Chidule cha Zamalonda - Vuto la EAF Slag Pot
An Mphika wa slag wa EAF(kapenachidebe cha ng'anjo yamagetsi ya arc) si mtundu wocheperako wa mphika wosinthira wa BOF. Umagwira ntchito pansi pa zinthu zosiyana kwambiri zomwe zimapangitsa kuti ukhale umodzi mwa makina ovuta kwambiri opangira zitsulo.
Zitsulo zamagetsi za arc zimapanga slag m'magulu osiyanasiyanaMphindi 45–90– nthawi zambiri kutentha 12 mpaka 20 patsiku. Kuzungulira kulikonse kumaphatikizapo:
1. Kudzazandi slag yosungunuka pa 1,600–1,700°C (kuphatikiza madontho achitsulo)
2. Kugwirapamene mphika umanyamulidwa pansi mopanda kufanana
3. Kutayakudzera mu kupendekeka kwa crane, nthawi zina ndi kugundana ndi m'mphepete mwa dzenje la slag
4. Kuziziritsa mpweyakutentha kochepera 300°C musanadzazenso - zomwe zimapangitsa kuti pakhale kutentha kwambirikutentha kwakukulu
5. Mosiyana ndi miphika ya BOF slag yomwe nthawi zambiri imalandira slag imodzi pa shift iliyonse, miphika ya EAF imatha kuphikidwaKutentha ndi kuziziritsa mofulumira mpaka nthawi 20 patsikuKusinthasintha kwa kutentha kwapamwamba kumeneku kumabweretsakutopa kwa kutentha- njira yolephera #1 ya miphika ya slag ya EAF.
Kuphatikiza apo, kapangidwe ka slag ka EAF kamasiyana kwambiri kutengera mtundu wa zinyalala, zowonjezera za alloy, ndi machitidwe oyeretsera. Slag ikhoza kukhala ** yosavuta kwambiri** (CaO yambiri, yomata) kapenaasidi(high SiO₂, madzimadzi). Chilichonse chimafuna mawonekedwe amkati ndi momwe zinthu zimayankhira.
Womic Steel yapangaMiphika ya slag yokonzedwa bwino ndi EAFzomwe zimafotokoza mfundo zitatu zenizeni zopweteka:
●Kutopa kwa kutentha- yathetsedwa ndi chitsulo chosalala + chithandizo choziziritsa cholamulidwa
●Kuzizira kwa slag- Yathetsedwa ndi mawonekedwe amkati okhala ndi patent awiri komanso utoto wotsutsana ndi ndodo
●Kuwonongeka kwa makina pa kutaya zinyalala- Yathetsedwa ndi mkombero wolimbikitsidwa ndi mawonekedwe okopa kugunda
N'chifukwa Chiyani Muyenera Kusankha Chitsulo cha Womic pa Mphika Wanu wa EAF Slag?
| Mbali | Ubwino Wapadera wa EAF |
| Chitsulo Chopangidwa ndi Microalloy cha Nb-V | Kuchuluka pang'ono kwa niobium ndi vanadium pin grain, zomwe zimachedwetsa kuyambika kwa ming'alu ya kutentha. Zatsimikiziridwa kuti zimawonjezera kulephera kwa kayendedwe ka zinthu ndi 70% poyerekeza ndi chitsulo chopangidwa ndi chitsulo wamba. |
| Kuzimitsa Kofulumira + Kofatsa | Pambuyo pounikiridwa, mpweya wokakamizidwa (osati mpweya wokhazikika) umapanga kapangidwe kabwino ka pearlite + bainite - kukana kwambiri kutentha. |
| Mbale Yamkati Yotsetsereka Kawiri | Malo otsetsereka pamwamba 12°, malo otsetsereka pansi 8°, ndi malo opingasa opingasa a 150mm pamalo ogunda. Nthawi yotulutsa slag yachepetsedwa ndi 40% mu mayeso a m'munda. |
| ** Chophimba cha Ceramic Chosamatira (Chamkati)** | Chophimba cha alumina-silicate chokhala ndi magawo awiri chogwiritsidwa ntchito cha makulidwe a 3mm, chimalimbana ndi kumatira kwa slag. Nthawi yogwiritsanso ntchito imapitirira miyezi 12. |
| Njira Yopangira Trunnion | Pa miphika yolemera matani opitirira 50, titha kupereka ma trunnion opangidwa ndi osonkhanitsidwa padera (otsekedwa ndi makina + ma weld olowera mokwanira) kuti tithe kutopa kwambiri. |
| FEA Yosinthika yokhala ndi Kuyang'anira Kutentha | Timayesa ma cycle 1,000 a 800°C ΔT (kutenthetsa 300°C→1,600°C, kuziziritsa 1,600°C→300°C) kuti titsimikizire kuti palibe ming'alu yomwe yayamba. Lipotilo laphatikizidwa. |
| Kapangidwe Kowonjezera Kutentha Kochepa | Kukwera kwa makulidwe a khoma kumachepetsa kutentha m'dera lakumtunda kwa m'mphepete - malo ofala kwambiri okhala ndi ming'alu. |
| EAF Pangani Chiyankhulo Chapadera | Timakonza mawonekedwe a mphika wapamwamba kuti ugwirizane ndi kutsegula kwa chitseko cha uvuni wanu komanso momwe mpweya umagwirira ntchito - palibe kukhetsa madzi kapena kutayikira. |
Timaperekansopulogalamu yowunikira zombo zonyamula zinyalala- timaphunzitsa antchito anu kuti azichita bwino ntchito yawo ya UT, ndipo timasintha ma pot nthawi yokonzekera, kuchepetsa nthawi yopuma yomwe sinakonzedwe.
