Njira Yopangira Ufa wa Brown Corundum Micropowder ndi Kuwongolera Ubwino
Mukalowa mu fakitale iliyonse yokonza zida, mpweya umadzaza ndi fungo la fumbi lachitsulo, limodzi ndi phokoso la makina opera. Manja a antchito amapaka mafuta akuda, koma patsogolo pawo pali ufa wofiirira wonyezimira—ufa wa brown corundum micropowder—ndi “mano” ofunikira kwambiri komanso “m'mphepete mwake” mwa mafakitale amakono. Zipangizo zolimba izi, zomwe zimadziwika kuti “corundum” ndi anthu ogwira ntchito m'makampani, zimasinthidwa kuchoka pa miyala kukhala ufa wabwino kwambiri, zomwe zimayesedwa kutentha kwambiri komanso kulondola.
1. Malawi a madigiri chikwi: Njira Yopangira Ufa wa Brown Corundum Micropowder
Ufa wa corundum wofiiriraZimayamba ngati mikwingwirima ya bauxite yosadzikuza. Musanyoze mikwingwirima iyi ya nthaka; iyenera kukhala miyala yapamwamba kwambiri yokhala ndi Al₂O₃ ya osachepera 85% kuti iyenerere kusungunula. Nthawi yomwe ng'anjo yosungunula imatsegulidwa, imakhala yowoneka bwino kwambiri—kutentha mkati mwa ng'anjo yamagetsi kumakwera, kufika pa 2250°C. Bauxite, yophatikizidwa ndi zinyalala zachitsulo ndi coke, imagwa ndikusungunuka m'malawi amphamvu, kuyeretsa ndikuchotsa zonyansa, pamapeto pake kupanga mikwingwirima yofiirira ya corundum. Kusankha mtundu wa ng'anjo kumakhalanso kosiyana: ng'anjo yopendekera imapereka kusinthasintha kwabwino komanso kuyera kwakukulu, koyenera zinthu zabwino; ng'anjo yokhazikika imapereka kutulutsa kwakukulu komanso mtengo wotsika. Opanga nthawi zambiri amasankha kutengera zomwe akufuna.
Brown corundumMabuloko atsopano ochokera mu uvuni akadali "ovuta," osati ufa wabwino. Kenako, chotsukira chimatenga malo: chotsukira cha mano awiri chotsukira chophwanyidwa, kuswa bulk, pomwe chotsukira choyimirira chimagwira ntchito yophwanya bwino, kuswa tinthu tating'onoting'ono kukhala zidutswa za millimeter. Koma si zokhazo—kulekanitsa maginito ndi kuchotsa chitsulo ndikofunikira kwambiri paubwino. Chikayatsidwa, chotsukira maginito cha gradient chimatha kuchotsa kwathunthu ma filings otsala achitsulo kuchokera kuzinthuzo. Zotsukira maginito zamphamvu kwambiri zomwe zimagwiritsidwa ntchito ndi makampani monga Henan Ruishi zimatha kuchepetsa Fe₂O₃ kufika pansi pa 0.15%, ndikuyika maziko a pickling yotsatira.
Thanki yophikira imasunganso zinsinsi. Yankho la 15%-25% la hydrochloric acid limagwiritsidwa ntchito kwa maola 2-4. Pophatikizidwa ndi chipangizo choyeretsera cha Zhenyu Grinding chotchedwa "push-pull cleaning device", ufawo umagwedezeka ndikutsukidwa, kusungunula zinyalala monga silicon ndi calcium, zomwe zimapangitsa kuti ufawo ukhale woyera. Gawo lomaliza loyeretsera lili ngati "draft": zotchingira zogwedezeka zimapereka zotchingira mosalekeza, kulekanitsa tinthu tating'onoting'ono kuchokera ku topyapyala kupita ku topyapyala. Chipangizo choyeretsera cha Chongqing Saite Corundum chopangidwa ndi patent chimakhala ndi zigawo zitatu za zotchingira komanso chotchingira theka, kuonetsetsa kuti kukula kwa tinthu tating'onoting'ono kumagawidwa molondola ngati momwe zimayesedwera ndi rula. Kenako ufa wosalala wosefedwa umalembedwa ngati pakufunika—200#-0 ndi 325#-0 ndi zizindikiro zodziwika bwino. Tinthu tating'onoting'ono tonse ndi tofanana ngati mchenga, kupambana kwenikweni.
2. Kuyang'anira Kwabwino Kwambiri: Njira Yothandiza Kuti Ubwino wa Ufa Wa Micropowder Ukhale Wabwino
Kodi ufa wa corundum wofiirira umagwiritsidwa ntchito kuti? Kuyambira kupukuta galasi la foni yam'manja mpaka ku ziwiya zophikira zitsulo, ngakhale kuchepa pang'ono kwa magwiridwe antchito kungayambitse mkwiyo kwa makasitomala. Chifukwa chake, kuwongolera khalidwe ndi gwero losalekeza la kupsinjika mufakitale. Choyamba, ganizirani kapangidwe ka mankhwala—Al₂O₃ iyenera kukhala ≥95% (zinthu zapamwamba zimafuna ≥97%), TiO₂ ≤3.5%, ndi SiO₂ ndi Fe₂O₃ ziyenera kusungidwa mkati mwa 1% ndi 0.2% motsatana. Akatswiri a labotale amawunika spectrometer tsiku lililonse; ngakhale kusinthasintha pang'ono kwa deta kungayambitse kukonzanso gulu lonse.
