Tshuaj lom neeg muaj pes tsawg leeg tshuaj lom neeg thiab
Microstructure ntawm 316 vs 316l Hlau Mesh
Cov Hlau Stainless316thiab316Lyog ntawm cov khoom siv dav tshaj plaws hauv kev tsim cov ntaub hlau woven hlau thiab kev lim dej. Lawv yog ob qho tib si Molybdenum -} Cov kabmob} Cov kabmob} Cov kabmob Austenitic Stainless hlau nrog tshwj xeeb ua rau corrosion, tshuab siv tshuab hluav taws xob, thiab kub taub hau. Txawm li cas los xij, thaum lawv tau sib xyaw sib txawv, hloov maj mam hloov pauv hauvCov ntsiab lus carbonthiabkev tsimua rau kev ua tau zoo tshaj plaws kev ua tau zoo - Tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov koom nrogvuam, tshuaj lom neeg raug, lossis chaw nres tsheb nkoj.
Kab lus no muab txoj kev sib piv rau lawvTshuaj lom neeg cov tshuaj lom neeg, Metallurgical qauv, thiabKev ua haujlwm ua tau zoo, piav qhia seb cov ua kom lub siab li cas rau Mesh detability, Weld captity, thiab ntev {}} lub sij hawm corrosion.
Tshuaj lom neeg siv tshuaj: Cov Ntsiab Lus Tseem Ceeb thiab Kev Tswj Tshuaj Carbon
Hom 316 thiab 316L stainless cov hlau nplaum faib cov khoom sib dhos tib yam, tab sis txawv feem ntau hauv lawvQhov ntau kawg cov ntsiab lusCov. Qhov no zoo li kev hloov pauv me me cuam tshuam rau kev coj tus cwj pwm ntawm kev coj ua, weld kev ua tau zoo, thiab ntev ntawm cov hlau ntxaij hlau.
| Lub ntsiab | Hom 316 (%) | Hom 316L (%) | Muaj nuj nqi thiab ua tau zoo |
|---|---|---|---|
| Carbon (c) | Tsawg dua los yog sib npaug rau 0.08 | Tsawg dua los yog sib npaug rau 0.03 | Cuam tshuam carbide tsim; Cov pa roj ntau tau txhawb nqa; Cov pa roj carbon tsawg tiv thaiv kev sib txuam |
| Chromium (cr) | 16.0–18.0 | 16.0–18.0 | Tsim cov kev tiv thaiv kev tiv thaiv kev tiv thaiv kev tiv thaiv kev ua yeeb yam, muab cov oxidation thiab corrosion tsis kam |
| Npib tsib caug (ni) | 10.0–14.0 | 10.0–14.0 | Txhab cov qauv Austenic, nce kev nruj thiab ductility |
| Molybdenum (mo) | 2.0–3.0 | 2.0–3.0 | Txhim kho qhov pitting kuj, tshwj xeeb tshaj yog nyob hauv chloride ib puag ncig |
| Manganese (mn) | Tsawg dua los yog sib npaug rau 2.0 | Tsawg dua los yog sib npaug rau 2.0 | Txhim kho cov haujlwm kub thiab ua haujlwm ua deoxidizer |
| Silicon (si) | Tsawg dua los yog sib npaug rau 1.0 | Tsawg dua los yog sib npaug rau 1.0 | Txhim kho oxidation tsis kam thiab ua raws li deoxidizer |
| Phosphorus (p) | Tsawg dua los yog sib npaug rau 0.045 | Tsawg dua los yog sib npaug rau 0.045 | Txeg Kev Tswj Xyuas; Kev Deev PEDuces ntau dhau |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.03 | Tsawg dua los yog sib npaug rau 0.03 | Txhim kho kev siv tshuab. Tab sis tuaj yeem txo cov corrosion tsis kam yog ntau |
TusCarbon sib txawv- 0.08% vs 0.03% -may tshwm me me tab sis yog xim hlau tsis txaus ntseeg.
