Ukwabiwa kobungakanani bamasuntswana esanti ekrwada kuchaphazela kakhulu umgangatho wokuphosa. Xa usebenzisa igrit erhabaxa, isinyithi esinyibilikisiweyo sikholisa ukungena kwigrit engundoqo, nto leyo ekhokelela kumphezulu ombi wokuphosa. Ukusetyenziswa kwesanti ecolekileyo kunokuvelisa indawo yokuphosa engcono kunye negudileyo, kodwa ifuna inani eliphezulu le-binder, kwaye kwangaxeshanye kunciphisa ukunyanzeliswa komoya okungundoqo, okunokubangela iziphene zokuphosa. Kwinkqubo yokugalelwa kwesanti ngokubanzi, ngakumbi xa kusetyenziswa isanti yesilica, isanti ekrwada iba phakathi kolu luhlu lulandelayo lobungakanani:
Umyinge wokucoleka 50–60 AFS (ubungakanani besuntswana eliphakathi 220–250 μm): umgangatho ongcono womphezulu kunye nokusetyenziswa okuphantsi kwesibophelelo
Umgubo ococekileyo (ngaphantsi kwe-200 mesh) umxholo ≤2%: unokunciphisa inani le-binder
Umxholo wodaka (umxholo we-particle ngaphantsi kwe-0.02mm) ≤0.5%: unokunciphisa inani le-binder
Ukusabalalisa ubungakanani be-particle: I-95% yesanti igxininiswe kwi-4th okanye i-5th sieve: kulula ukudibanisa kunye nokunciphisa iziphene zokuvuvukala.
Ukungena komoya kwisanti eyomileyo: 100-150: ukunciphisa iziphene zepore
Isanti yeCeramic, ngenxa yobume bamasuntswana aphantse angqukuva, i-fluidity egqwesileyo, ukufikeleleka komoya okuphezulu, kunye neempawu zokuhanjiswa kobungakanani bamasuntswana abanzi kunye nokudibanisa umnatha omnye kwinkqubo yokuvelisa, ekusebenzeni kokuphosa, ukongeza ekulandeleni ezi mpawu ziqhelekileyo zingasentla, kukho iimpawu zayo ezikhethekileyo zokuhlela ziyenza ikhululeke kulwahlulo kunye nokwahlulwa ngexesha lokuthuthwa kunye nokuhamba; inamandla amahle amanzi ekusebenziseni isanti eluhlaza kunye nesanti ye-resin engabhaki. Kwinkqubo yokuphosa isanti usebenzisa i-binders, ukusetyenziswa kwe-multi-sieve distribution yenza amaqhekeza amancinci azalise izikhewu phakathi kwamaqhekeza amakhulu kunye nokudibanisa omnye nomnye, ukwandisa "ibhuloho yokudibanisa" ye-binder, ngaloo ndlela kuphuculwe amandla ebhondi engundoqo, njl. Yindlela esebenzayo.
Ukushwankathela ukusetyenziswa kwesanti ye-ceramic iminyaka engaphezu kwama-20, iimfuno zobungakanani besuntswana kunye nokuhanjiswa kwesanti ye-ceramic esetyenziswa kwiinkqubo ezahlukeneyo zokuphosa zidweliswe ngolu hlobo lulandelayo:
● I-RCS (iSanti yeCeramic eneResin Coated)
Amaxabiso e-AFS e-50-70, 70-90, kunye ne-90-110 onke asetyenziswa, asasazwa kwi-4 okanye i-5 sieves, kwaye i-concentration ingaphezulu kwe-85%;
● Isanti yeresin yokungabhaki
(Kubandakanya i-furan, i-alkali phenolic, i-PEP, i-Bonnie, njl.): I-AFS 30-65 isetyenzisiweyo, i-4 sieves okanye i-5 sieves distribution, i-concentration ingaphezulu kwe-80%;
● Inkqubo ye-Foam elahlekileyo / i-Lost Weight Foundry Process
I-10/20 mesh kunye ne-20/30 ye-mesh isetyenziswa ngokuqhelekileyo, enokuthi iphucule ukunyanzeliswa komoya, iqinisekise izinga lokuphinda lisetyenziswe isanti ye-ceramic emva kokuthulula, kunye nokunciphisa ukusetyenziswa;
● Inkqubo yeSanti yeBhokisi ebandayo
I-AFS 40-60 isetyenziswa ngokuqhelekileyo, ihanjiswa nge-4 okanye i-5 sieves, kwaye i-concentration ingaphezulu kwe-85%;
● Ushicilelo lweSanti lwe-3D
Ii-sieves ezi-2 zisasazwa, ukuya kuthi ga kwi-3, kunye ne-concentration engaphezu kwe-90%, iqinisekisa ubuninzi besanti efanayo. I-fineness ephakathi isasazwa ngokubanzi ngokweendlela ezahlukeneyo zokusetyenziswa
Ixesha lokuposa: Mar-27-2023
