Duplex 2205 thiab super duplex 2507 yog ferritic -austenitic stainless hlau tsim rau cov ntawv thov uas xav tau lub zog siab thiab ua haujlwm rau chloride- ntsig txog corrosion. Duplex 2205 yog siv dav hauv kev ua tshuaj, kev kho dej thiab cov tshuab kev lag luam, thaum super duplex 2507 feem ntau raug soj ntsuam rau cov tshuaj chloride hnyav dua, dej hiav txwv, dej hiav txwv thiab dej hiav txwv.
Qhov kev xaiv raug tsis tuaj yeem ua los ntawm cov npe alloy lossis PREN ib leeg. Kub, chloride concentration, pH, oxygen, ntws, deposits, crevices, deg mob, vuam zoo thiab xav tau kev saib xyuas tag nrho cov cuam tshuam qhov tseeb corrosion.
Cov lus teb ncaj qha
Xaivwb 2205Thaum cov kev pabcuam yuav tsum muaj zog dua thiab cov tshuaj chloride tsis zoo dua li cov pa 304L lossis 316L, tab sis ib puag ncig tsis pom zoo rau tus nqi thiab kev tsim khoom ntawm qib super duplex. Ntsuam xyuasSuper duplex 2507Thaum cov tshuaj chloride concentration, kub, dej hiav txwv raug, crevice txaus ntshai los yog pitting qhov hnyav yog ntau dua.
Duplex 2205 vs Super Duplex 2507 ntawm ib sab
| Yam khoom | TIAB SA 2205 | Super Duplex 2507 |
|---|---|---|
| Common UNS qib | UNS S32205 | UNS S32750 |
| Cov lus piav qhia | 22Cr duplex stainless hlau | 25Cr super duplex stainless hlau |
| txheeb ze alloy theem | Nruab nrab chromium, molybdenum thiab nitrogen | Siab chromium, molybdenum thiab nitrogen |
| Pitting kuj | Haum rau ntau qhov chaw muaj chloride | Kev tiv thaiv siab dua hauv kev txhoj puab heev chloride thiab seawater kev pabcuam |
| Tej daim ntawv thov | Kev siv tshuaj lom neeg, kev kho dej, cov ntaub so ntswg thiab ntawv, txheej txheem piping | Desalination, offshore, dej hiav txwv txias, kev pabcuam chloride hnyav |
| Fabrication tswj | Yuav tsum tau duplex - tshwj xeeb vuam thiab tswj cua sov | Yuav tsum muaj cua sov nruj dua- tawm tswv yim, cuam tshuam thiab tswj kev huv |
| Tus nqi txheeb ze | qis | Siab dua vim alloy cov ntsiab lus thiab ntau lawm yuav tsum tau |
Duplex 2205 yog dab tsi?
Duplex 2205 feem ntau yog hais txog UNS S32205. Nws yog ib qho dav siv duplex stainless hlau uas sib txuas cov theem austenitic thiab ferritic thiab muab lub zog ntau dua li cov hlau tsis zoo austenitic.
Nws cov txiaj ntsig zoo xws li:
- Lub zog muaj zog ntau dua 304L thiab 316L
- Kev tiv thaiv zoo rau chloride kev nyuaj siab -corrosion cracking
- Txhim kho pitting thiab crevice- corrosion kuj piv nrog ntau cov pa austenitic qib
- Kev ua tau zoo hauv ntau yam tshuaj thiab dej-kev kho ib puag ncig
- Muaj peev xwm txo cov phab ntsa thickness thaum tso cai los ntawm engineering tsim
- Tsawg alloy nqi tshaj super duplex 2507
Duplex 2205 feem ntau yog qhov kev xaiv thawj zaug thaum 316L tsis muab cov tshuaj chloride txaus tab sis ib puag ncig tsis xav tau super duplex alloy.
Super Duplex 2507 yog dab tsi?
Super duplex 2507 feem ntau yog hais txog UNS S32750. Nws muaj ntau dua chromium, molybdenum thiab nitrogen ntau dua duplex 2205 thiab yog tsim los rau ib puag ncig corrosive heev.
