Hauv qhov sib sib zog nqus- hiav txwv ib puag ncig, cov khoom siv tsis ua haujlwm tsis yog tsuas yog kev poob nyiaj txiag xwb, tab sis yog kev puas tsuaj ib puag ncig thiab kev npau suav phem phem. Rau cov tuam txhab lag luam marine engineering, cov ntsiab lus mob tseem ceeb rau cov kav dej hauv qab hiav txwv thiab cov khoom sib txuas suav nrog:
Crevice corrosion ntawm welds thiab khoov:Nyob rau hauv lub siab hydrostatic siab heev, stagnant seawater daig ntawm cov pob qij txha los yog khoov tuaj yeem ua rau hauv zos, ceev corrosion ntawm tus qauv stainless hlau.
Sulfide stress cracking (SSC):Cov roj av acidic ib puag ncig ntawm dej hiav txwv tob muaj hydrogen sulfide (H₂S) thiab carbon dioxide (CO₂), uas tuaj yeem ua rau cov khoom siv los ua nkig thiab tawg yam tsis muaj kev ceeb toom.
Lwm txoj kev pheej hmoo:Siv "kev lag luam- qib" alloys tsis muaj VIM + VAR dual-melting purity yuav tsum tau ua kom tiav xoom- suav nrog cov qauv kev ncaj ncees.
PebInconel 625 (Alloy 625) tubingua raws li "sib sib zog nqus-sea sentinel," tshwj xeeb tsim los xyuas kom tsis muaj qhov xau txawm nyob rau hauv cov brine feem ntau corrosive thiab siab - ib puag ncig siab.
Nyem kom tau txais Inconel 625 cov khoom lag luam
Inconel 625 alloy rau subsea pipelines
Inconel 625 alloy rau subsea pipelines
Inconel 625 yog ib qho zoo -nickel zoo-chromium- molybdenum alloy cov khoom siv dav hauv cov kav dej hauv qab dej vim nws zoo heev tiv thaiv chloride kev nyuaj siab corrosion cracking, pitting corrosion, thiab crevice corrosion. Nws yog feem ntau yog siv nyob rau hauv kev sib sib zog nqus corrosive heev - hiav txwv ib puag ncig, xws li acidic ib puag ncig, hydrogen sulfide (H₂S) ib puag ncig, thiab carbon dioxide (CO₂) ib puag ncig.
Puas yog Inconel 625 yog qhov siab -kub alloy?
Vim tias Inconel 625 alloy muaj kev tso cai tsim lub zog ntawm qhov kub thiab txias, tshwj xeeb tshaj yog nyob rau hauv thaj tsam ntawm 1200-1400℃F (649-760 degree), nws kuj tseem raug txiav txim siab siv rau hauv kev tsim cov reactor siab heev.
1. Inconel 625 Submarine Pipeline Product Overview
| Parameter | Kev piav qhia |
|---|---|
| Khoom siv | Inconel 625 (UNS N06625) Cov. |
| Yam khoom | Seamless Tube / Welded Tube (rau subsea pipeline) |
| Hom khoom | Wrought Nickel{0}}raws li Corrosion Resistant Alloy |
| Txhim kho Mechanism | Khoom- daws teeb meem(Mo + Nb) |
| Cov qauv siv tau | ASTM B444 / B705, API Spec 5LC, DNV -OS-}F101, NACE MR0175 |
| Tej kev siv | Subsea umbilicals, subsea tswj kab, tshuaj txhaj kab, subsea ntau lawm systems |
| Qhov Kev Pab Cuam Siab Tshaj Plaws | ~ 600 degree(load-cov kabmob) |
| Tsim Dej Qhov tob | Mus txog 3,000 meters |
| Kev Xa Khoom | Tshuaj kho (annealed) –tsis muaj hnub nyoog- nyuaj |
2. Tshuaj muaj pes tsawg leeg ntawm Inconel 625 subsea pipeline (wt%)
| Lub ntsiab | Cov ntsiab lus (%) | Txuj kev xav tau | Qhov tseem ceeb rau Subsea Pipeline |
|---|---|---|---|
