1. Q: Incoloy 825 yog dab tsi (UNS N08825 / W.Nr. 2.4858), thiab dab tsi ua rau nws nyiam cov khoom siv roj thiab roj seamless yeeb nkab?
A:Incoloy 825, npeUNS N08825nyob rau hauv Unified Numbering System thiabW. Nr . 2.4858nyob rau hauv German system, yog npib tsib xee- hlau-chromium alloy nrog tswj kev ntxiv ntawm molybdenum, tooj liab, thiab titanium. Nws yog tsim tshwj xeeb los muab kev tiv thaiv tshwj xeeb los txo cov kua qaub, chloride kev nyuaj siab corrosion cracking, thiab sulfide kev nyuaj siab tawg - peb feem ntau corrosion mechanisms ntsib nyob rau hauv cov roj thiab roj ntau lawm ib puag ncig.
Tshuaj muaj pes tsawg leeg:Qhov sib npaug ntawm Incoloy 825 muab nws qhov sib xyaw ua ke ntawm cov khoom:
Nickel (Ni):38.0% rau 46.0% - muab cov austenitic matrix thiab tsis kam rau chloride kev nyuaj siab corrosion cracking
Chromium (Cr):19.5% mus rau 23.5% - imparts oxidation kuj thiab tiv thaiv oxidizing ib puag ncig
Hlau (Fe):Qhov nyiaj tshuav - muab tus nqi- ua tau zoo thiab ruaj khov- kev daws teeb meem
Molybdenum (Molybdenum):2.5% mus rau 3.5% - txhim khu kev tiv thaiv rau pitting thiab crevice corrosion, tshwj xeeb tshaj yog nyob rau hauv chloride-muaj ib puag ncig
Copper (Cu):1.5% mus rau 3.0% - muab tshwj xeeb tiv thaiv kom txo cov acids xws li sulfuric thiab phosphoric acid
Titanium (Ti):0.6% rau 1.2% - stabilizes cov hlau tiv thaiv intergranular corrosion los ntawm kev tsim titanium carbides es tsis yog chromium carbides
Cov pa roj carbon (C):0.05% siab tshaj - tswj kom txo qis carbide nag lossis daus
Qhov zoo ntawm Titanium Stabilization:Ib qho ntawm cov ntsiab lus txhais ntawm Incoloy 825 yog nws cov titanium ntxiv. Thaum vuam lossis raug kub siab, titanium nyiam ua ke nrog cov pa roj carbon los ua titanium carbides (TiC). Qhov no tiv thaiv kev tsim ntawm chromium carbides (Cr₂₃C₆) ntawm cov ciam teb, uas yuav txwv tsis pub chromium los ntawm cov cheeb tsam uas nyob ib sab thiab ua rau cov hlau raug cuam tshuam rau intergranular corrosion. Qhov kev ruaj khov no yog qhov tseem ceeb rau kev siv roj thiab roj qhov chaw welded Cheebtsam raug rau cov kua ua kua corrosive.
Resistance rau Roj thiab Gas Corrosion Mechanisms:Incoloy 825 hais txog peb qhov kev hem thawj corrosion hauv roj thiab roj ntau lawm:
Chloride Stress Corrosion Cracking (SCC):Cov ntsiab lus npib tsib xee siab (38% txog 46%) muab qhov tshwj xeeb tiv thaiv chloride-induced SCC, ib hom kev ua tsis tiav rau austenitic stainless hlau hauv marine thiab tsim dej ib puag ncig.
Sulfide Stress Cracking (SSC):Incoloy 825 ua tau raws li qhov xav tau ntawmNACE MR0175 / ISO 15156rau kev siv qaub qaub. Nws tiv thaiv hydrogen embrittlement thiab sulfide kev ntxhov siab tawg hauv ib puag ncig uas muaj hydrogen sulfide (H₂S).