Nws cov txiaj ntsig zoo xws li:
- Kev tiv thaiv chloride siab heev - corrosion cracking
- Siab dua rau pitting thiab crevice corrosion
- High mechanical zog
- Muaj zog tiv thaiv hauv dej hiav txwv thiab siab -chloride ib puag ncig
- Zoo tiv thaiv corrosion corrosion thiab qaug zog corrosion
- Haum rau kev xav tau offshore, marine thiab desalination kev pab cuam
Super duplex 2507 yog qhov tseem ceeb tshaj plaws thaum nws ntxiv corrosion kuj hais txog qhov kev pheej hmoo kom pom tseeb. Kev siv nws nyob rau hauv ib puag ncig me me tuaj yeem ntxiv tus nqi yam tsis tau muab cov txiaj ntsig zoo rau lub neej.
S31803 vs S32205
S31803 thiab S32205 yog cov qib duplex zoo sib xws thiab ob qho tib si feem ntau cuam tshuam nrog lub npe lag luam 2205. Txawm li cas los xij, lawv yuav tsum tsis txhob raug kho zoo ib yam.
| Yam khoom | UNS S31803 | UNS S32205 |
|---|---|---|
| Kev tswj kev sib xyaw | Cov kev txwv ntau dua | Tighter chromium, molybdenum thiab nitrogen tswj |
| Kev lag luam npe | Feem ntau hu ua duplex 2205 | Common niaj hnub 2205 specification |
| Kev pom zoo yuav khoom | Qhia qhov tseeb UNS qib es tsis xaj tsuas yog "2205" | |
Kev yuav khoom:Yog tias qhov kev nug tsuas yog "duplex 2205," cov lus hais yuav yog raws li qib UNS sib txawv, txwv tshuaj lom neeg lossis kev xav tias muaj. Qhov no tuaj yeem tsim kev sib txawv ntawm kev lag luam thiab kev lag luam ntawm cov neeg muag khoom.
Chemical Composition thiab Vim Li Cas Nws Tseem Ceeb
Qhov corrosion-kev ua tau zoo sib txawv ntawm 2205 thiab 2507 yog tsav los ntawm chromium, molybdenum thiab nitrogen ntau. Cov ntsiab lus no cuam tshuam passivation, pitting tsis kam, theem sib npaug thiab weld tus cwj pwm.
| Lub ntsiab | Cov nyhuv tseem ceeb | 2507 piv nrog 2205 |
|---|---|---|
| Chromium | Txhawb passive- zaj duab xis tsim thiab oxidation kuj | Siab dua |
| Molybdenum | Txhim kho pitting thiab crevice - corrosion kuj | Siab dua |
| Nitrogen | Txhawb zog, pitting kuj thiab austenite tsim | Siab dua |
| Nickel | Txhawb kev tsim austenite thiab theem sib npaug | Feem ntau siab dua |
Cov ntsiab lus alloy siab dua tuaj yeem txhim kho qhov muaj peev xwm tiv thaiv corrosion tab sis kuj nce cov nqi khoom thiab tej zaum yuav xav tau kev vuam nruj dua, cua sov- kho thiab zoo- cov txheej txheem tswj.
Dab tsi PREN tuaj yeem thiab tsis tuaj yeem qhia koj
PREN, los yog pitting kuj sib npaug tus lej, feem ntau yog siv los sib piv cov txheeb ze pitting tsis kam ntawm stainless hlau qib raws li chromium, molybdenum thiab nitrogen cov ntsiab lus.
