Cov904L zawv zawg ntawm flangeyog flange khoom ntawm qib F904L tsim raws li ASTM A182 tus qauv.
Cov khoom no yog super austenitic stainless hlau, Ameslikas tsim los daws qhov teeb meem ntawm corrosion los ntawm dilute sulfuric acid. Tom qab ntau xyoo ntawm kev ua pov thawj daim ntawv thov, nws tau pom zoo siv rau hauv kev tsim cov hlab ntsha hauv ntau lub tebchaws.
Qhov loj ntawm 904L flanges npog 1/2 nti txog 48 ntiv tes, nrog kev ntsuas siab los ntawm Chav Kawm 150 mus rau Chav Kawm 2500. Kev sib khi lub ntsej muag muaj xws li tsa ntsej muag (RF), lub ntsej muag tiaj tus (FF), thiab lub nplhaib sib koom ua ke (RTJ), ua tau raws li qhov yuav tsum tau muaj kev sib txuas ntawm ntau yam kev ua haujlwm.
Technical Properties ntawm Steel 904L
1. Exceptional Resistant kom txo cov kua qaub
904L muab kev tiv thaiv tshwj xeeb tiv thaiv kev ua phem rau ib puag ncig, tshwj xeeb yog sulfuric acid, vim nws qhov sib ntxiv ntawm tooj liab.
Lub metallurgy ntawm 904L yog qhov txawv ntawm tus qauv 316L stainless hlau feem ntau vim nws cov ntsiab lus nickel thiab chromium siab, txhawb nqa los ntawm 1.5% tooj liab. Nyob rau hauv lub xub ntiag ntawm sulfuric acid, tooj liab pab txhawb kev tsim ntawm ib tug ruaj khov, passive zaj duab xis uas tiv thaiv cov hlau los ntawm dissolving.
Qhov no ua rau 904L SO flanges indispensable nyob rau hauv cov concentrations qhov twg lwm yam stainless hlaus yuav ntsib sai thinning thiab kev puas tsuaj tsis ua hauj lwm. Txawm hais tias nyob rau hauv kev tsim cov kua qaub los yog kev ua haujlwm pickling, cov cuab yeej no ua kom muaj kev ncaj ncees ntawm cov ntsiab lus ntawm lub davhlau ya nyob twg hauv cov kav dej.
2. High Pitting Resistance nyob rau hauv Chloride Ib puag ncig
Lub siab molybdenum thiab nitrogen cov ntsiab lus nyob rau hauv 904L ua rau ib tug superior Pitting Resistance Equivalent Number piv rau cov qauv austenitic qib.
Hauv cov ntsiab lus ua tau zoo, 904L SO flanges tsis tshua muaj peev xwm tsim cov me me, qhov tob "qhov" uas ua rau cov dej xau hauv dej hiav txwv txias los yog cov dej tsis huv. Cov cuab yeej no yog qhov tseem ceeb rau flanges, qhov chaw nyob ntawm qhov chaw nruab nrab ntawm lub gasket thiab lub ntsej muag flange yog ib txwm muaj qhov kub thiab txias rau crevice corrosion.
3. Kev tiv thaiv kev ntxhov siab Corrosion tawg
Lub siab nickel concentration nyob rau hauv 904L muab ze li ntawm kev tiv thaiv kab mob chloride -induced stress corrosion cracking.
Kev ntxhov siab corrosion cracking yog ib qho ntawm feem ntau insidious tsis ua hauj lwm hom nyob rau hauv industrial piping, tshwm sim thaum tensile kev nyuaj siab thiab ib tug corrosive nruab nrab ua ib txhij ntawm cov khoom. Thaum lub 300-series steels muaj kev cuam tshuam rau SCC ntawm qhov kub siab tshaj 60 degree, 25% nickel cov ntsiab lus hauv 904L hloov cov siv lead ua lattice stability, ua rau nws muaj zog heev.
Rau peb cov neeg siv khoom hauv kev lag luam petrochemical thiab hluav taws xob, cov cuab yeej no txhais tau tias yuav txo tau qhov kev pheej hmoo ntawm kev tawg sai sai hauv qhov kub ntawm -kub saline ib puag ncig.
4. Tsis yog-Magnetic Nature thiab Structural Stability
904L tuav cov qauv austenitic tag nrho thoob plaws txhua qhov kub thiab txias, kom ntseeg tau tias nws tseem tsis yog-sib nqus thiab muaj zog heev txawm tias tom qab hnyav fabrication.
Tsis zoo li qee qhov duplex lossis ferritic steels uas tuaj yeem ua cov hlau nplaum los yog nkig nyob rau hauv qee yam thermal, 904L yog qhov ruaj khov heev. Qhov no yog qhov tshwj xeeb tshaj yog rau SO flanges, uas yuav tsum tau vuam tseem ceeb.