Thaum lub sij hawm vuam lossis caij sov cua sov (450-850 degree), pa roj ua ke nrog chromium los uachromium carbides (CR23C6), uas tau haus cov chromium tsim nyog rau kev tswj cov yeeb yaj kiab passive, khaws cia cov pa roj ntsha thiab ua kom cov pa roj ntsha ua rau muaj kev tiv thaiv, txawm nyob hauv cov pob qij txha welded lossis txiav cov npoo.
Tiag - kev soj ntsuam ntiaj teb:
Thaum 316 thiab 316L meshes yog ob txoj kev welded rau siv hauv lim cartridges me ntsis lossis tshem tawm cov pa hluav taws me me tom qab ntev ntev rau cov nyom me me.
Hauv ntej, txawm tias cov tshuaj sib thooj, cov tshuaj carbon txo qis hauv 316L tshem tawm carbide nag lossis ua ntev ntev hauv welded lossis siab}} huab cua sov. Qhov no yog ib qho txiav txim siab rau mesh siv nyob rau hauv cov thav ntawv framtration thiab cov tub rog ua haujlwm.
Molybdenum thiab Nickel: Corrosion Tiv Thaiv Cov Txheej Txheem
Ntawm cov lus alloy,Molybdenum (mo)thiabnpib tsib caug (ni)Ua si lub luag haujlwm tseem ceeb tshaj plaws hauv kev txhim kho corrosion tsis kam thiab ua kom ntev {}}} lub sij hawm ua tau zoo ruaj khov.
Molybdenum lub luag haujlwm hauv pitting resistance
Molybdenum txhim kho tiv tauschloride -} Ua rau pitting-} Daim ntawv hauv cov xeb hauv corrosion uas zoo li cov pits me me lossis crevices. Hauv dej hiav txwv lossis tshuaj lom neeg ua noj ua haus, qhov twg chloride ions tawm tsam lub passive zaj duab xis, Molybdenum ntxiv dag zog rau lub peev xwm tiv thaiv qhov no tawg.
TusPitting tiv thaiv tus lej sib npaug (pren)Feem ntau siv los kwv yees cov corrosion tsis kam ntawm stainless hlau:
Pren =% cr +3.3 (% mo)+16 (% n)
Rau 316 thiab 316L, PREN ib feem ntau yog los ntawm23 txog 28, uas yog ib qho tseem ceeb tshaj 304 stainless hlau (pren ≈ 18-20).
Qhov no piav yog vim li cas 316 / 316L meshes tau teev tseg rau cov lim dej num, cov tub rog ua tub rog, thiab Acid {2} {{lew cov tshuab ntxhua lim.
Nickel txoj haujlwm nyob rau hauv Austenitic kev ruaj khov
Nickel ruaj khov lubAustenitic qauv{{0- Qhov tsis {1} {{mont {{latting cubic (FCC) Lattice uas muab cov hlau uas tsis muaj zog.
Qib tsibckel siab dua thiab txhim kho lub peev xwm sib sib zog nqus hlau (mus rau 0.025 mm) tsis muaj xaim pob txha lov.
Tswv yim corrosion sib piv
| Huab cua | 304 ss | 316 SS | 316L SS |
|---|---|---|---|
| Tubrog Nkoj (NACL> 3.5%) | Moderate Corrosion | Tsawg corrosion | Tsawg heev corrosion |
| Acidic (hso₄ <20%) | Pom tau tawm tsam | Zoo heev | Zoo heev |
| Alkali daws teeb meem | Tswj kav | Zoo tshaj | Zoo tshaj |
| Siab vaum | Pitting yuav | Tsawg tsawg | Tsis pom zoo |
Lub synergistic ua ntawm mo thiab ni ntxiv dag zog ob qho tib si dav dav thiab cov kev ua yeeb yam zoo tshaj plaws hauv chloride, qhov twg nws cov kev ua yeeb yam zoo tshaj plaws nyob rau hauv chloride ua kom pom zoo tshaj plaws hauv 316, ncua kev kawm ntawv 316, ncua kev ua neej nyob rau 30-50%.