Kev sib raug zoo ntawm PREN
PREN=%Cr + 3.3 × %Mo + 16 × %N
PREN tuaj yeem pab sib piv cov chemistry alloy, tab sis nws tsis tuaj yeem lees paub qhov tsim nyog lossis kev pabcuam lub neej.
| PREN tuaj yeem pab qhia | PREN tsis tuaj yeem lees paub |
|---|---|
| Cov txheeb ze alloy tsis kam rau pitting | Qhov tseeb qhov kev pab cuam lub neej |
| Kev sib piv dav dav ntawm 2205 thiab 2507 | Weld- thaj tsam corrosion ua haujlwm |
| Muaj peev xwm tiv taus raws li chemistry | Deg huv si, cuam tshuam crevice los yog deposits |
| Seb lub alloy yog broadly ntau alloyed | Kev ua tau zoo raws li qhov kub thiab txias, pH thiab chloride ua ke |
Rau duplex stainless hlau, theem nrog qis hauv zos PREN tuaj yeem tswj pitting kev ua tau zoo. Kev suav cov nominal alloy tsis tuaj yeem hloov cov theem kom raug, kev kho cua sov thiab tswj vuam.
Vim li cas Kub Hloov Cov Khoom Txiav Txim Siab
Chloride corrosion feem ntau yuav hnyav dua thaum kub nce. Cov khoom siv uas ua tau zoo nyob rau hauv cov tshuaj chloride txias- uas muaj dej yuav ua rau muaj kev cuam tshuam thaum cov kua dej kub, qhov kub thiab txias sab nraud los yog kaw qhov kub nce.
Tsawg lossis nruab nrab chloride kub
Duplex 2205 tej zaum yuav txaus thaum cov tshuaj chloride concentration, kub thiab crevice yuav nyob twj ywm nyob rau hauv ib tug tswj ntau yam.
Kev pabcuam kub chloride siab dua
Qhov nce pitting thiab crevice-corrosion kuj ntawm super duplex 2507 ua qhov tseem ceeb dua.
Ua kom siab - qhov kub ntawm cov qauv raug
Ob qho tib si duplex thiab super duplex steels yuav tsum tau tshuaj xyuas vim tias qhov ntev ntev raug rau qhov tsis haum siab siab - qhov kub thiab txias yuav ua rau muaj kev cuam tshuam los yog tsim teeb meem rau theem.
Qhov kev nug yuav tsum muab qhov tsawg kawg nkaus, ib txwm, siab tshaj plaws thiab tu qhov kub thiab txias es tsis yog ib qho kev khiav hauj lwm nominal.
Vim li cas Crevices tuaj yeem hla qhov sib piv Alloy
Crevices txwv tsis pub thauj cov pa oxygen, mloog cov tshuaj chlorides thiab tsim cov tshuaj lom neeg hauv zos uas yuav ua rau muaj kev txhoj puab heev dua li cov kua dej ntau.
Feem ntau qhov chaw crevice muaj xws li:
- Gasketed flange ntsej muag
- Deposits thiab sediment
- Tube -cov ntawv txuas
- Txhawb nqa clamps
- Threaded kev sib txuas
- Tsis tiav weld nkag
- shielded sab nrauv
Engineering qhov tshwm sim:Kev hloov kho los ntawm 2205 mus rau 2507 tuaj yeem ua rau cov npoo npoo corrosion nce, tab sis kev tsim cov crevice loj, cov dej tsis zoo lossis cov dej tsis zoo tuaj yeem ua rau muaj kev tawm tsam hauv zos. Kev xaiv cov khoom siv thiab kev tsim kho tshuab yuav tsum tau tshuaj xyuas ua ke.
Niam Hlau, Weld Hlau thiab Thaum tshav kub kub-Teb chaws cuam tshuam
Lub duplex stainless hlau system tsis muaj ib qho kev tiv thaiv corrosion. Cov khoom siv hauv paus, vuam hlau thiab cua sov- thaj tsam cuam tshuam tej zaum yuav muaj qhov sib txawv microstructures thiab cov khoom sib npaug hauv zos.
