Kodi ndi zinthu ziti zomwe zimagwiritsidwa ntchito popanga mafakitale a aluminium?

Zipangizo zokhazikitsira mafani a aluminiyumu nthawi zambiri zimakhala njerwa zosanjikiza, koma kusankha kumasiyana kwambiri kutengera magawo osiyanasiyana. Zowonongeka zamavuto opangira mafakitale a aluminiyamu amafunika kukhala ndi mphamvu yayikulu yosungunuka, pore m’mimba mwake, zotsika za SiO2, Na2O, ndi K2O. Chotengera m’ng’anjo chikuyeneranso kukhala ndi magwiridwe antchito sintering kutentha kwa 800 ° C. Mkonzi wa Kerui Refractories adapanga zida zodziwika bwino zowonongera mafakitale a aluminium kuti muzitha kungowerenga.

Kutentha kotentha kwa uvuni wa alumina wokutira kumaphimbidwa ndi kansalu kakang’ono kake kamene kamamveka pachikopa cha uvuni, kenako ndikumangidwa ndi nthaka yozungulira, njerwa zoyandama kapena njerwa zadongo, ndipo zina mwazo zimasinthidwa ndikuwunika kosavuta. Malo ogwirira ntchito a preheating zone amamangidwa ndi njerwa zadothi, ndipo njerwa za alumina zapamwamba kapena njerwa za phosphate zomangidwa ndi alumina zapamwamba zimagwiritsidwa ntchito m’malo opangira kutentha kwambiri.

Pakadali pano, mafakitale osapangika akhala akugwiritsidwa ntchito kwambiri m’mafakitale a aluminium, monga ma calcium otsika okhala ndi calcium yotsika pang’ono ophatikizika, ndi zida zazitsulo zolimbitsa zolimba pakamwa pamoto, zophika uvuni, ndi michira yamoto.

Ng’anjo yowala ndikukhazikitsa misomali yazitsulo zosazizira kapena ma ceramic anchor pachikopa cha ng’anjo, kenako ndikufalitsa wosanjikiza wa 20mm fiber yolimba yomwe imamvekera, ndipo pamapeto pake imatsanulira zida zazing’ono za 200-300.

Zida zogwirira ntchito m’ng’anjo yamoto ya aluminiyamu yolumikizidwa ndi aluminiyamu yosungunuka nthawi zambiri imamangidwa ndi njerwa za alumina zapamwamba zokhala ndi Al2O3 za 80-85%; akamayeretsa zitsulo zotayidwa kwambiri, njerwa za mullite kapena njerwa za corundum zimagwiritsidwa ntchito. Pamalo otsetsereka, ikani zinyalala zotayidwa ndi zinthu zina zokhala ndi ziphuphu komanso zotayika mosavuta, ndipo gwiritsani ntchito nitride ya silicon kuphatikiza ndi njerwa za silicon nitride. Malo olowa a aluminiyamu ndi malo ogulitsira a aluminiyamu amapukutidwa kwambiri ndi zotayidwa zosungunuka. Nthawi zambiri, kudzimangira nokha kapena silicon nitride yolumikizidwa ndi silicon carbide njerwa imagwiritsidwa ntchito, ndipo zircon njerwa zimagwiritsidwanso ntchito ngati zingwe. Chowotchera m’ng’anjo chomwe sichimalumikizana ndi zotayidwa kwambiri chimagwiritsa ntchito njerwa zadongo, zomangira zadothi kapena ma plastiki opangira.

Chowotchera m’ng’anjo chopangira utoto wa aluminiyamu ndi ma alloys a aluminiyumu nthawi zambiri chimakhala ndi aluminiyumu yowuma kwambiri, kapena silicon carbide imawonjezeredwa ku alumina youma ramming zakuthupi, zomwe sizimayambira kutayikira kwamadzi.