Microstructure thiab carbide tsim tus cwj pwm
Ob chav kawm muaj asiab autenenic qauv, txhais tau tias lawv cov nplej muaj ntsej muag -} Chaw Sau Cov Cubic. Cov qauv no yog dab tsi muab rau cov hlau tsis xeb zoo li 316 thiab 316L lawv sib xyaw ua ke, tsis {4 4}} MALECTION.
Txawm li cas los xij, thaum raug rau nce qhov kub (450-850 degree),Cov pa roj carbon atomstuaj yeem txhiv rau cov hmoov nplej thiab cov tshuaj tiv thaiv nrog chromium los uachromium carbidesCov. Qhov tshwm sim no, hu uasiab zoo, ua rauintergranular corrosion{{0- corrosion raws cov ciaj ciam nplej uas chromium yog zos tau txais kev tawm tsam.
Txawm li cas los xij, thaum raug rau nce qhov kub (450-850 degree),Cov pa roj carbon atomstuaj yeem txhiv rau cov hmoov nplej thiab cov tshuaj tiv thaiv nrog chromium los uachromium carbidesCov. Qhov tshwm sim no, hu uasiab zoo, ua rauintergranular corrosion{{0- corrosion raws cov ciaj ciam nplej uas chromium yog zos tau txais kev tawm tsam.
316: Cov Qauv Qeb
Ntau tus nqi rau cov rhiab.
Yuav tsum tau tshaj tawm - weld reld analing ntawm ~ 1050℃los yaj carbides.
Nyob rau hauv nplua mesh vuam, txawm tias cov carbide me me tuaj yeem tsim cov cua sov mo - cuam tshuam rau cov duab uas ua rau cov ntsiab lus rau xeb.
316L: Tsawg -} carbon variant
Cov ntsiab lus carbon cov ntsiab lus hauv qab 0.03% tiv thaiv carbide nag lossis hauv qab vuam.
Tuav cov homogeneity chromium thiab ua kom muaj kev ua yeeb yaj kiab txuas ntxiv.
Qhov zoo tagnrho rau welded qauv zoo li ntau - txheej lim mesh lossis epoxy- coated lim kev txhawb nqa.
Metallographic tsom xam
Nyob rau hauv kev siv hluav taws xob electron metcopy (sem), 316 qhia pom pomCr - decleted aav, thaum 316l tswj cov khoom siv roj chromium chromium chromium. Qhov no micrastrabtural sab nraud txhais lus ncaj qha mus rau tiag tiag ntev- lub sij hawm corrosion.
Lub microstructure ntawm 316L ua kom muaj kev ua tau zoo dua hauv vuam thiab ua kom sov, tswj qhov tsis xws- dawb oxide zaj duab xis. Hauv cov ntawv thov nyiamEpoxy -} co coated hlau mesh, Kev txhawb nqa hydraulic, lossismarine tawb, 316L tsis xwm yeem muab cov kev pabcuam ntev dua thiab lub ntsej muag huv si li 316.
Neeg kho tshuab thiab cov khoom siv lub cev
Txawm hais tias corrosion tsis kam yog thawj qhov sib txawv, cov khoom siv tshuab ntawm ob qib tseem ceeb hauv kev xaiv Mesh rau kev lag luam.
| Ntiag tug | 316 | 316L |
|---|---|---|
| Ntom ntom (g / cm³) | 8.00 | 8.00 |
| Tensile lub zog (mpa) | 515 | 485 |
| Yield zog (mpa) | 205 | 170 |
| Elongation (%) | 40 | 45 |
| Hardness (HB) | Tsawg dua los yog sib npaug rau 217 | Tsawg dua los yog sib npaug rau 217 |
| Melting taw tes (degree) | 1370–1400 | 1370–1400 |
316L muaj cov tensile tsawg dua thiab tawm los ntawm lub zog tab sis txhim khoductility thiab formabilityCov. Cov txiaj ntsig kev sib xyaw nrog hlau thiab nws cov haujlwm ua haujlwm, tso cai rau kev tsim cov ultra- mesh / nti / nti) tsis muaj xaim tawg.
