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https://www.graptek.com/ Graphite Electrode Lift Plug is used for the transfer of graphite electrode and electrode columns to or from the electric arc furnace. It is a safe and effective lifting device with hoisting ring. In this way, the accidental breakage of the electrode and thread injury caused by vibration are avoidable during the hoisting process.

Our lifting plugs are manufactured with high quality certified steel components and original graphite parts. The threads of the lifting plugs are exactly matched with the electrode socket. They also have the same character with the graphite electrode. While transporting the electrode columns, we recommend to use a shock absorber.

FEATURE High precision thread accuracy. Resistant to elevated temperature. High machining accuracy, good surface finishing. Outstanding resistance to breakage. Safe and effective for electrode transfer. Proof-tested by a certified calibrated hydraulic testing machine. APPLICATION There are three assembly graphite electrodes with lifting plugs.Graphite lift plugs for electrode transfer A overlooking picture of steel making plant.Graphite lift plugs in the electrodes Graphite lift plugs during the EAF steelmaking process.Graphite lift plugs in EAF smelting process SPECIFICATION Table 1: Specification of Graphite Electrode Lift Plug Item Graphite Pin Size Small Lifting Bail 9" H × 8" W Medium Lifting Bail 19" H × 8" W Large Lifting Bail 39" H × 8" W Plug Capacity mm in kg lbs kg lbs kg lbs kg lbs GPL-01 177.17 6.975 17 38 24 54 45 99 1089 2400 GPL-02 203.2 8.5 19 41 26 58 47 103 1860 4100 GPL-03 222.25 8.75 19 42 27 59 47 104 1860 4100 GPL-04 241.3 9.5 21 46 29 63 49 108 2359 5200 GPL-05 269.88 10.625 29 63 38 84 59 131 3583 7900 GPL-06 298.45 11.75 33 73 43 94 64 141 5897 13000 GPL-07 317.5 12.5 34 75 44 96 65 143 5897 13000 GPL-08 374.65 14.75 52 115 62 136 83 183 8165 18000 GPL-09 406.4 16 60 133 70 154 91 201 9525 21000 GPL-10 431.8 17 73 161 83 182 104 229 9979 22000 * The weights of graphite electrode lift plug are approximate based on standard bail. TEST & STORAGE Use nipple thread measurement device to inspect the plug pin.Tested by nipple thread measurement device The graphite electrodes lifting plugs are packed in the carton with foam.Packed in carton There are seven packed graphite electrodes lifting plugs.Packed graphite electrode lifting plugs

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DESCRIPTION

https://www.graptek.com/products/graphite-electrode-nipple.html Graphite Electrode Nipple 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 important clamping device to extend the electrode length. Doing this avoids the unproductive consumption in smelting.

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.

FEATURE 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. APPLICATION A assembly schematic diagram of graphite electrode nipple.Assembly diagram of graphite electrode nipple There are a lot of graphite electrodes with nipples arranged in a row.Graphite electrodes with nipples Graphite electrodes are assembled into an electrode column using the electrode nipples.Graphite electrode columns for EAF smelting SPECIFICATION Table 1: Technical Specification of Graphite Electrode Nipple A schematic diagram of graphite electrode nipple and socket.Dimensions of nipple & socket Table 2: Dimensions of Nipple & Sockets (TPI 3) Table 3: Dimensions of Nipple & Sockets (TPI 4) Table 4: Standard Electrode Sizes & Nipple Weights Table 5: Coupling Torque Reference for Nipple & Electrode

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https://www.graptek.com/products/rp-graphite-electrode.html RP Graphite Electrode, referred to moulded columns of graphite, are used as the high temperature conductive material for electric arc furnaces. Regular power graphite electrodes are specified with allowable current density less than 17 A/cm2. The quality of the graphite electrode determines the productivity and cost of EAF steelmaking.

As a manufacturer, we also provide UHP grade graphite electrodes and HP grade graphite electrodes for ultra high power or high power electric arc furnaces. In addition to being used in arc furnaces, graphite electrodes are also widely used in submerged arc furnaces and Ladle furnaces.

FEATURE High current carrying capacity. Outstanding resistance to breakage. High resistance to oxidation and thermal shock. Good dimension stability, not easy to deform. High mechanical strength, low electrical resistance. High machining accuracy, good surface finishing. APPLICATION Graphite electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.

