Izinhlobo Ezi-7 Zezinto Zokusetshenziswa Ezingavuthisi I-Corundum Ezivame Ukusetshenziswa Ezitsheni Ezingavuthisi I-Refractory

01 Si-Corundum ehlanganisiwe
I-corundum e-Sintered, eyaziwa nangokuthi i-sintered alumina noma i-semi-melten alumina, iyi-clinker ephikisayo eyenziwe nge-calcined alumina noma i-industrial alumina njengezinto zokusetshenziswa, igaywe ibe amabhola noma imizimba eluhlaza, bese igqwala ekushiseni okuphezulu okungu-1750 ~ 1900°C.

I-alumina ehlanganisiwe equkethe i-aluminium oxide engaphezu kuka-99% yenziwe kakhulu nge-corundum ehlanganisiwe kahle. Izinga lokukhishwa kwegesi lingaphansi kuka-3.0%, ubuningi bevolumu bufinyelela ku-3.60%/imitha ye-cubic, ukuthambekela kwayo kuseduze nendawo yokuncibilika kwe-corundum, inokuqina okuhle kwevolumu kanye nokuqina kwamakhemikhali emazingeni okushisa aphezulu, futhi ayigugi ngokunciphisa umoya, ingilazi encibilikisiwe kanye nensimbi encibilikisiwe. , amandla amahle okusebenza kanye nokumelana nokuguguleka ekushiseni okuvamile kanye nokushisa okuphezulu.

02I-Corundum Ehlanganisiwe
I-Fused corundum yi-corundum yokwenziwa eyenziwe ngokuncibilikisa i-alumina powder emsulwa esithandweni sikagesi esishisa kakhulu. Inezici ze-high melting point, amandla aphezulu omshini, ukumelana okuhle nokushaqeka kokushisa, ukumelana okuqinile kokugqwala kanye ne-linear expansion coefficient encane. I-Fused corundum iyinto eluhlaza yokukhiqiza izinto ezikhethekile eziphikisayo zezinga eliphezulu. Ikakhulukazi ifaka i-fused white corundum, i-fused brown corundum, i-sub-white corundum, njll.

03I-Corundum Emhlophe Ehlanganisiwe
I-corundum emhlophe ehlanganisiwe yenziwe nge-alumina powder emsulwa futhi incibilikiswa ekushiseni okuphezulu. Inombala omhlophe. Inqubo yokuncibilikisa i-corundum emhlophe ngokuyisisekelo inqubo yokuncibilikisa nokuphinda isetshenziswe i-alumina powder yezimboni, futhi ayikho inqubo yokunciphisa. Okuqukethwe kwe-Al2O3 akungaphansi kuka-9%, futhi okuqukethwe kokungcola kuncane kakhulu. Ubulukhuni buncane kancane kune-brown corundum futhi ukuqina kuphansi kancane. Ngokuvamile kusetshenziselwa ukwenza amathuluzi okukhuhla, izinto zobumba ezikhethekile kanye nezinto ezithuthukisiwe zokuphikisa.

04I-Corundum Ensundu Ehlanganisiwe
I-corundum ensundu ehlanganisiwe yenziwe nge-bauxite ephezulu ye-alumina njengento eluhlaza eyinhloko futhi ixutshwe ne-coke (anthracite), futhi incibilikiswa esithandweni sikagesi esishisa kakhulu emazingeni okushisa angaphezu kuka-2000°C. I-corundum ensundu ehlanganisiwe inokwakheka okujiyile kanye nobunzima obuphezulu futhi ivame ukusetshenziswa ezintweni zobumba, ekubunjweni okunembile kanye nezinto ezisezingeni eliphezulu zokungaguquguquki.

05I-Corundum engaphansi komhlophe
I-corundum engaphansi komhlophe ikhiqizwa ngokuncibilikisa i-bauxite yebanga elikhethekile noma yebanga lokuqala ngaphansi komoya oncibilikisayo nezimo ezilawulwayo. Uma incibilika, engeza i-ejenti yokunciphisa (ikhabhoni), i-ejenti yokuxazulula (i-iron filings) kanye ne-ejenti yokususa i-carburizing (isikali sensimbi). Ngenxa yokuthi ukwakheka kwayo kwamakhemikhali kanye nezakhiwo zomzimba kuseduze ne-corundum emhlophe, ibizwa ngokuthi i-corundum engaphansi komhlophe. Ubuningi bayo bungaphezu kuka-3.80g/cm3 futhi i-porosity yayo ebonakalayo ingaphansi kuka-4%. Iyinto efanelekile yokukhiqiza izinto ezisezingeni eliphezulu zokungagugi kanye nezinto ezingagugi.

06I-Chrome corundum
Ngokusekelwe ku-corundum emhlophe, kufakwa i-22% ye-chromium, futhi yenziwa ngokuncibilikisa esithandweni sikagesi se-arc. Umbala ubomvu onsomi. Ubulukhuni buphakeme kancane kune-corundum ensundu, bufana ne-corundum emhlophe, kanti ubulukhuni obuncane bungaba ngu-2200-2300Kg/mm2. Ubulukhuni buphakeme kunobe-corundum emhlophe futhi buphansi kancane kunobe-corundum ensundu.

07I-Zirconium Corundum
I-Zirconium corundum uhlobo lwe-corundum yokwenziwa eyenziwe ngokuncibilikisa i-alumina ne-zirconium oxide ekushiseni okuphezulu esithandweni sikagesi se-arc, i-crystallizing, ipholisa, ichoboza futhi ihlola. Isigaba esiyinhloko sekristalu se-zirconium corundum yi-α-Al2O3, isigaba sesibili sekristalu yi-baddeleyite, futhi kukhona nenani elincane lesigaba sengilazi. Ukwakheka kwekristalu kanye nesakhiwo se-zirconium corundum kuyizinto ezibalulekile ezithinta ikhwalithi yayo. I-Zirconium corundum inezici zobulukhuni obuphezulu, ukuqina okuhle, amandla aphezulu, ukuthungwa okujiyile, amandla okugaya aqinile, izakhiwo zamakhemikhali ezizinzile, kanye nokumelana okuhle nokushaqeka kokushisa. Isetshenziswa kabanzi ezimbonini ze-abrasives kanye nezinto eziphikisayo. Ngokusho kokuqukethwe kwayo kwe-zirconium oxide, ingahlukaniswa ibe amazinga amabili omkhiqizo: i-ZA25 ne-ZA40.