| Thaj chaw | Tseem ceeb Risk | Tswj Txoj Kev |
|---|---|---|
| Cov khoom siv hauv paus | Qib tsis raug, kev kho cua sov tsis zoo lossis qhov chaw paug | Kev tswj cov khoom, kev daws teeb meem, PMI thiab kev npaj nto |
| Weld hlau | Cov theem tsis sib npaug, tsis haum rau cov hlau los yog oxidation | Tsim nyog muab tub lim hlau, tiv thaiv, tshem tawm roj thiab cua sov- tswj kev nkag |
| Thaum tshav kub kub- thaj tsam cuam tshuam | Tshaj ferrite, theem intermetallic lossis txo corrosion kuj | Tswj vuam tsis thiab interpass kub |
| Weld nto | Thaum tshav kub kub tint, oxide nplai, paug thiab roughness | Ntxuav, pickling, passivation thiab tshuaj xyuas |
Ib txoj haujlwm uas qhia txog 2507 cov khoom siv hauv paus tab sis tso cai rau cov vuam tsis muaj kev tswj xyuas thiab tsis muaj kev kho cua sov tuaj yeem ua tiav qhov kev ntseeg tau tsawg dua li qhov xav tau.
Vuam nyuaj thiab Fabrication tswj
Ob leeg 2205 thiab 2507 yuav tsum tau duplex - cov txheej txheem vuam tshwj xeeb. Super duplex 2507 feem ntau muaj qhov nqaim ntawm cov khoom siv vim tias nws qhov kev ua tau zoo corrosion nyob ntawm kev tswj nruj ntawm vuam chemistry, theem sib npaug thiab oxidation.
Qhov tseem ceeb welding tswj muaj xws li:
- Tsim nyog welding txheej txheem specification
- Tau tshaj los yog tshaj -alloyed filler hlau
- Tswj cua sov input
- Qhov kub siab tshaj qhov sib cuam tshuam
- Tsawg- noo noo consumables
- High - zoo tiv thaiv thiab rov qab roj
- Tshem tawm ntawm tshav kub tint thiab nto oxides
- Ferrite, corrosion los yog cuam tshuam kuaj qhov xav tau
Cov alloy kim dua tsis them rau cov txheej txheem vuam tsis zoo. Vuam muaj peev xwm yuav tsum tau soj ntsuam ua ntej cov khoom qib yog tiav.
Thaum Duplex 2205 feem ntau yog qhov kev xaiv zoo dua
Duplex 2205 feem ntau yuav tsum tau soj ntsuam ua ntej thaum:
01.Ib puag ncig yog corrosive ntau dua li cov kev pabcuam 316L tab sis tsis ncaj qha rau cov dej hiav txwv loj.
02.Chloride concentration thiab kev khiav hauj lwm kub yog nruab nrab.
03.Lub kaw lus muaj kev khiav dej num zoo, cov dej ntws tawm thiab kev tu huv.
04.Crevice geometry thiab deposits yog tswj.
05.Lub zog siab dua tuaj yeem txo qhov hnyav lossis phab ntsa tuab raws li tus qauv tsim qauv.
06.Tus nqi ntawm lub neej tsis ua rau cov khoom siv super duplex thiab cov nqi tsim khoom.
Thaum Super Duplex 2507 yuav tsum tau soj ntsuam
Super duplex 2507 yuav tsum raug soj ntsuam thaum:
01.Lub kaw lus tswj xyuas dej hiav txwv, cov dej ntshiab huv lossis cov tshuaj chloride hnyav - muaj cov kua dej.
02.Kev khiav hauj lwm kub nce hauv zos- kev pheej hmoo corrosion.
03.Crevice corrosion tsis tuaj yeem tshem tawm tag nrho los ntawm kev tsim.
04.Offshore, subsea, desalination lossis seawater -kev cia siab rau qhov txias yog qhov tseem ceeb.
05.Kev saib xyuas kev nkag tau yooj yim thiab qhov tshwm sim tsis ua tiav yog siab.
06.Kev ntsuas qhov project lossis cov khoom siv tshwj xeeb qhia meej yuav tsum tau qib super duplex.
