NACE MR0175 yog dab tsi?

NACE MR0175, tseem hu ua "Standard Material Requirements for Resistance to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments," yog tus qauv tsim los ntawm National Association of Corrosion Engineers (NACE) los daws qhov teeb meem ntawm sulfide kev nyuaj siab tawg hauv cov roj thiab gas kev lag luam. Cov qauv no muab cov lus qhia rau kev xaiv thiab kev tsim nyog ntawm cov khoom siv hauv cov cuab yeej siv thiab cov khoom siv uas yuav raug cuam tshuam rau ib puag ncig corrosive hauv kev ua haujlwm roj av.

Sulfide stress cracking (SSC) yog ib daim ntawv ntawm hydrogen-induced cracking uas tshwm sim hauv hlau thiab lwm yam alloys thaum lawv raug hydrogen sulfide (H2S) thiab kev ntxhov siab. Hom kev tawg no tuaj yeem ua rau muaj kev puas tsuaj loj ntawm cov khoom siv thiab ua rau muaj kev nyab xeeb loj thiab ib puag ncig txaus ntshai hauv kev ua haujlwm roj av. NACE MR0175 tau tsim los txo cov kev pheej hmoo ntawm SSC los ntawm kev muab cov cai rau kev xaiv thiab tsim nyog ntawm cov ntaub ntawv uas tiv taus sulfide kev nyuaj siab tawg.

Cov txheej txheem npog ntau yam ntaub ntawv, suav nrog cov pa roj carbon thiab cov hlau tsis tshua muaj hlau, cov hlau tsis muaj steel, cov nickel alloys, thiab lwm yam corrosion-resistant alloys. Nws muab cov lus qhia rau kev xaiv cov khoom siv, kev kho cua sov, kev txwv hardness, thiab kev sim ntsuas kom ntseeg tau tias cov ntaub ntawv siv hauv roj av refining ua haujlwm tiv taus sulfide kev nyuaj siab tawg.

Ib qho tseem ceeb ntawm NACE MR0175 yog qhov tsim nyog ntawm cov ntaub ntawv los ntawm kev sim thiab cov ntaub ntawv. Tus txheej txheem qhia txog cov kev ntsuas tshwj xeeb, xws li kev sim hardness, tensile testing, thiab sulfide stress cracking testing, ua kom pom kev tsis kam ntawm cov khoom rau sulfide kev nyuaj siab tawg. Tsis tas li ntawd, tus qauv xav kom cov tuam txhab muab cov ntaub ntawv, xws li cov ntaub ntawv xeem cov ntaub ntawv thiab cov ntawv pov thawj ua raws, los xyuas kom meej tias cov ntaub ntawv ua tau raws li cov kev cai ntawm NACE MR0175.

NACE MR0175 tseem muab cov lus qhia rau kev tsim thiab tsim cov khoom siv thiab cov khoom siv kom txo tau qhov kev pheej hmoo ntawm sulfide kev nyuaj siab tawg. Qhov no suav nrog cov lus pom zoo rau cov txheej txheem vuam, kev kho saum npoo, thiab lwm yam kev ntsuas los tiv thaiv hydrogen-induced cracking hauv thaj teb.

Kev ua raws li NACE MR0175 yog qhov tseem ceeb rau kev ua kom muaj kev ncaj ncees thiab kev ntseeg siab ntawm cov khoom siv thiab cov khoom siv hauv kev ua haujlwm roj av. Los ntawm kev xaiv thiab tsim nyog cov ntaub ntawv raws li tus qauv, cov neeg ua haujlwm tuaj yeem txo qhov kev pheej hmoo ntawm sulfide kev ntxhov siab tawg thiab ua kom muaj kev nyab xeeb thiab ua haujlwm ntawm lawv cov chaw.

Hauv kev xaus, NACE MR0175 yog tus qauv tseem ceeb rau kev lag luam roj thiab roj, muab cov lus qhia rau kev xaiv thiab kev tsim nyog ntawm cov ntaub ntawv uas tiv taus sulfide kev ntxhov siab tawg hauv corrosive petroleum refining ib puag ncig. Los ntawm kev ua raws li cov cai ntawm tus qauv no, cov neeg ua haujlwm tuaj yeem txo qhov kev pheej hmoo ntawm sulfide kev ntxhov siab tawg thiab ua kom muaj kev ncaj ncees thiab kev ntseeg siab ntawm lawv cov cuab yeej thiab cov khoom. Kev ua raws li NACE MR0175 yog qhov tseem ceeb rau kev tswj xyuas kev nyab xeeb thiab kev ua haujlwm ntawm cov roj av refining.

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