Ukubuka Konke Komkhiqizo - Inselele Ye-EAF Slag Pot
An Imbiza ye-slag ye-EAF(nomailadle ye-slag yesithando sikagesi se-arc) akuyona nje inguqulo encane yebhodwe lokuguqula i-BOF. Isebenza ngaphansi kwesethi ehluke ngokuphelele yezingcindezi ezenza kube ngenye yezindlela ezifunwa kakhulu zokugaya insimbi.
Izitofu zikagesi ze-arc zikhiqiza i-slag ngamaqoqo njaloImizuzu engama-45–90– ngokuvamile ukushisa okungu-12 kuya ku-20 ngosuku. Umjikelezo ngamunye uhilela:
1. Ukugcwalisange-slag encibilikisiwe ku-1,600–1,700°C (kufaka phakathi amaconsi ensimbi)
2. Ukubambakuyilapho imbiza ithuthwa phansi okungalingani
3. Ukulahla inkunkumangokuthambekela kwekhreyini, ngezinye izikhathi kube nokushayisana nomphetho womgodi we-slag
4. Ukupholisa umoyangaphansi kuka-300°C ngaphambi kokugcwaliswa okulandelayo - okudala ukuqina okukhuluukushaqeka kokushisa
5. Ngokungafani nezimbiza ze-BOF slag ezivame ukuthola i-slag eyodwa ngeshifti ngayinye, izimbiza ze-EAF zingafakwaukushisa okusheshayo nokupholisa kufika ezikhathini ezingama-20 ngosukuLokhu kujikeleza kokushisa okuvama kakhulu kuholela kuukucasuka kokukhathala okushisayo– imodi yokuhluleka engu-#1 yamabhodwe e-slag e-EAF.
Ngaphezu kwalokho, i-EAF slag chemistry iyahlukahluka kakhulu kuye ngekhwalithi yezingcezu, ukungezwa kwe-alloy, kanye nomkhuba wokucwenga. I-Slag ingaba ** eyisisekelo kakhulu** (i-CaO ephezulu, inamathela) nomai-asidi(i-SiO₂ ephezulu, uketshezi). Ngayinye idinga iphrofayili yangaphakathi ehlukile kanye nempendulo yezinto ezibonakalayo.
I-Womic Steel isunguleIzimbiza ze-slag ezilungiselelwe i-EAFezibhekana namaphuzu amathathu akhethekile obuhlungu:
●Ukukhathala okushisayo– ixazululwe ngensimbi ecolekile + ukwelashwa kokushisa okulawulwayo kokupholisa
●Ukuqandisa i-slag– ixazululwe nge-contour yangaphakathi enezingqimba ezimbili enelungelo lobunikazi kanye ne-anti-stick coating
●Umonakalo wemishini lapho kulahlwa khona imfucuza– ixazululwe ngomphetho oqinisiwe kanye nesimo esimunca umthelela
Kungani Ukhetha Insimbi Yomhlobiso We-EAF Slag Pot Yakho?
| Isici | Inzuzo Ekhethekile ye-EAF |
| Insimbi Ehlanganisiwe Ye-Nb-V | Inani elincane lemingcele ye-niobium kanye ne-vanadium pin grain, okubambezela ukuqala kokuqhekeka kokukhathala kokushisa. Kufakazelwe ukuthi kwandisa imijikelezo iye ekuhlulekeni ngo-70% uma kuqhathaniswa nensimbi ejwayelekile. |
| Ukucima Okusheshisiwe + Okuthambile | Ngemva kokwenza umoya ube yi-austeniti, umoya ophoqelelwe (hhayi umoya oqinile) udala isakhiwo se-pearlite + bainite esincanyana - ukumelana okuphezulu kakhulu nokushaqeka kokushisa. |
| Isitsha Sangaphakathi Esinezingqimba Ezimbili | Umthambeka ongaphezulu ngu-12°, umthambeka ophansi ngu-8°, nendawo eyisicaba eqondile engu-150mm endaweni yokushaya. Isikhathi sokukhishwa kwe-slag sincishiswe ngo-40% ekuhlolweni kwensimu. |