| Nickel (Ni) | Ntau dua lossis sib npaug rau 58.0 (Sib npaug) | Ntau dua lossis sib npaug rau 58.0 | Matrix ntsiab; muab corrosion kuj thiab siab -kub stability |
| Chromium (Cr) | 20.0 – 23.0 | 20.0 – 23.0 | Oxidation thiab corrosion kuj; cov ntaub ntawv tiv thaiv passive zaj duab xis |
| Molybdenum (hli) | 8.0 – 10.0 | 8.0 – 10.0 | Cov ntsiab lus tseem ceeb- muab pitting zoo heev thiab crevice corrosion kuj nyob rau hauv seawater |
| Niobium (Nb) | 3.15 – 4.15 | 3.15 – 4.15 | Khoom- daws teeb meem; stabilizes tiv thaiv rhiab heev |
| Hlau (Fe) | Tsawg dua los yog sib npaug rau 5.0 | Tsawg dua los yog sib npaug rau 5.0 | Cov khoom seem |
| Titanium (Ti) | Tsawg dua lossis sib npaug li 0.40 | Tsawg dua lossis sib npaug li 0.40 | Ntxiv dag zog |
| Aluminium (Al) | Tsawg dua lossis sib npaug li 0.40 | Tsawg dua lossis sib npaug li 0.40 | Ntxiv dag zog |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.10 | Tsawg dua lossis sib npaug li 0.10 | Tsawg carbon rau weldability thiab corrosion kuj |
| Manganese (Mn) | Tsawg dua los yog sib npaug li 0.50 | Tsawg dua los yog sib npaug li 0.50 | Deoxidizer |
| Silicon (Si) | Tsawg dua los yog sib npaug li 0.50 | Tsawg dua los yog sib npaug li 0.50 | Deoxidizer |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.015 | Tsawg dua lossis sib npaug li 0.015 | Xyuas kom toughness |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.015 | Tsawg dua lossis sib npaug li 0.015 | Xyuas kom kub ua haujlwm |
| Cobalt (zeeg) | Tsawg dua los yog sib npaug rau 1.0 | Tsawg dua los yog sib npaug rau 1.0 | Cov khoom seem |
| Copper (Cu) | Tsawg dua lossis sib npaug li 0.07 | - | Tsawg tooj liab rau kev sib raug zoo nrog dej hiav txwv |
3. Inconel 625 Submarine Pipeline Chav Dej Kub Cov Khoom Siv Hluav Taws Xob
| Khoom | ASTM B444 Cov Lus Qhia | Tus nqi | Test Standard |
|---|---|---|---|
| Tensile Strength, Qhov kawg | Ntau dua lossis sib npaug li 830 MPa(120 hli) | 900-950 MPa | ASTM E8 |
| Tensile zog, tawm los (0.2% Offset) | Ntau dua lossis sib npaug li 415 MPa(60 hli) | 450-500 MPa | ASTM E8 |
| Elongation ntawm Break | Ntau dua lossis sib npaug li 30% | 35 – 45% | ASTM E8 |
| Kev txo qis ntawm cheeb tsam | Ntau dua lossis sib npaug li 40% | 50 – 60% | ASTM E8 |
| Hardness (Rockwell B) | Tsawg dua lossis sib npaug rau 96 HRB | 90-95 IB | ASTM E18 |
| Hardness (Rockwell C) | - | ~ 22 HRC | ASTM E18 |
| Modulus ntawm Elasticity | 207 GPa (30.0 × 10⁶ psi) | - | ASTM E111 |
| Poisson tus ratio | 0.29 – 0.30 | - | - |
| Impact Toughness (Charpy V-notch, RT) | Ntau dua lossis sib npaug rau 60 J (tus qauv) | 80 – 100 J | ASTM E23 |
Nyem rau rub tawm Inconel 625 alloy PDF ntaub ntawv tam sim no
4. Inconel 625 corrosion kuj rau subsea pipelines
| Ib puag ncig | Qib tsis kam | Qhov tseem ceeb |
|---|---|---|
| Dej hiav txwv (Stagnant) | Zoo heev | Tsis muaj pitting los yog crevice corrosion |
| Dej hiav txwv (Flowing) | Zoo heev | Withstands tshaj tawm> 10 m / s |
