Nyob rau hauv qhov chaw huab cua ntawm qhov tob - hiav txwv roj thiab roj extraction, tsuas yog kub tsis kam yog deb ntawm txaus. Rau cov neeg tswj xyuas kev yuav khoom thiab cov kws ua tiav tiav, cov teeb meem nyuaj tshaj plaws yog sulfide stress cracking (SSC) thiab hydrogen embrittlement.
Thaum cov khoom tseem ceeb -xws li lub pob valve, fasteners, lossis subsea hangers- raug rau siab - siab, siab - kub (HP/HT) ib puag ncig uas muaj roj qaub (H2S), cov khoom siv feem ntau ua nkig thiab tuaj yeem tawg zoo li iav. Hais txog "kev pabcuam qaub" yuav tsum muaj ntau tshaj li cov ntsiab lus nickel siab; nws xav tau kev tswj cov txheej txheem metallurgical meej.
Gnee AlloymuabTom ntej: Inconel 625 Alloyuas ua raws liNACE MR0175 / ISO 15156 tus qauv; cov khoom no tau txais kev ua haujlwm tshwj xeeb kom ntseeg tau tias muaj kev ua haujlwm tshwj xeeb hauv kev sib sib zog nqus - hiav txwv ib puag ncig.
Nyem kom tau Inconel 625 cov khoom lag luam
Inconel 625 (UNS N06625) rau Roj thiab Roj Wellheads|NACE MR0175 Txuj
Inconel 625 (UNS N06625) rau Roj thiab Roj Wellheads|NACE MR0175 Txuj
Inconel 625 (UNS N06625) yog lub siab - zoo npib tsib xee-chromium superalloy zoo tagnrho rau cov khoom siv hauv lub taub hau hauv kev lag luam roj thiab roj uas raug kev nyuaj siab thiab corrosive ib puag ncig. Txhawm rau ua raws li NACE MR0175 / ISO 15156 cov kev cai rau kev ua haujlwm qaub, cov hlau yuav tsum nyob rau hauv qhov kev mob annealed thiab ua haujlwm nruj kom txwv qhov siab tshaj plaws hardness rau 35 HRC.
Dab tsi yog cov khoom specification rau UNS N06625?
UNS N06625 (feem ntau hu ua Inconel 625) yog nickel -chromium- molybdenum superalloy. Cov hlau no muaj txiaj ntsig zoo rau nws lub zog tshwj xeeb thiab kev ua haujlwm zoo rau corrosion, pitting, thiab kev ntxhov siab -corrosion tawg thoob plaws qhov kub thiab txias ntau yam -los ntawm qhov kub thiab txias txog 982℃(1800℃F).
1. Tshuaj lom neeg muaj pes tsawg leeg ntawm Inconel 625 Alloy rau Roj thiab Gas Wellhead Equipment
| Element | Cov ntsiab lus ntau yam (%) | Lub luag haujlwm tseem ceeb |
|---|---|---|
| Nickel (Ni) | Qhov nyiaj tshuav (Ntau dua lossis sib npaug li 58%) | Matrix ntsiab; muab siab - kub stability thiab corrosion kuj puag. Cov ntsiab lus Ni siab yog qhov laj thawj tseem ceeb rau nws txoj kev ua haujlwm zoo hauv kev txo cov kua qaub. |
| Chromium (Cr) | 20.0 – 23.0 | Cov ntsiab lus tseem ceeb rau kev tsim cov khoom ntom ntom Cr₂O₃ oxide zaj duab xis; muab kev tiv thaiv nyob rau hauv siab -kub oxidizing ib puag ncig thiab oxygen- bearing acidic media. Cr Ntau dua lossis sib npaug li 20% ua rau oxidation tsis kam mus txog 1093 degree. |