Zofunikira Zaukadaulo - Mphika Wopanda Zinyalala wa EAF Wokonzedwa
Kuchuluka kwa Mphamvu Yoyenera ya Masayizi Ofanana a EAF
| Mphamvu Yodziwika ya EAF (matani) | Kuchuluka kwa Slag pa Kutentha (matani) | Kuchuluka Koyenera kwa Mphika (matani) | Kulemera kwa mphika (matani) | Kuzungulira kwa Tsiku ndi Tsiku (kwachizolowezi) |
| 60 | 12–18 | 15–20 | 12–18 | 15–20 |
| 80 | 16–24 | 20–30 | 18–26 | 15–20 |
| 100 | 20–30 | 30–40 | 26–36 | 12–18 |
| 120 | 25–35 | 40–50 | 36–46 | 12–15 |
| 150 | 30–45 | 50–65 | 46–60 | 10–15 |
| 180 | 40–55 | 65–80 | 60–75 | 8–12 |
Kuchuluka kwa mphika kuyenera kukhala 1.2–1.5 × kuchuluka kwa slag kuti thovu lituluke popanda kudzaza.
Magiredi a Zinthu Zapadera za EAF
| Giredi | Kapangidwe kakang'ono | Kukana Kutopa kwa Kutentha | Zabwino kwambiri pa |
| ZG270-500 Yasinthidwa (Nb 0.03%, V 0.05%) | Ferrite/pearlite yopyapyala bwino | +++ | EAF Yonse, yotsika mtengo |
| GS-20Mn5 (1.1120) | Martensite yofewa + bainite | ++++ | Mphamvu ya EAF yokhala ndi ma cycle ambiri/tsiku |
| ASTM A27 65-35 Mod (ndi Cu+Ni) | Martensite yozimitsidwa komanso yofewa | ++++ | Chitsulo chosapanga dzimbiri EAF (chinyezi chowononga) |
| 1.6220 (16MnCr5) | Chikwama chotenthetsera ndi mafuta + pakati pamphamvu | +++++ | Ntchito yochuluka kwambiri > ma cycle 20 patsiku |
Malangizo Athu:Pa ntchito zambiri za EAF,GS-20Mn5 + yozimitsidwa ndi kutenthedwaimapereka ndalama zokwanira, kukana kutopa ndi kutentha, komanso kukonzedwa bwino.
