1. Q: Lub hauv paus muaj pes tsawg leeg thiab metallurgical qauv ntawm tooj liab-Nickel 90/10 yog dab tsi, thiab ua li cas cov yam ntxwv no ua rau nws nyiam cov khoom siv rau kev siv dej hiav txwv thiab dej hiav txwv?
A:Copper-Nickel 90/10 (UNS C70600) yog ib qho tooj liab alloy uas muaj kwv yees li 90% tooj liab thiab 10% npib tsib xee, nrog rau kev tswj xyuas zoo ntxiv ntawm hlau (1.0-1.8%) thiab manganese (txog 1.0%). Cov ntsiab lus hlau yog qhov tseem ceeb tshwj xeeb; it enhances the material's resistance to impingement corrosion (erosion-corrosion) by promoting the formation of a dense, adherent, protective surface film that is essential for performance in flowing seawater.
Cov qauv metallurgical yog ib qho -theem kev daws teeb meem ntawm nickel hauv tooj liab, ua rau lub ntsej muag -centered cubic (FCC) lattice. Cov qauv no muab ductility zoo heev, zoo fabricability, thiab superior corrosion kuj nyob rau hauv marine ib puag ncig. Piv rau 70/30 tooj liab-nickel alloy, 90/10 muaj lub zog qis dua tab sis zoo dua thermal conductivity thiab txo nqi qis, ua rau nws siv ntau tshaj tooj liab-nickel alloy rau seawater piping systems.
Cov txheej txheem tiv thaiv corrosion ntawm tooj liab-Nickel 90/10 yog tus kheej- tiv thaiv thiab tshwj xeeb ntawm cov khoom siv hlau. Thaum raug cov dej hiav txwv huv si, cov khoom siv sai sai ua rau nyias, ua raws, tiv thaiv zaj duab xis uas yog feem ntau ntawm cuprous oxide (Cu₂O) nrog txheej txheej ntawm cov tooj liab nyuaj -nickel- hlau oxy-hydroxides. Cov yeeb yaj kiab no, feem ntau hu ua "kev tiv thaiv patina," nthuav tawm kev ruaj ntseg zoo kawg nkaus hauv cov dej hiav txwv ntws thiab nws tus kheej - kho yog tias muaj kev puas tsuaj. Cov ntsiab lus hlau (1.0–1.8%) yog qhov tseem ceeb rau kev txhim kho qhov adhesion, ceev, thiab kev tiv thaiv ntawm zaj duab xis no, tshwj xeeb tshaj yog nyob rau hauv siab -ceev ceev qhov twg yaig{14}}corrosion yog ib qho kev pheej hmoo.
Kev sib xyaw ua ke ntawm cov yam ntxwv no ua rau tooj liab-Nickel 90/10 yog cov khoom nyiam rau ntau yam kev siv dej hiav txwv thiab ntug hiav txwv:
Seawater txias tshuab rau fais fab nroj tsuag, LNG terminals, thiab refineries
Cov dej tua hluav taws nyob rau ntawm ntug dej hiav txwv platforms thiab marine nkoj
Desalination cog piping thiab tshav kub exchangers
Shipbuilding hull piping, suav nrog bilge, ballast, thiab firemain systems
Coastal industrial water intake thiab discharge kab
Tsis tas li ntawd, tooj liab-Nickel 90/10 qhia tau zoo heev tiv thaiv biofouling. Cov ntsiab lus tooj liab tso tawm cov kab ntawm tooj liab ions uas cuam tshuam qhov txuas ntawm barnacles, mussels, thiab lwm yam kab mob marine. Qhov kev tiv thaiv biofouling no tswj kev ua haujlwm tau zoo, txo cov nqi siv, thiab tshem tawm qhov xav tau ntawm cov coatings kim kim los yog ntxuav cov kev pab cuam hauv lub neej ua haujlwm.
2. Q: Dab tsi yog qhov tseem ceeb ntawm kev sib txuas rau tooj liab -Nickel 90/10 welded yeeb nkab, tshwj xeeb tshaj yog hais txog kev xaiv hlau muab tub lim, kev sib koom ua ke, thiab kev tswj cov cua sov?
