Chiyambi, kugwiritsa ntchito ndi kupanga ndondomeko ya white corundum
White Fused Alumina (WFA)ndi abrasive yokumba yopangidwa ndi mafakitale aluminiyamu ufa monga zopangira zazikulu, amene utakhazikika ndi crystallized pambuyo pa kutentha arc kusungunuka. Chigawo chake chachikulu ndi aluminium oxide (Al₂O₃), yokhala ndi chiyero choposa 99%. Ndi yoyera, yolimba, yowundana, ndipo imakhala ndi kutentha kwapamwamba kwambiri, kukana kwa dzimbiri komanso kutsekereza katundu. Ndi imodzi mwama abrasives omwe amagwiritsidwa ntchito kwambiri.
1. Chiyambi cha Zamalonda
White corundum ndi mtundu wa corundum wochita kupanga. Poyerekeza ndi corundum ya bulauni, imakhala ndi zonyansa zochepa, kuuma kwakukulu, mtundu woyera, palibe silika waulere, ndipo ilibe vuto kwa thupi la munthu. Ndikoyenera makamaka pazochitika za ndondomeko zomwe zimakhala ndi zofunikira zazikulu za chiyero cha abrasive, mtundu ndi ntchito yopera. White Corundum imakhala ndi kuuma kwa Mohs mpaka 9.0, yachiwiri kwa diamondi ndi silicon carbide. Lili ndi zinthu zabwino zodzipangira nokha, sizosavuta kumamatira pamwamba pa workpiece panthawi yopera, ndipo zimakhala ndi kutentha kwachangu. Ndi oyenera onse youma ndi chonyowa processing njira.
2. Main Applications
Chifukwa cha mawonekedwe ake apadera akuthupi ndi mankhwala, corundum yoyera imagwiritsidwa ntchito kwambiri m'magawo ambiri apamwamba, kuphatikiza koma osawerengeka pazinthu izi:
Abrasives ndi zida zopera
Amagwiritsidwa ntchito popanga mawilo a ceramic akupera, mawilo opukutira utomoni, nsalu ya emery, sandpaper, scouring pads, kupaka phala, etc. Ndibwino kwambiri pogaya zitsulo za carbon, alloy steel, zitsulo zosapanga dzimbiri, galasi, ceramics ndi zipangizo zina.
Kupukuta mchenga ndi kupukuta
Ndizoyenera kuyeretsa pamwamba pazitsulo, kuchotsa dzimbiri, kulimbitsa pamwamba ndi chithandizo cha matte. Chifukwa cha kuuma kwake kwakukulu komanso kopanda poizoni komanso kosavulaza, nthawi zambiri amagwiritsidwa ntchito popukuta mchenga ndi kupukuta nkhungu zolondola ndi zinthu zazitsulo zosapanga dzimbiri.
Refractory zipangizo
Itha kugwiritsidwa ntchito ngati yophatikizika kapena ufa wabwino wa njerwa zapamwamba zowumbidwa, zoponyera, ndi zida zoponyera. Amagwiritsidwa ntchito kwambiri m'malo otentha kwambiri monga zitsulo, zitsulo zosungunulira zitsulo zosapanga dzimbiri, zitsulo zamagalasi, ndi zina zotero.
Electronic/optical industry
Amagwiritsidwa ntchito popanga zoumba zoyera kwambiri, kupukutira magalasi owoneka bwino, kupukuta gawo lapansi la safiro la LED, kuyeretsa ndi kugaya kwa semiconductor silicon wafer, ndi zina zambiri, komanso ufa wapamwamba kwambiri wa ultrafine woyera corundum umafunika.
Ntchito filler
Amagwiritsidwa ntchito mu mphira, pulasitiki, zokutira, ceramic glaze ndi mafakitale ena kuti apititse patsogolo kukana, kukhazikika kwamafuta ndi magwiridwe antchito azinthu.
3. Njira yopangira
Kapangidwe ka white corundum ndizovuta komanso zasayansi, makamaka kuphatikiza izi:
Kukonzekera zakuthupi
Sankhani ufa wapamwamba wa alumina wa mafakitale (Al₂O₃≥99%), zenera ndikuyesani mankhwala kuti muwonetsetse kuti zonyansa ndizochepa kwambiri ndipo kukula kwa tinthu ndi kofanana.
Kusungunuka kwa arc
Ikani ufa wa alumina mu ng'anjo yamagulu atatu ndikusungunula pa kutentha kwakukulu pafupifupi 2000 ℃. Panthawi yosungunula, ma electrodes amatenthedwa kuti asungunuke kwathunthu alumina ndikuchotsa zonyansa kuti apange corundum yosungunuka.
Kuzizira crystallization
Chisungunucho chikakhazikika, mwachibadwa chimanyezimira kuti chipange makhiristo oyera a corundum. Kuzizira kwapang'onopang'ono kumathandiza chitukuko cha mbewu ndi ntchito yokhazikika, yomwe ndi ulalo wofunikira wotsimikizira mtundu wa white corundum.
Kuphwanya ndi kupatukana kwa maginito
Makristasi ozizira a corundum amaphwanyidwa ndikuphwanyidwa bwino ndi zipangizo zamakina, ndiyeno zonyansa monga chitsulo zimachotsedwa ndi kupatukana kwamphamvu kwa maginito kuti zitsimikizire chiyero cha mankhwala omalizidwa.
Kupsinjika ndi kupsinjika
Gwiritsani ntchito mphero za mpira, mphero zoyenda ndi mpweya ndi zipangizo zina kuti muphwanye corundum yoyera mpaka kukula kwa tinthu ting'onoting'ono, ndiyeno mugwiritse ntchito zipangizo zowonetsera bwino kwambiri kuti muzindikire kukula kwa tinthu tating'ono monga FEPA, JIS) kuti mupeze mchenga kapena ufa wawung'ono wa mitundu yosiyanasiyana.
Kuyika bwino ndi kuyeretsa (malingana ndi cholinga)
Kwa ena apamwamba-mapeto ntchito, monga pakompyuta kalasi ndi kuwala kalasi woyera corundum ufa, mpweya otaya gulu, pickling ndi akupanga kuyeretsa ikuchitika kupititsa patsogolo chiyero ndi tinthu kukula kulamulira molondola.
Kuyang'anira khalidwe ndi kulongedza
Chomalizidwacho chiyenera kuchitidwa njira zingapo zoyendetsera khalidwe monga kusanthula mankhwala (Al₂O₃, Fe₂O₃, Na₂O, etc.), kuzindikira kukula kwa tinthu, kuzindikira kuyera, ndi zina zotero, ndipo pambuyo popambana mayeso, amapakidwa malinga ndi zofuna za makasitomala, nthawi zambiri m'matumba a 25kg kapena matumba a tani.
Monga zida zamafakitale zomwe zimagwira ntchito bwino, white corundum imatenga gawo losasinthika m'mafakitale ambiri. Sichiyimira chofunikira chokha cha ma abrasives apamwamba kwambiri, komanso chinthu chofunikira kwambiri m'magawo apamwamba kwambiri monga makina olondola, zoumba zogwirira ntchito, ndi zipangizo zamagetsi. Ndi chitukuko chosalekeza chaukadaulo wamafakitale, zomwe zimafunikira pamsika wa white corundum zikuyenda bwino, zomwe zimalimbikitsanso opanga kuti apititse patsogolo njira, kuwongolera magwiridwe antchito, ndikukula molunjika kuchiyero chapamwamba, kukula kwa tinthu tating'ono, komanso mtundu wokhazikika.