Feem ntau siv nyob rau hauv kev lag luam steel, as opposed to kub dov kauj.Nws hais txog cov hlau sawb uas yog dov rau hauv ib qho tuab ncaj qha los ntawm yob thiab dov mus rau hauv ib lub yob tag nrho los ntawm ib lub winder ntawm qhov kub thiab txias.Piv nrog kub dov coil, txias dov coil nto ci, siab tiav, tab sis yuav ua rau muaj kev ntxhov siab ntau dua, feem ntau tom qab txias dov annealing kho.
Vim tias tsis muaj cua sov hauv cov txheej txheem tsim khoom, tsis muaj pitting thiab oxide daim ntawv tsis xws luag uas feem ntau tshwm sim hauv kub dov, thiab qhov zoo ntawm qhov chaw yog qhov zoo thiab qhov ua tiav siab.Ntxiv mus, qhov ntev precision ntawm cov khoom txias-kuav los tiag yog siab, thiab cov khoom thiab lub koom haum ntawm cov khoom tuaj yeem ua tau raws li qee qhov tshwj xeeb, xws li cov khoom siv hluav taws xob, cov khoom sib sib zog nqus, thiab lwm yam.