Makhalidwe Ofanana ndi EAF
| Mbali | Zofunikira za EAF | Kapangidwe ka Chitsulo cha Womic |
| Kutalika kwa Mphepete Yapamwamba | Iyenera kukhala yotsika mokwanira kuti ikwane pansi pa chitseko cha zinyalala koma yayitali mokwanira kuti isalowe pansi pa chitsekocho | Mzere wakutsogolo wotambasulidwa (mbali yogogoda) 100mm wokwera kuposa mzere wakumbuyo |
| Trunnion Tilt Ngodya | Kupendekeka kwa 45° kuti muchotse madzi onse | Trunnion axis yozungulira 50mm kulowera ku milomo yothira - yodzichotsera yokha |
| Mawonekedwe a Pansi | Chozungulira cha EAF slag chomata | Chitsulo chapamwamba cha 120° chokhala ndi utali wa 50mm kumapeto - chimachotsa chidendene chopanda ntchito |
| Kukweza Ma Lugs | Malo ena onyamulira zinthu kuti akonze | Ma lugs anayi ofunikira a zingwe zomangira |
| Dzenje Lotulutsira Madzi (ngati mukufuna) | Kuchotsa madzi otsala musanayambe kuuma kwathunthu | 50mm m'mimba mwake yokhala ndi pulagi yolumikizidwa, yomwe ili pamalo otsika kwambiri |
Deta Yoyesera Kutopa ndi Kutentha (Yoyeserera)
| Chizindikiro | Mtengo |
| Muyezo woyesera | Womic internal (yochokera pa ASTM E606) |
| ΔT pa kuzungulira kulikonse | 1,300°C (300°C → 1,600°C → 300°C) |
| Gwirani nthawi pa kutentha kwakukulu | Mphindi 10 |
| Njira yozizira | Mpweya wokakamizidwa (wotsanzira momwe pansi palili) |
| Zimayenda mpaka 1mm crack (chitsulo chopangidwa mwaluso) | ~ 1,500 ma cycle |
| Kuzungulira mpaka 1mm crack (Womic EAF-grade) | ~ 3,200 ma cycle |
| Kupititsa patsogolo | + 113% |
Kuwongolera Ubwino wa Mphika wa Slag wa EAF - Kutsimikizira Kuyenda kwa Kutentha
Kupitilira muyezo wa NDT, timachita bwinokuyesa kwa kutentha kowonongapa zitsanzo zoyamba. Chiphaso choyesera chaching'ono (chomwechonso kutentha) chimayikidwa mu ng'anjo yathu ya labu. Ming'alu imayesedwa pogwiritsa ntchito utoto wopaka utoto nthawi iliyonse 500. Kuyesako kumathetsedwa pamene kutalika kwa ming'alu kumapitirira 3mm. Chiwerengero cha ming'alu chomwe chapezeka chimalembedwa ndipo chimatsimikizika kuti chikwaniritsa zosowa zanu zochepa (nthawi zambiri 2,500 ming'alu).
Macheke ena okhudzana ndi EAF:
Mapu a ultrasonic a makulidwe a khoma- timapanga mapu okhwima a mphika wonse, osonyeza madera aliwonse omwe ali pansi pa mayina.
Kuyang'anira utali wa mizu ya Trunnion– pogwiritsa ntchito choyezera cha contour, timatsimikizira kuti radius = 50mm min.
Kuwongoka kwa mkombero– titamaliza kutentha, timayesa kusalala kwa mkombero; kupotoka ≤5mm kumatsimikizira kuti chitseko cha slag chikugwirizana bwino.
Njira Yopangira - Kuponya Ntchito za EAF
1. Uinjiniya Wapadera- Timasanthula EAF yanu: kupanga, njira yogwiritsira ntchito, kugwiritsa ntchito slag basicity, kuzungulira tsiku lililonse, mphamvu ya crane, ndi kapangidwe ka pansi.
2. Kuyerekeza kwa FEA Kutentha kwa Nthawi- Ma circuits 1,000 enieni amazindikira malo otentha; timawonjezera nthiti kapena kusintha makulidwe moyenerera.
3. Chitsanzo chokhala ndi Mbiri ya EAF- Kuphatikizapo mkombero wakutsogolo wokwezedwa ndi malo osasunthika a trunnion.
4. Chitsulo Choyera Kwambiri– EAF + LF + VD + mpweya wosalowerera womwe umathiridwa. Target S<0.012%, P<0.015%, H<2ppm.
5. Kuponya Chimodzi– Mphika wophatikizana + ma trunnions (kapena ma trunnions opangidwa osiyana a matani opitilira 50).
6. Kukhazikika Kolamulidwa- Kugwiritsa ntchito zokweza za exothermic pamalo okhuthala okha; kumazizira pafupi ndi malo olumikizirana kuti zisawole.
7. Kutentha Chithandizo– Wozimitsidwa (mpweya wokakamizidwa) + Wofewa → kapangidwe kabwino ka bainitic.
8. First UT & MT– Kanizani mphika uliwonse wokhala ndi zolakwika zolunjika >2mm.
9. Mbale Yamkati ya Makina- Kukonza kwa CNC kwa mizere iwiri yotsetsereka.
10.Ikani Chophimba Chotsutsana ndi Ndodo– Zigawo ziwiri za ceramic, zonse 2.5–3.0mm DFT, zophimbidwa pa 350°C.