| Molybdenum (hli) | 8.0 – 10.0 | Thawj lub cim kos npe txawv Inconel 625 los ntawm cov khoom siv Ni-raws li alloys. High Mo cov ntsiab lus muab kev tiv thaiv hauv kev txo cov kua qaub (HCl, H₂SO₄, HF) uas cov qauv stainless hlau tsis tuaj yeem ua tiav, thaum tseem txhim kho pitting thiab crevice corrosion kuj. |
| Niobium (Nb) + Tantalum (Ta) | 3.15 – 4.15 | Qhov thib ob kos npe. Niobium pab peb lub luag haujlwm tseem ceeb: (1) khoom- kev daws teeb meem, kev sib koom ua ke nrog Mo los txhim kho siab - qhov kub thiab txias; (2) stabilizing carbon los ntawm kev tsim NbC, tiv thaiv chromium carbide nag lossis daus ntawm cov ciam teb nplej thiab hauv paus tshem tawm sensitization thiab intergranular corrosion; (3) txhim khu kev tiv thaiv kev ntxhov siab corrosion tawg hauv fluoride- muaj ib puag ncig. |
| Hlau (Fe) | Tsawg dua lossis sib npaug li 5.0 | Pab pawg; stabilizes austenitic matrix. |
| Cov pa roj carbon (C) | Tsawg dua los yog sib npaug li 0.10 | Cov ntsiab lus qis heev ua kom tsis muaj kev cuam tshuam kev sib tshuam vim chromium carbide nag lossis daus tom qab vuam. |
| Titanium (Ti) | Tsawg dua lossis sib npaug li 0.40 | Pab pawg; stabilizes carbon thiab nitrogen, ntxiv tiv thaiv rhiab heev. |
| Aluminium (Al) | Tsawg dua lossis sib npaug li 0.40 | Pab pawg; stabilizes txhuas thiab nitrogen, ntxiv tiv thaiv rhiab heev. |
| Manganese (Mn) | Tsawg dua los yog sib npaug li 0.50 | Pab pawg; stabilizes manganese thiab nitrogen. |
| Silicon (Si) | Tsawg dua los yog sib npaug li 0.50 | Pab pawg; stabilizes silicon thiab nitrogen. |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.015 | Kev tswj nruj nruj kom tsis txhob muaj teeb meem sib cais. |
PREN (Pitting Resistance Tus lej sib npaug)
| Formula | |
|---|---|
| PREN | = %Cr + 3.3 × (%Mo + 0.5 × %W) + 16 × %N |
| Inconel 625 PREN Tus nqi | Kwv yees li 40 - 45 (nyob ntawm N cov ntsiab lus) |
| Kev sib piv | Qhov tseem ceeb tshaj 316L (~ 24) thiab 2205 (~ 35), lub ntsiab lus saum toj kawg nkaus -tier tsis kam rau pitting thiab crevice corrosion hauv chloride- muaj cov xov xwm. |
Nyem rau rub tawm Inconel 625 alloy PDF ntaub ntawv tam sim no
2. Inconel 625 Alloy rau Wellhead Equipment – Solution Annealed Condition (Cov nqi zoo ib yam)
| Khoom | Tus nqi |
|---|---|
| Tensile zog | 760-965 MPa |
| Yield zog | 345-517 MPa |
| Elongation | Ntau dua lossis sib npaug li 30% |
| Brinell Hardness | Tsawg dua lossis sib npaug li 220 HBW |
3. Siab -Tub Muaj Zog ntawm Inconel 625 Alloy rau Cov Khoom Siv Hauv Tsev
| Kub | Tensile zog | Elongation |
|---|---|---|
| 800 degree | Ntau dua lossis sib npaug li 600 MPa | Ntau dua lossis sib npaug li 20% |
| 900 degree | Ntau dua lossis sib npaug li 450 MPa | – |
Nyob rau hauv feem ntau ntawm cov tshuaj, petrochemical, thiab roj & roj kev khiav hauj lwm kub, Inconel 625 deb tshaj lub zog ntawm tej stainless hlau.