Service Condition Decision Table
| Kev Pabcuam | Yam Tseem Ceeb | Initial Material Evaluation |
|---|---|---|
| Nruab nrab muaj chloride dej | Pitting thiab chloride SCC | Ntsuas duplex 2205 ua ntej |
| Cov dej txias txias | Pitting, deposits thiab crevice corrosion | Sib piv 2205 thiab 2507 siv cov ntaub ntawv tag nrho |
| Ntuj dej hiav txwv | Cov tshuaj chloride siab, cov khoom siv roj ntsha thiab cov crevices | Ntsuas super duplex 2507 |
| Concentrated desalination brine | Loj heev localized corrosion | Super duplex lossis siab dua -alloy tov tej zaum yuav xav tau |
| Cov txheej txheem tshuaj nrog tsis paub meej impurities | Active corrosion thiab variable kua chemistry | Yuav tsum tau soj ntsuam cov txheej txheem thiab tshuaj xyuas corrosion ua ntej xaiv |
| Cov kua dej nyob rau hauv cov deposits | Crevice corrosion thiab chloride concentration | Txhim kho kev tsim thiab tu; cov ntaub ntawv hloov kho ib leeg tuaj yeem tsis txaus |
Yog vim li cas kev hloov kho rau 2507 tseem tuaj yeem ua tsis tiav
Ib qho khoom siv txhim kho ua kom cov npoo npoo corrosion tab sis tsis kho txhua qhov teeb meem hauv lub cev.
| Ua Tsis Taus | Vim li cas 2507 Tej zaum tseem yuav muaj kev phom sij | Yuav tsum tau ua |
|---|---|---|
| Qhov hnyav stagnant crevice | Chemistry hauv zos tuaj yeem ua nruj dua li cov kua dej ntau | Kev tsim kho tshiab, tso dej tawm, tso dej tawm thiab tshem tawm crevice |
| Incorrect weld tshav kub input | Kev tsis txaus ntawm theem thiab nag lossis daus tsis zoo yuav txo qis hauv zos tiv thaiv | Tsim nyog welding txheej txheem thiab tswj interpass kub |
| Tshav kub tint sab laug ntawm weld | Chromium-depleted oxide zones tuaj yeem pib xeb hauv zos | Pickling, ntxuav thiab tshuaj xyuas qhov chaw |
| Hlau paug | Embedded carbon-steel particles tuaj yeem xeb thiab ua rau lub cev puas tsuaj | Cov cuab yeej tshwj xeeb, khaws cia thiab tswj kev sib kis |
| Kev npaj txhij txog impurity | Cov kua dej tiag tiag tuaj yeem nruj dua li cov qauv tsim | Tau ua tiav cov dej tshuaj ntsuam xyuas thiab keeb kwm kev ua haujlwm |
ASTM Cov Qauv rau 2205 thiab 2507 Cov Khoom
Cov qib alloy thiab cov qauv khoom yuav tsum tau hais cais. Cov khoom siv tib yam yuav muab tau raws li tubing, yeeb nkab, EFW yeeb nkab, phaj, fittings lossis flanges raws li cov qauv sib txawv.
| Txuj | Daim ntawv khoom | Hom Order Hom |
|---|---|---|
| ASTM A789 Cov Lus Qhia Tshwj Xeeb | Seamless los yog welded duplex tubing | Qhov tseeb OD × phab ntsa thickness |
| ASTM A790 Cov Lus Qhia Tshwj Xeeb | Seamless lossis ncaj -seam welded duplex yeeb nkab | NPS thiab Teem caij lossis cov yeeb nkab qhov ntev |
| ASTM A928 Cov Lus Qhia Tshwj Xeeb | EFW duplex yeeb nkab nrog muab tub lim hlau | Chav kawm, qib, OD lossis NPS, phab ntsa thiab radiography |
Kev txiav txim "2507 stainless hlau yeeb nkab" yam tsis muaj cov khoom lag luam tawm ntawm txoj kev tsim khoom, sizing system, tshuaj xyuas thiab ntawv pov thawj tsis meej.