Pitting thiab Crevice Corrosion:Cov ntsiab lus molybdenum (2.5% mus rau 3.5%) muab kev tiv thaiv zoo rau hauv zos corrosion hauv chloride- muaj ib puag ncig.
ASTM B423 - Cov Kev Qhia Tshwj Xeeb:ASTM B423 yog tus qauv tshwj xeeb rau npib tsib xee- hlau-chromium- molybdenum- tooj liab alloy (UNS N08825) seamless yeeb nkab thiab raj. Cov specification no tsim:
Manufacturing Requirements:Seamless yeeb nkab ua los ntawm kub xov los yog txias xov
Chemical composition txwv:Raws li UNS N08825 xav tau
Mechanical zog:Tensile zog 85 ksi (585 MPa) yam tsawg kawg nkaus, yield zog 35 ksi (240 MPa) yam tsawg kawg nkaus, elongation 30% yam tsawg kawg nkaus
Kev kho cua sov:Kev daws annealing ntawm 925 ° C txog 1040 ° C (1700 ° F txog 1900 ° F) ua raws li qhov txias txias
Kev kuaj tsis raug:Yuav tsum tau kuaj hydrostatic; ultrasonic lossis eddy tam sim no kuaj yeem xaiv tau
Kev siv roj thiab roj:Incoloy 825 seamless yeeb nkab yog siv rau hauv:
Downhole tubing thiab casing nyob rau hauv qaub qhov cub
Subsea tswj kab thiab hydraulic kab
Flowlines thiab sib sau cov kab
Thaum tshav kub kub exchanger tubing rau cov kev pab cuam
Instrumentation kab thiab tshuaj txhaj tshuaj kab
Wellhead thiab Christmas tsob ntoo Cheebtsam
2. Q: Dab tsi yog qhov tseem ceeb ntawm NACE MR0175 / ISO 15156 kev ua raws li Incoloy 825 seamless yeeb nkab nyob rau hauv qaub roj thiab roj kev pab?
A: NACE MR0175 / ISO 15156yog tus txheej txheem thoob ntiaj teb uas tsim cov khoom yuav tsum tau ua rau kev tiv thaiv sulfide kev nyuaj siab tawg (SSC) thiab lwm hom hydrogen embrittlement nyob rau hauv qaub roj thiab roj ib puag ncig uas muaj hydrogen sulfide (H₂S). Rau Incoloy 825 seamless yeeb nkab npaj rau kev pabcuam qaub, kev ua raws li tus qauv no tsis yog kev pom zoo nkaus xwb- nws yog ib qho tseem ceeb rau kev nyab xeeb thiab kev ntseeg siab.
Sour Service yog dab tsi?Cov kev pabcuam qaub yog hais txog qhov chaw tsim khoom roj thiab roj uas muaj hydrogen sulfide (H₂S). Thaum H₂S muaj nyob rau hauv cov kua ua kua, nws tuaj yeem ua rau:
Sulfide stress cracking (SSC):Kev tawg ntawm cov khoom raug cuam tshuam los ntawm tensile stress nyob rau hauv muaj H₂S thiab dej
Hydrogen embrittlement:Kev nqus ntawm atomic hydrogen uas diffuses rau hauv cov hlau, txo cov ductility thiab ua rau tawg
Kev ntxhov siab -kev taw qhia hydrogen-induced cracking (SOHIC):Ib daim ntawv ntawm hydrogen-induced cracking tsav los ntawm residual los yog thov kev nyuaj siab
NACE MR0175 / ISO 15156 Cov Lus Qhia:Tus qauv txhais tau tias:
Environmental txwv:H₂S ib nrab siab, kub, thiab pH tej yam kev mob
Khoom tsim nyog:Yuav tsum muaj tshuaj lom neeg muaj pes tsawg leeg, kev kho cua sov, thiab hardness
Cov khoom siv tau txais:Cov npe ntawm cov alloys tsim nyog rau kev pabcuam qaub
Incoloy 825 Raws li NACE MR0175 / ISO 15156:Incoloy 825 (UNS N08825) yog cov ntaub ntawv pom zoo rau kev pabcuam qaub raws li tus qauv, raws li cov xwm txheej tshwj xeeb:
Kev kho cua sov:Cov khoom yuav tsum tau muab rau hauv cov tshuaj -annealed mob. Kev ua haujlwm txias yam tsis muaj kev kho cua sov tom ntej yog tsis tso cai rau cov ntawv thov kev pabcuam qaub.