Cov hlau tsis muaj cov ntsiab lus carbon tsawg tiv thaiv carbide nag lossis daus thaum lub sij hawm vuam, kom ntseeg tau tias thaj chaw nyob ib ncig ntawm lub flange tseem zoo li corrosion-resistant li lub hauv paus hlau. Qhov kev ruaj ntseg ntawm cov qauv no kuj txhais tau hais tias lub flange tuaj yeem tiv taus qhov kub thiab txias tsis tas yuav poob nws lub zog.
Kev siv ntawm 904L SO Flanges
Sulfuric Acid Production thiab Cia
904L yog siv rau hauv kev thauj thiab khaws cia ntawm sulfuric acid ntawm ntau qhov ntau thiab qhov kub thiab txias.
Hauv cov nroj tsuag tshuaj, "qhov chaw qab zib" rau 904L yog kev tuav ntawm dilute sulfuric acid (qis dua 80% concentration) ntawm qhov kub txog li 60 degree. Cov qauv stainless hlau tau noj sai sai los ntawm cov kua qaub, qhov tooj liab -enriched 904L SO flanges muab lub foob zoo rau lub taub hau ntawm cov tso tsheb hlau luam thiab cov pob qij txha ntawm cov kab xa tawm.
Seawater Desalination thiab Marine Engineering
Cov hlau tsis kam rau cov dej ntsev sov ua rau nws qhov kev xaiv zoo tshaj plaws rau cov kav dej hauv cov nroj tsuag niaj hnub desalination thiab offshore platforms.
Hauv kev ua lag luam thoob ntiaj teb xyoo 2026, qhov kev thov rau cov dej tshiab tau siv zog siv Reverse Osmosis (RO) thiab Multi-Stage Flash (MSF) desalination. Cov kav dej hauv cov nroj tsuag no raug rau siab - cov dej hiav txwv siab, qhov twg qhov kev xeb yog qhov kev hem thawj tas li.
904L SO flanges yog siv rau hauv cov kab noj khoom haus thiab cov khoom siv hluav taws xob vim tias lawv muab qhov tsim nyog rau lub neej ntev hauv dej hiav txwv, ua tau zoo tshaj 316L thiab muab kev lag luam ntau dua rau titanium lossis siab -nickel superalloys.
Pharmaceutical and Food Processing
Lub siab purity thiab corrosion kuj ntawm 904L ua rau nws tsim nyog rau kev siv tshuaj nyob qhov twg cov neeg ua phem ntxuav yuav degrade txheem piping.
Kev tsim tshuaj feem ntau cuam tshuam nrog Kev huv huv - hauv - Qhov chaw (CIP) cycles siv cov kua qaub kub lossis cov tshuaj chlorine - cov tshuaj tua kab mob . 904L SO flanges tiv thaiv kev tawm tsam hauv zos los ntawm cov tshuaj ntxuav no, tiv thaiv cov hlau ion leaching thiab xyuas kom meej tias cov khoom kawg ua tau raws li cov qauv kev cai nruj.
Nws tsis yog- cov khoom sib nqus kuj ua rau nws zoo tagnrho rau ib puag ncig uas sib nqus cuam tshuam yuav tsum tau txo qis rau kev ntsuas ntsuas.
Roj thiab Roj Refining
Nyob rau hauv refinery scrubbing units, 904L SO flanges tiv taus cov acidic condensates thiab chloride-nplua nuj ib puag ncig pom nyob rau hauv flue gas desulfurization.
Raws li cov refineries ua hauj lwm kom tau raws li nruj me ntsis ib puag ncig emissions qauv, lawv siv "scrubbers" kom tshem tawm sulfur oxides los ntawm cov pa pa. Cov tshuaj txhuam hniav no tsim kom muaj cov kua qaub, chloride-dawb ib puag ncig.
904L SO flanges yog siv rau hauv cov kav dej uas cuam tshuam nrog cov chav no vim tias lawv tuaj yeem tswj cov tshuaj tsis haum tshuaj uas yuav ua rau 304 lossis 316 stainless hlau tawg los yog qhov hauv lub hlis ua haujlwm.
Vim Li Cas Xaiv Peb 904L SO Flanges
Peb lub Hoobkas forges txhua 904L SO flange los ntawm cov ntawv pov thawj cua sov, cov cav tov kom meej ASME B16.5 tolerances, thiab muab tag nrho cov ntaub ntawv traceability, NDT cov ntaub ntawv, thiab daim ntawv pov thawj hydrostatic xeem. Muaj nyob rau hauv qhov ntau thiab tsawg ½ "mus rau 24" thiab chav kawm 150-1500.
Tiv tauj peb pab neeghnub no mus nug txog 904L SO flanges.