Impact toughness ntawm Inconel 625 alloy
| Qhov xwm txheej | Kev ua tau zoo |
|---|---|
| -196℃(kua nitrogen kub) | Ua zoo heev cuam tshuam toughness |
| Qhov kub thiab txias | Los ntawm cryogenic mus ze li ntawm 1000℃yam tsis muaj pob txha tawg |
4. Ceev ntawm Inconel 625 Alloy
| Khoom | Tus nqi |
|---|---|
| Qhov ntom | 8.44 g / cm³ |
| Kev sib piv | Kwv yees li . 8% hnyav dua hlau (7.85 g / cm³) |
| Kev pauv - tawm | Hnyav rau tib lub ntim, tab sis xa ntau zaus ntawm corrosion- tiv taus kev pab cuam lub neej ntawm stainless hlau. |
5. Yog vim li cas Inconel 625 Yog "Qhov kawg teb" rau kev ua tshuaj thiab roj & Gas Wellheads
1. Cov kev sib tw tseem ceeb hauv Chemical thiab Oil & Gas ib puag ncig
Kev lag luam tshuaj muaj kev cuam tshuam tsis zoo rau cov cheeb tsam uas muaj zog acids (hydrochloric, sulfuric, nitric, thiab hydrofluoric acids), muaj zog alkalis, siab - kub thiab siab - cov xov xwm siab uas muaj chlorides, qaub gases (H₂S / CO₂), thiab cov kuab tshuaj organic. Cov roj thiab cov roj hauv lub taub hau tau ntsib cov teeb meem ntxiv, suav nrog qhov kub thiab txias ntawm qhov dej tob (kub tshaj 200℃thiab siab tshaj 70 MPa), "qab zib corrosion" thiab "qaub corrosion" tshwm sim los ntawm cov ntsiab lus siab ntawm CO₂ thiab H₂S, thiab kev ntxhov siab corrosion tawg vim los ntawm chloride ions hauv cov kua dej. Cov qauv stainless hlau (xws li 304 lossis 316L) feem ntau ua tsis tiav nyob rau ob peb lub hlis raws li cov xwm txheej no, thaum duplex stainless hlau (xws li 2205 lossis 2507) tawm tsam hauv ib puag ncig uas txo qis acids thiab siab -kub tshuaj chloride raug.
2. Inconel 625's Resistance Capabilities
Kev tiv thaiv rau kev xeb dav dav -virtually "tag nrho-encompassing" tiv thaiv acids:The corrosion rate is ≤0.75 mm/year in 65% boiling nitric acid; it exhibits excellent corrosion resistance in phosphoric acid at concentrations up to 50%; it demonstrates resistance to hydrochloric acid at various concentrations at room temperature (with particularly outstanding performance at 40°C); in hydrofluoric acid environments, the general corrosion rate is only 0.075 mm/year, making Inconel 625 the standard choice for the linings and piping of hydrofluoric acid evaporators; the annual corrosion rate is merely 0.0125 mm in 50% NaOH; and the corrosion rate in sulfuric acid is approximately 1.225 mm/year. Simply put: barring hot, concentrated hydrochloric acid (>10% ntawm qhov kub thiab txias) thiab molten alkalis, Inconel 625 tuaj yeem tiv taus txhua yam tshuaj lom neeg tshaj tawm. Resistance to Pitting and Crevice Corrosion-Qhov Kev Ua Tau Zoo ntawm PREN 40+: Nws Qhov Cuam Tshuam Pitting Kub (CPT) hauv 3.5% NaCl tov nyob deb tshaj 100 degree, thiab nws qhov Critical Crevice Corrosion Temperature (CCT) yog qhov zoo sib xws. Nyob rau hauv siab -kub, concentrated chloride- bearing media, nws tsis kam mus rau crevice corrosion yog ho superior rau cov Inconel 718 thiab tag nrho cov stainless hlau. Inconel 625 yog qhov kev xaiv txhim khu kev qha tshaj plaws rau cov cheeb tsam uas muaj kev cuam tshuam corrosion, xws li flange kev sib txuas thiab valve lub cev threads hauv roj thiab roj qhov dej.
Resistance to Stress Corrosion Cracking (SCC)-NACE MR-01-75 Class VII Certification:Qhov no yog qhov tseem ceeb "kev lees paub" rau Inconel 625 hauv kev lag luam roj thiab roj. NACE MR-01-75 tus qauv faib cov khoom SCC tsis kam nyob rau hauv cov roj qaub ib puag ncig los ntawm Chav Kawm I txog VII, nrog Chav Kawm VII yog qhov siab tshaj. Inconel 625 yog ib qho ntawm ob peb cov alloys kom ua tiav Class VII daim ntawv pov thawj, ua tiav kev tiv thaiv kab mob rau SCC hauv cov pa roj qaub uas muaj cov ntsiab lus siab ntawm H₂S, CO₂, thiab Cl⁻. Hauv qhov sib piv, 316L tuaj yeem tawg tsis pub dhau ib teev nyob rau hauv ib puag ncig zoo li no, thiab 2205 tsuas tuaj yeem tiv taus qis qis ntawm H₂S. API 6A-2018 tus qauv qhia meej meej rau kev siv HH cov ntaub ntawv (cov qib siab tshaj plaws corrosion kuj) rau cov khoom siv hauv lub taub hau hauv cov roj qaub uas muaj CO₂ thiab H₂S siab; Inconel 625 thiab Inconel 718 yog cov kev xaiv uas nyiam.