Hardness txwv:Qhov siab tshaj plaws hardness rau Incoloy 825 hauv kev pabcuam qaub yog feem ntau35 HRC (Rockwell C)los yog raws li tau teev tseg hauv tus qauv. Qhov kev txwv no ua kom muaj kev tiv thaiv rau SSC.
Tshuaj muaj pes tsawg leeg:Tus qauv yuav tsum tau ua pov thawj tias qhov muaj pes tsawg leeg ua tau raws li UNS N08825 txwv, nrog rau kev saib xyuas tshwj xeeb rau cov ntsiab lus nickel, chromium, thiab molybdenum.
Vim li cas NACE Ua Raws Li Qhov Tseem Ceeb:Rau cov neeg ua haujlwm roj thiab roj, qhia NACE MR0175 / ISO 15156 ua raws Incoloy 825 seamless yeeb nkab muab:
Kev ruaj ntseg:Txheeb xyuas qhov tsis kam rau SSC thiab hydrogen embrittlement
Txoj cai ua raws li:Ua raws li cov qauv kev lag luam rau cov khoom siv qaub
Risk mitigation:Txo qhov tshwm sim ntawm kev puas tsuaj loj nyob rau hauv siab - siab, siab - qhov kub thiab txias
Lifecycle kev ntseeg tau:Kev kwv yees ntev - kev ua tau zoo nyob rau hauv ib puag ncig hnyav
Kev Tsim Nyog Kev Tsim Nyog:Txhawm rau muab NACE- ua raws Incoloy 825 yeeb nkab, cov tuam txhab yuav tsum:
Certificate kev kho cua sov:Cov ntaub ntawv hais tias cov khoom yog tov annealed thiab sai txias
Txheeb xyuas hardness:Ntsuam xyuas thiab tshaj tawm cov nqi hardness rau txhua qhov cua sov lossis ntau lawm
Muab traceability:Khaws tag nrho traceability los ntawm yaj mus rau cov khoom tiav
Muab NACE-ua raws MTRs:Cov ntaub ntawv xeem Mill yuav tsum siv NACE MR0175 / ISO 15156 ua raws
Ib puag ncig txwv:Txawm tias nrog NACE- cov ntaub ntawv ua raws, cov neeg ua haujlwm yuav tsum xav txog cov kev pabcuam tshwj xeeb:
H₂S ib nrab siab:Feem ntau siv tau rau H₂S ib feem ntawm qhov siab mus txog qhov txwv tau teev tseg hauv tus qauv
Qhov kub thiab txias:Incoloy 825 feem ntau siv tau rau kev pabcuam qaub thoob plaws qhov kub thiab txias ntawm cov roj thiab roj ntau lawm
pH:Kev ua tau zoo yuav txawv nrog cov kua pH; tus txheej txheem txhais tau tias muaj ntau yam
3. Q: Dab tsi yog qhov tseem ceeb ntawm kev tsim thiab vuam kev txiav txim siab rau ASTM B423 Incoloy 825 seamless yeeb nkab hauv kev siv roj thiab roj?
A:Kev tsim thiab vuam ntawm ASTM B423 Incoloy 825 seamless yeeb nkab yuav tsum tau tshwj xeeb cov txheej txheem uas muaj kev cuam tshuam cov alloy lub cim metallurgical yam ntxwv. Lub titanium stabilization, uas muab kev tiv thaiv zoo heev rau intergranular corrosion, kuj cuam tshuam rau kev siv vuam. Kev tsim khoom tsim nyog yog qhov tseem ceeb los tswj cov kev tiv thaiv corrosion thiab txhua yam kev ncaj ncees uas xav tau rau kev pabcuam roj thiab roj.