Tsis tas li ntawd, ob qib tau khaws cov kev ua tau zoo ntawm cryogenic kub thiab nyob ruaj khov rau870 degree, making them suitable for both low- and high-temperature filtration environments.
316L kev txi ib qho me me ntawm lub zog kom tau txais kev du dua thiab muaj kev zoo ob. Nyob rau hauv tiag - Lub ntiaj teb tsim, no txhais tau rau cov ntxaij lim dej, tsawg dua, thiab yooj yim cov ntxaij vab tshaus, thiab precision sieving.
Metallurgical Cwj Pwm thaum lub sij hawm vuam thiab kev kho cua sov
Hwj txwv
316 yog weldable tab sis yuav tsum tau tshaj tawm {{} weld . 316 l, tuaj yeem welded los ntawm txhua tus qauv txheem {}}Tige, Mig, Chaw Welding, lossis Reactce Vuam{{0- Tsis muaj kev pheej hmoo ntawm cov nag los nag.
Qhov txiaj ntsig no yooj yim dua ntawm welded Mesh panels, lim cartridges, thiab multi {{}} txheej ua ke.
Kev Kho Cua Sov thiab Kev Nyuaj Siab nyem
Ob alloys tuaj yeem raug daws annealed ntawm 1040-1120℃thiab quelly quenched los kho corrosion tsis kam. Txawm li cas los xij, 316L feem ntau tsis tas yuav muaj annealing tom qab vuam, txo cov kauj ruam tsim khoom thiab tag nrho cov nqi ntau lawm.
Ua piv txwv piv txwv
Hauv Lim Cartridge Ntau Lawm:
● 316Mesh feem ntau yuav tsum tau tshaj tawm - weld acid pickling thiab passivation los rov qab cov ntsiab lus chromium nto.
● 316LMesh tswj hwm nws zaj duab xis passive thoob plaws, tso cai ncaj qha kev sib dhos lossis txheej txheej.
316L muaj cov peev txheej ntshiab thiab kev pab tu - nws cov penter {}}} lub sij hawm} lub sij hawm corrosion. Qhov no ua rau cov nqi ntau lawm, txhim kho cov tsos, thiab kev ntseeg tau zoo dua hauv cov khoom lim.
Cov tswv yim cuam tshuam thiab sau cov ntsiab lus
Thaum ob qho tib si 316 thiab 316L stainless hlau hlau meshes Qhia ntau yam tshuaj lom neeg ua rau tus cwj pwm txawv nyob rau hauv tiag- ntiaj teb cov xwm txheej. Nkag siab txog cov neeg sib txawv no pab engineers, cov neeg yuav khoom xaiv cov khoom siv rau lawv cov ntawv thov}}} lub zog, corrosion tsis kam, thiab fabrication yooj yim.
