Choynak pechlari uchun RP grafit elektrodi
Grafit elektrodlarining tasnifi
Elektr kamonli po'latdan yasalgan pechni oddiy quvvatli elektr pechga (tonna uchun taxminan 300KVA), yuqori quvvatli elektr pechga (tonna uchun taxminan 400kVA) va ultra yuqori quvvatli elektr pechga (tonna uchun 500 ~ 1200KV / A) bo'lish mumkin. o'choq quvvati tonnasiga transformator quvvati.
Elektr o'choqli po'lat ishlab chiqarishning elektr quvvati darajasining tasnifiga ko'ra va elektrod ishlab chiqarishda ishlatiladigan xom ashyo va tayyor elektrodning fizik-kimyoviy ko'rsatkichlari farqiga ko'ra, grafit elektrod uch turga bo'linadi: muntazam quvvatli grafit elektrod (RP) , yuqori quvvatli grafit elektrod (HP) va ultra yuqori quvvatli grafit elektrod (UHP).
RP grafit elektrodining kiritilishi
RP grafit elektrodi asosan xom ashyo sifatida neft koksidan va kaltsiylash, yig'ish, yoğurma, qoliplash, pishirish, grafitizatsiya va ishlov berish orqali bog'lovchi sifatida ko'mir asfaltidan tayyorlanadi.
Grafit elektrod - bu po'lat qoldiqlarini isitish va eritish uchun elektr kamon pechida elektr energiyasini chiqaradigan o'tkazgich.
Xususiyatlari
RP grafit elektrodi past grafitlanish harorati bilan neft koksi bilan ishlab chiqariladi.u quyidagi xususiyatlarga ega:
1.Yuqori qarshilik
2.Katta chiziqli kengayish koeffitsienti
3.Yomon termal zarba qarshiligi
4.Ruxsat etilgan oqim zichligi past
RP grafit elektrodini qo'llash
(1) Elektr yoyli pechda (EAF) va cho'chqa pechida (LF) po'lat ishlab chiqarish uchun
RP Grafit elektrodi asosan po'lat ishlab chiqarish uchun LF / EAFda qo'llaniladi.Grafit elektrod LFda ishlayotganda, oqim grafit elektrod tomonidan o'choqqa kiritiladi va elektrod uchi va eritish uchun o'choq zaryadi o'rtasida elektr yoyi tomonidan hosil bo'ladigan issiqlik manbai bo'ladi.
(2) Suv ostidagi kamon pechida metall kremniy va sariq fosfor ishlab chiqarish uchun
Katta o'lchamli (masalan, 700 mm-1400 mm) ba'zi uglerod elektrodlari suv ostidagi kamon pechida metall kremniy va sariq fosfor ishlab chiqarish uchun ishlatiladi.Uglerod elektrodining pastki qismi zaryadga ko'milgan, zaryad qatlamida yoy hosil qiladi, material zaryadning qarshiligi natijasida hosil bo'lgan issiqlik energiyasi bilan eritiladi.Masalan, 1 tonna metall kremniy uchun taxminan 100 kg grafit elektrod sarflanadi.
(3) Elektr pechida korund ishlab chiqarish uchun
(4) Maxsus shakldagi grafit mahsulotlarini qayta ishlash uchun ishlatiladi
Grafit elektrodining blankasi turli xil maxsus shakldagi grafit mahsulotlarini qayta ishlash uchun ham ishlatiladi
Grafit elektrodlarini ishlab chiqarish jarayonlari
HP grafit elektrodining kimyoviy va fizik indekslari
| Element | Birlik | RP | |
| ph75-ph800mm | |||
| Qarshilik | Elektrod | mkm | 7,0-10,0 |
| Nipel | 4,0-4,5 | ||
| Yorilish moduli | Elektrod | Mpa | 8,0-10,0 |
| Nipel | 19,0-22,0 | ||
| Young moduli | Elektrod | Gpa | 7,0-9,3 |
| Nipel | 12,0-14,0 | ||
| Ommaviy zichlik | Elektrod | g/sm3 | 1,53-1,56 |
| Nipel | 1,70-1,74 | ||
| CTE (100-600 ℃) | Elektrod | 10-6/℃ | 2.2-2.6 |
| Nipel | 2,0-2,5 | ||
| Ash | % | 0,5 | |
Grafit elektrodning oqim o'tkazish qobiliyati
| Element | Nominal diametri mm | Oqim o'tkazish quvvati A | Joriy zichlik A/sm2 |
| RP grafit elektrodi | 200 | 5000-6900 | 15-21 |
| 250 | 7000-10000 | 14-20 | |
| 300 | 10000-13000 | 14-18 | |
| 350 | 13500-18000 | 14-18 | |