Forging thiab Bending:Hauv kev daws teeb meem -annealed mob, Incoloy 825 pom zoo ductility:
Cold dabtsi yog khoov:Cov yeeb nkab tuaj yeem ua kom txias khoov siv cov txheej txheem ua haujlwm. Yam tsawg kawg khoov radii yuav tsum tsim nyog rau cov yeeb nkab txoj kab uas hla thiab phab ntsa thickness.
Ua hauj lwm hardening:Lub alloy ua hauj lwm hardens ntawm tus nqi nruab nrab. Rau txoj kev khoov los yog qhov tseem ceeb deformation, nruab nrab cov tshuaj annealing yuav tsum tau los kho cov ductility.
Kub dabtsi yog khoov:Rau cov phab ntsa tuab lossis cov geometries nyuaj, kub dabtsi yog khoov ntawm qhov kub ntawm 950 ° C thiab 1150 ° C (1740 ° F txog 2100 ° F) txo cov kev tsim rog.
Springback:Lub alloy nthuav tawm nruab nrab springback; cov nyiaj pub dawb yuav tsum tau ua hauv kev tsim cov cuab yeej.
Welding Considerations:Incoloy 825 nthuav tawm weldability zoo heev, thiab titanium stabilization muab kev tiv thaiv rau intergranular corrosion nyob rau hauv raws li -welded mob:
Vuam txheej txheem:
Gas Tungsten Arc Vuam (GTAW/TIG):Nyiam rau cov yeeb nkab vuam, muab kev tswj zoo heev thiab huv welds
Gas Metal Arc Vuam (GMAW/MIG):Haum rau cov phab ntsa tuab
Shielded Hlau Arc Vuam (SMAW):Nws tuaj yeem siv rau kev sib tsoo nrog cov electrodes uas tsim nyog
Filler hlau xaiv:Matching muab tub lim hlau yog qhov tseem ceeb rau kev tswj kev tiv thaiv corrosion:
ERNiCrMo-3:Qhov feem ntau siv sib txuam cov hlau rau Incoloy 825
ERNiCr-3:Tej zaum yuav siv rau cov ntawv uas tsis yog - tseem ceeb tab sis tsis muab tib theem ntawm corrosion kuj
Matching Incoloy 825 muab tub lim:Muaj los ntawm cov chaw muag khoom tshwj xeeb
Cov txheej txheem welding tseem ceeb:
Kev huv huv:Kev tu nruj kom tshem tawm cov roj, roj, thiab cov khoom siv kos npe. Sulfur, lead, thiab zinc paug tuaj yeem ua rau embrittlement.
Kub input tswj:Kev tswj qhov kub thiab txias (feem ntau qis dua 150 ° C / 300 ° F) kom txo qis kev cuam tshuam thiab kev loj hlob ntawm cov nplej
Shielding Gas:Argon lossis argon-helium sib tov; rov qab purging qhov tseem ceeb rau cov hauv paus hla los tiv thaiv oxidation sab hauv
Preheating:Feem ntau tsis xav tau rau cov thicknesses txog li 25 hli (1 nti)
Ncej -weld kev kho cua sov:Rau feem ntau daim ntawv thov roj thiab roj, tom qab -weld heat treatment yogtsis xav taurau Incoloy 825. Lub titanium stabilization muab kev tiv thaiv txaus rau intergranular corrosion nyob rau hauv raws li -welded mob. Txawm li cas los xij, rau cov ntawv thov uas xav tau qhov siab tshaj plaws corrosion kuj, tag nrho cov tshuaj annealing kev kho mob (925 ° C txog 1040 ° C / 1700 ° F txog 1900 ° F) ua raws li kev ua kom txias sai.