A:Vuam Copper-Nickel 90/10 yuav tsum muaj cov txheej txheem tshwj xeeb thiab kev tswj xyuas cov txheej txheem kom ua tiav lub suab, corrosion-cov welds tiv taus uas ua tau zoo sib npaug rau cov hlau hauv cov dej hiav txwv. Cov khoom siv thermal conductivity siab tshaj -kwv yees li 8-10 npaug ntawm austenitic stainless hlau- thiab nws qhov kev nkag siab zoo rau kev sib kis xav tau kev saib xyuas zoo thoob plaws hauv cov txheej txheem vuam.
Filler hlau xaiv:Tus qauv muab tub lim hlau rau vuam 90/10 tooj liab -nickel yogAWS A5.7 Class ERCuNi(kev sib xyaw ua ke). Qhov muab tub lim no muaj kwv yees li 65-70% tooj liab, 29-33% nickel, 0.5-1.5% hlau, thiab 0.5-1.5% manganese. Thaum cov hlau muab tub lim muaj cov ntsiab lus nickel ntau dua li cov hlau hauv paus (30% vs{11}}%), qhov sib xyaw ua ke no ua kom muaj kev sib raug zoo ntawm electrochemical, tiv thaiv galvanic corrosion ntawm weld interface, thiab muab cov pas dej zoo sib xws. Rau phau ntawv shielded hlau arc vuam (SMAW),AWS A5.6 Class ECuNielectrodes yog siv.
Kev npaj sib koom:Ua ntej vuam, kev tu nruj yog qhov tseem ceeb. Txhua qhov chaw nyob hauv 50 hli (2 ntiv tes) ntawm thaj chaw vuam yuav tsum tau ua kom huv si siv cov hlau tsis muaj hlau txhuam lossis cov cuab yeej ua haujlwm siab kom tshem tawm cov oxides, zeb nplai, thiab cov kab mob ntawm qhov chaw. Qhov no yuav tsum tau ua raws li cov tshuaj degreasing nrog acetone, isopropyl cawv, los yog ib qho zoo sib xws uas tsis yog -chlorinated hnyav. Chlorinated cov kuab tshuaj yog nruj me ntsis zam, raws li cov chloride residual tuaj yeem ua rau corrosion hauv kev pabcuam. Kev sib koom ua ke feem ntau siv ib zaug -V lossis ob npaug -V zawj nrog lub hauv paus qhov sib txawv ntawm 2-3 hli kom haum rau cov khoom siv thermal conductivity thiab ua kom tiav kev nkag mus.
Vuam txheej txheem thiab cua sov input tswj:Gas tungsten arc welding (GTAW/TIG) yog cov txheej txheem nyiam rau cov hauv paus hla thiab nyias - cov yeeb nkab phab ntsa, muab cov cua sov tso rau hauv kev tswj xyuas thiab cov khoom siv vuam zoo. Gas hlau arc vuam (GMAW/MIG) tej zaum yuav raug siv los sau cov ntawv hla thiab cov phab ntsa tuab los txhim kho cov nqi tso nyiaj.
Cov parameter tseem ceeb muaj xws li:
Preheating:Feem ntau tsis tas yuav tsum tau tshwj tsis yog tias qhov ntsuas kub ntawm qhov ntsuas kub qis dua 10 ° C (50 ° F) lossis noo noo tam sim no
Interpass kub:Kev tswj xyuas nruj me ntsis hauv qab 150 ° C (300 ° F) kom tsis txhob kub tawg, kev loj hlob ntau dhau, thiab poob ntawm cov khoom siv kho tshuab
Tiv thaiv Gas:100% argon rau GTAW; argon nrog 1-2% oxygen rau GMAW los txhim kho arc stability thiab ntub dej
Rov qab ntxuav:Inert gas purging ntawm lub hauv paus sab yog yuav tsum tau los tiv thaiv oxidation, ua kom tiav fusion, thiab tuav cov yeeb yaj kiab tiv thaiv- tsim cov yam ntxwv ntawm cov vuam
Ncej -welding kev kho mob:Tsis zoo li qee cov tooj liab alloys, tooj liab -Nickel 90/10 feem ntau tsis xav tau tom qab- vuam cua sov. Txawm li cas los xij, rau kev pabcuam dej hiav txwv tseem ceeb,post-welding tu thiab passivationyog qhov tseem ceeb. Weld cheeb tsam yuav tsum tau muab ntxuav kom huv si kom tshem tawm cov nplais, oxides, thiab cua sov tint. Qhov no feem ntau ua tiav los ntawm pickling hauv 10-15% sulfuric acid tov tom qab ntxuav nrog dej tshiab. Cov txheej txheem no rov ua kom lub ntsej muag tiv thaiv zaj duab xis thiab ua kom ntseeg tau tias thaj chaw weld muaj tib yam corrosion kuj zoo li lub hauv paus hlau.
