Isingeniso, isicelo kanye nenqubo yokukhiqiza ye-corundum emhlophe
I-White Fused Alumina (WFA)iyi-abrasive yokwenziwa eyenziwe ngempushana ye-alumina yezimboni njengento eluhlaza eyinhloko, epholiswayo futhi ifakwe amakristalu ngemva kokuncibilika kwe-arc yezinga eliphezulu lokushisa. Ingxenye yayo eyinhloko yi-aluminium oxide (Al₂O₃), enobumsulwa obungaphezu kwama-99%. Imhlophe, iqinile, iminyene, futhi inokumelana nezinga lokushisa eliphakeme kakhulu, ukumelana nokugqwala kanye nezakhiwo zokuvikela. Ingenye yama-abrasive athuthukisiwe asetshenziswa kakhulu.
1. Isingeniso Somkhiqizo
I-corundum emhlophe iwuhlobo lwe-corundum yokwenziwa. Uma iqhathaniswa ne-brown corundum, inokuqukethwe okuphansi kokungcola, ubulukhuni obuphakeme, umbala omhlophe, ayikho i-silica yamahhala, futhi ayinabungozi emzimbeni womuntu. Ifaneleka ikakhulukazi izikhathi zenqubo ezinezidingo eziphezulu zokuhlanzeka okulimazayo, umbala nokusebenza kokugaya. I-corundum emhlophe inobunzima be-Mohs obufika ku-9.0, okwesibili ngemva kwedayimane ne-silicon carbide. Inezici ezinhle zokuzilola, akulula ukunamathela endaweni yokusebenza ngesikhathi sokugaya, futhi inokukhipha ukushisa okusheshayo. Ifaneleka kokubili izindlela zokucubungula ezomile nezimanzi.
2. Izicelo Eziyinhloko
Ngenxa yezakhiwo zayo eziyingqayizivele zomzimba namakhemikhali, i-corundum emhlophe isetshenziswa kabanzi emikhakheni eminingi ephezulu, kufaka phakathi kodwa ingagcini kulezi zici ezilandelayo:
Ama-Abrasives namathuluzi okugaya
Isetshenziselwa ukukhiqiza amasondo e-ceramic okugaya, amasondo okugaya i-resin, indwangu ye-emery, i-sandpaper, ama-scouring pads, ama-grinding pasta, njll. Kuyinto ekahle yokugaya insimbi ye-high-carbon steel, i-alloy steel, insimbi engagqwali, ingilazi, izitsha zobumba nezinye izinto.
Ukuqhunyiswa kwesihlabathi nokupholisha
Ifanele ukuhlanza ubuso bensimbi, ukususwa kokugqwala, ukuqinisa ubuso nokwelashwa kwe-matte. Ngenxa yokuqina kwayo okuphezulu futhi ayinabo ubuthi futhi ayinabungozi, ivamise ukusetshenziselwa ukuqhumisa isihlabathi nokupholisha izibungu ezinembayo nemikhiqizo yensimbi engagqwali.
Izinto eziphikisayo
Ingasetshenziswa njenge-aggregate noma impushana ecolekile yezitini eziphikisayo ezithuthukisiwe, izinsimbi, nezinto zokuphonsa. Isetshenziswa kabanzi ezindaweni ezinokushisa okuphezulu njengensimbi, izinsimbi zomlilo ezincibilikisa insimbi ezingenayo ayoni, izikele zengilazi, njll.
Imboni ye-elekthronikhi/yokubona
Isetshenziselwa ukukhiqiza izitsha zobumba ezihlanzekile, ukugaya ingilazi ebonakalayo, ukupholisha kwesapphire substrate ye-LED, ukuhlanza nokugaya i-semiconductor silicon wafer, njll., kanye ne-high-purity ultrafine white corundum powder iyadingeka.
Isigcwalisi esisebenzayo
Isetshenziselwa irabha, ipulasitiki, i-coating, i-ceramic glaze nezinye izimboni ukuze kuthuthukiswe ukumelana nokugqokwa, ukuzinza kokushisa kanye nokusebenza kokufakwa kwezinto.