Eccentric bottom tapping arc furnace with RP grade graphite electrodes.Eccentric bottom tapping arc furnace A picture about the process of regular power arc furnace steelmaking.RP graphite electrode for EAF steelmaking RP grade graphite electrodes are used in regular power electric arc furnace steelmaking.RP graphite electrode for regular power EAF SPECIFICATION Table 1: Technical Specification of RP Graphite Electrode Dia. (inch) Resistance (≤, μ?·m) Density (≥, g/cm3) Flexure Strength (≥, MPa) Elastic Modulus (≤, GPa) Ash Content (≤, %) CTE (100 °C – 60 °C) (≤, 10-6/°C) Current Load (A) Current Density (A/cm2) 8 8.5 1.53 8.5 9.3 0.5 2.9 5000–6900 15–21 9 8.5 1.53 8.5 9.3 0.5 2.9 6100–8600 15–21 10 8.5 1.53 8.5 9.3 0.5 2.9 7000–10000 14–20 12 8.5 1.53 8.5 9.3 0.5 2.9 10000–13000 14–18 14 8.5 1.52 7.0 9.3 0.5 2.9 13500–18000 14–18 16 8.5 1.52 7.0 9.3 0.5 2.9 18000–23500 14–18 18 8.5 1.52 7.0 9.3 0.5 2.9 22000–27000 13–17 20 8.5 1.52 7.0 9.3 0.5 2.9 25000–32000 13–16 22 8.5 1.52 7.0 9.3 0.5 2.9 32000–40000 13–16 24 8.5 1.52 7.0 9.3 0.5 2.9 38000–47000 13–16 Table 2: Graphite Electrode Size & Tolerance Diameter (mm) Length (mm) Nominal Diameter Actual Diameter Nominal Length Tolerance Short Length (inch) (mm) (max.) (min.) (rough spot) 8 200 205 200 197 1600 ±100 -275 9 225 230 225 222 1600 10 250 256 251 248 1600/1800 12 300 307 302 299 1600/1800 14 350 357 352 349 1600/1800 16 400 409 403 400 1600/1800/2000/2200 18 450 460 454 451 1600/1800/2000/2200 20 500 511 505 502 1800/2000/2200/2400 22 550 562 556 553 1800/2000/2200/2400 24 600 613 607 604 2000/2200/2400 SURFACE QUALITY There should be less than two defects or holes on the electrode surface, the maximum size of which is mentioned in the below chart. There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width should be 0.3 mm to 1.0 mm. The width of black area on electrode surface should be less than 1/10 of the electrode circumference and the length should be less than 1/3 of the electrode. SpecificationDefect Dimension Nominal Diameter of Graphite Electrode (mm) 300–400 450–600 Diameter (mm) 20–40 (< 20 mm should be negligible) 30–50 (< 30 mm should be negligible) Depth (mm) 5–10 (< 5 mm should be negligible) 10–15 (< 10 mm should be negligible)

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DESCRIPTION

https://www.graptek.com/products/rp-graphite-electrode.html RP Graphite Electrode, referred to moulded columns of graphite, are used as the high temperature conductive material for electric arc furnaces. Regular power graphite electrodes are specified with allowable current density less than 17 A/cm2. The quality of the graphite electrode determines the productivity and cost of EAF steelmaking.

As a manufacturer, we also provide UHP grade graphite electrodes and HP grade graphite electrodes for ultra high power or high power electric arc furnaces. In addition to being used in arc furnaces, graphite electrodes are also widely used in submerged arc furnaces and Ladle furnaces.

FEATURE High current carrying capacity. Outstanding resistance to breakage. High resistance to oxidation and thermal shock. Good dimension stability, not easy to deform. High mechanical strength, low electrical resistance. High machining accuracy, good surface finishing. APPLICATION Graphite electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.