| Dej hiav txwv tob | Zoo heev | High hydrostatic siab, tsis tshua muaj kub |
| Chlorinated Seawater | Zoo heev | Resistant rau chlorine nres |
| Sulfide (H₂S) | Zoo heev | NACE MR0175 ua raws |
| CO₂ | Zoo heev | Qab zib corrosion kuj |
| Oxygen | Zoo heev | Tsis muaj pitting |
| Galvanic Coupling | Noble | Tau tshaj titanium, super duplex |
5. Inconel 625 Submarine Pipeline Dimensions
Standard Subsea Tube Sizes
| OD (mm) | OD (hauv) | Phab ntsa Thickness (mm) | Phab ntsa Thickness (hauv) | Kev ua haujlwm siab (psi) | Subsea Application |
|---|---|---|---|---|---|
| 6.35 | 0.250 | 0.89 | 0.035 | 11,000 | Cov kab me me |
| 6.35 | 0.250 | 1.24 | 0.049 | 16,000 | Kev tswj siab |
| 9.53 | 0.375 | 1.07 | 0.042 | 12,500 | Tshuaj txhaj |
| 9.53 | 0.375 | 1.65 | 0.065 | 20,000 | Kev txhaj tshuaj siab |
| 12.70 | 0.500 | 1.24 | 0.049 | 13,500 | Umbilical tubes |
| 12.70 | 0.500 | 1.65 | 0.065 | 18,500 | Main tswj kab |
| 15.88 | 0.625 | 1.65 | 0.065 | 15,000 | Cov kab kev pabcuam |
| 19.05 | 0.750 | 2.11 | 0.083 | 20,000 | Main hydraulic kab |
| 25.40 | 1.000 | 2.77 | 0.109 | 18,000 | Loj txoj kab uas hla ntws |
| 50.80 | 2.000 | 3.40 | 0.134 | 13,500 | Cov kab ntau lawm |
Dimensional Tolerances (Subsea Qib)
| Parameter | Ntau yam | Ua siab ntev |
|---|---|---|
| OD (tsawg dua lossis sib npaug rau 25.4 hli) | - | ± 0.05 - ± 0.10 hli |
| OD (25.4-50.8 hli) | - | ± 0.10 - ± 0.15 hli |
| OD (50.8-101.6 hli) | - | ± 0.15 ~ 0.30 hli |
| Phab ntsa Thickness | Tag nrho | ± 5% - ± 8% (kev nruj rau subsea) |
| Ntev | Txog li 15,000 mm | ± 1 hli |
| OD Ovality | - | Tsawg dua lossis sib npaug li 0.5% ntawm OD |
| Phab ntsa Concentricity | - | Tsawg dua lossis sib npaug li 8% ntawm phab ntsa thickness |
| Kev ncaj | - | Tsawg dua los yog sib npaug li 0.5 mm / m |
Hu rau peb los kho cov khoom lag luam Inconel 625 kom haum koj qhov project qhov ntev
6. Inconel 625 Tsis yog -Kev kuaj kev puas tsuaj (NDT) rau cov kav dej hauv qab hiav txwv
| Txoj Kev Xeem | Kev xav tau | Txuj | Kev lees txais |
|---|---|---|---|
| Eddy Current Testing (ET) | 100% | ASTM E426, ASTM E426 | Tsis muaj feem cuam tshuam |
| Kev kuaj ultrasonic (UT) | 100%(phab ntsa Ntau dua lossis sib npaug li 0.5mm) | ASTM E 213 | Tsis muaj teeb meem ntau tshaj 5% phab ntsa |
| Hydrostatic Test | 100% | ASME Section VIII | 1.5 × tsim siab, tsis muaj to |
| Helium Leak Test | 100%(kev pabcuam tseem ceeb) | ASTM E 498 Cov khoom siv | Tsawg dua los yog sib npaug rau 1 × 10⁻⁹ std cc/sec |
| Kev tshuaj xyuas qhov muag | 100% (10-30x magnification) | ASTM E543 Cov khoom lag luam | Tsis muaj qhov tsis xws luag |
| Kev tshuaj xyuas borescope | 100% | - | du, huv ID |
7. Inconel 625 Yeeb Nkab Cov yam ntxwv rau kev siv dej hiav txwv
Exceptional Corrosion Resistance:Unparalleled durability tiv thaiv marine ib puag ncig thiab cov tshuaj corrosive heev.
High Mechanical Strength:Tuav siab tensile thiab creep zog txawm tias dhau qhov kub ntawm kev khiav hauj lwm.
