Ntau tus engineers los ntawm keeb kwm ntawm kev siv 316L stainless hlau rau txhua yam. Nws ua haujlwm hauv dej tshiab, tshuaj nroj tsuag, thiab ua zaub mov. Tab sis dej hiav txwv txawv. Chlorides tawm tsam stainless hlau. Cov txheej txheem passive uas tiv thaiv 316L tawg nyob rau hauv lub xub ntiag ntawm chlorides, tshwj xeeb tshaj yog nyob rau hauv crevices los yog nyob rau hauv deposits.C70600 tau tsim tshwj xeeb rau cov dej hiav txwv. Nws tsis muaj qhov teeb meem no.
Cov tshuaj sib txawv ntawm C70600 thiab 316L yog dab tsi?
| Element | C70600 (%) | 316L (%) |
|---|---|---|
| Copper (Cu) | 88% min | 0% |
| Nickel (Ni) | 9.0 – 11.0 | 10.0 – 14.0 |
| Hlau (Fe) | 1.0 – 1.8 | 62-72% (sib npaug) |
| Chromium (Cr) | 0% | 16.0 – 18.0 |
| Manganese (Mn) | 1.0 max | 2.0 max |
| Molybdenum (hli) | 0% | 2.0 – 3.0 |
| Cov pa roj carbon (C) | 0.05 max | 0.03 max (L qib) |
| Sulfur (S) | 0% | 0.03 max |
Yuav ua li cas lawv tiv thaiv corrosion:
C70600: ua ib zaj duab xis nickel-iron oxide. Kev kho tus kheej. Tso cov tooj liab ions uas tiv thaiv biofouling.
316L: ua ib zaj duab xis chromium oxide. Passive hauv dej huv. Ua rau hauv chlorides (seawater).
C70600 thiab 316L ua li cas hauv kev pabcuam dej hiav txwv tiag?
C70600 feem ntau kav ntev li 20-30 xyoo hauv dej hiav txwv. 316L feem ntau ua tsis tiav hauv 2-5 xyoos vim yog pitting lossis crevice corrosion.
| Qhov xwm txheej | C70600 | 316L |
|---|---|---|
| Cov dej hiav txwv ntws huv si | Zoo heev (20-30 xyoo) | Zoo tab sis pitting txaus ntshai |
| Dej hiav txwv | Zoo (nrog qee qhov kev pheej hmoo) | Tsis zoo (crevice corrosion) |
| Dej hiav txwv nrog xuab zeb | Nruab nrab | Tsis zoo (erosion + pitting) |
| Sulfide polluted dej hiav txwv | Tsis zoo (pitting) | Tsis zoo (pitting) |
| Crevices (hauv qab gaskets, deposits) | Zoo | Tsis zoo (crevice corrosion) |
| Biofouling kuj | Zoo heev (tooj liab ions) | Tsis zoo (barnacles txuas) |
Cov piv txwv ntawm lub ntiaj teb tiag:
Nkoj tau siv C70600 piping rau 30+ xyoo nrog corrosion tsawg.
316L piping ntawm tib lub nkoj feem ntau tsim cov qhov dej ntws tawm hauv 2-3 xyoos nyob rau hauv qhov chaw ruaj khov lossis qis qis.
Cov nroj tsuag fais fab uas sim 316L hauv seawater condensers hloov rov qab mus rau C70600 tom qab rov ua tsis tiav.
Dab tsi yog pitting corrosion thiab vim li cas 316L raug kev txom nyem los ntawm nws hauv dej hiav txwv?
Pitting yog ib qho chaw ntawm corrosion uas tsim cov qhov me me (qhov) hauv cov hlau . 316L qhov dej hauv dej hiav txwv vim cov chlorides ua rau nws cov oxide tiv thaiv zaj duab xis.
Yuav ua li cas pitting tshwm sim ntawm 316L:
Chloride ions hauv dej hiav txwv tawm tsam chromium oxide zaj duab xis
Cov yeeb yaj kiab tawg ntawm qhov chaw tsis muaj zog (suav nrog, khawb, crevices)
Ib lub qhov me me tsim thiab loj hlob zuj zus
Lub qhov dej ua ib lub qhov (pinhole leak)
Vim li cas C70600 tsis pit tib txoj kev:
C70600's tiv thaiv zaj duab xis yog txawv (nickel-hlau oxide)
Chlorides tsis tawm tsam zaj duab xis no
Yog tias zaj duab xis puas lawm, nws tus kheej kho sai sai
C70600 thiab 316L sib piv li cas?
