Ekuqaleni i-blush, ukuqina kunye nokuqina kunokubonakala ngathi ziingqikelelo ezinokutshintshana, kodwa zikhona kwiziphelo ezichaseneyo zokuqhubeka ezichaza ukufaka isalathisi kunye nokusebenza kwesixhobo esiqinileyo sokusika, ngakumbi xa kufikwa kwi-carbide. Ukufakwa okunzima kunika ukuxhathisa okukhulu ekusebenzeni okuphuculweyo kunye nobomi besixhobo kwindawo yokusika eshushu kunokufaka izinto ezithambileyo, kodwa ukufaka okunzima kunokumelana neempembelelo kunye noxinzelelo lokufikelela kumazinga aphezulu okutya kunye nee-DOCs.

Kuso nasiphi na isicelo esinikiweyo, kukho ibhalansi efanelekileyo yobunzima kunye nokuqina - kunye nabenzi bezixhobo baye basebenza ngokunyanisekileyo ukuseka imigaqo ye-metallurgical kunye nokubonelela ngoluhlu lwezixhobo ezinokuhlangabezana neemfuno ezahlukeneyo zabenzi becandelo.

Ubunzima bumele ukuxhatshazwa kokugqoka, okuguqulela kwikhono lesixhobo sokumelana nobushushu ngexesha le-metalcutting. I-Rockwell A isikali ilinganisa ubulukhuni be-tungsten carbide, nangona ezinye iinkcukacha ziguqulela amaxabiso e-HRA kwisikali esiqhelekileyo se-HRC esisetyenziselwa ukulinganisa ubulukhuni bentsimbi kunye nezinye i-alloys. Ukumelana nobushushu obuhambelana nobunzima budlala indima enkulu ekusikeni ukuziphatha kwesixhobo kunye nokukhetha.