Kev ua haujlwm hauv kev lag luam hnyav—txij li cov chaw ua haujlwm hauv hiav txwv mus rau cov chaw tsim tshuaj lom neeg—vam kho cov qauv vuam uas tiv taus qhov chaw kub hnyiab thiab xeb txhua hnub. Thaum cov qauv no tsis ua haujlwm vim tsis kam xeb, cov nqi yuav nce ntxiv: lub sijhawm tsis ua haujlwm tsis tau npaj tseg, kev kho kim heev, thiab txawm tias muaj kev pheej hmoo kev nyab xeeb. Nws tsis yog qhov xav tsis thoob uas qhov kev thov rau cov ntaub ntawv vuam uas tiv taus xeb txhim khu kev qha tau nce siab, nrog rau cov hlau sib xyaw xws liER316Ltawm los ua ib qho kev daws teeb meem rau cov ntawv thov tseem ceeb. Qhov kev hloov pauv no tsis yog ib qho kev hloov pauv xwb - nws yog ib qho kev teb rau cov teeb meem thoob plaws hauv kev lag luam uas cov neeg yuav khoom thiab cov engineers ntsib txhua hnub.
Rau cov neeg yuav khoom lag luam hnyav, qhov tseem ceeb yog qhov tseeb: cov ntaub ntawv uas xa cov kev ua tau zoo tas li yam tsis muaj kev cuam tshuam rau kev ruaj khov lossis kev ua raws li txoj cai. Kev xeb, tshwj xeeb tshaj yog los ntawm cov chaw muaj chloride ntau lossis qhov kub thiab txias heev, yog qhov ua rau muaj kev vuam tsis zoo. Cov ntaub ntawv tsis ntev los no qhia tau tias 37.6% ntawm kev puas tsuaj ntsig txog kev vuam yog los ntawm kev ua haujlwm tsis sib xws ntawm cov khoom siv lossis kev tiv thaiv tsis zoo rau cov xwm txheej hnyav. Qhov no yog qhov uas ER316L stainless hlau vuam hlau sawv tawm - tsis yog tsuas yog cov khoom lag luam xwb, tab sis ua kev daws teeb meem rau cov teeb meem mob no.
ER316L yog cov hlau vuam hlau austenitic stainless hlau uas muaj cov pa roj carbon tsawg, uas txawv ntawm nws cov ntsiab lus molybdenum (2.0% -3.0%) uas ua rau muaj kev tiv thaiv rau kev xeb pitting thiab crevice - ob hom kev xeb uas ua rau puas tsuaj tshaj plaws hauv kev lag luam hnyav. Tsis zoo li cov hlau sib xyaw xws li ER304L, nws cov molybdenum ntxiv rau Pitting Resistance Equivalent Number nce mus rau 24-28, ua rau nws zoo tagnrho rau cov chaw uas tsis zam kev raug chloride. Nws cov ntsiab lus carbon tsawg (≤0.03%) kuj tiv thaiv kev xeb intergranular, ib qho teeb meem tshwm sim thaum cov qauv welded raug rau cov voj voog kub nruab nrab.
Txawm li cas los xij, qhov tseem ceeb tshaj plaws rau cov neeg yuav khoom hauv kev lag luam yog li casER316Lua raws li qhov xav tau ntawm kev lag luam hnyav hauv ntiaj teb tiag. Siv cov haujlwm tsim kho hauv dej hiav txwv thiab cov haujlwm hauv hiav txwv: cov qauv ntawm no nyiaj dhau qhov dej hiav txwv tas li, tshuaj tsuag ntsev, thiab qhov kub thiab txias hloov pauv. ER316L lub peev xwm los tswj kev ua haujlwm zoo hauv cov xwm txheej no txo qhov xav tau kev saib xyuas ntau zaus, qhov tseem ceeb rau kev txuag nyiaj rau cov neeg ua haujlwm. Ib yam li ntawd, hauv cov tshuaj lom neeg thiab petrochemical, qhov twg cov kua qaub thiab chloride-based muaj ntau, ER316L qhov kev tiv thaiv corrosion ua kom ntseeg tau tias ua raws li cov qauv kev nyab xeeb thiab txuas ntxiv lub neej ntawm cov khoom siv.
