Kuzimitsa mafuta a vacuum ndikuwotcha chogwiritsira ntchito mu chipinda chotenthetsera chowumitsa ndikuchisunthira ku thanki yamafuta.Njira yozimitsira ndi mafuta.Mafuta ozimitsira mu thanki yamafuta amagwedezeka mwamphamvu kuti aziziziritsa chogwirira ntchito mwachangu.
Mtunduwu uli ndi zabwino zomwe zopangira zowoneka bwino zitha kupezeka kudzera pakuzimitsa mafuta a vacuum, okhala ndi mawonekedwe abwino komanso magwiridwe antchito, osatulutsa oxidation ndi decarburization pamtunda.Kuzizira kwa kuzimitsa mafuta kumathamanga kwambiri kuposa kuzimitsa gasi.
Vacuum mafuta makamaka ntchito quenching mu zingalowe mafuta sing'anga aloyi structural zitsulo, kubala zitsulo, masika zitsulo, kufa chitsulo, mkulu-liwiro zitsulo ndi zipangizo zina.