Eccentric bottom tapping arc furnace with RP grade graphite electrodes.Eccentric bottom tapping arc furnace A picture about the process of regular power arc furnace steelmaking.RP graphite electrode for EAF steelmaking RP grade graphite electrodes are used in regular power electric arc furnace steelmaking.RP graphite electrode for regular power EAF SPECIFICATION Table 1: Technical Specification of RP Graphite Electrode Dia. (inch) Resistance (≤, μ?·m) Density (≥, g/cm3) Flexure Strength (≥, MPa) Elastic Modulus (≤, GPa) Ash Content (≤, %) CTE (100 °C – 60 °C) (≤, 10-6/°C) Current Load (A) Current Density (A/cm2) 8 8.5 1.53 8.5 9.3 0.5 2.9 5000–6900 15–21 9 8.5 1.53 8.5 9.3 0.5 2.9 6100–8600 15–21 10 8.5 1.53 8.5 9.3 0.5 2.9 7000–10000 14–20 12 8.5 1.53 8.5 9.3 0.5 2.9 10000–13000 14–18 14 8.5 1.52 7.0 9.3 0.5 2.9 13500–18000 14–18 16 8.5 1.52 7.0 9.3 0.5 2.9 18000–23500 14–18 18 8.5 1.52 7.0 9.3 0.5 2.9 22000–27000 13–17 20 8.5 1.52 7.0 9.3 0.5 2.9 25000–32000 13–16 22 8.5 1.52 7.0 9.3 0.5 2.9 32000–40000 13–16 24 8.5 1.52 7.0 9.3 0.5 2.9 38000–47000 13–16 Table 2: Graphite Electrode Size & Tolerance Diameter (mm) Length (mm) Nominal Diameter Actual Diameter Nominal Length Tolerance Short Length (inch) (mm) (max.) (min.) (rough spot) 8 200 205 200 197 1600 ±100 -275 9 225 230 225 222 1600 10 250 256 251 248 1600/1800 12 300 307 302 299 1600/1800 14 350 357 352 349 1600/1800 16 400 409 403 400 1600/1800/2000/2200 18 450 460 454 451 1600/1800/2000/2200 20 500 511 505 502 1800/2000/2200/2400 22 550 562 556 553 1800/2000/2200/2400 24 600 613 607 604 2000/2200/2400 SURFACE QUALITY There should be less than two defects or holes on the electrode surface, the maximum size of which is mentioned in the below chart. There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width should be 0.3 mm to 1.0 mm. The width of black area on electrode surface should be less than 1/10 of the electrode circumference and the length should be less than 1/3 of the electrode. SpecificationDefect Dimension Nominal Diameter of Graphite Electrode (mm) 300–400 450–600 Diameter (mm) 20–40 (< 20 mm should be negligible) 30–50 (< 30 mm should be negligible) Depth (mm) 5–10 (< 5 mm should be negligible) 10–15 (< 10 mm should be negligible)

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https://www.graptek.com/products/hp-graphite-electrode.html HP Graphite Electrode is the conducting element for electric arc furnaces steelmaking. It is made of petroleum coke, needle coke, coal pitch and produced by a series of strict production processes. High-current lines insert through the graphite electrode port inside the furnace body. This will releases electric energy in the arc furnace to heat the furnace.

The demand for the larger diameter electrodes has been increasing as EAF furnace sizes become larger. Graphite electrodes with diameter of 500 mm or 600 mm have become increasingly popular in recent years.

FEATURE Anti-oxidation treatment for longevity. High-purity, high-density, strong chemical stability. High machining accuracy, good surface finishing. High mechanical strength, low electrical resistance. Resistant to cracking & spalling. High resistance to oxidation and thermal shock. APPLICATION Graphite electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.

DC electric arc furnace. AC electric arc furnace. Submerged arc furnace. A close up picture about the electric arc furnace smelting process.Graphite electrode for submerged arc furnace Graphite electrodes are used in alternating current electric arc furnace steelmaking.Graphite electrode for AC arc furnace Graphite electrodes are used in direct current electric arc furnace steelmaking.Graphite electrode for DC arc furnace SPECIFICATION Table 1: Technical Specification of HP Graphite Electrode Diameter Resistance (≤, μ?·m) Density (≥, g/cm3) Flexure Strength (≥, MPa) Elastic Modulus (≤, GPa) Ash Content (≤, %) CTE (100 °C – 600 °C) (≤, 10-6/°C) Current Load (A) Current Density (A/cm2) inch mm 8 200 6.5 1.62 10.5 12 0.3 2.4 5500–9000 18–25 9 225 6.5 1.62 10.5 12 0.3 2.4 6500–10000 18–25 10 250 6.5 1.62 10.5 12 0.3 2.4 8000–13000 18–25 12 300 6.5 1.62 10.5 12 0.3 2.4 13000–17400 17–24 14 350 6.5 1.62 10.5 12 0.3 2.4 17400–24000 17–24 16 400 6.5 1.62 10.5 12 0.3 2.4 21000–31000 16–24 18 450 6.5 1.60 9.8 12 0.3 2.4 25000–40000 15–24 20 500 6.5 1.60 9.8 12 0.3 2.4 30000–48000 15–24 22 550 6.5 1.60 9.8 12 0.3 2.4 37000–57000 15–23 24 600 6.5 1.60 9.8 12 0.3 2.4 44000–67000 15–23 Table 2: Graphite Electrode Size & Tolerance Diameter (mm) Length (mm) Nominal Diameter Actual Diameter Nominal Length Tolerance Short Length (inch) (mm) (max.) (min.) (rough spot) 8 200 205 200 197 1600 ±100 -275 9 225 230 225 222 1600 10 250 256 251 248 1600/1800 12 300 307 302 299 1600/1800 14 350 357 352 349 1600/1800 16 400 409 403 400 1600/1800/2000/2200 18 450 460 454 451 1600/1800/2000/2200 20 500 511 505 502 1800/2000/2200/2400 22 550 562 556 553 1800/2000/2200/2400 24 600 613 607 604 2000/2200/2400 SURFACE QUALITY There should be less than two defects or holes on the electrode surface, the maximum size of which is mentioned in the below chart. There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width should be 0.3 to 1.0 mm. The width of black area on electrode surface should be less than 1/10 of the electrode circumference and the length should be less than 1/3 of the electrode. SpecificationDefect Dimension Nominal Diameter of Graphite Electrode (mm) 300–400 450–600 Diameter (mm) 20–40 (< 20 mm should be negligible) 30–50 (< 30 mm should be negligible) Depth (mm) 5–10 (< 5 mm should be negligible) 10–15 (< 10 mm should be negligible) DOWNLOAD