Kev Xeem: Qhov Kev Ntsuas Txhua Yam Ua Pov Thawj
| Kuaj | Dab tsi Nws tuaj yeem ua pov thawj | Dab tsi Nws Tsis Muaj Peev Xwm Ib leeg |
|---|---|---|
| Tshuaj ntsuam xyuas | Alloy muaj pes tsawg leeg thiab UNS conformity | Kho cua sov kho los yog weld zoo |
| PMI | Kev txheeb xyuas teb ntawm cov ntsiab lus tseem ceeb ntawm cov alloy | Ua kom tiav chemistry, cov ntsiab lus nitrogen lossis corrosion kuj |
| Ferrite ntsuas | Qhov taw qhia theem sib npaug hauv cheeb tsam kuaj | Tsis muaj tag nrho cov teeb meem intermetallic theem |
| Corrosion xeem | Kev ua tau zoo nyob rau hauv ib qho kev kuaj kuaj mob | Universal kev pab cuam lub neej |
| Hydrostatic xeem | Lub siab ncaj ncees thaum lub sijhawm kuaj | Ntev - lub sij hawm corrosion kuj |
| Radiography los yog kuaj ultrasonic | Kev kuaj xyuas cov weld los yog cov khoom tsis sib xws | Deg huv si los yog yav tom ntej corrosion cwj pwm |
Cov ntaub ntawv xav tau ua ntej xaiv cov khoom
Kev txiav txim siab 2205 piv rau 2507 yuav tsum muaj ntau tshaj li lub npe ntawm cov kua dej.
Dej chemistry
Chlorides, pH, acids, oxidants, yaj gases, solids thiab tej yam kab mob
Kub
Yam tsawg kawg nkaus, ib txwm, siab tshaj, ntxuav thiab kaw qhov kub thiab txias
Flow condition
Kev nrawm nrawm, stagnation, turbulence, tuag ceg thiab ua haujlwm tsis sib xws
Kev tsim kho tshuab
Kev kub siab, kev ntxhov siab, kev co, kev pheej hmoo yaig thiab yuav tsum tau muaj phab ntsa thickness
Fabrication
Vuam txheej txheem, muab tub lim hlau, cua sov input, dabtsi yog khoov, machining thiab post- vuam tu
Kev tu
Kev tshuaj xyuas kev nkag mus, kev tu ntau zaus, kaw tus nqi thiab hloov qhov nyuaj
Cov ntawv thov kev lag luam raug
Yuav Ua Li Cas Qhia Duplex 2205 lossis 2507 Cov Khoom
Rau kev npaj kev txiav txim dav dav, xa mus raustainless hlau yeeb nkab quotation guide.
Piv txwv 2205 nug
ASTM A790/A790M, UNS S32205 duplex stainless hlau seamless yeeb nkab, NPS 4, Teem caij 40S, 6000 mm ntev, bevelled kawg, tov cua sov-kho thiab pickled mob, hydrostatic kuaj, PMI thiab EN 10204 3.1 daim ntawv pov thawj, rau chloride{8}.
Piv txwv 2507 nug
ASTM A790/A790M, UNS S32750 super duplex stainless hlau seamless yeeb nkab, NPS 6, Teem sijhawm 40S, 6000 mm ntev, bevelled kawg, tov cua sov-kho thiab pickled mob, hydrostatic testing, PMI, teev corrosion testing thiab EN 10204 3.1 daim ntawv pov thawj, rau seawater service.
Kev yuav khoom yuam kev
Order tsuas yog "2205" lossis "2507"
Qhov kev nug yuav tsum hais qhov tseeb UNS qib, cov qauv khoom, kev tsim khoom thiab qhov ntev.
Xaiv 2507 tsuas yog vim nws PREN siab dua
PREN tsis ntes cov geometry crevice, vuam mob, kub, deposits los yog deg paug.
Tsis quav ntsej tus welding tus neeg ua haujlwm muaj peev xwm
Cov khoom siv super duplex tuaj yeem poob qhov kev xav tau thaum welded siv cov txheej txheem tsis zoo lossis kev tiv thaiv roj tsis zoo.
Muab piv rau cov khoom siv nqi ib kilogram xwb
Kev sib piv muaj txiaj ntsig suav nrog phab ntsa thickness, fabrication, tshuaj xyuas, tu, downtime thiab hloov nqi.