Welder kev tsim nyog:Welders ua haujlwm ntawm tooj liab-Nickel 90/10 yuav tsum tsim nyog raws li ASME Tshooj IX lossis AWS D1.6, nrog rau kev tsim nyog ntawm tooj liab-nickel alloys. Cov khoom siv cov yam ntxwv tshwj xeeb ntawm cov pas dej sib txuas- suav nrog cov kua dej siab thiab cov cua sov sai sai- yuav tsum muaj cov txuj ci tshwj xeeb uas tsis tau pom los ntawm kev tsim nyog ntawm carbon steel lossis stainless hlau ib leeg.
3. Q: Hauv cov dej hiav txwv thiab ntug hiav txwv dej hiav txwv, Copper zoo li cas -Nickel 90/10 welded yeeb nkab muab cov khoom siv lwm yam, thiab nws cov kev txwv yog dab tsi?
A:Copper-Nickel 90/10 nyob rau hauv ib qho chaw tshwj xeeb ntawm cov khoom siv rau kev pabcuam dej hiav txwv, muab kev sib xyaw ua ke ntawm kev tiv thaiv corrosion, biofouling tsis kam, fabricability, thiab lifecycle economics uas feem ntau tshaj lwm cov ntaub ntawv rau feem ntau ntawm daim ntawv thov.
Advantages ntawm lwm cov ntaub ntawv:
| Khoom siv | Kev sib piv nrog tooj liab -Nickel 90/10 |
|---|---|
| Cov pa roj carbon steel | Cov pa roj carbon steel yuav tsum tau coatings, cathodic tiv thaiv, thiab corrosion pub; Feem ntau ua tsis tiav hauv 5–10 xyoo hauv dej hiav txwv. 90/10 muab 20–{5}} xyoo ntawm kev saib xyuas- kev pabcuam dawb yam tsis muaj txheej txheej. |
| Austenitic stainless hlau (304/316) | Cov hlau tsis muaj hlau tsis muaj kev cuam tshuam rau crevice corrosion, pitting, thiab chloride stress corrosion cracking nyob rau hauv seawater . 90/10 qhia tsis tau rau SCC thiab muaj superior crevice corrosion kuj. Tsis tas li ntawd, 90/10 muab biofouling tsis kam. |
| Titanium | Titanium muaj superior corrosion kuj tab sis tus nqi 3-5 npaug ntau dua 90/10. Titanium qhov qis thermal conductivity thiab tshwj xeeb vuam yuav tsum tau ntxiv nqi. Rau feem ntau ntawm cov dej hiav txwv, 90/10 muab tus nqi -zoo tshuav. |
| 70/30 tooj liab -Nickel | 90/10 muaj zog me ntsis thiab yaig- corrosion kuj tshaj 70/30 tab sis yog tus nqi ntau dua - zoo. Rau kev nrawm txog 3 m / s, 90/10 yog qhov kev xaiv tus qauv. |
| Galvanized hlau | Galvanized coatings yog siv sai heev hauv dej hiav txwv, ua rau lub hauv paus hlau corrosion nyob rau hauv 2-5 xyoo. 90/10 muab kev pab cuam ntau xyoo yam tsis muaj txheej txheej degradation. |
Qhov zoo ntawm 90/10 welded yeeb nkab:
Corrosion kuj:Kev tiv thaiv zoo heev rau kev ua kom zoo corrosion, crevice corrosion, thiab kev ntxhov siab corrosion tawg hauv dej hiav txwv huv
Biofouling kuj:Copper ion tso tawm tiv thaiv cov kab mob marine txuas, tswj kev ua haujlwm txaus
Fabricability:Zoo heev weldability thiab formability; tuaj yeem tsim tau yooj yim siv cov txheej txheem txheej txheem
Tus nqi -effectiveness:Tus nqi pib qis dua titanium, 70/30 tooj liab -nickel, thiab qib siab - qib stainless hlau
