Zomwe zimafunikira pazida zodzitchinjiriza pama ng'anjo amagetsi amagetsi ndi:
(1) Kukana kuyenera kukhala kwakukulu.Kutentha kwa arc kumaposa 4000 ° C, ndipo kutentha kwazitsulo ndi 1500 ~ 1750 ° C, nthawi zina kufika pa 2000 ° C, kotero kuti zipangizo zokanira zimafunika kuti zikhale ndi kukana kwakukulu.
(2) Kutentha kofewa pansi pa katundu kuyenera kukhala kwakukulu.Ng'anjo yamagetsi imagwira ntchito pansi pa kutentha kwakukulu, ndipo thupi la ng'anjo liyenera kupirira kukokoloka kwa chitsulo chosungunuka, kotero kuti zinthu zowonongeka zimafunika kuti zikhale ndi kutentha kwakukulu kofewetsa.
(3) Mphamvu yopondereza iyenera kukhala yayikulu.Kuyika kwa ng'anjo yamagetsi yamagetsi kumakhudzidwa ndi mphamvu ya chaji polipira, kukakamiza kwachitsulo chosungunula panthawi yosungunula, kukokoloka kwa chitsulo pakugunda, komanso kugwedezeka kwamakina pakagwira ntchito.Choncho, zinthu refractory chofunika kukhala mkulu compressive mphamvu.
(4) The matenthedwe madutsidwe ayenera kukhala ochepa.Pofuna kuchepetsa kutentha kwa ng'anjo yamagetsi ndi kuchepetsa mphamvu yogwiritsira ntchito mphamvu, zinthu zowonongeka zimafunika kuti zikhale ndi mphamvu zowonongeka, ndiko kuti, coefficient yamagetsi yamagetsi iyenera kukhala yaying'ono.
(5) Kukhazikika kwamafuta kuyenera kukhala kwabwino.Pakangotha mphindi zochepa kuchokera pakuwombera mpaka pakupanga zitsulo zamagetsi, kutentha kumatsika kwambiri kuchokera ku 1600 ° C mpaka pansi pa 900 ° C, kotero kuti zipangizo zokanira zimafunika kuti zikhale ndi kutentha kwabwino.
(6) Kukana kwamphamvu kwa dzimbiri.Panthawi yopanga zitsulo, slag, gasi wa ng'anjo ndi zitsulo zosungunuka zonse zimakhala ndi mphamvu zowonongeka za mankhwala pazitsulo zotsutsa, choncho zipangizo zokanira zimafunika kuti zikhale ndi kukana kwa dzimbiri.
Kusankhidwa kwa zida zokanira pamakoma am'mbali
Njerwa za MgO-C zimagwiritsidwa ntchito pomanga makoma am'mbali mwa ng'anjo zamagetsi popanda makoma oziziritsa madzi.Malo otentha ndi mizere ya slag ali ndi mikhalidwe yovuta kwambiri yothandizira.Sikuti amangowonongeka kwambiri komanso amawonongeka ndi chitsulo chosungunuka ndi slag, komanso amakhudzidwa kwambiri ndi makina akamawonjezedwa, komanso amakhudzidwa ndi matenthedwe otentha kuchokera ku arc.Chifukwa chake, zigawozi zimamangidwa ndi njerwa za MgO-C zogwira bwino ntchito.
Kwa makoma a mbali ya ng'anjo yamagetsi yokhala ndi makoma oziziritsa madzi, chifukwa chogwiritsa ntchito teknoloji yoziziritsa madzi, kutentha kwa kutentha kumawonjezeka ndipo ntchito zogwiritsira ntchito zimakhala zovuta kwambiri.Chifukwa chake, njerwa za MgO-C zokhala ndi kukana bwino kwa slag, kukhazikika kwamphamvu kwamafuta ndi ma conductivity apamwamba amafuta ayenera kusankhidwa.Zomwe zili mu kaboni ndi 10% ~ 20%.
Zipangizo zopangira makoma am'mbali mwa ng'anjo zamagetsi zamphamvu kwambiri
Makoma am'mbali mwa ng'anjo yamagetsi yamphamvu kwambiri (ng'anjo za UHP) nthawi zambiri amamangidwa ndi njerwa za MgO-C, ndipo malo otentha ndi malo otsetsereka amamangidwa ndi njerwa za MgO-C zogwira ntchito bwino (monga matrix athunthu a carbon MgO-C. njerwa).Kusintha kwambiri moyo wake wautumiki.
Ngakhale katundu wa khoma la ng'anjo wachepetsedwa chifukwa cha kusintha kwa njira zogwiritsira ntchito ng'anjo yamagetsi, zimakhala zovuta kuti zipangizo zowonongeka ziwonjezere moyo wautumiki wa malo otentha pamene zikugwira ntchito pansi pa UHP ng'anjo yosungunuka.Choncho, teknoloji yoziziritsa madzi yapangidwa ndikugwiritsidwa ntchito.Kwa ng'anjo zamagetsi pogwiritsa ntchito kugwiritsira ntchito EBT, malo ozizira madzi amafika 70%, motero amachepetsa kwambiri kugwiritsa ntchito zipangizo zotsutsa.Ukadaulo wamakono wozizira madzi umafunikira njerwa za MgO-C zokhala ndi matenthedwe abwino.Asphalt, njerwa za magnesia zomangidwa ndi utomoni ndi njerwa za MgO-C (carbon content 5% -25%) zimagwiritsidwa ntchito pomanga makoma a mbali ya ng'anjo yamagetsi.Pansi pa zovuta za okosijeni, ma antioxidants amawonjezeredwa.
Kwa madera otentha kwambiri omwe awonongeka kwambiri ndi machitidwe a redox, njerwa za MgO-C zokhala ndi maginito akuluakulu osakanikirana ngati zinthu zopangira, mpweya woposa 20%, ndi matrix onse a kaboni amagwiritsidwa ntchito pomanga.
Kupangidwa kwaposachedwa kwa njerwa za MgO-C za ng'anjo zamagetsi za UHP ndikugwiritsa ntchito kuwombera kotentha kwambiri kenako ndikuyika phula kuti apange njerwa zomwe zimatchedwa kuti fired-impregnated MgO-C njerwa.Monga tawonera mu Table 2, poyerekeza ndi njerwa zosaimbidwa, zotsalira za kaboni mu njerwa za MgO-C zomwe zidawotchedwa pambuyo pa kuyimitsidwa kwa phula ndi recarbonization zimawonjezeka pafupifupi 1%, porosity imachepa ndi 1%, ndipo kutentha kwamphamvu kwamphamvu ndi kupanikizika. kukana ndi Mphamvu zakhala zikuyenda bwino, kotero zimakhala zolimba kwambiri.
Magnesium refractory zida zamakhoma ang'anjo yamagetsi yamagetsi
Zingwe za ng'anjo yamagetsi zimagawidwa kukhala zamchere komanso acidic.Zakale zimagwiritsa ntchito zipangizo zopangira zinthu zamchere (monga magnesia ndi MgO-CaO refractory materials) monga ng'anjo yamoto, pamene omaliza amagwiritsa ntchito njerwa za silika, mchenga wa quartz, matope oyera, ndi zina zotero kuti amange ng'anjo yamoto.
Zindikirani: Pazida zomangira ng'anjo, ng'anjo zamagetsi zamchere zimagwiritsa ntchito zinthu zokanira zamchere, ndipo ng'anjo yamagetsi ya acidic imagwiritsa ntchito zinthu zokanira acidic.
Nthawi yotumiza: Oct-12-2023
