1- Yintoni Ukuphosa Isanti?
Ukubunjwa kwesantiyinkqubo yesiqhelo kodwa neyanamhlanje. Isebenzisa isanti eluhlaza (isanti emanzi) okanye isanti eyomileyo ukwenza iinkqubo zokubumba. Ukugalelwa kwesanti eluhlaza yeyona nkqubo indala isetyenziswa kwimbali. Xa usenza isikhunta, iipatheni ezenziwe ngamaplanga, isinyithi okanye iplastiki kufuneka ziveliswe ukuze zenze umgodi ongenanto. Isinyithi esinyibilikisiweyo sigalele kumngxuma ukwenza iiicastingsemva kokupholisa kunye nokuqina. Ukugalela isanti kubiza kancinci kuneezinye iinkqubo zokuphosazombini kuphuhliso lokungunda kunye neyunithi yokuphosa inxalenye.
Ukuphosa isanti, kusoloko kuthetha ukuphosa kwesanti eluhlaza (ukuba akukho nkcazo ekhethekileyo). Nangona kunjalo, kule mihla, ezinye iinkqubo zokuphosa nazo zisebenzisa isanti ukwenza umngundo. Banamagama abo, njengayeukuphosa iqokobhe, i-furan resin egqunywe isanti egayiweyo (akukho ntlobo yokubhaka),ukuphosa amagwebukunye ne-vacuum casting.
I-2 - Zenziwa Njani Iisanti?
Sineentlobo ezahlukeneyo zokuphosa ozikhethele zona. Inxalenye yenkqubo yokuzikhethela yeprojekthi yakho iya kuba kukukhethwa kwenkqubo yokuphosa eya kunceda iimfuno zakho. Eyona fomu idumileyo kukugalela kwesanti okubandakanya ukwenza umfuziselo weqhekeza eligqityiweyo (okanye ipateni) elixinzelelwe ngesanti kunye nezidibanisi zokubopha ukubumba iintsimbi zokugqibela. Ipateni isuswe emva kokuba isikhunta okanye impembelelo yenziwe, kwaye isinyithi singeniswa ngenkqubo yokugijima ukuzalisa i-cavity. Isanti kunye nentsimbi ziyahlukana kwaye iicastings ziyacocwa kwaye zigqitywe ukuze zithunyelwe kubathengi.
3 - Ingaba iSanti isetyenziselwa ntoni?
Ukubunjwa kwesantizisetyenziswa ngokubanzi kwi-aamashishini ahlukeneyokunye nezixhobo zoomatshini, ngakumbi kwiicastings ezinkulu kodwa ezinobunzima obuncinci. Ngenxa yexabiso eliphantsi lophuhliso lwezixhobo kunye nepateni, unokutyala ixabiso elifanelekileyo kwi-mold. Ngokubanzi, ukuphosa isanti lukhetho lokuqala koomatshini abanzima abanje ngeelori ezinomthwalo onzima, iimoto zothutho zikaloliwe, oomatshini bokwakha, iivalvu, iimpompo kunyeiinkqubo zamanzi. Ngokukodwa, iukutyhilwa kwesanti yentsimbi ye-ductilezisetyenziswa ngakumbi nangakumbi kumashishini anamhlanje.
I-4 - Ziziphi izinto eziluncedo kwiSand Casting?
✔ Iindleko eziphantsi ngenxa yexabiso eliphantsi kunye nezixhobo zokubumba ezinokusetyenziswa kwakhona kunye nezixhobo ezilula zokuvelisa.
✔ Uluhlu olubanzi lobunzima beyunithi ukusuka kwi-0.10 kg ukuya kwi-500 kgs okanye nangaphezulu.
✔ Ulwakhiwo olwahlukeneyo ukusuka kuhlobo olulula ukuya kuhlobo oluntsonkothileyo.
✔ Ifanelekile kwiimfuno zemveliso zobuninzi obahlukeneyo.
5 - Yeyiphi iMetal & alloys esenziwa kwiSand Casting Foundry?
Ngokubanzi uninzi lwesinyithi kunye ne-nonferrous metal kunye ne-alloys zinokujulwa ngenkqubo yokuphosa isanti. Ngezixhobo zeferrous,intsimbi engwevu, i-ductile cast iron, carbon steel,intsimbi yengxubevange, isixhobo sentsimbi kunye neiialloyi zentsimbi engenantozidla ngokugalelwa. Ukusetyenziswa kwe-nonferrous, uninzi lweAluminiyam, iMagnesium,Ii-alloys ezisekelwe kwi-Copperkunye nezinye izinto nonferrous zingaphoswa, ngelixaI-aluminium kunye ne-alloy yayozezona zisasazwe ngokusasazwa kwesanti.
I-6-Yeyiphi iNyamezelo yokuCasa enokuthi ifezekise iSanti yakho?
Ukunyamezela ukuphosa kwahlulwe kwi-Dimensional Casting Tolerances (DCT) kunye neGeometrical Casting Tolerances (GCT). Isebe lethu lingathanda ukuthetha nawe ukuba unesicelo esikhethekileyo malunga nonyamezelo olufunekayo. Apha koku kulandelayo kukho ibakala lokunyamezelana ngokubanzi esinokufikelela kulo ngokwethuukugalela isanti eluhlaza, ukubunjwa kobunjwa beqokobhe kunye nokugatywa kwesanti ye-furan yeresin:
✔ IBanga le-DCT nge-Green Sand Casting: CTG10 ~ CTG13
✔ IBanga leDCT ngeShell Mold Casting okanye iFuran Resin Sand Casting: CTG8 ~ CTG12
✔ IBanga le-GCT ngeSanti yeGreen Casting: CTG6 ~ CTG8
✔ IBanga le-GCT ngeShell Mold Casting okanye iFuran Resin Sand Casting: CTG4 ~ CTG7
I-7 - Yintoni i-Sand Molds?
Iimbumba zesanti zithetha iinkqubo zokubumba ezenziwe ngesanti eluhlaza okanye isanti eyomileyo. Izixokelelwano zokubumba isanti ikakhulu zigquma ibhokisi yesanti, i-spures, ingates, izinyusi, iincoro zesanti, isanti yokungunda, izibophelelo (ukuba zikhona), imathiriyeli enyibilikayo kunye nawo onke amanye amacandelo okungunda anokubakho.