| 400 | 18000-23500 | 14-18 | |
| 450 | 22000-27000 | 13-17 | |
| 500 | 25000-32000 | 13-16 | |
| 550 | 30 000-42000 | 13-16 | |
| 600 | 40 000-53000 | 13-16 |
4TPI nipel va rozetkaning o'lchamlari
| Nominal diametri | Nipel turi | Nipel o'lchamlari (mm) | Soket o'lchamlari | Ip | |||||
| mm | dyuym | D | L | d2 | l
| d1 | H | mm | |
| Og'ish (-0,5-0) | Og'ish (-1-0) | Og'ish (-5-0) | Og'ish (0-0,5) | Og'ish (0-7) | |||||
| 200 | 8'' | 122T4N | 122.24 | 177,80 | 80 | ＜7 | 115,92 | 94,90 | 6.35 |
| 250 | 10'' | 152T4N | 152.40 | 190.50 | 108.00 | 146.08 | 101.30 | ||
| 300 | 12'' | 177T4N | 177,80 | 215,90 | 129.20 | 171.48 | 114.00 | ||
| 350 | 14'' | 203T4N | 203.20 | 254.00 | 148.20 | 196.88 | 133.00 | ||
| 400 | 16'' | 222T4N | 222.25 | 304.80 | 158,80 | 215,93 | 158.40 | ||
| 400 | 16'' | 222T4L | 222.25 | 355,60 | 150.00 | 215,93 | 183.80 | ||
| 450 | 18'' | 241T4N | 241.30 | 304.80 | 177,90 | 234.98 | 158.40 | ||
| 450 | 18'' | 241T4L | 241.30 | 355,60 | 169.42 | 234.98 | 183.80 | ||
| 500 | 20'' | 269T4N | 269,88 | 355,60 | 198.00 | 263.56 | 183.80 | ||
| 500 | 20'' | 269T4L | 269,88 | 457.20 | 181.08 | 263.56 | 234.60 | ||
| 550 | 22'' | 298T4N | 298.45 | 355,60 | 226.58 | 292.13 | 183.80 | ||
| 550 | 22'' | 298T4L | 298.45 | 457.20 | 209.65 | 292.13 | 234.60 | ||
| 600 | 24'' | 317T4N | 317.5 | 355,60 | 245.63 | 311.18 | 183.80 | ||
| 600 | 24'' | 317T4L | 317.5 | 457.20 | 228,70 | 311.18 | 234.60 | ||
| 650 | 26'' | 355T4N | 355,60 | 457.20 | 266,79 | 349.28 | 234.60 | ||
| 650 | 26'' | 355T4L | 355,60 | 558,80 | 249,86 | 349.28 | 285.40 | ||
| 700 | 28'' | 374T4N | 374,65 | 457.20 | 285,84 | 368.33 | 234.60 | ||
| 700 | 28'' | 374T4L | 374,65 | 558,80 | 268,91 | 368.33 | 285.40 | ||
| 750 | 30'' | 406T4N | 406.4 | 584.20 | 296.42 | 400.08 | 298.10 | ||
| 750 | 30'' | 406T4L | 406.4 | 609,60 | 292.19 | 400.08 | 310.80 | ||
| 800 | 32'' | 431T4N | 431,8 | 635.00 | 313.36 | 425.48 | 325,50 | ||
| 800 | 32'' | 431T4L | 431,8 | 685,80 | 304.89 | 425.48 | 348,90 | ||
3TPI nipel va rozetkaning o'lchamlari
| Nominal diametri | Nipel turi | Nipel o'lchamlari (mm) | Soket o'lchamlari | Ip | |||||
| mm | dyuym | D | L | d2 | l
| d1 | H | mm | |
| Og'ish (-0,5-0) | Og'ish (-1-0) | Og'ish (-5-0) | Og'ish (0-0,5) | Og'ish (0-7) | |||||
| 250 | 10'' | 155T3N | 155,57 | 220.00 | 103.80 | ＜7 | 147.14 | 116.00 | 6.35 |
| 300 | 12'' | 177T3N | 177.16 | 270,90 | 116,90 | 168,73 | 141.50 | ||
| 350 | 14'' | 215T3N | 215,90 | 304.80 | 150.00 | 207.47 | 158.40 | ||
| 400 | 16'' | 215T3L | 215,90 | 304.80 | 150.00 | 207.47 | 158.40 | ||
| 400 | 16'' | 241T3N | 241.30 | 338,70 | 169,80 | 232.87 | 175.30 | ||
| 450 | 18'' | 241T3L | 241.30 | 338,70 | 169,80 | 232.87 | 175.30 | ||
| 450 | 18'' | 273T3N | 273.05 | 355,60 | 198,70 | 264.62 | 183.80 | ||
| 500 | 20'' | 273T3L | 273.05 | 355,60 | 198,70 | 264.62 | 183.80 | ||
| 500 | 20'' | 298T3N | 298.45 | 372,60 | 221.30 | 290.02 | 192.20 | ||
| 550 | 22'' | 298T3N | 298.45 | 372,60 | 221.30 | 290.02 | 192.20 | ||
3TPI mavzu tafsilotlari
4TPI mavzu tafsilotlari
Momentga havola
| Diametri | mm | 250 | 300 | 350 | 400 | 450 | 500 | 550 | 600 | 650 | 700 |
| dyuym | 10'' | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | |
| Moment (Nm) | 400-450 | 500-650 | 700-950 | 850-1150 | 1050-1400 | 1300-1700 | 1850-2400 | 2300-3000 | 3900-4300 | 4400-5200 | |
