1. Burrs: Cov khoom seem tsis yog tag nrho thaum lub sij hawm stamping los yog kaum txiav txheej txheem, thiab burrs yog tsim nyob rau hauv lub txiav nto ntawm steel phaj raws li qhov chaw txiav, thaum qhov siab ntawm burrs tshaj 0. .2 hli, hlau yog tsim. cov hmoov yuav puas pwm thiab ua bulging thiab indentation.
2. Bulges thiab dents. Cov kab mob txawv txav lossis kev nyuaj siab ntawm cov khoom siv yog tshwm sim los ntawm cov khoom txawv teb chaws (hlau filings, plua plav) nkag mus rau hauv cov hlau tsis huv.
3. Roller mark: tshwm sim los ntawm cov khoom txawv teb chaws uas txuas nrog rau kev ntxuav lossis pub rau cov menyuam (tshwj xeeb ntawm qhov chaw ruaj khov).
4. Cov qhab nias: Cov no yog tshwm sim los ntawm zawv zawg rollers thiab tshwm sim thaum nres lossis nrawm.
5. Cov khoom siv yob yog crushed los yog cov npoo yog wrinkled: Cov unwinding kab qhia cov menyuam los yog cov kev taw qhia rau cov menyuam qhov sib txawv ntawm cov pwm yog me me, uas yog tshwm sim los ntawm unbalanced noj ntawm cov yob cov khoom.
6. Kev khawb: Qhov laj thawj tseem ceeb ntawm kev khawb ntawm qhov chaw yog khawb ntawm cov pwm lossis hlau plua plav nkag mus rau hauv pwm Cov kev tiv thaiv muaj xws li xuab zeb khawb ntawm cov pwm thiab tshem tawm cov plua plav hlau.
7. Kev tawg hauv qab: Qhov laj thawj tseem ceeb ntawm kev tawg ntawm qhov hauv qab ntawm ib feem yog qhov tsis zoo ntawm cov khoom siv los yog nias lub pwm ntsaws ruaj khov heev, kev tiv thaiv kev tiv thaiv muaj xws li hloov cov khoom siv nrog cov hlua txuas ntxiv los yog xoob lub ntsaws.
8. Sidewall Wrinkles: Lub ntsiab ua rau ntawm phab ntsa wrinkles ntawm ib feem yog tias cov khoom tsis tuab txaus (thinner dua li qhov tsawg kawg nkaus tso cai thickness) los yog cov pwm sab saum toj thiab hauv qab yog ntsia eccentrically, ua rau muaj qhov sib txawv loj ntawm ib sab thiab ib qho. Qhov sib txawv me me ntawm lwm qhov kev tiv thaiv muaj xws li kev hloov cov khoom tam sim thiab kev hloov pwm.