| ** Isimbozo Se-Ceramic Esinganamatheli (Sangaphakathi)** | Isembozo se-alumina-silicate esinezingxenye ezimbili esinobukhulu obungu-3mm, simelana nokunamathela kwe-slag okuyisisekelo. Isikhathi sokuphinda sifake sidlula izinyanga ezingu-12. |
| Inketho Yokugoba Okuhlanganisiwe | Kumabhodwe angaphezu kwamathani angu-50, singahlinzeka ngama-trunnion ahlanganisiwe nahlanganisiwe ngokwahlukene (avalwe ngomshini + ama-weld angena ngokugcwele) ukuze aphile isikhathi eside sokukhathala. |
| I-FEA Eguquguqukayo Enokulayisha Ukuhlola Ukushisa | Silingisa imijikelezo eyi-1,000 ka-800°C ΔT (ukushisa okungu-300°C→1,600°C, ukupholisa okungu-1,600°C→300°C) ukuqinisekisa ukuthi akukho ukuqala kokuqhekeka. Kufakiwe umbiko. |
| Umklamo Wokwanda Okuphansi Kokushisa | Ukwehluka kobukhulu bodonga okulungiselelwe kunciphisa ukucindezeleka kokushisa endaweni engaphezulu yomphetho - indawo evame kakhulu yokuqhekeka. |
| I-EAF Yenza Isixhumanisi Esiqondile | Senza ngokwezifiso umugqa ongaphezulu womphetho webhodwe ukuze uvumelane nokuvulwa komnyango we-slag wesithando sakho kanye nokwakheka komlomo wokuthinta – akukho ukuchaphaza noma ukuchitheka. |
Siphinde sinikezeuhlelo lokuhlola i-slag pot shuttle– siqeqesha abasebenzi bakho ukuthi benze i-UT yangaphakathi, futhi sishintsha ama-pot ngomjikelezo ohleliwe, sinciphisa isikhathi sokuphumula esingahleliwe.
Imininingwane Yobuchwepheshe - Imbiza Ye-Slag Elungiselelwe i-EAF
Ububanzi Bomthamo Obunconyiwe Bosayizi Abavamile Be-EAF
| Amandla Okuqokwa e-EAF (amathani) | Umthamo we-Slag ngokushisa (amathani) | Umthamo Wembiza Onconywayo (amathani) | Isisindo sembiza (amathani) | Imijikelezo Yansuku Zonke (ejwayelekile) |
| 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 |
Umthamo wembiza kufanele ube yi-1.2–1.5 × umthamo we-slag ukuze kuvunyelwe i-slag ephefumulayo ngaphandle kokuchichima.
Amabanga Ezinto Eziqondile ze-EAF
| Ibanga | Isakhiwo esincane | Ukumelana Nokukhathala Okushisayo | Kuhle kakhulu |
| I-ZG270-500 Ishintshiwe (Nb 0.03%, V 0.05%) | I-ferrite/i-pearlite enezinhlamvu ezincane | +++ | I-EAF Ejwayelekile, engabizi kakhulu |
| I-GS-20Mn5 (1.1120) | I-martensite ethambile + i-bainite | ++++ | I-EAF enamandla aphezulu enemijikelezo eminingi/ngosuku |
| I-ASTM A27 65-35 Mod (ne-Cu+Ni) | I-martensite ecinyiwe futhi ethambile | ++++ | Insimbi engagqwali i-EAF (i-slag ebolile) |
| 1.6220 (16MnCr5) | Ikesi elifakwe i-carburised + i-core eqinile | +++++ | Isevisi esezingeni eliphezulu kakhulu > amabhayisikili angu-20 ngosuku |
Isincomo Sethu:Eziningi zezicelo ze-EAF,I-GS-20Mn5 + ivaliwe futhi iqinisiweinikeza ibhalansi engcono kakhulu yezindleko, ukumelana nokukhathala kokushisa, kanye nokulungiswa kalula.