NACE MR0175 / ISO 15156 Vuam Requirements:Rau daim ntawv thov kev pabcuam qaub, xav tau ntxiv:
Hardness tswj:Welds thiab cua sov- cov cheeb tsam cuam tshuam yuav tsum ua tau raws li cov kev txwv hardness teev nyob rau hauv NACE MR0175
Welder kev tsim nyog:Welders yuav tsum tsim nyog ntawm Incoloy 825 siv cov txheej txheem tsim nyog
Txheej txheem kev tsim nyog:Cov txheej txheem vuam yuav tsum tsim nyog nrog kev ntsuas tshuab uas suav nrog kev txheeb xyuas qhov nyuaj
Machining thiab Threading:Rau cov yeeb nkab kawg thiab fittings:
Tooling:Carbide tooling pom zoo rau kev tsim khoom
Txiav Parameters:Kev nrawm nrawm nrog cov khoom hnyav kom tsis txhob ua haujlwm hnyav
Coolant:Flood coolant tseem ceeb rau cov cua sov dissipation
Xov xov:Xov yuav tsum tau txiav kom huv si; tsis txhob galling los ntawm kev siv cov xov sib txuas tsim nyog
Kev Tiv Thaiv Kab Mob:Incoloy 825 yog rhiab heev rau kev sib kis:
Hlau:Hla -kev sib kis los ntawm cov cuab yeej carbon steel tuaj yeem tsim qhov chaw galvanic corrosion
Sulfur:Tsis txhob muaj leej faj- cov roj nplua nyeem thiab cov khoom siv cim
Tsawg- melting- taw tes hlau:Lead, zinc, thiab tooj liab tuaj yeem ua rau embrittlement
4. Q: Dab tsi yog cov kev siv roj thiab roj tshwj xeeb uas Incoloy 825 seamless yeeb nkab yog qhov tseem ceeb, thiab cov yam ntxwv ua tau zoo dab tsi ua rau nws xaiv?
A:Incoloy 825 seamless yeeb nkab tau teev tseg rau qee qhov kev thov roj thiab roj ntau tshaj plaws, tshwj xeeb tshaj yog nyob rau hauv qhov kev pabcuam qaub, qhov kub thiab txias, lossis cov kua dej uas muaj corrosive. Lub alloy qhov tshwj xeeb ua ke ntawm corrosion kuj, lub zog, thiab kev ntseeg tau ua rau nws indispensable nyob rau hauv cov cheeb tsam no.
Downhole Tubing thiab Casing:Hauv cov av qaub av uas muaj hydrogen sulfide (H₂S) cov ntsiab lus:
Tubing:Cov tubing ntau lawm uas xa cov roj thiab cov roj los ntawm lub reservoir mus rau saum npoo yuav tsum tiv thaiv sulfide kev nyuaj siab tawg (SSC) thiab hydrogen embrittlement dhau kev pab cuam lub neej ntev.
Cov tsav tsheb ua haujlwm:NACE MR0175 ua raws, tsis kam mus rau SSC, siab zog, txhim khu kev qha threaded kev sib txuas
Casing:Cov yeeb nkab steel uas kab lub qhov dej tuaj yeem suav nrog Incoloy 825 rau cov seem raug rau thaj tsam corrosive.
Cov tsav tsheb ua haujlwm:Corrosion tsis kam, vau tsis kam, compatibility nrog downhole ib puag ncig
Subsea Control Lines thiab Hydraulic Lines:Hauv subsea ntau lawm systems:
Tshuaj txhaj kab:Cov me me - txoj kab uas hla uas xa cov tshuaj tiv thaiv corrosion, scale inhibitors, thiab lwm yam tshuaj rau lub taub hau thiab cov khoom siv downhole.
Cov tsav tsheb ua haujlwm:Resistance rau sab hauv thiab sab nraud corrosion, siab siab ncaj ncees, kev ntseeg siab nyob rau hauv cov dej tob ib puag ncig
Hydraulic tswj kab:Tubing uas xa cov paib hydraulic rau subsea li qub thiab khoom siv.
