Pamwamba pa eccentric kubala dzimbiri pretreatment njira: pamwamba youma: woyera woyera angagwiritsidwe ntchito fyuluta mpweya wopanikiza, kapena ndi chowumitsira pa 120 ~ 170 °c kutentha, ndipo potsiriza ziume ndi yopyapyala nsalu yopyapyala.KUYERETSA KWA PANSI: kuyeretsa kuyenera kuphatikizidwa ndi chikhalidwe cha malo onyamula komanso momwe zinthu zilili panthawiyo.Njira zomwe zimagwiritsidwa ntchito kwambiri ndi monga kuyeretsa zosungunulira, kuyeretsa makina ndi kuyeretsa mankhwala.Eccentric kubala dzimbiri amayamba chifukwa cha zinthu zosiyanasiyana mkati ndi kunja, mwachidule motere: 1. Metal Surface kumaliza.2. Mitundu yosiyanasiyana yazachilengedwe yokhudzana ndi zitsulo komanso kapangidwe kake ndi pH ya yankho pokhudzana ndi pamwamba;