11.NDT Yomaliza (Phased Array UT)- Yang'anani kwambiri pa malo osinthira.
12.Mayeso a Katundu (ngati mukufuna)– Ndi mboni, pogwiritsa ntchito selo yolemetsa yolinganizidwa pa mphamvu ya 1.25×.
Kupaka ndi Kutumiza kwa Miphika ya Zinyalala ya EAF
Miphika ya EAF nthawi zambiri imakhala yaying'ono kuposa miphika ya BOF koma imaperekedwa mochuluka. Timapereka:
●Kapangidwe kokhazikika– ndi zolekanitsa zamatabwa, miphika yokwana itatu ikhoza kuyikidwa mu chidebe chimodzi cha mamita 40 (kupulumutsa ndalama zonyamula katundu).
●Ma stillage achitsulo opangidwa mwamakonda- potumiza miphika yambirimbiri, yogwiritsidwanso ntchito.
●Nthawi yokonzekera nkhani yoyamba- Masabata 16 (kuphatikizapo mayeso a kapangidwe ndi kutsimikizira).
●Nthawi yotsogolera yopangira gulu- Masabata 8-10 a mayunitsi owonjezera.
Maphunziro a Nkhani Oyang'aniridwa ndi EAF
Nkhani 1: 80t EAF, Mini-Mill ya ku Mexico - Kuchotsa Kutopa Kwambiri
Vuto:Miphika yakale inatenga miyezi 9 (pafupifupi maulendo 4,500) kenako inapanga ming'alu ya radial m'mphepete mwake.
Yankho:Womic inapereka miphika ya GS-20Mn5 yokhala ndi mawonekedwe oziziritsidwa komanso otenthedwa, mawonekedwe amkati otsetsereka kawiri, komanso utoto woletsa kuuma.
Zotsatira:Pambuyo pa miyezi 14 (miyezi 7,200), palibe ming'alu yooneka. Oda yachiwiri ya miphika 12 yayikidwa.
Mlandu Wachiwiri: 150t DC EAF, Chopangira Zinyalala cha ku South Korea – Chopanda Zinyalala Chowononga Kwambiri
Vuto:Madzi ochulukirapo a Cr2O3 adadya m'miphika yachikhalidwe m'miyezi 6.
Yankho:ASTM A27 65-35 yopangidwa mwapadera yokhala ndi Cu (0.5%) ndi Ni (1.0%) yowonjezera, komanso chophimba cha ceramic pamwamba pa mkati wonse.
Zotsatira:Nthawi yogwira ntchito imawonjezeka mpaka miyezi 18 - 3x yapitayi. Miphika yokutidwa ndi zokutira inachepetsanso nthawi yoziziritsira matope ndi 50%.
Mlandu 3: 60t EAF, Indian Foundry – Kugunda pafupipafupi (kutentha kwa 20+ patsiku)
Vuto:Miphika inasweka mkati mwa miyezi itatu chifukwa cha nthawi yoziziritsa yosakwanira pakati pa nthawi yozungulira.
Yankho:Mphika wokonzedwanso wokhala ndi zigawo zoonda za khoma (40mm vs 60mm) komanso nthiti zoziziritsira zakunja kuti zifulumizitse kutentha. Komanso tawonjezera malangizo a siteshoni yoziziritsira mpweya mokakamiza.
Zotsatira:Kusweka kwa ming'alu kunachedwetsedwa kufika pa miyezi 10. Kulemera kochepa kwa mphika kunachepetsanso kuwonongeka ndi kung'ambika kwa crane.
Kugwiritsa Ntchito - Kumene Miphika ya Zinyalala ya EAF Ndi Yofunika Kwambiri
●Masitolo a EAF achitsulo cha kaboni(zogulitsa zazitali, ma flats)
●Chitsulo chosapanga dzimbiri cha EAF chosungunuka(matope owononga kwambiri)
●Zitsulo za alloy ndi zida zoikira zitsulo
●Zitsulo zachitsulo zoyambira(kupangira chitsulo ndi chitsulo)
●Kupanga zitsulo pogwiritsa ntchito siponji / DRI(kuchuluka kwa FeO2)
●Makampani obwezeretsanso fumbi a EAF(kuchira kwa zinc kuchokera ku fumbi la EAF)
Mafunso Ofunsidwa Kawirikawiri (FAQ) - EAF Specific
Q: Ndingadziwe bwanji ngati EAF yanga ikufunika mphika wapadera wa slag?