Izici Ezikhethekile Zobukhulu be-EAF
| Isici | Isidingo se-EAF | Umklamo Wensimbi WaseWomic |
| Ukuphakama Komphetho Ongaphezulu | Kumelwe kube phansi ngokwanele ukuze kungene ngaphansi komnyango we-slag kodwa kuphakame ngokwanele ukuze kuvinjelwe ukuchitheka kwamanzi | Uhlangothi olungaphambili olunwetshiwe (oluhlangothini lokuthepha) luphakeme ngo-100mm kunohlangothi olungemuva |
| I-Trunnion Tilt Angle | Ukuthambekela okungu-45° ukuze kukhishwe ngokuphelele | I-axis ye-trunnion ebekwe eceleni engu-50mm ibheke ekuthululeni izindebe – ukuzikhipha amanzi |
| Isimo Esingezansi | I-Conical ye-slag enamathelayo ye-EAF | Ikhoni ye-apex engu-120° ene-radius engu-50mm esicongweni - isusa isithende esinodaka |
| Ama-Lug Okuphakamisa | Izindawo zokuphakamisa ezengeziwe zokulungisa | Ama-lug amane ahlanganisiwe ezindwangwini zezintambo |
| Imbobo Yokukhipha Amanzi (ongakukhetha) | Ukuze kuthululwe i-slag esele ngaphambi kokuqina okugcwele | Ububanzi obungu-50mm obunepulaki enentambo, etholakala endaweni ephansi kakhulu |
Idatha Yokuhlola Ukukhathala Okushisayo (Eyenziwe)
| Ipharamitha | Inani |
| Izinga lokuhlola | Ingaphakathi le-Womic (ngokusekelwe ku-ASTM E606) |
| I-ΔT ngomjikelezo ngamunye | 1,300°C (300°C → 1,600°C → 300°C) |
| Bamba isikhathi ekushiseni okuphezulu | imizuzu eyi-10 |
| Indlela yokupholisa | Umoya ophoqelelwe (ulingisa izimo zangempela zaphansi) |
| Ijikeleza ibe yi-1mm crack (insimbi ejwayelekile ehlanganisiwe) | ~imijikelezo engu-1,500 |
| Imijikelezo eya ekuqhekekeni okungu-1mm (ibanga le-Womic EAF) | ~imijikelezo engu-3,200 |
| Ukuthuthukiswa | +113% |
Ukulawulwa Kwekhwalithi Yebhodwe Le-Slag le-EAF - Ukuqinisekiswa Kokujikeleza Kwe-Thermal
Ngale kwe-NDT ejwayelekile, senza umsebenziukuhlolwa komjikelezo wokushisa obhubhisayokumasampula esihloko sokuqala. Ikhuphoni elincane lokuhlola (ukwelashwa kokushisa okufanayo) lifakwa emijikelezweni yokushisa esheshayo esithandweni sethu selebhu. Imifantu ilinganiswa ngopende ofaka udayi njalo ngemijikelezo engu-500. Ukuhlolwa kuyaqedwa lapho ubude bomfantu budlula u-3mm. Inani lemijikelezo elifinyelelwe liyaqoshwa futhi liqinisekisiwe ukuthi lihlangabezana nesidingo sakho esincane (ngokuvamile imijikelezo engu-2,500).
Ukuhlolwa okwengeziwe kwe-EAF:
Imephu ye-ultrasonic yobukhulu bodonga– sikhiqiza imephu yobukhulu obunemibala yembiza yonke, sigqamisa noma yiziphi izindawo ezingaphansi kwezinga.
Ukuhlolwa kwerediyasi yezimpande ze-trunnion– sisebenzisa igeyiji ye-contour eyenziwe ngokwezifiso, siqinisekisa i-radius = 50mm min.
Ukuqondile komphetho– ngemva kokwelashwa ngokushisa, silinganisa ukuqina komngcele; ukuphambuka okungu-≤5mm kuqinisekisa ukulingana okufanele nomnyango we-slag.
Inqubo Yokukhiqiza – Ukuphonswa Kwemijikelezo Yomsebenzi we-EAF
1. Ubunjiniyela Obungokwezifiso– Sihlaziya i-EAF yakho: ukwakheka, indlela yokuthepha, ukuba yisisekelo kwe-slag, imijikelezo ngosuku, umthamo we-crane, kanye nokuhlelwa kwephansi.
2. Ukulingisa Umjikelezo Wokushisa we-FEA– Imijikelezo eyi-1,000 ebonakalayo ikhomba izindawo ezishisayo; sifaka izimbambo noma sishintsha ukujiya ngokufanele.
3. Iphethini enephrofayili ye-EAF– Kubandakanya ungqimba olungaphambili oluphakanyisiwe kanye nendawo yokugoba engalingani.
4. Insimbi Ehlanzekile Kakhulu– EAF + LF + VD + ukuthululwa kwegesi okungenayo igesi. Ithagethi S<0.012%, P<0.015%, H<2ppm.
5. Ukulingisa Okukodwa– Ibhodwe elihlanganisiwe + ama-trunnion (noma ama-trunnion ahlukene ahlanganisiwe angamathani angaphezu kwama-50).
6. Ukuqina Okulawulwayo– Ukusebenzisa izikhulisi ze-exothermic kuphela ezindaweni ezijiyile; kubanda eduze kweziphambano ze-trunnion ukuze kugwenywe ukushwabana.