C70600 feem ntau kim dua 316L ntawm ib-kg, tab sis tus nqi ntawm lub neej yog qis dua vim nws kav ntev dua.
| Tus nqi tsim nyog | C70600 | 316L |
|---|---|---|
| Cov khoom raug nqi ib kg | Medium (lub hauv paus) | Tsawg (20-30% tsawg) |
| Cia siab tias yuav muaj sia nyob hauv dej hiav txwv | 20-30 xyoo | 2-5 xyoos |
| Hloov zaus | Ib zaug (tsis tau thaum lub neej khoom siv) | Txhua txhua 3-5 xyoos |
| Tus nqi kaw rau qhov tsis ua haujlwm | Tsawg (tsis tshua muaj) | Siab (ntau zaus) |
| Tus nqi tag nrho lifecycle (30 xyoo) | qis | Ntau dua |
Piv txwv xam rau lub tshav kub exchanger nrog 10,000 raj:
Tus nqi pib tube: C70600=100,000 USD, 316L=75,000 USD (C70600 yog 25% ntxiv)
Hloov tus nqi (316L nkaus xwb): 75,000 USD txhua 5 xyoos x 6 hloov=450,000 USD
Tag nrho 30-xyoo tus nqi: C70600=100,000 USD, 316L=525,000 USD
Koj tseem yuav xaiv qhov twg 316L dhau C70600?
316L yog qhov kev xaiv zoo dua hauv cov dej tshiab, kev pabcuam tshuaj lom neeg, lossis kev siv kub kub uas C70600 tsis haum.
Daim ntawv thov zoo rau 316L:
Cov dej txias txias (tsis muaj chlorides)
Cov nroj tsuag tshuaj (tooj liab tsis sib haum nrog qee cov tshuaj)
Kev pabcuam kub siab (siab dua 80 degree, C70600 corrodes sai)
Ntxuav, ntws dej tsis muaj stagnation
Cov txheej txheem uas ntws thiab qhuav thaum tsis siv
Tsis txhob siv 316L hauv:
Dej hiav txwv dej (pitting)
Crevices (gaskets, flanges, deposits)
Tsis tshua muaj dej ntws (hauv qab 1 m / s)
Dej hiav txwv nrog xuab zeb los yog khib nyiab
Cov kab ke uas tsis tuaj yeem kuaj xyuas tsis tu ncua
FAQ
Q1: Qhov twg zoo dua rau dej hiav txwv, C70600 lossis 316L?
C70600 zoo dua rau feem ntau cov ntawv thov dej hiav txwv. Nws kav ntev li 20-30 xyoo yam tsis muaj pitting. 316L qhov dej hauv dej hiav txwv, tshwj xeeb tshaj yog nyob rau hauv qhov chaw ruaj khov lossis qhov sib tw.Tib lub sijhawm 316L zoo dua yog nyob rau hauv dej tshiab, kev pabcuam tshuaj lom neeg, lossis cov ntawv thov siab dua 80 degree. Rau cov dej hiav txwv txias thiab kav dej, xaiv C70600.
Q2: Puas yog 316L xeb hauv dej hiav txwv?
316L tsis "xeb" zoo li carbon steel, tab sis nws ua qhov. Pitting tsim cov qhov me me uas xau.Cov hlau nws tus kheej tsis tig mus rau hauv cov xim liab. Hloov chaw, koj tau txais qhov me me, qhov tob tob. Cov qhov no nyuaj rau pom mus txog thaum lawv mus txog ntawm phab ntsa. Thaum koj pom qhov xau, lub raj twb ua tsis tiav.
Q3: Vim li cas qee tus neeg siv 316L hauv dej hiav txwv yog tias nws pits?
Lub neej luv luv lossis tsis muaj kev paub. Qee qhov haujlwm tsuas yog xav tau 2-3 xyoos ntawm lub neej. Rau lub sijhawm ntawd, 316L tuaj yeem muaj sia nyob.Lwm cov haujlwm siv 316L vim tias tus engineer paub ntau dua ntawm cov hlau tsis muaj steel thiab tsis paub txog C70600. Ob peb siv 316L vim tias tus nqi pib qis dua. Tag nrho cov no yog cov laj thawj phem rau kev pabcuam dej hiav txwv ntev.
