NACE MR0175 yog dab tsi?

NACE MR0175, tseem hu ua "Cov Khoom Siv Txheem rau Kev Tiv Thaiv Sulfide Stress Cracking hauv Corrosive Petroleum Refining Environments," yog tus qauv tsim los ntawm National Association of Corrosion Engineers (NACE) los daws qhov teeb meem ntawm sulfide stress cracking hauv kev lag luam roj thiab roj. Tus qauv no muab cov lus qhia rau kev xaiv thiab kev tsim nyog ntawm cov ntaub ntawv siv hauv cov khoom siv thiab cov khoom uas yuav raug rau cov chaw corrosive hauv kev ua haujlwm refining roj.

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

Tus qauv no suav nrog ntau yam khoom siv, suav nrog cov hlau carbon thiab cov hlau tsis muaj zog, cov hlau tsis xeb, cov hlau nickel, thiab lwm yam hlau uas tiv taus xeb. Nws muab cov lus qhia rau kev xaiv cov khoom siv, kev kho cua sov, kev txwv qhov nyuaj, thiab kev kuaj xyuas kom ntseeg tau tias cov khoom siv siv hauv kev ua haujlwm roj av tiv taus kev tawg ntawm sulfide.

Ib qho ntawm cov ntsiab lus tseem ceeb ntawm NACE MR0175 yog kev tsim nyog ntawm cov ntaub ntawv los ntawm kev sim thiab kev sau ntawv. Tus qauv qhia txog cov kev cai tshwj xeeb ntawm kev sim, xws li kev sim hardness, kev sim tensile, thiab kev sim sulfide stress cracking, los qhia txog kev tiv thaiv ntawm cov ntaub ntawv rau sulfide stress cracking. Tsis tas li ntawd, tus qauv xav kom cov chaw tsim khoom muab cov ntaub ntawv, xws li cov ntawv qhia txog kev sim khoom thiab daim ntawv pov thawj ua raws li txoj cai, los xyuas kom meej tias cov ntaub ntawv ua tau raws li cov kev cai ntawm NACE MR0175.

NACE MR0175 kuj muab cov lus qhia rau kev tsim thiab kev tsim cov khoom siv thiab cov khoom siv kom txo qis qhov kev pheej hmoo ntawm kev tawg ntawm sulfide. Qhov no suav nrog cov lus qhia rau cov txheej txheem vuam, kev kho qhov chaw, thiab lwm yam kev ntsuas los tiv thaiv kev tawg ntawm hydrogen 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 hauv kev ua haujlwm roj av. Los ntawm kev xaiv thiab kev txheeb xyuas cov ntaub ntawv raws li tus qauv, cov neeg ua haujlwm tuaj yeem txo qhov kev pheej hmoo ntawm kev tawg ntawm sulfide thiab xyuas kom muaj kev nyab xeeb thiab kev ua haujlwm zoo ntawm lawv cov chaw.

Xaus lus, NACE MR0175 yog tus qauv tseem ceeb rau kev lag luam roj thiab roj av, muab cov lus qhia rau kev xaiv thiab kev tsim nyog ntawm cov ntaub ntawv uas tiv taus sulfide kev ntxhov siab tawg hauv cov chaw ua roj av corrosive. Los ntawm kev ua raws li cov kev cai ntawm tus qauv no, cov neeg ua haujlwm tuaj yeem txo qhov kev pheej hmoo ntawm sulfide kev ntxhov siab tawg thiab xyuas kom meej tias lawv cov khoom siv thiab cov khoom siv muaj kev ncaj ncees thiab kev ntseeg siab. Kev ua raws li NACE MR0175 yog qhov tseem ceeb rau kev tswj hwm kev nyab xeeb thiab kev ua haujlwm zoo ntawm kev ua haujlwm roj av.

Hikelok tuaj yeem muab ntau yam khoom uas ua raws li NACE MR0175 tus qauv, xws liCov Khoom Siv Raj, Cov Khoom Siv Yeeb Nkab, Pob Valves, Koob Valves, Tshawb xyuas cov li qub, Cov Li Qub Pab, Cov Qauv Lub Tog Raj Kheej.