7. Ukwelashwa Kokushisa– Kucinyiwe (umoya ophoqelelwe) + Kuthambile → isakhiwo esihle se-bainitic.
8. I-UT yokuqala kanye ne-MT– Yenqaba noma yiliphi ibhodwe elinezinkinga eziqondile >2mm.
9. Isitsha Sangaphakathi Somshini– Ukushintshwa kwe-CNC kwe-contour ye-slope ephindwe kabili.
10.Faka i-Anti-Stick Coating– Izendlalelo ezimbili ze-ceramic, i-DFT engu-2.5–3.0mm iyonke, ziqiniswe ku-350°C.
11.I-NDT Yokugcina (i-Phased Array UT)– Gxila ezindaweni zokuguquka.
12.Ukuhlolwa Komthwalo (ongakukhetha)– Ngofakazi, kusetshenziswa iseli lomthwalo elilinganisiwe kumthamo olinganiselwe ongu-1.25×.
Ukupakishwa Nokuthunyelwa Kwezimbiza Ze-EAF Slag
Izimbiza ze-EAF zivame ukuba zincane kunezimbiza ze-BOF kodwa zilethwa ngobuningi obukhulu. Sinikeza:
●Idizayini eqiniswayo– ngezihlukanisi zokhuni, kungafakwa amabhodwe afinyelela kwangu-3 esitsheni esisodwa esingamamitha angu-40 (konge izindleko zokuthutha).
●Izinto zokuvala insimbi ezenziwe ngokwezifiso– ukuthunyelwa kwamabhodwe amaningi, angasetshenziswa kabusha.
●Isikhathi sokuhola isihloko sokuqala– amasonto ayi-16 (kufaka phakathi iphethini kanye nokuhlolwa kokuqinisekisa).
●Isikhathi sokuhola sokukhiqiza ngeqembu– Amaviki angu-8-10 ukuze uthole amayunithi engeziwe.
Izifundo Zezimo Ezigxile Ku-EAF
Icala 1: 80t EAF, i-Mexican Mini-Mill – Ukuqeda Ukukhathala Okushisayo
Inkinga:Izimbiza zangaphambilini zahlala izinyanga ezingu-9 (cishe imijikelezo engu-4,500) zabe seziba nemifantu emisebeni yomphetho.
Isixazululo:I-Womic inikeze amabhodwe e-GS-20Mn5 anesakhiwo esicinyiwe nesithambile, iphrofayili yangaphakathi egobile kabili, kanye nesembozo esinganamatheli.
Umphumela:Ngemva kwezinyanga ezingu-14 (imijikelezo engu-7,200), akukho mifantu ebonakalayo. I-oda lesibili lamabhodwe angu-12 abekwe.
Ikesi 2: 150t DC EAF, Isigayo Esingenasici saseNingizimu Korea – I-Slag Egqwala Kakhulu
Inkinga:I-slag ephezulu ye-Cr2O3 yadla ezitsheni ezivamile ezinyangeni eziyi-6.
Isixazululo:I-ASTM A27 65-35 eyenziwe ngokwezifiso ene-Cu (0.5%) kanye ne-Ni (1.0%) eyengeziwe, kanye nesembozo se-ceramic ebusweni bonke bangaphakathi.
Umphumela:Isikhathi senkonzo sinwetshwe saze safika ezinyangeni ezingu-18 – 3x ngaphambili. Izimbiza ezimboziwe nazo zinciphise isikhathi sokuqandisa i-slag ngo-50%.
Icala 3: 60t EAF, i-Indian Foundry – Ukuthepha Okuvamile (ukushisa okungu-20+ ngosuku)
Inkinga:Izimbiza zaqhekeka zingakapheli izinyanga ezintathu ngenxa yokunganeli isikhathi sokupholisa phakathi kwemijikelezo.
Isixazululo:Imbiza eklanywe kabusha enezingxenye zodonga ezincane (40mm vs 60mm) kanye nezimbambo zokupholisa zangaphandle ukuze kusheshiswe ukushabalaliswa kokushisa. Kuphinde kwenezelwa nezincomo zesiteshi sokupholisa umoya ophoqelelwe.
Umphumela:Ukuqhekeka kwehlehliswa kwaba yizinyanga eziyi-10. Isisindo esiphansi sebhodwe sinciphise nokuguguleka kwekhreyini.
Izicelo – Lapho Izimbiza Ze-EAF Zibaluleke Kakhulu
●Izitolo ze-EAF zensimbi yekhabhoni(imikhiqizo emide, amafulethi)
●Ukuncibilika kwensimbi engagqwali kwe-EAF(i-slag ebolile kakhulu)
●Izitofu ze-arc zensimbi ye-alloy kanye nensimbi yamathuluzi
●Izitofu ze-arc ze-Foundry(ukuphonswa kwensimbi nensimbi)
●Ukwenza insimbi esekwe ku-sponge iron / DRI(i-slag ephezulu ye-FeO2)
●Izitshalo zokuvuselela uthuli ze-EAF(ukutholakala kwe-zinc othulini lwe-EAF)
Imibuzo Evame Ukubuzwa (Imibuzo Evame Ukubuzwa) – EAF Specific
U: Ngingazi kanjani ukuthi i-EAF yami idinga imbiza ekhethekile ye-slag?
