Ntchito: Pamene kusintha kolowera kumasunga stabler linanena bungwe rotational speed.Products amapangidwa apamwamba aloyi zitsulo kupanga.Ma mbale amakhomeredwa ndi kufinyidwa mabowo ndi ukadaulo wolondola.Pini, chitsamba, wodzigudubuza amapangidwa ndi zida zapamwamba zodziwikiratu ndi zida zogaya zodziwikiratu, ndiye kudzera muzakudya zotentha za carburization, ng'anjo ya kaboni ndi nayitrogeni yoteteza mauna, njira yophulitsira pamwamba etc.