Iimpahla ezinkulu, ngenxa yobukhulu babo, iinkqubo ezininzi, umjikelo omde, non-uniformity kwinkqubo, kunye nezinto ezininzi ezingazinzanga, ngokufuthi kubangela non-uniformity enzulu kwi-microstructure, ukuze bangakwazi ukuphumelela uvavanyo lwepropati mechanical, ukuhlolwa metallographic kunye non- ukufumanisa iziphene ezonakalisayo.

Ngenxa yokwahlula ukubunjwa kweekhemikhali, ukuqokelela ukubandakanywa kunye neziphene ezahlukeneyo ze-pore kwi-ingot;
Xa ukufudumala, ubushushu buguquka ngokukhawuleza, ukusabalalisa akulingani, uxinzelelo lwangaphakathi lukhulu, i-defect ininzi;
Ukushisa okuphezulu kunye nexesha elide lokubumba, uxinzelelo lwengingqi kunye nokuguqulwa kwendawo, isimo sokuhamba kweplastiki, iqondo lokuxinana, ukusabalalisa i-deformation kuhluke kakhulu;
Ngexesha lokupholisa, inkqubo yokusabalalisa iyancipha, ukuguqulwa kwezicubu kuyinkimbinkimbi kwaye uxinzelelo olongezelelweyo lukhulu.
Zonke ezi zinto zingasentla zinokukhokelela kwi-inhomogeneity enzulu yokusebenza kwezicubu kunye nomgangatho ongafanelekanga.
Amanyathelo okuphucula ukufana kweiifolishi ezinkulu:
1. Yamkela itekhnoloji yokunyibilikisa ephucukileyo ukuphucula umgangatho we-metallurgical we-ingot yentsimbi;
2. Ukulawula ukunyanzeliswa kwe-adopt, ukulawula iteknoloji yokupholisa, ukwandisa inkqubo yezobuchwepheshe, kunye nokuphucula umgangatho wobugcisa kunye noqoqosho lwemveliso enkulu yokubumba.