Cov tsav tsheb ua haujlwm:Leak -nruj kev ncaj ncees, corrosion resistance, yooj rau spooling
Flowlines thiab sib sau kab:Nyob rau hauv corrosive tsim ib puag ncig:
Flowlines:Cov kav dej uas thauj cov roj, roj, thiab tsim cov dej los ntawm lub qhov dej mus rau cov chaw ua haujlwm.
Cov tsav tsheb ua haujlwm:Kev tiv thaiv sab hauv corrosion los ntawm H₂S, CO₂, thiab chlorides; weldability rau thaj chaw installation
Sib sau kab:Cov tshuab uas sau cov khoom tsim los ntawm ntau qhov dej.
Cov tsav tsheb ua haujlwm:Ntev -kev cia siab rau lub sijhawm, kev tiv thaiv corrosion, tus nqi- ua haujlwm zoo
Thaum tshav kub kub Exchanger Tubing:Nyob rau hauv topside thiab subsea ua:
Cov txheej txheem txias txias:Cov raj uas ua kom txias ua kua ua ntej ua haujlwm ntxiv.
Cov tsav tsheb ua haujlwm:Ua haujlwm rau ob lub plhaub- sab thiab raj- sab corrosion, thermal conductivity, fouling kuj
Gas dehydration units:Thaum tshav kub kub exchangers nyob rau hauv glycol systems rau natural gas dehydration.
Cov tsav tsheb ua haujlwm:Ua haujlwm kub glycol corrosion, thermal stability
Instrumentation thiab Chemical Injection Systems:Rau kev tswj kom meej ntawm kev ua haujlwm ntau lawm:
Instrumentation kab:Me - txoj kab uas hla tubing rau kev ntsuas siab thiab ntsuas kub.
Cov tsav tsheb ua haujlwm:Corrosion kuj, qhov ntev stability, kev ntseeg tau
Tshuaj txhaj tshuaj tubing:Kev xa tawm ntawm methanol, glycol, thiab lwm yam tshuaj rau hydrate inhibition.
Cov tsav tsheb ua haujlwm:Tsis kam mus rau ob qho tshuaj txhaj tshuaj thiab cov kua ua kua
Wellhead thiab Christmas tsob ntoo Cheebtsam:Nyob rau hauv cov kev pab cuam qaub qhov zoo:
Valve stems thiab trim:Cov khoom siv sab hauv raug rau siab - siab qaub roj.
Cov tsav tsheb ua haujlwm:Galling kuj, NACE ua raws, siab zog
Choke Cheebtsam:Cov cuab yeej tswj xyuas qhov dej ntws zoo.
Cov tsav tsheb ua haujlwm:Erosion-corrosion kuj, hardfacing compatibility
Kev sib piv nrog lwm cov khoom siv:
| Khoom siv | NWS MR0175 | H₂S Resistance | Chloride SCC | Nqi | Daim ntawv thov |
|---|---|---|---|---|---|
| Incoloy 825 N08825 | Yog lawm | Zoo heev | Zoo heev | Nruab nrab | Sour service, downhole |
| 316L Stainless hlau | txwv | pluag | pluag | Tsawg | Tsis yog- qaub, qab zib pab |
| 22Cr Duplex | Yog lawm | Zoo | Zoo | Nruab nrab | Kev pabcuam qaub, txwv |
| Tom ntej: Inconel 625 (N06625) | Yog lawm | Zoo heev | Zoo heev | Siab | Kev pabcuam qaub heev |
| Carbon hlau (CS) | Tsis muaj | pluag | pluag | Tsawg heev | Tsis yog -kev pabcuam corrosive |
Kev xaiv Rationale:Cov kws ua choj xaiv Incoloy 825 seamless yeeb nkab rau kev siv roj thiab roj thaum:
Sour Service (H₂S)tam sim no, yuav tsum tau ua raws NACE MR0175
Chloridesmuaj nyob rau hauv cov dej tsim, ua rau muaj kev ntxhov siab corrosion cracking txaus ntshai
CO₂yog tam sim no, yuav tsum tau ua hauj lwm rau qab zib corrosion
KubQhov kub ntawm ambient mus rau qhov siab (txog li 540 ° C / 1000 ° F)
Tus nqi -kev ua tau zooyog xav tau piv rau siab dua -nickel alloys xws li Inconel 625
5. Q: Dab tsi yog qhov kev lees paub zoo, kev sim, thiab kev xav txog kev yuav khoom yog qhov tseem ceeb thaum muab ASTM B423 Incoloy 825 seamless yeeb nkab rau kev siv roj thiab roj?