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https://www.graptek.com/products/uhp-graphite-electrode.html UHP Graphite Electrode is used for the recycling of steel in the electric arc furnace industry. Its main ingredient is high-value needle coke which is made from either petroleum or coal tar. Graphite electrodes are finished with a cylinder shape and machined with threaded areas at each end. In this way, the graphite electrodes can be assembled into an electrode column using electrode nipple.

In order to meet the requirement of higher work efficiency and lower total cost, large capacity ultra-high power arc furnaces are becoming more and more popular. Because of this, UHP graphite electrodes with diameters of over 500 mm will dominate market.

FEATURE Withstand large currents, high discharge rate. Good dimension stability, not easy to deform. Resistant to cracking & spalling. High resistance to oxidation and thermal shock. High mechanical strength, low electrical resistance. High machining accuracy, good surface finishing. APPLICATION Graphite electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.

DC electric arc furnace. AC electric arc furnace. Submerged arc furnace. Ladle furnace. A worker is operating the eccentric bottom tapping electric furnace with UHP graphite electrodes.Eccentric bottom tapping electric furnace A picture about vacuum induction melting process.Graphite electrode for vacuum ladle furnace Graphite electrodes are used in electric arc furnace steelmaking.Graphite electrode for electric arc furnace SPECIFICATION Table 1: Technical Specification of UHP Graphite Electrode Dia. (inch) Resistance (≤, μ?·m) Density (≥, g/cm3) Flexure Strength (≥, MPa) Elastic Modulus (≤, GPa) Ash Content (≤, %) CTE (100 °C – 600 °C) (≤, 10-6/°C) Current Load (A) Current Density (A/cm2) 10 5.5 1.67 11 14 0.3 1.5 8100–12200 20–30 12 5.5 1.67 11 14 0.3 1.5 15000–22000 20–30 14 5.5 1.67 11 14 0.3 1.5 20000–30000 20–30 16 5.5 1.67 11 14 0.3 1.5 25000–40000 19–30 18 5.5 1.66 11 14 0.3 1.5 32000–45000 19–27 20 5.5 1.66 11 14 0.3 1.4 38000–55000 18–27 22 5.5 1.66 11 14 0.3 1.4 42000–66000 17–26 24 5.5 1.66 11 14 0.3 1.4 49000–76000 17–26 Table 2: Graphite Electrode Size & Tolerance Diameter (mm) Length (mm) Nominal Diameter Actual Diameter Nominal Length Tolerance Short Length (inch) (mm) (max.) (min.) (rough spot) 10 250 256 251 248 1600/1800 ±100 -275 12 300 307 302 299 1600/1800 14 350 357 352 349 1600/1800 16 400 409 403 400 1600/1800/2000/2200 18 450 460 454 451 1600/1800/2000/2200 20 500 511 505 502 1800/2000/2200/2400 22 550 562 556 553 1800/2000/2200/2400 24 600 613 607 604 2000/2200/2400 SURFACE QUALITY There should be less than two defects or holes on the electrode surface, the maximum size of which is mentioned in the below chart. There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width should be 0.3 to 1.0 mm. The width of black area on electrode surface should be less than 1/10 of the electrode circumference and the length should be less than 1/3 of the electrode. SpecificationDefect Dimension Nominal Diameter of Graphite Electrode (mm) 300–400 450–600 Diameter (mm) 20–40 (< 20 mm should be negligible) 30–50 (< 30 mm should be negligible) Depth (mm) 5–10 (< 5 mm should be negligible) 10–15 (< 10 mm should be negligible) DOWNLOAD