Ukubunjwa kwesihlabathi: Ukukhishwa kwesihlabathi okuvame ukusetshenziswa embonini ye-valve nakho kungahlukaniswa ngezinhlobo ezahlukene zesihlabathi ezifanaisihlabathi esimanzi, isihlabathi esomile, isihlabathi sengilazi yamanzi ne-furan resin no-bake sandngokwezibophezelo ezihlukene.
(1) Isihlabathi esiluhlaza siyindlela yenqubo yokubumba lapho kusetshenziswa i-bentonite njengesibophezelo emsebenzini. Izici zayo yilezi: isikhunta sesihlabathi esiqediwe asidingi ukomiswa noma siphathwe ukuqina okukhethekile, isikhunta sesihlabathi sinamandla athile amanzi, futhi umgogodla wesihlabathi kanye negobolondo kunezimvume ezingcono, ezilungele ukuhlanza nokukhipha isihlabathi esiwayo. Ukusebenza kahle kokukhiqiza kokubumba kuphezulu, umjikelezo wokukhiqiza mfushane, futhi izindleko zempahla nazo ziphansi, okulungele ukuhlela ukukhiqizwa komugqa womhlangano. Ukungalungi kwayo yilezi: ukulingwa kujwayele ukuba nokukhubazeka okufana nezimbotshana, ukufakwa kwesihlabathi, nesihlabathi esinamathelayo, futhi ikhwalithi yokulingisa, ikakhulukazi ikhwalithi yangaphakathi, ikude nokwanele.
(2) Isihlabathi esomile siyinqubo yokumodela kusetshenziswa ubumba njengesihlanganisi, futhi i-bentonite encane ingathuthukisa amandla ayo amanzi. Izici zayo yilezi: isikhunta sesihlabathi sidinga ukomiswa, sinokungena kahle komoya kanye nokuhlakazeka komoya, akulula ukukhiqiza amaphutha njengokugezwa kwesihlabathi, ukunamathela kwesihlabathi, nama-pores, futhi izinga langaphakathi lokubunjwa nalo lihle kakhulu. Ukungalungi kwayo yilezi: imishini yokomisa isihlabathi iyadingeka, futhi umjikelezo wokukhiqiza mude kakhulu.
(3) Isihlabathi se-sodium silicate siyindlela yokubumba esebenzisa ingilazi yamanzi njengesibophelelo. Izici zayo yilezi: ingilazi yamanzi inomsebenzi wokukwazi ukuqina ngokuzenzakalelayo ngemva kokuhlangana ne-CO2, futhi ingaba nezinzuzo ezihlukahlukene kanye nezinzuzo zokumodela kokuqina kwegesi kanye nokwenza okuyisisekelo. Kodwa-ke, kukhona okungalungile njengokugoqeka okungalungile kwegobolondo, ubunzima ekuhlanzeni isihlabathi ukuze kukhishwe, kanye nezinga eliphansi lokugaywa kabusha kwesihlabathi esisetshenzisiwe.
(4) I-Furan resin no-bake sand molding iyindlela yenqubo yokuphonsa ene-furan resin njengesibophezelo. Emazingeni okushisa asekamelweni, isihlabathi sokubumba siphulukiswa ngenxa yokusabela kwamakhemikhali kwe-binder ngaphansi kwesenzo se-ejenti yokuphulukisa. Izici zayo yilezi: isikhunta sesihlabathi asidingi ukomiswa, esinciphisa kakhulu umjikelezo wokukhiqiza futhi silondoloze amandla. Isihlabathi sokubumba i-resin kulula ukusihlanganisa futhi sinokugoqeka okuhle, futhi isihlabathi esibumbayo se-castings singaphinda sihlanzeke kalula, ukunemba kobukhulu bokubunjwa kuphezulu, nokuqedwa okungaphezulu kuhle, okungathuthukisa kakhulu ikhwalithi yokulingisa. Ukungalungi kwayo yilezi: izidingo zekhwalithi zesihlabathi esiluhlaza nazo ziphakeme, indawo yokukhiqiza inephunga elicasulayo kancane, futhi izindleko ze-resin nazo ziphezulu. Inqubo yokuhlanganisa isihlabathi esiziqinisayo se-furan resin: Isihlabathi esiziqinisayo se-resin kungcono senziwe umxube wesanti oqhubekayo, wengeze isihlabathi esiluhlaza, inhlaka, i-ejenti elaphayo, njll., bese uyixuba ngokushesha. Hlanganisa futhi usebenzise noma nini. Ukuhlelwa kokwengeza izinto zokusetshenziswa ezihlukahlukene lapho kuhlanganiswa isihlabathi se-resin limi kanje: isihlabathi sokuqala + i-ejenti yokwelapha (i-p-toluenesulfonic acid aqueous solution) - (120-180S) - resin + silane - (60-90S) - isihlabathi (5) Okujwayelekile Uhlobo lwesihlabathi Inqubo yokukhiqiza yokusakaza: ukusakaza okunembayo.
Isikhathi sokuthumela: Aug-17-2022
