Kukangana mukupangandi kukangana pakati pa zitsulo ziwiri zosiyana ndi katundu (aloyi), pakati pa zitsulo zofewa (workpiece) ndi zitsulo zolimba (kufa). Pankhani ya palibe kondomu, ndi kukhudzana mikangano ya mitundu iwiri ya zitsulo pamwamba okusayidi filimu; Pansi pa chikhalidwe kondomu, kukhudzana kukangana pakati pa filimu okusayidi pa zitsulo ziwiri pamwamba ndi sing'anga mafuta motsatana, ndi kukangana pakati pa pamwamba wosanjikiza wa workpiece, amene sanakhale oxidized ndipo ali ndi adsorption mphamvu yaikulu. ndipo kukangana pakati pa sing'anga yopaka mafuta ndi pamwamba pa kufa ndi malo enieni (olumikizana) akuwonjezeka.

Chifukwa cha mikangano mikhalidwe pakati akusowekapo ndi kufa kukhudzana pamwamba mukukonza ndondomeko, zotsatira zotsatirazi zidzakhala:
(1) Mphamvu yosinthika imawonjezeka ndi 10% chifukwa cha kukangana, ndipo kugwiritsa ntchito mphamvu kumawonjezeka motere;
(2) kukangana kumabweretsa mapindikidwe osagwirizana a forgings, kotero kuti kapangidwe ka mkati mwa tirigu ndi ntchito sizikhala yunifolomu, ndipo mawonekedwe apamwamba amachepetsa;
(3) kukangana kumabweretsa kuchepetsedwa kwa mawonekedwe a geometric ndi kulondola kwapang'onopang'ono kwa forgings, zomwe zimatsogolera ku zinyalala za forgings pamene zojambulajambula sizidzadzaza kwambiri;
(4) kukangana kumabweretsa kuwonjezereka kwa kufa ndikufupikitsa moyo wake;
(5) Kuchulukitsa kukana kwapang'onopang'ono kwapabowo kumapangitsa kuti patsekeke yomwe imakhala yovuta kudzaza zitsulo bwino ndikuchepetsa kukana.
Zitha kuwoneka kuti kukangana ndi lupanga lakuthwa konsekonse m'thupikupanga kupanga, yomwe ili ndi ubwino ndi kuipa kwake. Chifukwa chake, kukangana pakupangira kuyenera kuyendetsedwa mosamalitsa kuti kuwonetsetse kuti njira yamba.