Monga imodzi mwamagawo ofunikira a injini, crankshaft imakhala ndi ntchito yophatikizika yopindika ndikusinthana zolemetsa panthawi yoyenda. Makamaka, kusintha kwa fillet pakati pa magazini ndi crank kumakhala ndi kupsinjika kwakukulu kosinthana, ndipo malo a crankshaft fillet nthawi zambiri amachititsa kuti crankshaft ithyoke chifukwa cha kupsinjika kwakukulu. Chifukwa chake, pamapangidwe a crankshaft ndi kupanga, ndikofunikira kulimbikitsa fillet ya crankshaft kuti muwongolere magwiridwe antchito onse a crankshaft. Kulimbitsa minofu ya Crankshaft nthawi zambiri kumatenga kuuma kwa induction, chithandizo cha nitriding, kuwomba kwa fillet, kupindika kwa minofu ndi kugwedezeka kwa laser.

Kuwombera kuwombera kumagwiritsidwa ntchito kuchotsa oxide sikelo, dzimbiri, mchenga ndi filimu yakale ya utoto pazitsulo zapakatikati ndi zazikulu ndi zoponyera zomwe zimakhala ndi makulidwe osachepera 2mm kapena safuna miyeso yolondola ndi mizere. Ndi njira yoyeretsera pamaso pa zokutira pamwamba. Kuwombera kumatchedwanso kuwomberedwa, yomwe ndi imodzi mwa njira zothandiza kuchepetsa kutopa kwa ziwalo ndikuwonjezera moyo wautali.

Kuwombera kuwombera kumagawidwa mukuwombera ndi kuwomba mchenga. Pogwiritsa ntchito kuphulika kwa mfuti pochiza pamwamba, mphamvu yowonongeka ndi yaikulu, ndipo kuyeretsa kumaonekera. Komabe, mankhwala a woonda mbale workpieces ndi kuwombera peening mosavuta deform workpiece, ndi kuwombera zitsulo kugunda padziko workpiece (kaya kuwombera kuphulika kapena kuwombera peening) kuti deform zitsulo gawo lapansi. Chifukwa Fe3O4 ndi Fe2O3 alibe pulasitiki, amasenda atasweka, ndipo filimu yamafuta ndi The base material deforms pa nthawi yomweyo, kotero kuwombera ndi kuwombera kuwombera sikungathe kuchotseratu madontho a mafuta pa ntchito ndi madontho a mafuta. Mwa njira zomwe zilipo kale zochizira zogwirira ntchito, njira yabwino yoyeretsera ndi sandblasting.