Q4: Kuv puas tuaj yeem siv 316L rau cov kav dej hiav txwv uas ntws tsis tu ncua?
Tej zaum, tab sis tseem muaj kev pheej hmoo ntawm flanges, li qub, thiab qhov chaw ntws qis.Nruam siab ntws (ntau tshaj 1.5 m / s) txo qhov kev pheej hmoo ntawm pitting. Txawm li cas los xij, txhua qhov flange gasket tsim ib qho crevice. Txhua lub valve muaj qhov chaw qis qis. Yog tias koj yuav tsum siv 316L, tshuaj xyuas cov crevices txhua xyoo. C70600 tseem yog qhov kev xaiv nyab xeeb dua.
Q5: Tus nqi ntawm C70600 piv rau 316L xyoo 2026 li cas?
C70600 feem ntau yog 20-40% kim dua 316L ntawm ib-kg.Tus nqi tseeb txawv nrog nickel thiab chromium kev lag luam. Thaum npib tsib xee siab, C70600 yuav kim dua. Thaum chromium (rau 316L) siab, qhov sib txawv yuav nqaim. Ib txwm tau txais cov lus hais tam sim no. Tab sis nco ntsoov tias tus nqi them ua ntej tsis yog tag nrho zaj dab neeg. Lifecycle tus nqi tseem ceeb dua.
Q6: Puas yog C70600 lossis 316L puas muaj biofouling tsis kam?
C70600 zoo dua. Copper ions tso tawm los ntawm C70600 tiv thaiv barnacles, mussels, thiab algae los ntawm txuas.316L tsis tso cov biocides. Marine kev loj hlob txuas rau 316L nto. Qhov kev loj hlob no tsim crevices hauv qab, uas ua rau pitting. Rau cov dej hiav txwv uas tsis tuaj yeem ntxuav tau ntau zaus, C70600 yog tus yeej meej.
Q7: Kuv puas tuaj yeem txuas C70600 rau 316L?
Yog lawm, tab sis siv lub siab nickel muab tub lim hlau (ERNiCr-3 lossis zoo sib xws) thiab paub txog galvanic corrosion.Lub welded sib koom nws tus kheej zoo. Txawm li cas los xij, thaum koj koom nrog ob qhov sib txawv ntawm cov dej hiav txwv, qhov tsawg dua noble corrodes sai dua. Hauv C70600-316L khub, C70600 tsis tshua muaj suab npe. Nws yuav corrode nyiam nyob ze ntawm lub weld. Cais ob cov ntaub ntawv nrog ib tug spool piece los yog txheej.
Q8: Cov khoom siv twg muaj zog dua, C70600 lossis 316L?
316L muaj zog dua . 316L tensile zog yog li 485 MPa yam tsawg kawg nkaus. C70600 yog 310 MPa yam tsawg kawg nkaus.Txawm li cas los xij, lub zog tsis tshua muaj qhov txwv rau cov raj dej hiav txwv. Corrosion kuj yog. Lub raj muaj zog uas pits thiab xau yog tsis muaj txiaj ntsig. Rau cov kav dej siab, ob qho tib si muaj lub zog txaus. Rau cov cua kub exchanger raj, lub zog tsis yog thawj qhov kev txhawj xeeb.
Q9: Puas yog C70600 lossis 316L ua haujlwm zoo dua ntawm qhov kub thiab txias?
316L ua haujlwm zoo dua 80 degree. C70600 corrosion tus nqi nce sharply saum 60 degree.Yog tias koj cov dej hiav txwv kub siab tshaj 80 degree, C70600 tsis pom zoo . 316L ua tau zoo dua ntawm qhov kub siab, tab sis tseem muaj kev pheej hmoo pitting. Tshaj 80 degree, xav txog titanium es tsis txhob ntawm cov hlau.
Q10: Cov khoom siv twg yooj yim dua rau vuam?
316L yooj yim rau vuam rau feem ntau welders vim lawv paub cov hlau tsis muaj steel.C70600 xav tau cov txheej txheem sib txawv. Txawm li cas los xij, ob qho tib si yog weldable nrog TIG lossis MIG. C70600 tsis xav tau preheat rau nyias phab ntsa raj . 316L tsis xav tau preheat ib yam. Qhov sib txawv tseem ceeb yog muab tub lim hlau (ERCuNi rau C70600, ER316L rau 316L) thiab tiv thaiv roj.