Kev thov nce ntxiv rau cov ntaub ntawv vuam uas tiv taus corrosion zoo liER316Lkuj tseem khi rau kev hloov pauv ntawm kev lag luam dav dua: kev lag luam hnyav txav mus rau kev tsim khoom ntsuab thiab kev hloov kho khoom siv siab. Raws li cov cai tswjfwm ib puag ncig kev tso pa tawm thiab kev ruaj khov nruj, cov neeg yuav khoom tab tom nrhiav cov ntaub ntawv uas txhawb nqa ob qho tib si kev ua haujlwm zoo thiab kev phooj ywg ib puag ncig. ER316L haum rau daim nqi no los ntawm kev ua kom cov qauv siv tau ntev dua - txo cov pa roj carbon uas cuam tshuam nrog kev hloov pauv thiab kho. Tsis tas li ntawd, thaum cov kev lag luam xws li lub zog rov ua dua tshiab nthuav dav, qhov xav tau rau cov kev daws teeb meem vuam uas tiv taus xeb hauv cov chaw ib puag ncig hnyav loj hlob tuaj.
Rau cov neeg yuav khoom uas tab tom nrhiav kev lag luam, kev xaiv cov khoom siv vuam uas tiv taus xeb zoo tshaj qhov xaiv cov khoom - nws yog hais txog kev sib phim cov hlau sib xyaw rau daim ntawv thov.ER316LNws muaj qhov sib npaug ntawm kev ua tau zoo thiab kev siv tau yooj yim: nws muaj kev tiv taus xeb zoo dua piv rau cov hlau pib, thaum tseem pheej yig dua li lwm cov hlau uas muaj molybdenum ntau xws li ER317L. Nws kuj muaj peev xwm vuam tau zoo heev, sib xws nrog cov txheej txheem ib txwm muaj xws li GTAW thiab GMAW, thiab ua haujlwm tau zoo nrog ob qho tib si 316L stainless hlau thiab (cov hlau sib txawv) xws li 304L, ntxiv kev hloov pauv rau cov haujlwm nyuaj.
Kev sib xws ntawm qhov zoo yog lwm yam uas tsis tuaj yeem sib tham tau rau cov neeg yuav khoom hauv kev lag luam hnyav - thiab yog qhov laj thawj tseem ceeb uas ER316L muaj kev thov ntau. Kev tsis sib xws ntawm cov khoom zoo tuaj yeem ua rau muaj kev puas tsuaj loj heev, tshwj xeeb tshaj yog hauv cov ntawv thov tseem ceeb xws li LNG cia lossis cov khoom siv hluav taws xob nuclear. Cov neeg muab khoom ER316L uas muaj koob npe nrov ua raws li cov qauv nruj kom ntseeg tau tias muaj cov tshuaj lom neeg sib xws thiab cov khoom siv kho tshuab, txo qhov kev pheej hmoo ntawm kev hloov pauv ntawm kev ua tau zoo. Cov neeg yuav khoom yuav tsum muab qhov tseem ceeb rau cov neeg muab khoom uas muab cov ntaub ntawv taug qab thiab ua raws li txoj cai, vim tias cov no yog cov cim qhia txog cov khoom lag luam txhim khu kev qha, zoo.
Saib mus tom ntej, qhov kev thov rau cov khoom siv vuam uas tiv taus xeb hauv kev lag luam hnyav yuav tsuas yog loj hlob thaum cov khoom siv ua haujlwm hauv cov xwm txheej hnyav zuj zus thiab kev ruaj khov ua qhov tseem ceeb. ER316L yuav tseem yog qhov tseem ceeb rau cov neeg yuav khoom nrhiav kev daws teeb meem uas tau ua pov thawj, ntau yam uas daws cov teeb meem xeb, txo cov nqi mus sij hawm ntev, thiab sib haum nrog cov qauv kev lag luam. Rau cov neeg hauv kev lag luam hnyav, kev nqis peev rau hauv cov khoom siv vuam uas tiv taus xeb tsis yog kev yuav khoom xwb - nws yog kev nqis peev rau kev ntseeg siab thiab kev nyab xeeb hauv kev ua haujlwm.
Lub sijhawm tshaj tawm: Lub Ib Hlis-22-2026