Kuyesa katundu weniweni ndi kovuta kwambiri:
Kulimba kwa Mohs kuyenera kufika pa 9.0. Chitsanzo chimakanda pa mbale yosonyezera; chizindikiro chilichonse cha kufewa chimaonedwa ngati cholephera.
Kuchuluka kwenikweni kuli pakati pa 3.85-3.9 g/cm³. Kupatuka kumasonyeza vuto ndi kapangidwe ka kristalo.
Kuyesa kwa refractory n'kovuta kwambiri—kuphwanya ndi ufa pambuyo poti zaponyedwa mu uvuni wa 1900°C kwa maola awiri? Gulu lonse lachotsedwa!
Kufanana kwa kukula kwa tinthu n'kofunika kwambiri pa zotsatira za kupukuta. Woyang'anira khalidwe amafalitsa supuni yodzaza ya ufa pansi pa chowunikira kukula kwa tinthu ta laser. Kupatuka kulikonse mu mtengo wa D50 woposa 1% kumaonedwa ngati kulephera. Kupatula apo, kukula kosagwirizana kwa tinthu tating'onoting'ono kumabweretsa mikwingwirima kapena mabala pamwamba pa chitsulo chopukutidwa, zomwe zimapangitsa kuti makasitomala adandaule.
Muyezo wa dziko lonse wa GB/T 2478-2022, womwe wasinthidwa mu 2022, wakhala ngati chivundikiro chachitsulo cha mafakitale. Chikalata cholimba chaukadaulo ichi chimayang'anira chilichonse kuyambira kapangidwe ka mankhwala ndi kapangidwe ka makristalo mpaka kulongedza ndi kusungiracorundum yofiiriraMwachitsanzo, zimafuna kuti α-Al₂O₃ iwonetse mawonekedwe a kristalo wa trigonal. Kodi pali kusiyana kwa makristalo pansi pa maikulosikopu? Pepani, mankhwalawa adzatsekedwa! Opanga tsopano ayeneranso kulembetsa kutentha ndi chinyezi m'nyumba yosungiramo zinthu—poopa kuti ufa wa micropowders unganyowe ndi kusonkhana pamodzi, zomwe zingawononge mbiri yawo.
3. Kusandutsa Zinyalala Kukhala Chuma: Ukadaulo Wobwezeretsanso Umabweretsa Vuto pa Zinthu Zogwiritsidwa Ntchito
Makampani opanga ma corundum akhala akuvutika kwa nthawi yayitali chifukwa cha kuchuluka kwa zinyalala zonyamulira ndi mawilo opera, zomwe sizimangotenga malo okha komanso zimaipitsa chilengedwe. Komabe, m'zaka ziwiri zapitazi, ukadaulo wa "corundum wobwezerezedwanso" watulukira, zomwe zapangitsa kuti zinthu zinyalala zikhale zatsopano. Patent yatsopano ku Yingkou, Liaoning Province, yapititsa patsogolo ntchito yobwezeretsanso: choyamba, zinthu za corundum zonyamulira zimapatsidwa "bafa" kuti zichotse zodetsa, kutsatiridwa ndi kuphwanya ndi kulekanitsa maginito, ndipo pomaliza, kusakaniza kwambiri ndi hydrochloric acid. Njirayi imawonjezera kuchotsa zodetsa ndi 40%, zomwe zimapangitsa kuti ntchito ya zinthu zobwezerezedwanso ikhale yofanana ndi ya ufa wa micropowder.
Kugwiritsa ntchito zinthu zobwezerezedwanso kukukulirakulira. Mafakitale obwezerezedwanso amakonda kuigwiritsa ntchito popanga dongo la taphole—iyenera kusakanizidwa ndi zinthu zotayidwa, ndipo zinthu zobwezerezedwanso zimapereka ndalama zambiri. Chabwino kwambiri, njira yobwezerezedwanso imachepetsacorundum yofiiriramtengo wake ndi 15%-20%, zomwe zimapangitsa kuti akuluakulu a boma asangalale kwambiri. Komabe, akatswiri akale a makampani akuchenjeza kuti: “Kupukuta bwino kumafuna zinthu zopanda utoto. Ngakhale zinyalala zazing'ono zikasakanizidwa ndi zinthu zobwezerezedwanso, pamwamba pa galasi padzakhala chizindikiro nthawi yomweyo!”
4. Mapeto: Ufa wa Micro, Ngakhale Uli Waung'ono, Umanyamula Kulemera kwa Makampani
Kuyambira malawi oyaka a ng'anjo zamagetsi mpaka phokoso la maginito olekanitsa, kuyambira kugwedezeka kwa matanki ophikira mpaka mizere yowunikira ya laser particles analyzers—kubadwa kwa brown corundum micropowder ndi chinthu chaching'ono kwambiri m'makampani amakono. Ma patent atsopano, miyezo yatsopano ya dziko, ndi ukadaulo wobwezeretsanso zinthu zikupitiriza kukweza denga la makampani. Kufuna kwa mafakitale otsika kuti azitha kuyeretsa bwino kwambiri pamwamba pa nthaka kukupitilizabe kukweza khalidwe la micropowder. Pa mzere wopangira, matumba a ufa wofiirira amatsekedwa ndikuyikidwa m'magalimoto akuluakulu, kupita ku mafakitale mdziko lonselo. Angakhale osayamikiridwa, koma amathandizira mphamvu ya Made in China, pansi pa pamwamba pa kunyezimira kwake kwapamwamba.