Njengenye yeendawo eziphambili ze-injini, i-crankshaft ithwala isenzo esidibeneyo sokuguqa kunye nokutshintsha imithwalo ye-torsional ngexesha lokuhamba. Ngokukodwa, i-fillet yenguqu phakathi kwejenali kunye ne-crank inoxinzelelo olukhulu olutshintshanayo, kwaye indawo ye-crankshaft fillet ihlala ibangela ukuba i-crankshaft yophuke ngenxa yoxinzelelo oluphezulu. Ke ngoko, kuyilo lwe-crankshaft kunye nenkqubo yokuvelisa, kuyafuneka ukomeleza indawo yefillet ye-crankshaft ukuphucula ukusebenza ngokubanzi kwe-crankshaft. Ukuqiniswa kwefillet yeCrankshaft ngokuqhelekileyo kuthatha ukuqina kwe-induction, unyango lwe-nitriding, i-fillet shot peening, i-fillet rolling kunye nomothuko we-laser.

Ukudubula kwe-shot kusetyenziselwa ukususa isikali se-oxide, i-rust, isanti kunye nefilimu yepeyinti endala kwiimveliso zetsimbi eziphakathi kunye ezinkulu kunye ne-castings ezinobunzima obungekho ngaphantsi kwe-2mm okanye ayifuni imilinganiselo echanekileyo kunye neekhonto. Yindlela yokucoca phambi kokugquma komhlaba. Ukuchama ngokudubula kukwabizwa ngokuba kukuchama, enye yeendlela ezisebenzayo zokunciphisa ukudinwa kwamalungu kunye nokwandisa ixesha lokuphila.

Ukuchama ngeembumbulu kwahlulwe kwaba kukukroba okudutyulwa kunye nokuqhushumba kwesanti. Ukusebenzisa ukudubula ukudubula kunyango lomphezulu, amandla empembelelo makhulu, kwaye umphumo wokucoca uyabonakala. Nangona kunjalo, ukunyangwa kweepleyiti ezicekethekileyo zokusebenza ngokukrola kunokuguqula ngokulula i-workpiece, kwaye isithonga sentsimbi sibethe umphezulu wesixhobo sokusebenza (nokuba sidutyulwe ngokuqhushumba okanye sikrobile) ukukhubaza isiseko sesinyithi. Ngenxa yokuba i-Fe3O4 kunye ne-Fe2O3 ayinayo i-plasticity, i-peel off emva kokuphulwa, kwaye ifilimu yeoli yi-Isiseko sezinto eziphazamisayo ngexesha elifanayo, ngoko ukudubula kwe-shot blasting kunye ne-shot blasting ayikwazi ukususa ngokupheleleyo i-oil stains kwi-workpiece ene-oil stains. Phakathi kweendlela ezikhoyo zonyango lweendawo zokusebenza, eyona nto ingcono yokucoca i-sandblasting.