Zoo Weldability:Cov khoom siv hlau zoo heev ua rau nws sib haum nrog cov hlau sib txawv.
8. Inconel 625 Subsea Pipeline Chaw tsim khoom thiab tsim
Vim yog tus nqi siab ntawm cov khoom siv, ruaj khovInconel 625 hlautsis tshua muaj siv rau cov kav dej hauv qab hiav txwv. Hloov chaw, lawv feem ntau yog tsim los siv corrosion-resistant alloy (CRA) cladding los yog welded composite steel yeeb nkab (feem ntau API X65 los yog X70 carbon steel kab yeeb nkab).
Inconel cladding ua raws li kev tiv thaiv sab hauv tiv thaiv kev yaig zoo, thaum cov txheej txheem carbon steel tiv thaiv kev ntxhov siab. Cov kav dej clad no feem ntau yog tsim raws li API 5LD cov qauv.
Vim li cas thiaj xaiv Gnee raws li koj cov nickel-Raws li Alloy Supplier
✅Short Lead Time:Peb tuav ib tug activeCov khoom lag luam wholesalentawm tus qauv subsea qhov ntau thiab tsawg rau kev xa tawm tam sim.
✅Tag nrho Traceability:puvMTC 3.1 & 3.2cov ntaub ntawv suav nrog, sau cov ntaub ntawv ntsuas cua sov thiab PREN qhov tseem ceeb rau txhua qhov 'meter' ntawm cov yeeb nkab.
✅Global Logistics:Kev nyab xeeb, kev pov hwm kev xa mus rau cov roj thoob ntiaj teb- thaj chaw nyob hauv North Hiav Txwv, Gulf of Mexico, thiab Southeast Asia.
Gnee Alloy inconel 625 Certificate
📦 Ntim thiab Shipping
Tag nrhoNickel Raws li Alloycov khoom tau ntim nrog cov txheej txheem hauv qab no:
Ntoo pallets los yog crates
Moisture -cov ntaub ntawv pov thawj
Daim ntawv lo nrog rau lub tshuab hluav taws xob, tus qauv, thiab cov ntawv loj
Shipped thoob ntiaj teb los ntawm hiav txwv, huab cua, los yog nthuav qhia
Gnee Alloy 625 Alloy khoom ntim
Tiv tauj peb rau tus nqi xa tawm tshiab tshaj tawm rau 625 Alloy
FAQ
Q1: Inconel 625 ua li cas Sour Gas (H2S) hauv kev pabcuam subsea?
A: alloy 625yog qhov kev xaiv zoo tshaj plaws rau kev pabcuam qaub. Nws cov ntsiab lus nickel siab tiv thaiv kev ntxhov siab - corrosion cracking, thaum molybdenum tiv thaiv pitting. Peb cov khoom tshwj xeeb yog cua sov- kho kom haum raws li nrujNWS MR0175hardness txwv (Max 35 HRC rau tej yam kev mob).
Q2: Kuv puas tuaj yeem siv welded Inconel 625 kav dej rau cov kav dej hauv nkoj?
A: Rau qis - kev pabcuam siab, yog. Txawm li cas los xij, rau siab -siabSubmarine Pipelines, peb nruj me ntsis kom pebSeamless Tubing (ASTM B444)txhawm rau tshem tawm qhov kev pheej hmoo ntawm "Weld Decay" thiab xyuas kom zoo ib yamKev ntseeg ruaj khov.
Q3: Puas yog Inconel 625 xav tau kev tiv thaiv cathodic hauv dej hiav txwv?
A: Feem ntau, tsis yog. Inconel 625 yog li tiv taus dej hiav txwv uas feem ntau siv los ua "noble hlau" uas lwm cov khoom tiv thaiv. Nws tuav nws txoj kev ncaj ncees rau ntau xyoo nyob rau hauv stagnant thiab ntws brine.
Q4: Koj puas muab kev txo nqi ntau rau kev loj hlob ntawm ntug dej hiav txwv?
A: Yog lawm. Raws li kev ncaj nceesTier-1 Chaw tsim tshuaj paus, peb muab tierLag luam wholesale nqethiab mob siab rau kev tswj xyuas qhov project rau loj -cov phiaj xwm hluav taws xob tsim hluav taws xob.