A: Ngati mumagwiritsa ntchito ma heat opitilira 10 patsiku kapena mukumva ming'alu mkati mwa miyezi 12 pa miphika yokhazikika, muyenera kapangidwe koyenera ka EAF. Komanso, ngati muwona kuti slag ikumamatira kwambiri kapena ikufunika kusweka ndi manja, mbiri yathu yotsutsana ndi kumamatira idzakuthandizani.
Q: Kodi ndingagwiritse ntchito mphika womwewo wa slag pa BOF ndi EAF?
A: Sikoyenera - miphika ya EAF yapangidwa kuti igwire ntchito mwachangu, makoma opyapyala, komanso zinthu zosiyanasiyana zomatira. Kugwiritsa ntchito miphika ya BOF mu EAF kumabweretsa ming'alu isanakwane; kugwiritsa ntchito miphika ya EAF mu BOF kungayambitse kutentha kwambiri. Nthawi zonse gwiritsani ntchito miphika yapadera.
Q: Kodi mumapereka ndalama kapena mapulogalamu osinthana ndalama?
A: Inde - tili ndi mphika wa slag monga chitsanzo cha ntchito: mumalipira pa tani imodzi ya chitsulo chopangidwa, ndipo tili ndi miphikayo ndikuisamalira. Kudzipereka kwa zaka 5. Funsani zambiri.
Q: Kodi nthawi yogwiritsira ntchito nthawi yophikira yotsutsana ndi ndodo ndi yotani?
A: Pansi pa ntchito zachizolowezi za EAF (zoyambira, ma cycles 15 patsiku), chophimbacho chimatenga miyezi 9-12. Kukonzanso chophimba kungachitike mufakitale yanu ndi akatswiri athu (kapena ife timapereka zida zophimba). Mtengo wosinthira nsalu ndi ~15% ya mtengo watsopano wa miphika.
Q: Kodi mungatani ngati mphika wawonongeka mwadzidzidzi?
Yankho: Timasunga kachidutswa kakang'ono ka buffer (miphika iwiri kapena inayi) ya kukula kofanana kwa EAF m'nyumba yathu yosungiramo katundu. Kwa makasitomala omwe ali ndi mgwirizano wopereka chithandizo, timanyamula katundu wa ndege mkati mwa maola 72.
Q: Kodi mungathe kuwonjezera zoyezera kutentha mumphika?
Yankho: Inde - titha kuyika matumba a thermocouple (mpaka malo 4) ndi Inconel sheathing. Masensa amatha kulumikizidwa ku chowunikira chonyamulika kapena kuphatikizidwa ndi DCS yanu.
Q: Kodi chofunika ndi chiyani kuti pakhale kulimba kwa EAF slag?
A: Mbale yamkati iyenera kupangidwa ndi makina okwana Ra ≤ 6.3 μm. Malo opangidwa ndi chitsulo chosungunuka amalimbikitsa kumatirira. Kapangidwe kathu kokhala ndi mipiringidzo iwiri pamodzi ndi makina opangidwa bwino kamachepetsa kumatirira kwambiri.
Q: Kodi ndingatsuke bwanji mphika wa slag ngati slag yazizira mkati?
Yankho: Musagwiritse ntchito makina odulira mwachindunji pakhoma la mphika - zomwe zimayambitsa ming'alu. M'malo mwake, gwiritsani ntchito mpweya wodulira kuti mudule njira, kenako tenthetsani mphika mofanana. Chophimba chathu choletsa kuuma chimachepetsa zochitika zozizira.
Kodi mwakonzeka kukonza momwe mungagwirire ntchito ndi EAF Slag?
Lumikizanani ndi Womic Steel kuti mudziwe zambirikuwunika kwa kutopa kwa kutentha kwaulereza miphika yanu ya slag yomwe ilipo pano - tikupangira kusintha kapangidwe kake ndi kuneneratu nthawi yomwe ntchitoyo ingakulire.
Webusaiti: www.womicsteel.com
Imelo: sales@womicsteel.com | eaf@womicsteel.com
Foni/WhatsApp/WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Chitsulo cha Womic - Chopangidwa kuti chigwirizane ndi kayendedwe kamphamvu ka chitsulo chamagetsi cha arc furnace.
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