Kev Ua Haujlwm Sib Piv
| Cov cuab yeej / Feature | 316 Stainless Hlau | 316L stainless hlau | Kev saib xyuas tseem ceeb |
|---|---|---|---|
| Cov ntsiab lus carbon | Txog li 0.08% | Mus txog 0.03% | Tsawg dua cov pa roj 316L tiv thaiv carbide nag lossis daus |
| Corrosion Kuj (Dav) | Zoo tshaj | Zoo tshaj | 316L tsis kam corrosion zoo dua, tshwj xeeb yog nyob rau hauv welds |
| Kuj rau pitting (Chlorides) | Siab | Siab heev | 316L nyiam hauv qab ntsev lossis chloride -} nplua nuj ib puag ncig |
| Mechanical zog (tensile) | Me ntsis siab dua | Me ntsis qis dua | 316 yog marginally muaj zog dua tab sis tsawg du |
| Firrility thiab Ductility | Zoo | Zoo tshaj | 316L tau yooj yim dua kos, weave, thiab weld |
| Hwj txwv | Yuav tsum tau tshaj tawm - weld annealing | Tsis muaj annealing yuav tsum tau | 316L ua kom yooj yim tsim thiab txo tus nqi |
| Deg tas ruaj khov | Yuav discolor nyob ze welds | Khaws cia ci ci | 316L tswj kev ncaj ncees ntev dua |
| Tus nqi | Me ntsis qis dua | Me ntsis siab dua | 316L tus nqi rho tawm ntawm lub neej ntev dua |
| Raug Mesh Siv | Tsis - welded Mesh panels, kws kos duab kos duab | Welded cov ntxaij lim dej, cov lim hydraulic lim dej, tshuaj lim |
Piv txwv li, hauvRoj Roj Lim Kev Lag Luam Hydraulic Roj, 316L Mesh ua hauj lwm zoo li kev txhawb nqa ruaj khov rau epoxy {}} coated mesh qauv, tswj kev cai lij choj kev ntseeg siab thiab tshuaj lom neeg. Hauv kev sib piv, 316 tej zaum yuav raug xaiv rauTsis - welded Cheebtsam, qhov twg cov tshuab muaj zog thiab raug nqi {- efficiency tseem ceeb tshaj post- vuam corrosion.
HauvTubrog nkoj lossis ntug dej hiav txwv, 316L ua yeeb yam zoo dua ntawm chloride nres, ua rau nws ntev- cov ntxaij cov ntxaij vab tshaus ntev lossis cov kws kos duab kws kos duab kom raug cov tshuaj ntsev. Hloov siab, hauvKev muaj ib puag ncigQhov twg kis tau yog ib nrab, 316 tseem muab qhov sib npaug muaj zog ntawm tus nqi thiab corrosion tsis kam.
Zuag qhia tag nrho, kev xaiv ntawm 316 thiab 316L yog nyob ntawm cov haujlwm ua haujlwm: yog tias muaj tshuaj lom neeg mob siab, yog kev koom tes nrog, 316L ua kom muaj kev saib xyuas ntev. Thaum lub zog thiab tensile lub zog yog qhov tseem ceeb, 316 tseem nyob twj ywm.
Lub ntsiab
Cov tshuaj lom neeg muaj pes tsawg leeg thiab microstructure ntawm 316 thiab 316L stainless hlau xaim mesh ua lub hauv paus ntawm lawv cov yam ntxwv txawv. Kev txo me me hauv cov ntsiab lus carbon compulle {}}}} ntawm 316% hauv 316 rau 0.03% hauv 316% rau cov tseem ceeb hauv kev ua kom corrosion thiab weldability.
To taub cov lus txawv no tsis yog kev kawm. Rau cov engineers, cov qauv tsim khoom, thiab cov tuam ntxhab, nws cuam tshuam ncaj qhalim zoo, kev pabcuam lub neej, thiab txij nkawm mus ncigCov. Seb puas tau tsim ntau - txheej txheej epoxy- coated hlau ntaub, ntev} - lub sij hawm kev ua tau zoo.
Hauv ntej:
Siv 316Lthaum corrosion tsis kam thiab vuam ruaj khov yog qhov tseem ceeb.
Siv 316Thaum kho tshuab zog thiab tus nqi ua haujlwm tau txais txiaj ntsig ua ntej.
Los ntawm kev xaiv cov ntaub ntawv xaiv nrog kev ua haujlwm ib puag ncig, cov tuam ntxhab tuaj yeem xa tauSiab dua - Zoo, Ntau Lub Tshuab Stainless Hlau Hlau Meshuas ntsib cov qauv kev lag luam thoob ntiaj teb.