Resistance to Intergranular Corrosion-Lub luag haujlwm ruaj khov ntawm Niobium:Vim tias Niobium (Nb) nyiam sib cog lus nrog Carbon (C) los ua NbC, nws tiv thaiv chromium depletion los ntawm Cr₂₃C₆ nag lossis daus ntawm cov ciam teb. Yog li ntawd, Inconel 625 yuav tsum tsis muaj kev tshaj tawm -weld stabilization kev kho mob thiab tiv thaiv kom tsis txhob muaj kev puas tsuaj -induced intergranular corrosion. Qhov no yog ib qho tseem ceeb heev rau cov tshuaj reactors thiab cov khoom siv roj thiab roj zoo uas muaj cov qauv welded dav. High-temperature oxidation and creep resistance-a "long-distance runner" for temperatures up to 980℃: The synergistic effect of Cr and Mo enables the formation of a dense oxide film at high temperatures, allowing for long-term service at temperatures up to 1093℃. Thaum lub sij hawm ntev - raug rau 650-700℃ua rau lub hnub nyoog hardening thiab ib tug me ntsis txo nyob rau hauv ductility, kev ua tau zoo tseem yuav undiminished ntawm kub hauv qab 550℃. Nws creep kuj deb tshaj li ntawm austenitic stainless hlau, ua rau nws haum rau siab -kub, siab{19}} bearing Cheebtsam.
Tsis yog -magnetic zog:Nws tseem tsis yog- sib nqus los ntawm chav tsev kub mus txog qhov kub siab (magnetic permeability μ ≈ 1.0006), qhov txiaj ntsig tseem ceeb rau cov cuab yeej downhole thiab cov khoom siv tshuaj ntsuam xyuas nrog cov kev cai sib nqus nruj.
6. Kev siv tswv yim ntawm Inconel 625
Hauv kev lag luam chemical:Linings thiab piping rau hydrofluoric acid distillation kab; reactors thiab tshav kub exchangers rau phosphoric thiab sulfuric acid ntau lawm units; Cov cuab yeej siv rau nitric acid thiab cov kua qaub sib xyaw (HNO₃ + HF, HNO₃ + H₂SO₄); siab -kub flue gas ducts nyob rau hauv khib nyiab kua incinerators; piping thiab li qub rau chlorinated organic solvents (piv txwv li, dichloromethane, trichloroethylene); tshuaj tua kab mob fermentation tank, thiab lwm yam.
Nyob rau hauv cov roj thiab roj qhov dej sector:Valve lub cev thiab stems rau Christmas ntoo; lub taub hau flanges thiab hangers; downhole kev nyab xeeb li qub; tubing thiab casing rau lub qhov dej qaub uas muaj H₂S/CO₂; subsea pipeline connectors thiab fittings; Cov khoom siv ua haujlwm qaub rau ntawm FPSOs; siab - kub, siab - cov khoom siv siab hauv cov pa roj qaub (xws li amine regeneration towers thiab sulfur recovery units), thiab lwm yam.
Hauv lwm cov sectors:Aero- cav combustion chambers thiab tso pa; heat exchangers rau pov tseg- mus rau - hluav taws xob incineration nroj tsuag; nuclear fais fab fais fab generators thiab tswj pas nrig qhia raj; seawater desalination khoom; submarine Cheebtsam, thiab lwm yam.
7. Gnee Alloy 625 Wellhead Component Production Technology
Raws li lub ntiaj teb exporter, Gnee Alloy tau zoo kov yeej cov kev cov nyom los ntawm precision manufacturing thiab nruj validation:
NACE Ua raws li:Txhua lub bar tau txais kev daws teeb meem hauv lub tshuab nqus tsev kom ntseeg tau tias qhov nyuaj hauv zos tseem qis dua 35 HRC qhov pib, yog li ua tau raws li qhov yuav tsum tau muaj kev nyab xeeb rau kev pabcuam hauv hydrogen sulfide (H2S) ib puag ncig.