Cov ntaub ntawv pov thawj:Ntau xyoo ntawm kev ua tiav kev pabcuam hauv naval, kev lag luam marine, thiab offshore daim ntawv thov
Kev txwv thiab ceev faj:
| Kev txwv | Ceev faj |
|---|---|
| Kev txwv ceev | Qhov siab tshaj plaws tau pom zoo yog kwv yees li 3 m / s (10 ft / s) hauv dej hiav txwv huv; Kev tshaj tawm siab dua tuaj yeem ua rau yaig-corrosion, tshwj xeeb tshaj yog nyob rau hauv cov dej ntws ntws. Rau qhov nrawm dua, 70/30 tooj liab-nickel yog nyiam. |
| Sulfide rhiab heev | Copper-Nickel 90/10 yog qhov ua rau muaj kev cuam tshuam sai rau hauv cov dej qias neeg lossis sulfidogenic (xws li chaw nres nkoj nrog cov pa phem). Nyob rau hauv ib puag ncig zoo li no, yuav tsum muaj lwm yam khoom siv lossis kev kho dej kom zoo. |
| Stagnant dej tej yam kev mob | Lub sijhawm ntev stagnation tuaj yeem ua rau muaj kev cuam tshuam hauv zos lossis biofouling pib. Cov txheej txheem yuav tsum tau tsim kom tsis txhob ncua sij hawm nyob twj ywm, lossis kev kho biocide yuav tsum tau ua. |
| Galvanic compatibility | 90/10 yog zoo rau cov hlau thiab txhuas tab sis anodic rau titanium thiab siab -nickel alloys. Kev sib cais galvanic kom raug lossis kev tiv thaiv cathodic yog xav tau thaum txuas nrog cov ntaub ntawv zoo dua. |
| Kev txwv kub | Feem ntau haum rau kwv yees li 120 ° C (250 ° F). Saum toj no kub, txhua yam khoom degrade thiab corrosion kuj nce. |
Rau feem ntau ntawm cov dej hiav txwv dej hiav txwv -xws li cov dej tua hluav taws, dej txias, ballast, thiab bilge systems-Copper-Nickel 90/10 welded yeeb nkab muaj qhov zoo tshaj qhov sib npaug ntawm kev ua tau zoo, kev ntseeg siab, thiab tus nqi, muab cov kev txwv no raug hwm hauv kev tsim thiab kev ua haujlwm.
4. Q: Dab tsi yog qhov tseem ceeb ntawm kev lees paub zoo thiab kev kuaj xyuas tsis muaj kev puas tsuaj (NDE) rau tooj liab -Nickel 90/10 welded yeeb nkab hauv siab- muaj cov kev pabcuam hauv hiav txwv?
A:Kev ncaj ncees ntawm tooj liab-Nickel 90/10 welded yeeb nkab nyob rau hauv qhov tseem ceeb marine thiab offshore daim ntaub ntawv yuav tsum tau nruj me ntsis kev ruaj ntseg thoob plaws hauv manufacturing thiab fabrication. Cov NDE hauv qab no thiab cov txheej txheem xeem yog cov qauv kev lag luam ua haujlwm kom ntseeg tau qhov kev ntseeg tau ntawm weld seam thiab kev ua haujlwm ntev -.
Manufacturing specifications:Welded yeeb nkab feem ntau yog tsim los ntawm ibASTM B 467 Cov khoom siv(Standard Specification for Welded Copper-Nickel Pipe) los yogASTM B 608 Cov khoom lag luam(Standard Specification for Welded Copper-Nickel Pipe rau General Corrosive Service). Rau kev siv cua sov exchanger tubing,ASTM B111(Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes) yog hais txog, txawm hais tias welded raj tau nce siv rau qee yam kev siv.
