Impembelelo kubomi bokubumba

(1) Ukujonga indlela yokhokelo ekubumbeni. Ukukhokela ngokuchanekileyo nangokuthembekileyo, ukunciphisa ukunxiba kweenxalenye zomsebenzi wokubumba, ukunqande iimpembelelo zezinto ekubunjweni kuzo kunye ne-concave, ngakumbi umsantsa kunye nokushiya isikhewu esishiyayo sisifa, umdibaniso uyafa kunye nokufa okuninzi kwesikhululo okusebenzayo kusebenza ngakumbi. Ukuze uphucule ubomi bokubumba, uyilo malusekwe kuhlobo lwenkqubo kunye nokuchaneka kwamacandelo, ukhetho oluchanekileyo lwefomu olukhokelayo kunye nokuchaneka kwendlela ekhokelayo.

(2) Iiparameter zejometri zokusweleka (i-convex, concave die). Ubume be-convex kunye ne-concave molds, ukucaca okufanelekileyo kunye nerediyo ye-fillet ayisiyiyo impembelelo enkulu ekwakhiweni kwenxalenye yokubumba, kodwa ikwanegalelo elihle ekubambeni nasebomini bokubumba. Umzekelo, ukucaciswa ngokuthe ngqo kokubumba kuchaphazela ngqo umgangatho wokungabinanto kunye nobomi besibumba. Ngeemfuno zokuchaneka okuphezulu, ixabiso elincinci lomngcipheko kufuneka likhethwe kuyilo; ngaphandle koko, isikhewu singandiswa ngokufanelekileyo ukuphucula ubomi besibumba.