Ukuphoswa kwesanti: Ukuphoswa kwesanti okuqhelekileyo okusetyenziswa kushishino lweevalvu nako kunokwahlulwahlulwa kube ziintlobo ngeentlobo zesanti ezifanaisanti emanzi, isanti eyomileyo, isanti yeglasi yamanzi kunye ne-furan resin engabhakwayo isantingokwee-binders ezahlukeneyo.
(1) Intlabathi eluhlaza yindlela yenkqubo yokubumba apho i-bentonite isetyenziswa khona njengesihlanganisi emsebenzini. Iimpawu zayo zezi: intlabathi egqityiweyo ayifuni komiswa okanye iphathwe ngonyango olukhethekileyo lokuqina, intlabathi inamandla athile amanzi, kwaye umongo wentlabathi kunye neqokobhe zinezibonelelo ezingcono, ezifanelekileyo ekucoceni intlabathi kunye nentlabathi ewayo. Ukusebenza kakuhle kwemveliso yokubumba kuphezulu, umjikelo wemveliso mfutshane, kwaye iindleko zezinto nazo ziphantsi, ezifanelekileyo ekuhleleni imveliso yomgca wokuhlanganisa. Iingxaki zayo zezi: intlabathi idla ngokuba neziphene ezifana neembobo, ukufakwa kwentlabathi, kunye nentlabathi enamathelayo, kwaye umgangatho wentlabathi, ingakumbi umgangatho wangaphakathi, awanelanga kwaphela.
(2) Intlabathi eyomileyo yinkqubo yokumodela esebenzisa udongwe njengesihlanganisi, kwaye i-bentonite encinci inokuphucula amandla ayo okumanzi. Iimpawu zayo zezi: isikhunta sentlabathi kufuneka somiswe, sinokungena komoya okuhle kunye nokusasazeka komoya, akulula ukuvelisa iziphene ezifana nokuhlanjwa kwentlabathi, ukunamathela kwentlabathi, kunye neembobo, kwaye umgangatho wangaphakathi we-casting nawo ulungile. Iingxaki zayo zezi: kufuneka izixhobo zokomisa isanti, kwaye umjikelo wemveliso mde.
(3) Isanti ye-sodium silicate yindlela yenkqubo yokubumba esebenzisa iglasi yamanzi njenge-binder. Iimpawu zayo zezi: iglasi yamanzi inomsebenzi wokukwazi ukuqina ngokuzenzekelayo emva kokudibana ne-CO2, kwaye inokuba neenzuzo ezahlukeneyo kunye neenzuzo zokumisela ukuqina kwegesi kunye nokwenza isiseko. Nangona kunjalo, kukho iingxaki ezifana nokungaguquki kakuhle kwegobolondo, ubunzima bokucoca isanti xa kusenziwa i-castings, kunye nesantya esiphantsi sokurisayikilisha isanti esetyenzisiweyo.
(4) Ukubumba isanti yeFuran resin engabhakiyo yindlela yenkqubo yokubumba esebenzisa i-furan resin njenge-binder. Kwiqondo lobushushu begumbi, isanti yokubumba iyanyangeka ngenxa yempendulo yekhemikhali ye-binder phantsi kwesenzo se-agent yokuphilisa. Iimpawu zayo zezi: i-mold yesanti ayifuni komiswa, nto leyo enciphisa kakhulu umjikelo wemveliso kwaye igcine amandla. Isanti yokubumba i-resin kulula ukuyihlanganisa kwaye inokugobeka kakuhle, kwaye isanti yokubumba ye-castings nayo inokucocwa ngokulula, ukuchaneka kobukhulu be-castings kuphezulu, kwaye ukugqitywa komphezulu kulungile, okunokuphucula kakhulu umgangatho we-castings. Iingxaki zayo zezi: iimfuno zomgangatho wesanti eluhlaza nazo ziphezulu, indawo yemveliso inevumba elicaphukisayo kancinci, kwaye ixabiso le-resin nalo liphezulu. Inkqubo yokuxuba isanti yokuziqinisa ye-furan resin: Isanti yokuziqinisa ye-resin ikhethwa ukuba yenziwe ngumxube wesanti oqhubekayo, wongeza isanti eluhlaza, i-resin, i-agent yokuphilisa, njl. njl. ngokulandelanayo, kwaye uzixube ngokukhawuleza. Xuba kwaye uyisebenzise nangaliphi na ixesha. Indlela yokufaka izinto ezahlukeneyo xa kuxutywa isanti yeresin yile ilandelayo: isanti yokuqala + iarhente yokunyanga (isisombululo samanzi se-p-toluenesulfonic acid) – (120-180S) – iresin + silane – (60-90S) – isanti (5) Uhlobo lwesanti oluqhelekileyo Inkqubo yokuvelisa i-Cast: i-cast echanekileyo.
Ixesha lokuthumela: Agasti-17-2022