Q11: Kuv puas tuaj yeem siv 316L rau lub seawater txias condenser hauv lub tshuab fais fab?
Qee cov nroj tsuag tau sim. Feem ntau tau hloov mus rau C70600 tom qab ua tsis tiav.Ob peb tsob nroj uas huv heev, tsis tu ncua ntws, dej hiav txwv txias tau muaj kev vam meej nrog 316L. Tab sis feem ntau cov kev paub pitting ntawm lub raj inlets, hauv qab raj ntawv crevices, thiab nyob rau hauv qhov chaw tsis tshua muaj. Rau qhov tseem ceeb condenser, qhia C70600.
Q12: Cov hlau twg yog qhov zoo dua rau kev yaig los ntawm cov xuab zeb hauv dej hiav txwv?
Tsis yog qhov zoo, tab sis C70600 zoo dua me ntsis. Xuab zeb erodes ob yam khoom.Yog tias koj cov dej hiav txwv muaj xuab zeb, xav txog titanium lossis roj hmab-lined piping. C70600 muaj ductility siab dua 316L, uas pab nws nqus tau qee qhov cuam tshuam. Tab sis sustained xuab zeb yaig yuav hnav los ntawm ob qho tib si. Tsis txhob xuab zeb yog tias ua tau.
Peb Kev Xeem
Chemistry(Sspectrometer, ASTM E1473) → Ni 9-11%, Fe 1.0-1.8%
Tensile(rub kom tawg, ASTM E8) → 310 MPa yam tsawg kawg nkaus
Flatten(squeeze nplhaib rau 3x phab ntsa, ASTM B968) → tsis muaj kab nrib pleb
Flare(30℃cone expansion, ASTM B969) → tsis muaj splits
Eddy tam sim no(100% ntawm cov raj, ASTM E243) → tsis lees paub cov teeb liab
Koj tau txais dab tsi
Mill Test Report (MTR) nrog txhua qhov kev txiav txim
Traceable los ntawm tshav kub tooj
Kev tshuaj xyuas thib peb muaj (SGS, BV, Lloyds)
Peb Ntim
cev
Yas cap ntawm ob qhov kawg
VCI daim ntawv sab hauv (raws li thov)
pob
Shrink qhwv (seals tawm noo noo)
Hlau hlua (4-6 pluaj)
Ntoo rooj plaub rau qhov loj me me
Pallet + steel rau tus qauv 6m
daim ntawv lo
Qib (C70600/90/10)
Size (OD x BWG)
Thaum tshav kub kub tooj (traceable)
Qhov ntau thiab ntev
Peb Lub Hoobkas Khoom
| Chaw nres tsheb | Khoom siv | Peb ua dab tsi |
|---|---|---|
| 1 | Melting rauv (3x, 5 tons) | Ua kua tooj liab nickel alloy |
| 2 | Nruam caster (2 kab) | Khoom siv 80-220mm |
| 3 | Extrusion xovxwm (2500T & 3500T) | Hollow lub plhaub |
| 4 | Pilger zeb (4 units) | Txo txoj kab uas hla |
| 5 | Kos lub rooj zaum (8 kab) | Kawg OD thiab phab ntsa |
| 6 | Annealing rauv (4 units, 600 degree) | Mos, khoov lub raj |
| 7 | Straightener & cutter (3 kab) | Ncaj, txiav kom ntev |
| 8 | Eddy tam sim no tester (2 lub tshuab) | 100% kev tshuaj xyuas |
Peb Cov Khoom Muag
| Qeb | Cov duab | Qhov ntau thiab tsawg | Qib |
|---|---|---|---|
| Tube | Round, square, coil, grooved | OD 3-219 hli | C11000, C12200, C70600, C71500, C26000 |
| Qws | Hloov, hex, square | Dia 2-120mm | C11000, C36000, C14500, C18200 |
| Hlau | Round, tiaj, tinned | Dia 0.1-12mm | C11000, C16200, C17200 |
| Sawb | Coiled, txiav | 0.05-3 hli | C11000, C19400, C70250 |
| Ntawv nyiaj | Daim ntawv nyias | 0.01-0.1 hli | C11000, C10200 |
| CNC qhov chaw | Bushings, flanges, txiv ntseej | Kev cai | C36000, C63000, C70600 |