Nondestructive Exam (NDE) yuav tsum muaj:
| Txoj Kev Xeem | Daim ntawv thov | Kev lees txais |
|---|---|---|
| 100% Kev Ntsuas Hluav Taws Xob (RT) | Longitudinal weld seam | AWS D1.6/D1.6M or ASME Section VIII, UW-51; tsis muaj kab nrib pleb, tsis muaj fusion, lossis porosity tshaj qhov txwv |
| Liquid Penetrant Testing (PT) | Weld seam nto (ID thiab OD) | ASME Tshooj V, Tshooj 6; tsis muaj linear lossis round indications |
| Kev Ntsuas Hydrostatic | Txhua lub kav dej ntev | 1.5 × tsim siab rau ASTM B467; tuav rau yam tsawg kawg nkaus 5-10 vib nas this; tsis muaj dej paug |
| Eddy Current Testing (ECT) | xaiv tau; rau kev siv tubing | ASTM E243; calibration tiv thaiv cov qauv siv nrog drilled qhov los yog notches |
| Kev kuaj ultrasonic (UT) | xaiv tau; rau tuab-phab ntsa lossis cov ntawv thov tseem ceeb | ASME Tshooj V, Tshooj 4; nrhiav pom ntawm laminations los yog volumetric defects |
Kev ntsuas hluav taws xob ntsuas ntsuas:Copper-Nickel alloys muaj qhov ntom ntom zoo ib yam li cov hlau (kwv yees li 8.9 g / cm³), tso cai rau cov txheej txheem X-ray lossis gamma ray txheej txheem. Txawm li cas los xij, cov khoom siv nplej tuaj yeem tsim cov duab hluav taws xob mottled; Kev tsim nyog raug tsis raug, kev ua yeeb yaj kiab, thiab kev paub txog kev txhais lus yog qhov tseem ceeb kom paub qhov txawv qhov tseeb ntawm cov khoom vaj khoom tsev.
Kev sim ntxiv rau kev pabcuam marine:Rau cov ntawv thov dej hiav txwv tseem ceeb, kev sim ntxiv feem ntau suav nrog:
| Kuaj | Lub hom phiaj |
|---|---|
| Kev ntsuam xyuas corrosion | Kev pov thawj ntawm kev tiv thaiv kev yaig-corrosion ntawm cov dej nrawm nrawm ntawm ASTM G111 |
| Kev ntsuam xyuas microstructural | Kev txheeb xyuas cov ntsiab lus hlau, kev faib tawm, thiab cov nplej loj; hlau yuav tsum nyob rau hauv cov khoom tov, tsis raws li discrete hais |
| Kev sim hardness | Qhov siab tshaj plaws hardness txwv kom paub meej fabricability thiab tsis kam rau kev ntxhov siab- cuam tshuam degradation |
| Sulfide kev nyuaj siab corrosion kuaj | Rau kev siv hauv cov dej tsis huv lossis sulfidogenic; Kev ntsuas nrawm yuav raug teev tseg |
Welder kev tsim nyog:Welders yuav tsum tsim nyog rau ASME Tshooj IX lossis AWS D1.6 nrog rau kev tsim nyog ntawm tooj liab -nickel alloys. Qhov kev xeem tsim nyog yuav tsum ua kom pom lub peev xwm los tsim cov suab welds hauv 90/10 cov khoom, suav nrog nws cov yam ntxwv thermal thiab kua dej.
