Associação Nacional de Engenheiros de Corrosão (NACE), tsim los ntawm 11 anti-corrosion engineers los ntawm industrial ducts nyob rau hauv 1943, thiab thaum lub sij hawm, yog lub koom haum loj tshaj plaws rau kev tshaj tawm txog kev paub txog kev tiv thaiv corrosion los txhim kho lawv cov kev tiv thaiv corrosion.
MR0175 / ISO 15156 tau yug los nrog lub hom phiaj ntawm kev tsim cov kev cai, cov lus qhia thiab cov kev xav tau los xaiv cov ntaub ntawv zoo, uas yog siv rau hauv cov khoom siv hauv kev tsim cov roj thiab roj, thiab cov nroj tsuag uas tsis yog-natural gas sweening hauv H2S. Qhov twg cov cuab yeej no tsis tuaj yeem taug qab qhov kev pheej hmoo rau tib neeg kev noj qab haus huv thiab kev nyab xeeb, thiab kev puas tsuaj rau ib puag ncig.
Hauv NACE cov qauv, MR0175 yog tus qauv ntawm cov khoom xav tau rau H2S uas muaj cov roj thiab roj ntau lawm thiab cov khoom siv carbon-carbon, cov raj thiab cov khoom siv ntawm cov khoom siv hauv kev lag luam roj, feem ntau, muaj cov pa roj carbon tsawg dua 0.8 feem pua. .
Yog li ntawd, Nace raj siv nyob rau hauv H2S uas muaj roj thiab roj thauj pab koomtes ntawm kev xaiv, nws yog tib lub web-based software rau xaiv cov khoom siv roj thiab roj thiab tau tsim los ntawm pab pawg kws tshaj lij hauv Petroleum & Gas Corrosion.
Cov pa roj carbon monoxide thiab qib qis xyoo suav nrog phaj, raj, raj siv raws li NACE MR0175, nthuav qhia tshwj xeeb, ntxiv rau SSC (lossis tsis tas yuav tsum xeem). Txawm li cas los xij, ib qho kev xeem SSC uas yog ib feem ntawm ob qho kev tsim khoom tshwj xeeb yuav tsum tau ua tiav nrog kev ua tiav thiab cov txiaj ntsig tau nthuav tawm.
Cov pa roj carbon thiab hlau, cov raj thiab cov khoom siv tau piav qhia saum toj no tau teev tseg NACE MR0175 (tag nrho cov qauv) cov ntaub ntawv txheeb xyuas los ntawm kev sib raug zoo ntawm kev ua tau zoo / cov xwm txheej thiab cov ntaub ntawv kuaj.
Lub hardness txwv ntawm CDH 22 siv rau ntau cov pa roj carbon thiab cov qib qis alloys yog raws li kev sib raug zoo ntawm kev kho cua sov, tshuaj muaj pes tsawg leeg, hardness thiab tsis muaj kev paub. Kev txwv hardness siab dua rau chrome-molybdenum alloys yog raws li kev xav zoo sib xws.
Cim npe nrov: yug tubs, tsum, kev cai, lag luam wholesale, pheej yig, luv nqi, pricelist, luv nqi, Tshuag, dawb qauv