A: Uma usebenzisa ama-heat angaphezu kwe-10 ngosuku noma uhlangabezana nokuqhekeka zingakapheli izinyanga eziyi-12 ezitsheni ezijwayelekile, udinga umklamo olungiselelwe i-EAF. Futhi, uma ubona i-slag inamathela kakhulu noma idinga ukuphuka ngesandla, iphrofayili yethu yokulwa nokunamathela izokusiza.
U: Ngingayisebenzisa yini imbiza efanayo ye-slag ye-BOF ne-EAF?
A: Akukhuthazwa – Izimbiza ze-EAF zenzelwe ukujikeleza okusheshayo, izindonga ezincane, kanye nezakhiwo ezahlukene zokunamathela kwe-slag. Ukusebenzisa izimbiza ze-BOF ku-EAF kuholela ekuqhekekeni kwangaphambi kwesikhathi; ukusebenzisa izimbiza ze-EAF ku-BOF kungazishisa kakhulu. Sebenzisa njalo izimbiza ezinikezelwe.
U: Ingabe ninikeza izinhlelo zokuxhasa ngezimali noma zokushintshana ngemali?
A: Yebo – sinebhodwe le-slag njengemodeli yesevisi: ukhokha ngethani lensimbi ekhiqizwe, futhi sinazo futhi sizinakekela izimbiza. Isibopho esingaphansi kweminyaka emi-5. Cela imininingwane.
Q: Iyini isikhathi esijwayelekile sokuphila sokumboza okunamathelayo?
A: Ngaphansi kwemisebenzi evamile ye-EAF (i-slag eyisisekelo, imijikelezo engu-15 ngosuku), ukugqoka kuthatha izinyanga ezingu-9-12. Ukugqoka kabusha kungenziwa esitshalweni sakho ngochwepheshe bethu (noma sihlinzeka ngekhithi yokugqoka). Izindleko zokufaka ulwelwesi zingama-~15% entengo entsha yebhodwe.
U: Ubhekana kanjani nokushintsha okuphuthumayo uma imbiza ihluleka ngokuzumayo?
A: Sigcina isitokwe esincane se-buffer (izimbiza ezingu-2-4) zobukhulu obufanayo be-EAF endaweni yethu yokugcina impahla. Kumakhasimende anenkontileka yesevisi, sithutha ngendiza zingakapheli amahora angu-72.
U: Ungakwazi yini ukwengeza izinzwa zokushisa ebhodweni?
A: Yebo – singafaka ama-thermocouple pockets (kufika ezindaweni ezi-4) nge-Inconel sheathing. Ama-sensor angaxhunywa kwi-monitor ephathekayo noma ahlanganiswe ne-DCS yesitshalo sakho.
U: Iyini imfuneko yokuqedwa kobuso ukuze kunamathele i-EAF slag?
A: Isitsha sangaphakathi kumele sifakwe umshini ku-Ra ≤ 6.3 μm. Izindawo ezibunjiwe zikhuthaza ukunamathela. Umklamo wethu ogobile ohlangene nomshini wokusika omncane unciphisa ukunamathela kakhulu.
U: Ngingawuhlanza kanjani imbiza ye-slag uma i-slag iqina ngaphakathi?
A: Ungalokothi usebenzise ukushawa ngomshini ngqo odongeni lwebhodwe – okubangela imifantu. Esikhundleni salokho, sebenzisa ukushawa nge-oxygen ukuze usike umsele, bese ufudumeza ibhodwe ngokulinganayo. Ukwemboza kwethu okulwa nokunamathela kunciphisa izehlakalo zokuqandisa.
Ukulungele Ukuthuthukisa Ukuphathwa Kwakho Kwe-EAF Slag?
Xhumana ne-Womic Steel ukuthola ulwazi oluthe xaxaukuhlolwa kokukhathala kokushisa kwamahhalayemigqomo yakho yamanje ye-slag - sizoncoma izinguquko zomklamo futhi sibikezele isikhathi sokuphila kwenkonzo esingaba khona.
Iwebhusayithi: www.womicsteel.com
I-imeyili: sales@womicsteel.com | eaf@womicsteel.com
Ucingo/I-WhatsApp/I-WeChat:
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