Cov ntaub ntawv xav tau:Rau qhov tseem ceeb marine, offshore, thiab naval daim ntawv thov, cov ntaub ntawv feem ntau suav nrog:
EN 10204 Hom 3.2 ntawv pov thawj(kev ywj pheej thib peb-kev soj ntsuam tog)
Cov ntaub ntawv xeem cov ntaub ntawv (MTRs)nrog rau cov xov tooj cua sov, tshuaj ntsuam xyuas, thiab cov khoom siv kho tshuab
Weld mapssau qhov chaw ntawm txhua qhov ntev seam thiab cov txiaj ntsig NDE sib raug
NDE qhianrog kev txhais zaj duab xis, cov ntaub ntawv digital, thiab cov ntawv pov thawj kws tshaj lij
Daim ntawv pov thawj Hydrostatic Testnrog lub siab, lub sijhawm, thiab cov txiaj ntsig
Cov txheej txheem kev ruaj ntseg zoo no ua kom ntseeg tau tias tooj liab -Nickel 90/10 welded yeeb nkab ua tau raws li cov kev cai nruj ntawm kev siab siab- muaj cov dej hiav txwv, xa ntau xyoo ntawm kev pabcuam txhim khu kev qha hauv marine, offshore, thiab ntug hiav txwv kev lag luam ib puag ncig.
5. Q: Los ntawm kev yuav khoom thiab kev xav tshwj xeeb, dab tsi yog qhov tseem ceeb ntawm ASTM cov qauv, kev xav txog qhov ntev, thiab cov kev xav tau ntxiv rau tooj liab -Nickel 90/10 welded yeeb nkab hauv marine thiab desalination thov?
A:Kev yuav khoom ntawm tooj liab-Nickel 90/10 welded yeeb nkab rau marine thiab desalination daim ntaub ntawv yuav tsum tau meej specification ntawm siv tau ASTM cov qauv, kev tswj qhov ntev, thiab cov kev cai ntxiv uas hais txog cov kev xav tau tshwj xeeb ntawm kev pabcuam dej hiav txwv thiab ua kom ntev - ua haujlwm tau zoo.
Yam ntxwv ntawm ASTM:
| Specification | Scope | Daim ntawv thov |
|---|---|---|
| ASTM B 467 Cov khoom siv | Welded tooj liab-nickel yeeb nkab rau kev pabcuam corrosive | Thawj qhov tshwj xeeb rau tus qauv welded yeeb nkab |
| ASTM B 608 Cov khoom lag luam | Welded tooj liab-nickel yeeb nkab rau kev pabcuam corrosive (lwm yam) | Rau kev siv dav dav |
| ASTM B111 | Tooj thiab tooj liab- alloy seamless condenser raj | Rau cov cua kub exchanger thiab tubing daim ntaub ntawv (seamless siv) |
| ASTM B466 | Seamless tooj liab -nickel yeeb nkab thiab raj | Cov qauv siv; seamless muaj rau me me diameters |
Chemical muaj pes tsawg leeg (raws li ASTM B467 rau C70600):
| Element | Kev sib xyaw (% los ntawm qhov hnyav) |
|---|---|
| Tooj | 86.5 - 90.0 (nrog rau nyiaj) |
| Nickel | 9.0-11.0 Nws |
| Hlau | 1.0-1.8 Nws |
| Manganese | ≤ 1.0 |
| Coj | ≤ 0.05 |
| Zinc | ≤ 1.0 |
| Lwm yam khoom (tag nrho) | ≤ 0.50 |
Mechanical Property Requirements (Annealed condition):
| Khoom | Kev xav tau |
|---|---|
| Tensile zog | ≥ 275 MPa (40 ksi) |
| Yield zog (0.5% extension) | ≥105 MPa (15 ksi) |
| Elongation (hauv 50mm) | ≥ 30% |
Dimensional specifications:Rau cov ntawv thov marine thiab desalination, cov neeg yuav khoom yuav tsum qhia meej:
Sab nraud txoj kab uas hla (OD) kam rau ua:Raws li ASTM B467; Feem ntau ± 0.5% rau OD> 100 hli (4 hauv)
Phab ntsa thickness tolerances:± 10% ntawm nominal
Kev ncaj:Qhov siab tshaj plaws 1.5 hli rau 3 m (0.06 hauv ib 10 ft) rau cov kav dej tseem ceeb
Cov yeeb nkab kawg:Beveled rau vuam ib ASME B16.25, nrog lub hau yas kawg kom tiv thaiv kev sib kis thaum thauj
Cov kev xav tau ntxiv rau kev pabcuam marine thiab desalination:
Deg mob:Qhiapickled thiab passivatedsab hauv thiab sab nrauv kom tshem tawm zeb nplai thiab oxides. Rau siab -purity lossis siab- daim ntawv thov nrawm, electropolished sab hauv (Ra ≤ 0.5 µm) yuav raug teev kom txo qis kev sib txhuam thiab tshem tawm cov crevices.
