I-graphite ecashileUngumkhiqizo okhethekile odlala indima ebalulekile kwinqubo yokucwengisisa yegolide, isiliva, ithusi nezinye izinsimbi eziyigugu. Yize abantu abaningi kungenzeka bangajwayelani, ukukhiqizwa kwama-graphite ama-brucibles kubandakanya izigaba ezimbalwa eziyinkimbinkimbi ukuqinisekisa ikhwalithi ephezulu namandla omshini womkhiqizo wokugcina. Kulesi sihloko, sizokwelulwa imininingwane yesigaba ngasinye esibandakanyeka kwinqubo yokukhiqiza ye-graphite ebekiwe.
Izigaba zokuqala zokukhiqiza ama-graphite ama-crucibles zibandakanya inqubo yokumisa. Ngemuva kokubikwa futhi kusesekelweni kwezingxenye zayo ezisekelwayo, zihlotshaniswa ngokuya ngamazinga omkhiqizo aqediwe. Lokhu kuhlola kuqinisekisa ukuthi abantu abafanelekayo kuphela abathuthukela ezigabeni ezilandelayo. Ngemuva kokuhlunga, babhekana nenqubo ekhanyayo, lapho indawo ebekiwe ihlanganiswa khona ne-glaze. Lesi sisekelo se-glaze sisebenza ngezinhloso eziningana, okubandakanya ukukhulisa ubuntu kanye namandla emishini ye-ebekiwe, ekugcineni ethuthukisa ikhwalithi yayo yonke.
Isiteji sokudubula yingxenye ebalulekile yenqubo yokukhiqiza. Kubandakanya ukufaka i-graphible ecashile emazingeni okushisa aphezulu e-kiln, ngaleyo ndlela aqinise ukwakheka kwecala. Le nqubo ibalulekile ukuqinisekisa ukuqina kanye nokwethenjwa kokucacisa ngesikhathi senqubo yokucwengisisa. Umgomo wokudubula ungahlukaniswa ngezigaba ezine ezahlukene ukuze uqonde kangcono ushintsho olwenzeka esakhiweni esibikayo ngalesi sicelo.
Isigaba sokuqala ukukhetha komsakazi kanye nokudubula, kanti izinga lokushisa ku-kiln ligcinwa cishe ku-100 kuye ku-300 ° C. Kulesi sigaba, umswakama osele ekufenina kancane kancane ususwe. Vula i-Skyn's Skylight ye-Kiln bese wehlisa ijubane izinga lokushisa ukuvikela ukushintshwa kwamazinga okushisa kungazelelwe. Ukulawulwa kokushisa kubalulekile kulesi sigaba, njengoba kakhulu umswakama oseleyo kungadala ukuthi kuphambanise noma kuqhume.
Isigaba sesibili yisigaba sokudubula okushisa okuphansi, ngokushisa kwama-400 kuye ku-600 ° C. Njengoba i-kiln iyaqhubeka nokushisa, amanzi aboshwe ngaphakathi kwe-escariable aqala ukudiliza ashiye. Izakhi eziphambili A12O3 neSio2, ezaziboshelwe kulobumba, ziqala ukuba khona eFree State. Kodwa-ke, kufanele kuqashelwe ukuthi ungqimba lwe-glaze ngaphezulu kwe-ebethelwe alikaze lincibilikile okwamanje. Ukuvimbela noma yiziphi lezimanga, izinga lokushisa kufanele libe lihamba kancane futhi liqinile. Ukushisa okusheshayo nokungalingani kungadala ukucacisa ukuqhekeka noma ukuwa, ukwehlisa ubuqotho bayo.
Ukungena esigabeni sesithathu, isigaba sokushisa sokushisa esiphakathi sivame ukwenzeka phakathi kuka-700 no-900 ° C. Kulesi sigaba, i-Amorphous Al2o3 ebumbaneni iguqulwa ngokwengxenye ukuze ithole i-y-hlobo Crystalline Al2o3. Lokhu kuguqulwa kuthuthukisa ubuqotho besakhiwo se-Earcidible. Kubalulekile ukugcina ukulawulwa kokushisa okuqondile ngalesi sikhathi ukugwema noma imiphi imiphumela engathandeki.
Isigaba sokugcina yisigaba sokudubula okushisa kakhulu, ngokushisa ngenhla kwe-1000 ° C. Ngalesi sikhathi, ungqimba we-glaze ekugcineni uncibilika, uqinisekise indawo ebekiwe futhi ivaliwe. Amazinga okushisa aphezulu nawo abe nomthelela ekuthuthukisweni okuphelele emandleni okuqina asebenza ngokungemthetho nokuqina.
Konke kukho konke, inqubo yokukhiqiza ama-graphite ama-braptible ifaka izigaba ezimbalwa ezizwakalayo. Ukusuka komisa futhi kuhlolwe umkhiqizo osuqediwe ekukhazimuleni nasekudubuleni, isinyathelo ngasinye sibalulekile ekuqinisekiseni ikhwalithi nokwethenjwa kwegraphu yokugcina ebekiwe. Ukulandela izindlela zokulawula izinga lokushisa kanye nokugcina amanani afanele okushisa kubalulekile ukuvikela noma yiziphi izingozi noma izingozi. Umphumela wokugcina uyigrafu esezingeni eliphakeme ebekiwe ongamelana nenqubo yokucwengisisa okuqinile kwezinsimbi eziyigugu.
Isikhathi sePosi: Nov-29-2023