3. Inqubo yokukhiqiza
Inqubo yokukhiqiza i-white corundum iqinile futhi yesayensi, ikakhulukazi kufaka phakathi izinyathelo ezibalulekile ezilandelayo:
Ukulungiselela impahla eluhlaza
Khetha impushana ye-alumina yezimboni ehlanzekile kakhulu (Al₂O₃≥99%), isikrini futhi uhlole ngamakhemikhali izinto zokusetshenziswa ukuze uqinisekise ukuthi okuqukethwe okungcolile kuphansi kakhulu futhi usayizi wezinhlayiyana ufana.
Ukuncibilika kwe-arc
Faka impushana ye-alumina esithandweni se-arc yezigaba ezintathu bese uyincibilikisa ekushiseni okuphezulu okungaba ngu-2000 ℃. Phakathi nenqubo yokuncibilika, ama-electrode ayashiswa ukuze ancibilike ngokuphelele i-alumina futhi asuse ukungcola ukuze enze ukuncibilika okuhlanzekile kwe-corundum.
Ukupholisa icrystallization
Ngemuva kokuthi ukuncibilika sekupholile, kucwebezela ngokwemvelo ukwakha amakristalu amhlophe e-corundum. Ukupholisa kancane kusiza ukuthuthukiswa kokusanhlamvu nokusebenza okuzinzile, okuyisixhumanisi esiyinhloko sokuqinisekisa ikhwalithi ye-corundum emhlophe.
Ukuchotshozwa nokuhlukaniswa kazibuthe
Amakristalu e-corundum apholile achotshoziwe futhi achotshozwe kahle ngemishini yemishini, bese ukungcola okufana nensimbi kususwa ukuhlukaniswa okunamandla kazibuthe ukuze kuqinisekiswe ukuhlanzeka komkhiqizo ophelile.
Ukuchotshozwa nokuhlolwa
Sebenzisa izigayo zamabhola, izigayo zokugeleza komoya kanye nezinye izinto zokusebenza ukuze uchoboze i-corundum emhlophe kusayizi wezinhlayiyana ezidingekayo, bese usebenzisa izinto zokuhlola ezinembayo eziphezulu ukuze uhlele usayizi wezinhlayiyana ngokuvumelana nezindinganiso zamazwe ngamazwe (njenge-FEPA, i-JIS) ukuze uthole isihlabathi noma impushana encane yokucaciswa okuhlukile.
Ukugreda kahle nokuhlanza (kuye ngokuthi inhloso)
Kwezinye izinhlelo zokusebenza ezisezingeni eliphezulu, njengebanga le-elekthronikhi kanye ne-optical grade white corundum powder, ukuhlukaniswa kwe-air flow, pickling kanye nokuhlanza kwe-ultrasonic kwenziwa ukuze kuthuthukiswe ubumsulwa kanye nokunemba kokulawula usayizi wezinhlayiyana.
Ukuhlolwa kwekhwalithi nokupakishwa
Umkhiqizo oqediwe udinga ukwenza uchungechunge lwezinqubo zokulawula ikhwalithi njengokuhlaziywa kwamakhemikhali (Al₂O₃, Fe₂O₃, Na₂O, njll.), ukutholwa kosayizi wezinhlayiyana, ukutholwa kobumhlophe, njll., futhi ngemva kokuphumelela ukuhlolwa, upakishwa ngokuvumelana nezidingo zekhasimende, ngokuvamile ezikhwameni ezingu-25kg noma izikhwama zamathani.
Njengempahla yezimboni esebenza kahle kakhulu, i-corundum emhlophe idlala indima engenakuthathelwa indawo ezimbonini eziningi. Akuyona nje into emele ebalulekile yama-abrasives asezingeni eliphezulu, kodwa futhi iyisisetshenziswa esibalulekile esibalulekile emikhakheni yobuchwepheshe obuphezulu njengokusebenza ngokunemba, izitsha zobumba ezisebenzayo, nezinto zikagesi. Ngokuthuthuka okuqhubekayo kobuchwepheshe bezimboni, izidingo zekhwalithi yemakethe ye-corundum emhlophe nazo zithuthuka ngokuqhubekayo, okuphinde kugqugquzele abakhiqizi ukuthi baqhubeke nokwandisa izinqubo, bathuthukise ukusebenza komkhiqizo, futhi bathuthuke beqonde ekuhlanzekeni okuphezulu, usayizi wezinhlayiyana ocolekile, kanye nekhwalithi ezinzile.