Txhais:

Cov kev pabcuam qaub steel yeeb nkab yog siv rau cov kav dej hauv qhov chaw corrosive.

Nws yuav ua rau cov roj thiab cov kav dej xau, qee kis txawm tias tawg.Cov yeeb nkab corrosion muaj qhov cuam tshuam loj rau kev nyab xeeb ntawm tus kheej thiab ib puag ncig muaj kuab paug, yog li kev tsim cov kav dej qaub yog qhov tseem ceeb.

Cov kav dej qaub tau siv rau hauv H2S ib puag ncig.Thaum H2S yog cov tshuaj phem uas feem ntau yooj yim los tsim cov corrosion.

Thaum ib nrab siab ntawm H2S nce mus txog 300 pa, cov kav dej siv yuav tsum muaj cov tshuaj tiv thaiv acid corrosion.Sour cov yeeb nkab muaj xws li NACE yeeb nkab.

Yuav ua li cas qaub qhov kev pab cuam yeeb nkab ua:

API Spec 5L, cov yeeb nkab steel siv rau cov kav dej qaub yog purity tag nrho-tua hlau.

Nws yuav tsum raug sau tseg tias, lub siab purity ntawm hlau tuaj yeem lav qis S, P thiab lwm yam impurities.

Tus txheej txheem rau kev tswj thiab tshuaj xyuas ntawm kev suav nrog cov yeeb nkab steel rau cov kav dej qaub yog xav tau vim tias hydrogen induced cracking los ntawm kev suav nrog yog thawj zaug txiav txim hauv nws daim ntawv.

Chemical Properties:

Cov ntsiab lus ntawm C, P, S thiab carbon sib npaug hauv cov tshuaj muaj pes tsawg leeg ntawm cov kav dej qaub yog qhov qis dua li cov kav dej ib txwm muaj, nrog rau kev tswj hwm nruj.

Tshwj xeeb tshaj yog rau cov ntsiab lus S, nws yog ib qho teeb meem tsis zoo nyob rau hauv cov cheeb tsam corrosion, yog li rau cov kav dej qaub yuav tsum tswj S siab tshaj 0.002.