Tam sim no, ntau lub tuam txhab muab kauv steel raj tsim cov kav dej uas tsis ua tau raws li tus qauv txheej txheem txawm hais tias cov khoom siv txuas ntxiv ntawm cov kav raj. Cia peb delve rau hauv qhov tshwj xeeb qhov yuav tsum tau rau cov kav dej no.
Txawm hais tias cov qauv qhia tias "sov saum npoo" rau kauv steel hlab, ntau yam tuaj yeem ua rau muaj teeb meem ntau dua li ntawm lub sijhawm tsim khoom. Cov teeb meem no feem ntau suav nrog: kab nrib pleb, kab plaub hau, sab hauv thiab sab nraud folds, yob-tawg, sab hauv thiab sab nraud ncaj kab, delamination, nti, qhov (pockmarks), khawb, sab hauv thiab sab nraud kauv cov cim, kab xiav, kho kev nyuaj siab, cov menyuam cov cim, lwm.
Ntawm cov teeb meem saum toj no, qee qhov ua rau muaj kev pheej hmoo loj rau cov ntsuas kev ua tau zoo ntawm cov kav hlau raj thiab suav tias yog cov teeb meem tseem ceeb, xws li tawg, sab hauv thiab sab nraud, dov-so, delamination, nti, dents, thiab bulges. Lwm qhov teeb meem muaj feem cuam tshuam me me rau cov kav dej kev ua tau zoo thiab raug cais raws li cov teeb meem ib txwm muaj, suav nrog pockmarks, kab xiav, khawb, me ntsis sab hauv thiab sab nraud ncaj / kauv cov cim, kho kev nyuaj siab, thiab cov cim rau cov menyuam.
Txawm hais tias qee qhov teeb meem me me uas tsis muaj kev cuam tshuam rau qhov kev siv ntawm cov kav raj xaim tuaj yeem raug zam, cov qauv txwv nruj rau qhov tob thiab ntev (loj) ntawm cov teeb meem no.
Rau cov teeb meem tseem ceeb ntawm cov kav raj, cov txheej txheem xws li txiav lossis sib tsoo yog ua haujlwm kom tshem tawm lawv tag nrho. Thaum kev sib tsoo ua tiav ntawm cov kav dej uas tau tso cai, qhov tob ntawm thaj chaw hauv av thiab cov duab ntawm cov ntsiab lus sib tsoo yuav tsum ua raws li cov qauv nruj me ntsis. Txhawm rau txhim kho qhov zoo ntawm cov kav raj, cov txheej txheem xws li txhaj tshuaj blasting (los yog sandblasting), xuab zeb, los yog machining kuj yuav raug siv rau sab hauv thiab sab nrauv ntawm cov hlab.
