E le e 'ngoe ea likarolo tsa bohlokoa tsa enjene, crankshaft e na le ts'ebetso e kopaneng ea ho kobeha le ho fapanyetsana meroalo ea torsional nakong ea motsamao. Haholo-holo, fillet ea phetoho lipakeng tsa jenale le crank e na le khatello e matla ka ho fetesisa, 'me boemo ba fillet ea crankshaft hangata bo etsa hore crankshaft e robehe ka lebaka la khatello e matla ea khatello ea maikutlo. Ka hona, moralong le ts'ebetsong ea tlhahiso ea crankshaft, hoa hlokahala ho matlafatsa boemo ba crankshaft fillet ho ntlafatsa ts'ebetso ea kakaretso ea crankshaft. Ho matlafatsa li-fillet tsa Crankshaft hangata ho nka ho thatafala ha induction, kalafo ea nitriding, fillet shot peening, fillet rolling le laser shock.

Ho phatloha ho sebelisoa ho tlosa oxide scale, mafome, lehlabathe le filimi ea khale ea pente holim'a lihlahisoa tsa tšepe tse mahareng le tse kholo le li-castings tse nang le botenya bo ka tlase ho 2mm kapa tse sa hlokeng litekanyo tse nepahetseng le li-contours. Ke mokhoa oa ho hloekisa pele ho roala holim'a metsi. Ho phunya ho boetse ho bitsoa "shot peening", e leng o mong oa mekhoa e sebetsang ea ho fokotsa mokhathala oa likarolo le ho eketsa nako ea bophelo.

Ho phunya ho arotsoe ka ho pening le ho phatloha ha lehlabathe. Ho sebelisa ho phatloha ha sethunya bakeng sa phekolo ea holim'a metsi, matla a ts'usumetso a maholo, 'me phello ea ho hloekisa e hlakile. Leha ho le joalo, ho phekoloa ha workpieces tšesaane poleiti ka ho thunngoa peening ka habonolo deform workpiece, le tšepe thunngoa otla holim 'a workpiece (ebang ke thunya blasting kapa thunya peening) ho deform tšepe substrate. Hobane Fe3O4 le Fe2O3 ha li na polasetiki, li ebola ka mor'a hore li robehe, 'me filimi ea oli ke The base material deforms ka nako e le' ngoe, kahoo ho thunngoa ha ho thunngoa le ho thunngoa ho ke ke ha tlosa ka ho feletseng matheba a oli mosebetsing o nang le matheba a oli. Har'a mekhoa e teng ea kalafo ea holim'a metsi bakeng sa li-workpieces, phello e ntle ka ho fetisisa ea ho hloekisa ke sandblasting.