Kev kuaj Corrosion:Rau kev siv dej hiav txwv tseem ceeb, qhia meejimpingement corrosion xeemraws li ASTM G111 los xyuas kom meej tiv thaiv yaig-corrosion ntawm tus qauv khiav nrawm (feem ntau kuaj ntawm 2-3 m / s).
Weld seam zoo:Qhia100% radiographic kuaj (RT)ntawm longitudinal weld seam nrog kev lees paub ntawm ASME Tshooj VIII, UW-51. Rau cov ntawv thov tseem ceeb, qhia meej tias lub hauv paus weld seam yogav yaugtshem tawm cov crevices qhov twg biofouling lossis corrosion tuaj yeem pib.
Kev txheeb xyuas cov khoom zoo (PMI):Rau offshore, naval, thiab cov ntawv thov kev lag luam tseem ceeb, qhia meej100% PMIntawm tag nrho cov yeeb nkab ntev kom paub meej tias tooj liab-nickel muaj pes tsawg leeg thiab tiv thaiv kev sib xyaw-ups nrog qis- cov khoom siv tooj liab lossis cov hlau tsis muaj steel.
Kev kuaj Hydrostatic:Qhia meej tias txhua lub yeeb nkab ntev yuav tsum tau kuaj hydrostatically ib ASTM B467 nrog rau kev ntsuas siab kaw.
Cov ntaub ntawv:QhiaEN 10204 Hom 3.1(tus neeg tsim khoom daim ntawv pov thawj) rau cov qauv siv, thiabHom 3.2(thib peb-kev soj ntsuam tog) rau cov ntawv thov tseem ceeb xws li nkoj nkoj, cov chaw tawm sab nraud, lossis kev ua raws li cov lus qhia ntawm cov cuab yeej siv siab (PED).
Dimensional muaj:Copper-Nickel 90/10 welded yeeb nkab feem ntau muaj nyob rau hauv:
Txoj kab uas hla:50 hli (2 nyob rau hauv) rau 600 hli (24 nyob rau hauv) nominal
Phab ntsa thickness:Teem caij 5S txog Teem caij 80S (txheej txheem stainless hlau teem sijhawm)
Ntev:Feem ntau 6 m (20 ft) lossis 12 m (40 ft) random lengths, nrog txiav - rau - ntev muaj rau cov haujlwm tshwj xeeb
Kev xav tshwj xeeb:
| Kev txiav txim siab | Kev pom zoo |
|---|---|
| Kev txwv ceev | Rau kev tsim nrawm tshaj 3 m / s, xav txog kev qhia meej 70/30 tooj liab-nickel lossis muab kev tiv thaiv corrosion |
| Kev raug sulfide | Yog tias lub kaw lus tuaj yeem raug cov dej qias neeg lossis sulfidogenic, qhia txog kev txhim kho corrosion thiab xav txog lwm cov ntaub ntawv lossis kev kho dej. |
| Galvanic compatibility | Qhia cov khoom siv cais tawm (dielectric flanges) thaum txuas rau cov hlau tsis sib xws xws li steel, titanium, lossis siab -nickel alloys |
| Cov txheej txheem vuam | Xav kom cov chaw tsim khoom muab cov txheej txheem vuam tsim nyog (WPS) rau ASME Tshooj IX rau cov yeeb nkab tshwj xeeb qhov ntev thiab phab ntsa thicknesses muab. |
Los ntawm kev qhia txog cov kev cai no, cov neeg yuav khoom tuaj yeem xyuas kom meej tias tooj liab -Nickel 90/10 welded yeeb nkab xa cov xyoo caum ntawm kev txhim khu kev qha, kev saib xyuas- kev pabcuam dawb uas tau ua nws tus qauv thoob ntiaj teb rau cov dej hiav txwv dej hiav txwv, cov ntug dej hiav txwv, cov nroj tsuag desalination, thiab cov chaw ua haujlwm hauv ntug dej hiav txwv.
