2 | 50.0 |
24 × 96 | 600 × 2400 | - | - | - | - | 88.2 | 40.0 | 110.2 | 50.0 |
24 × 110 | 600 × 2700 | - | - | - | - | 88.2 | 40.0 | 110.2 | 50.0 |
Electrode Diameter | inch | 8 | 9 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
---|---|---|---|---|---|---|---|---|---|---|---|
mm | 200 | 225 | 250 | 300 | 350 | 400 | 450 | 500 | 550 | 600 | |
Easing Moment | N.m | 200–260 | 300–340 | 400–450 | 550–650 | 800–950 | 900–1100 | 1100–1400 | 1500–2000 | 1900–2500 | 2400–3000 |