Ukuphonswa kwesihlabathi: Ukuphonswa kwesihlabathi okuvame ukusetshenziswa embonini yamavalvu nakho kungahlukaniswa ngezinhlobo ezahlukene zesihlabathi ezifanaisihlabathi esimanzi, isihlabathi esomile, isihlabathi sengilazi yamanzi kanye nesihlabathi esingabhakiwe se-furan resinngokwezinhlobo ezahlukene zokubopha.
(1) Isihlabathi esiluhlaza siyindlela yenqubo yokubumba lapho i-bentonite isetshenziswa khona njenge-binder emsebenzini. Izici zayo yilezi: isikhunta sesihlabathi esiqediwe asidingi ukomiswa noma siphathwe ngendlela ekhethekile yokuqinisa, isikhunta sesihlabathi sinamandla athile amanzi, kanti umongo wesihlabathi kanye negobolondo kunezimvume ezingcono, okulula ukuhlanzwa kokubumba kanye nesihlabathi esiwayo. Ukusebenza kahle kokukhiqiza ukubumba kuphezulu, umjikelezo wokukhiqiza mufushane, kanti izindleko zezinto nazo ziphansi, okulula ukuhlela ukukhiqizwa komugqa wokuhlanganisa. Izimo zayo ezimbi yilezi: ukubumba kuthambekele ezifweni ezifana nama-pores, ukufakwa kwesihlabathi, kanye nesihlabathi esinamathelayo, futhi ikhwalithi yokubumba, ikakhulukazi ikhwalithi yangaphakathi, akwanele neze.
(2) Isihlabathi esomile yinqubo yokwenza imodeli kusetshenziswa ubumba njengesihlanganisi, futhi i-bentonite encane ingathuthukisa amandla ayo okumanzi. Izici zayo yilezi: isikhunta sesihlabathi sidinga ukomiswa, sinokungena kahle komoya kanye nokusabalala komoya, akulula ukukhiqiza amaphutha njengokuwasha isihlabathi, ukunamathela kwesihlabathi, kanye nezikhala, futhi ikhwalithi yangaphakathi yokubumba nayo inhle kakhulu. Amaphutha ayo yilezi: imishini yokomisa isihlabathi iyadingeka, futhi umjikelezo wokukhiqiza mude kakhulu.
(3) Isihlabathi se-sodium silicate siyindlela yenqubo yokubumba esebenzisa ingilazi yamanzi njenge-binder. Izici zayo yilezi: ingilazi yamanzi inomsebenzi wokukwazi ukuqina ngokuzenzakalelayo ngemva kokubhekana ne-CO2, futhi ingaba nezinzuzo ezahlukahlukene zokwenziwa kwemodeli yokuqinisa igesi kanye nokwenza i-core. Kodwa-ke, kunezinkinga ezifana nokungaguquki kahle kwegobolondo, ubunzima bokuhlanza isihlabathi ukuze kufakwe izinto ezibunjiwe, kanye nezinga eliphansi lokuphinda kusetshenziswe isihlabathi esisetshenzisiwe.
(4) Ukubumba isihlabathi se-Furan resin okungabhakiwe kuyindlela yenqubo yokubumba ene-furan resin njenge-binder. Ezingeni lokushisa legumbi, isihlabathi sokubumba siyaphola ngenxa yokusabela kwamakhemikhali kwesihlanganisi ngaphansi kwesenzo se-ejenti yokwelapha. Izici zaso yilezi: isikhunta sesihlabathi asidingi ukomiswa, okunciphisa kakhulu umjikelezo wokukhiqiza futhi konge amandla. Isihlabathi sokubumba i-resin kulula ukusihlanganisa futhi sinokugoqeka okuhle, futhi isihlabathi sokubumba se-castings singahlanzwa kalula, ukunemba kobukhulu be-castings kuphezulu, futhi ukuphela kobuso kuhle, okungathuthukisa kakhulu ikhwalithi ye-castings. Okubi kwayo yilezi: izidingo zekhwalithi yesihlabathi esingavuthiwe nazo ziphakeme, indawo yokukhiqiza inephunga elicasulayo kancane, futhi izindleko ze-resin nazo ziphakeme. Inqubo yokuxuba isihlabathi sokuziqinisa se-furan resin: Isihlabathi sokuziqinisa se-resin kungcono senziwe ngomxube wesihlabathi oqhubekayo, wengeza isihlabathi esingavuthiwe, i-resin, i-ejenti yokwelapha, njll. ngokulandelana, bese uzixuba ngokushesha. Hlanganisa futhi usebenzise nganoma yisiphi isikhathi. Indlela yokufaka izinto zokusetshenziswa ezahlukahlukene lapho kuhlanganiswa isihlabathi se-resin yile elandelayo: isihlabathi sokuqala + i-ejenti yokwelapha (isixazululo samanzi se-p-toluenesulfonic acid) – (120-180S) – i-resin + i-silane – (60-90S) – isihlabathi (5) Uhlobo lwesihlabathi olujwayelekile Inqubo yokukhiqiza ukwakheka: ukwakheka okunembile.
Isikhathi sokuthunyelwe: Agasti-17-2022
