Ukugalelwa kwesanti: Ukugalelwa kwesanti ngokuqhelekileyo kusetyenziswa kushishino lwevalvu nako kohlulwa ngokweendidi ezahlukeneyo zesanti ezifanaisanti emanzi, isanti eyomileyo, isanti yeglasi yamanzi kunye nesanti ye-furan engabhakiyongokwezibophelelo ezahlukeneyo.
(1) Isanti eluhlaza yindlela yokubumba apho i-bentonite isetyenziswa njenge-binder emsebenzini. Iimpawu zayo zezi: ukubunjwa kwesanti egqityiweyo akufuneki ukuba yomiswe okanye kunyango olukhethekileyo lokuqina, isikhunta sesanti sinamandla athile amanzi, kwaye isiseko sesanti kunye neqokobhe zineemvumelwano ezingcono, ezilungele ukucoca kunye nesanti ewayo. Ukusebenza kwemveliso yokubumba kuphezulu, umjikelezo wemveliso umfutshane, kwaye ixabiso lezinto eziphathekayo nazo ziphantsi, ezilungele ukuququzelela imveliso yomgca wendibano. Ukungalungi kwayo kukuba: ukubunjwa kuxhomekeke kwiziphene ezifana ne-pores, inclusions yesanti, kunye nesanti encangathi, kunye nomgangatho we-castings, ngakumbi umgangatho wangaphakathi, ukude ngokwaneleyo.
(2) Intlabathi eyomileyo yinkqubo yokwenziwa kwemizekelo esebenzisa udongwe njengesidibanisi, yaye i<em>bentonite encinane inokuphucula amandla ayo amanzi. Iimpawu zayo zezi: ukungunda kwesanti kufuneka komiswe, kungene umoya olungileyo kunye nokusasazwa komoya, akukho lula ukuvelisa iziphene ezinje ngokuhlamba isanti, ukuncamathela kwesanti, kunye nemingxuma, kunye nomgangatho wangaphakathi wokugalela nawo ulungile ngokwentelekiso. Ukungalungi kwayo kukuba: izixhobo zokumisa isanti ziyafuneka, kwaye umjikelezo wemveliso ude kakhulu.
(3) Isanti yesodium silicate yindlela yokubumba esebenzisa iglasi yamanzi njengesibophelelo. Iimpawu zayo zezi: iglasi yamanzi inomsebenzi wokukwazi ukuqina ngokuzenzekelayo emva kokudibana ne-CO2, kwaye ingaba neenzuzo ezahlukeneyo kunye neenzuzo zegesi yokuqinisa imodeli kunye nokwenza ingundoqo. Nangona kunjalo, kukho izinto ezingeloncedo ezifana nokubola kweqokobhe elilambathayo, ubunzima bokucocwa kwesanti ukuze kusetyenziswe isanti, kunye nesantya esisezantsi sokuphinda sisetyenziswe kwisanti esetyenzisiweyo.
(4) I-Furan resin no-bake sand molding yindlela yokugalela kunye ne-furan resin njengesibophelelo. Kwiqondo lokushisa lokushisa, isanti yokubumba iyaphiliswa ngenxa yempendulo yeekhemikhali ye-binder phantsi kwesenzo se-agent ephilisayo. Iimpawu zayo zezi: isikhunta sesanti asifuni ukuba some, esinciphisa kakhulu umjikelezo wemveliso kwaye sigcine amandla. Isanti yokubumba i-resin kulula ukuyibamba kwaye inokonakala okuhle, kwaye isanti ebumbayo ye-castings inokucocwa ngokulula, ukuchaneka komgangatho wokujula kuphezulu, kunye nokugqitywa komphezulu kulungile, okunokuphucula kakhulu umgangatho wokusa. Ukungalungi kwayo kukuba: iimfuno zomgangatho wesanti ekrwada nazo ziphezulu, indawo yokuvelisa inevumba elincinci, kwaye ixabiso le-resin liphezulu. Inkqubo yokuxuba isanti ezenza lukhuni i-furan resin: Isanti ezenza lukhuni i-resin ingcono yenziwe ngumxube wesanti oqhubekayo, ukongeza isanti ekrwada, i-resin, i-ejenti yokunyanga, njl., kunye nokuzixuba ngokukhawuleza. Xuba kwaye usebenzise nangaliphi na ixesha. Umyalelo wokongeza izinto ezahlukeneyo ekrwada xa kuxutywa intlaka yentlabathi ngolu hlobo lulandelayo: isanti yokuqala + i-arhente yokunyanga (i-p-toluenesulfonic acid isisombululo esinamanzi) - (120-180S) - i-resin + silane - (60-90S) - isanti (5) uhlobo lwesanti Inkqubo yokuvelisa imveliso: ukuphosa ngokuchanekileyo.
Ixesha lokuposa: Aug-17-2022