Precision Manufacturing:Peb muab precision- cov pas nrig hauv av nrog kev ua haujlwm ntev txij li h8 txog h11, ua kom muaj "zoo meej" rau kev sib txuas tsis sib haum nrog lub valve sib dhos thiab cov actuators.
Tsis zoo-Free Microstructure:Peb siv VIM + VAR (Nqus Induction Melting + Nqus Arc Remelting) txheej txheem los tshem tawm macro- kev cais tawm (tshwj xeeb "freckle" tsis xws luag) uas tuaj yeem ua rau thaj chaw muaj kab mob.
Vim li cas thiaj xaiv koom tes nrog Gnee Alloy?
Direct Hoobkas Nqe:Tshem tawm cov neeg nruab nrab markups thiab ruaj ntsegLag luam wholesale nqerau koj qhov loj - cov phiaj xwm loj.
MTC 3.1 & 3.2 Traceability:Tag nrho cov cua sov- tsom xam thiab xyuas cov cuab yeej cuab tam uas sau nrog txhua pawg.
Lub Sijhawm Lead luv luv:Peb tuav ib qho lojCov khoom lag luam wholesalentawm 1 "mus rau 12" bars npaj rauKev xa tawm thoob ntiaj teb tam sim.
Custom Fabrication:Precision txiav, tsis muaj kev sib tsoo, thiab qhov kawg tshwj xeeb- ua kom haum rau koj cov qauv kev sib dhos.
Tau txais ib daim ntawv teev npe thiab nqe lus rau NACE-cov khoom ua raws Alloy 625
Gnee Alloy Khoom Ntim
Tag nrho cov khoom siv stainless hlau yog:
✅Packed rau hauv cov ntoo pallets lossis crates
✅Pov nrog cov dej noo- pov thawj qhwv
✅ Cov ntawv sau nrog tus lej xov tooj cua sov, tus qauv, thiab qhov loj me
✅Ship thoob ntiaj teb ntawm hiav txwv, huab cua, lossis nthuav qhia
Gnee Alloy 625 Alloy Ntim
Gnee Alloy Cov Khoom Siv Tsim Khoom thiab Kev Ntsuas Khoom
Tiv tauj peb tam sim no kom tau txais tus nqi xa tawm tshiab rau Inconel 625 hauv 2026
FAQ
Q1: Puas yog koj lub Inconel 625 ua tau raws li API 6A thiab NACE MR0175?
A: Yog lawm.Peb cov khoom yog engineered tshwj xeeb kom tau raws li qhov yuav tsum tau muajAPI 6A (Cov khoom siv FF / HH)thiabNACE MR0175 / ISO 15156, muab tag nrho ua raws li cov khoom siv roj qaub rau cov khoom siv zoo.
Q2: Dab tsi yog qhov txiaj ntsig ntawm h8-h11 kam rau kuv lub khw CNC?
A: Los ntawm kev muabPrecision avci rods, peb tshem tawm "bar whipping" nyob rau hauv automated feeders thiab Swiss - lathes, txo cov cuab yeej hnav thiab xyuas kom meej ibUa kom tiavrau subsea connectors.
Q3: Puas tuaj yeem GH3625 hloov Inconel 718 hauv cov ntawv thov zoo?
A: Nws nyob ntawm qhov load.Inconel 625 (GH3625) yog tus huab tais ntawm kev xeb dav dav, thaum Inconel 718 muaj zog tensile ntau dua. Yog hais tias koj ib feem yog raug rau siab mechanical torque, 718 (yog tias NACE kho) zoo dua; rau stagnant brine los yog aggressive acids,625 yog tus nqi ntau tshaj -Kev daws teeb meem zoo.
Q4: Koj puas muab kev tshuaj xyuas thib peb (SGS/TUV) rau cov phiaj xwm hluav taws xob thoob ntiaj teb?
A: Yog lawm. Peb txais tosThib peb-Kev soj ntsuam togtxhawm rau txheeb xyuas cov chemistry thiab cov khoom siv tshuab ua ntej xa khoom, xyuas kom koj qhov project hla txhua qhov kev tshuaj xyuas.