A:Kev yuav khoom ntawm ASTM B423 Incoloy 825 seamless yeeb nkab rau kev siv roj thiab roj yuav tsum tau ua tib zoo saib xyuas kom zoo, kev soj ntsuam cov txheej txheem, thiab cov saw saw kev ntseeg tau. Qhov tseem ceeb ntawm qhov downhole, subsea, thiab topside daim ntawv thov xav kom cov khoom zoo tsis txhob cuam tshuam.
Material Certification thiab Traceability:Lub hauv paus ntawm kev ruaj ntseg zoo yog cov ntaub ntawv dav dav:
Mill Test Report (MTRs):Txhua qhov khoom xa tuaj yuav tsum suav nrog MTRs cov ntaub ntawv:
Kub naj npawb:Tag nrho traceability rau qhov qub yaj
Tshuaj ntsuam xyuas:Kev txheeb xyuas ntawm UNS N08825 muaj pes tsawg leeg, tshwj xeeb yog npib tsib xee (38% txog 46%), chromium (19.5% txog 23.5%), molybdenum (2.5% mus rau 3.5%), tooj liab (1.5% txog 3.0%), thiab titanium (0.6% mus rau 1.2%)
Mechanical zog:Lub zog tensile (85 ksi / 585 MPa min), yield zog (35 ksi / 240 MPa min), elongation (30% min)
Cov ntaub ntawv kho cua sov:Kev daws qhov kub thiab txias (925 ° C txog 1040 ° C / 1700 ° F txog 1900 ° F) thiab txoj kev txias
Kev kuaj Hardness:Kev txheeb xyuas cov nqi hardness rau kev ua raws NACE
Kev kuaj Hydrostatic:Cov ntaub ntawv ntawm kev sim siab thiab cov txiaj ntsig
NACE MR0175 / ISO 15156 ua raws:Rau cov ntawv thov kev pabcuam qaub, MTRs yuav tsum qhia meej meej txog kev ua raws li tus qauv, suav nrog:
Kev kuaj xyuas qhov kub thiab txias:Tshuaj annealed mob
Hardness txwv:Feem ntau 35 HRC siab tshaj plaws
Khoom siv:Tsis ua haujlwm txias yam tsis muaj kev kho cua sov tom qab
Nondestructive Examination (NDE):ASTM B423 yuav tsum tau kuaj hydrostatic ntawm txhua cov yeeb nkab. Rau cov ntawv thov tseem ceeb, NDE ntxiv yuav raug teev tseg:
Kev kuaj ultrasonic (UT):Tag nrho -ntev ntim tshuaj ntsuam xyuas kom pom cov teeb meem sab hauv
Eddy tam sim no xeem (ET):Nto thiab ze ntawm - deg defect detection
Kev kuaj kua dej (PT):Kev tshuaj xyuas cov yeeb nkab kawg thiab cov chaw tseem ceeb
Kev ntsuas hluav taws xob (RT):Rau weld tshuaj xyuas yog muaj
Dimensional Verification:ASTM B423 qhia txog qhov ntev ntev:
| Parameter | Yam Ua Tau Zoo |
|---|---|
| Sab nraud txoj kab uas hla | ± 0.010 rau qhov ntau thiab tsawg hauv qab 2 hauv; nws txawv ntawm qhov loj |
| Phab ntsa thickness | ± 12.5% phab ntsa yam tsawg kawg nkaus |
| Ntev | ± 0.125 nyob rau hauv rau txiav lengths |