Piv txwv tias cov ntaub ntawv pov thawj pov thawj teb corrosion kuj
Ib daim ntawv pov thawj txheeb xyuas cov ntaub ntawv tsim tawm. Nws tsis yog nws tus kheej paub meej tias kev ua haujlwm yav tom ntej hauv txhua qhov kev ua haujlwm.
Cov lus nug nquag
Dab tsi yog qhov txawv ntawm duplex 2205 thiab super duplex 2507?
Super duplex 2507 muaj ntau dua chromium, molybdenum thiab nitrogen cov ntsiab lus thiab feem ntau muab siab dua pitting, crevice -corrosion thiab chloride tsis kam tshaj duplex 2205.
Puas yog 2507 ib txwm zoo dua 2205?
Tsis yog . 2507 muab cov npoo corrosion ntau dua, tab sis 2205 tej zaum yuav muaj kev lag luam ntau dua thiab muaj peev xwm txaus nyob rau hauv kev lag luam nruab nrab.
Duplex 2205 puas tuaj yeem siv rau hauv dej hiav txwv?
Suitability nyob ntawm qhov kub, ntws, deposits, crevices thiab raug tej yam kev mob. Kev pabcuam dej hiav txwv hnyav lossis ntuj tsim feem ntau xav tau kev soj ntsuam ntawm super duplex 2507 lossis lwm qhov siab dua -alloy tov.
UNS tus lej rau duplex 2205 yog dab tsi?
UNS S32205 yog qhov feem ntau teev tseg niaj hnub duplex 2205 qib. UNS S31803 muaj feem cuam tshuam zoo tab sis muaj kev txwv ntau dua.
UNS tus lej rau super duplex 2507 yog dab tsi?
Super duplex 2507 feem ntau teev raws li UNS S32750.
PREN puas tuaj yeem txiav txim siab cov khoom raug?
PREN muaj txiaj ntsig zoo rau kev sib piv alloy tab sis tsis tuaj yeem hloov kho cov tshuaj chloride concentration, kub, pH, crevices, vuam, qhov chaw thiab kev saib xyuas.
Cov qauv twg npog 2205 thiab 2507 yeeb nkab thiab raj?
ASTM A789 npog duplex tubing, ASTM A790 npog seamless thiab ncaj-seam welded duplex yeeb nkab, thiab ASTM A928 npog EFW duplex yeeb nkab ua nrog cov hlau muab tub lim.
Xaiv Txoj Cai Duplex Stainless Steel Qib
Duplex 2205 yog ib qho muaj zog thiab raug nqi - cov khoom siv tau zoo rau ntau yam tshuaj, dej- kev kho thiab kev lag luam. Super duplex 2507 muab qhov loj dua corrosion margin rau seawater, concentrated chlorides, offshore service thiab tej yam kev mob nrog ntau dua pitting los yog crevice -corrosion txaus ntshai.
Qhov kev txiav txim zaum kawg yuav tsum sib xyaw ua ke ntawm alloy chemistry, kub, chloride concentration, kua impurities, crevice tsim, vuam muaj peev xwm, kev xeem yuav tsum tau thiab lifecycle nqi.
Kev nce qib ntawm cov khoom muaj txiaj ntsig tsuas yog thaum ua tiav kev tsim khoom, vuam, nto- kev kho thiab kev ua haujlwm tuaj yeem khaws cia qhov kev xav tau corrosion.
Xav Tau Kev Pab Piv Duplex 2205 thiab Super Duplex 2507?
Xa STAKENG koj cov khoom tsim nyog, qib UNS, qhov ntev, ntau, cov txheej txheem dej, chloride concentration, kub thiab tshuaj xyuas. Peb pab neeg tuaj yeem tshuaj xyuas cov lus qhia tshwj xeeb thiab paub meej tias muaj cov yeeb nkab duplex stainless hlau lossis cov raj xaiv.
Xa koj cov ntaub ntawv xav tauDaim ntawv ceeb toom: xaiv cov khoom siv yuav tsum tau lees paub tiv thaiv tus qauv tsim khoom, tsim qauv, ua tiav cov txheej txheem thiab cov kev xav tau corrosion.