| Kev ncaj | Qhov siab tshaj qhov sib txawv ntawm ib chav tsev ntev |
Cov Lus Qhia Tshwj Xeeb rau Roj & Roj:
Threaded kev twb kev txuas:Rau downhole tubing, API 5CT lossis kev sib txuas hwm zoo yuav raug teev tseg
Sour service marking:Cov kav dej rau NACE cov kev pabcuam feem ntau yog cim nrog "MR0175" lossis "ISO 15156"
Kev kuaj Hardness:Kev kuaj hardness ntxiv ntawm cov yeeb nkab lub cev thiab cov vuam kawg yuav xav tau
Kev ntsuam xyuas cuam tshuam:Rau qis- qhov kev pabcuam kub, Charpy V- qhov ntsuas qhov ntsuas qhov ntsuas yuav raug teev tseg
Supplier Qualification:Rau kev siv roj thiab roj, cov neeg muag khoom yuav tsum ua kom pom:
ISO 9001 ntawv pov thawj:Kev tswj hwm zoo
API Q1:Rau cov neeg muab khoom siv rau kev lag luam roj thiab roj
Mill kev pom zoo:Lub zeb yuav tsum tau pom zoo los ntawm cov neeg ua haujlwm roj thiab roj loj
Traceability systems:Pom muaj peev xwm tswj tau tag nrho traceability
Tau Txais Daim Ntawv Tshawb Fawb:
Txheeb xyuas cov cim sib tw yuav khoom (cov lej kub, alloy, specification, NACE ua raws)
Txheeb xyuas MTRs kom tiav thiab ua raws li ASTM B423
Paub meej tias cov ntaub ntawv ua raws NACE MR0175
Ua Kev Ntsuas Cov Khoom Siv Zoo (PMI) txhawm rau txheeb xyuas cov khoom sib xyaw ua ke
Tshawb xyuas qhov xwm txheej ntawm qhov tsis xws luag
Txheeb xyuas qhov ntev (OD, phab ntsa thickness, ntev, ncaj)
Rau cov ntawv thov tseem ceeb, xa cov qauv rau kev kuaj kev kuaj mob
Common Procurement Specifications:
| Daim ntawv thov | Pom zoo Specification |
|---|---|
| General roj & roj | ASTM B423, UNS N08825 |
| Kev pabcuam qaub | ASTM B 423 + NACE MR0175 / ISO 15156 |
| Downhole tubing | ASTM B 423 + API 5CT (rau kev sib txuas) |
| Subsea | ASTM B 423 + NDE cov cai ntxiv |
Cia thiab tuav:
Ib puag ncig huv:Khaws cia kom deb ntawm cov pa roj carbon steel kom tsis txhob muaj hlau paug
Kev tiv thaiv ntim:Khaws cov kaus mom kawg thiab cov txheej tiv thaiv
Traceability khaws cia:Xyuas kom cov cim tseem pom tau
Kev tiv thaiv dej noo:Tsis txhob raug cov dej noo uas tuaj yeem ua rau pitting
Los ntawm kev ua raws li qhov kev lees paub zoo thiab kev coj ua, cov neeg ua haujlwm roj thiab roj tuaj yeem ua kom ntseeg tau tias ASTM B423 Incoloy 825 seamless yeeb nkab ua tau raws li cov kev cai nruj ntawm cov kev pabcuam qaub, muab cov kev tiv thaiv corrosion, kev ntseeg siab, thiab kev nyab xeeb tseem ceeb rau kev ua haujlwm ntev -.
