HT PIPE yog Alloy 825 stud bolts fasteners tsum nrog 15+ export kev.Tiv tauj pebkom paub ntau ntxiv thiab quotes dawb!
Alloy 825 stud bolts fastenersbelongs rau npib tsib xee- hlau-chromium tsev neeg, qhov tshwj xeeb alloy no muab cov tshuaj sib npaug sib npaug. Nws muaj tus nqi tshwj xeeb tshaj plaws - siv tau zoo dua rau ntau dua -nickel nqi- puag alloys thaum ua tau zoo tshaj tus qauv austenitic thiab duplex stainless hlau hauv kev txo qis thiab oxidizing acids.
Thawj Cov Qauv Ntiaj Teb
Khoom Specification:ASTM B425 / ASME SB425 (Standard specification rau Ni-Fe-Cr-Mo-Cu alloy pas nrig thiab bar siv rau kev ceev ceev rau hauv fasteners).
Dimensional Layouts:ASME B18.2.1 rau hnyav hex bolts, ASME B18.2.2 rau txiv ntseej, thiab BS 4882 los yog DIN 976 rau siab- kev ncaj ncees threaded studs.
Environmental Compatibility:Ua raws nraim nrogNACE MR0175 / ISO 15156kev xav tau
Sizing thiab Configurations
Fasteners yog engineered hla qhov dav dav qhov hneev taw kom haum rau hnyav -flange kev sib txuas:
Xov Diameter:Muaj los ntawm qhov loj me M3 txog M80, thiab qhov loj me ntawm 3/16 nti txog 6 ntiv tes.
Thread Pitch Configurations:Cov xov xov zoo thiab ntxhib xws li ASME B1.1 2A/3A lossis 2B/3B kev faib tawm (UNC, UNF, thiab UN thread classes).
Cov Qauv:Nruam tag nrho - threaded stud bolts, ob npaug -end studs, kais-end studs, hnyav hex lub ntsej muag bolts, thiab txuam hnyav hex txiv ntseej.
ASTM B423 UNS N08825 Tshuaj muaj pes tsawg leeg
| Qib | Cr | Fe | Ni | C | Mn | Cu | Si | S |
| ib 825 | 19.5 – 23.5 | 1.0 max | 38.0 – 46.0 | 0.05 max | 1.0 max | 1.5 – 3.0 | 0.5 max | 0.03 max |
Alloy 825 Mechanical Properties
| Qhov ntom | Melting Point | Tensile zog | Yield zog (0.2% Offset) | Elongation |
| 8,47g 3 | 1413℃(2580℃F) | Psi - 95,000, MPa - 655 | Psi - 45,000, MPa - 310 | 40% |
Ntiaj teb no Industrial Applications
VimAlloy 825 fastenerstxuas qhov sib txawv ntawm cov khoom kim heev tshwj xeeb superalloys thiab cov qauv stainless hlau, lawv ua haujlwm tseem ceeb hauv ntau qhov chaw lag luam loj thoob ntiaj teb.
1. Offshore thiab Marine Engineering
Los ntawm Hiavtxwv Qaum Teb mus rau Asia- Pacific thaj av tob hauv dej hiav txwv, cov chaw ua haujlwm sab nrauv ua haujlwm hauv thaj chaw txaws uas muaj ntsev tsuag thiab dej hiav txwv stagnation sai sai corrode qis- alloy fasteners. Kev siv UNS N08825 stud bolts kom ruaj ntseg subsea li qub, txaws-zone structural brackets, thiab marine piping manifolds tiv thaiv crevice attacks thiab localized pitting.
2. Upstream thiab Midstream Roj & Gas
Hauv cov dej qaub qaub uas muaj qib siab ntawm hydrogen sulfide, carbon dioxide, thiab cov tshuaj sulfur, tus qauv siab - tensile steel fasteners yog qhov muaj kev cuam tshuam rau sulfide kev nyuaj siab tawg. Lub siab nickel muaj pes tsawg leeg ntawm Alloy 825 nres no degradation txoj kev, ua rau nws zoo tagnrho rau downstream refining units thiab Christmas tsob ntoo valve rooj sib txoos.
3. Kev ua tshuaj lom neeg thiab acid ntau lawm
Alloy 825 sawv tawm rau nws qhov kev ua tau zoo tshwj xeeb hauv qhov chaw kub sulfuric acid. Cov nroj tsuag tshuaj siv cov fasteners no los clamp ua ke iav -kab kav dej, cua sov exchangers, pickling tank cua sov coils, thiab industrial evaporators tuav kub phosphoric acid sib tov.
4. Kev tswj kom muaj kuab paug thiab desalination
Flue gas desulfurization (FGD) scrubbers ntes aggressive sulfur -muaj roj, tsim kom muaj ib puag ncig nplua nuj nyob rau hauv corrosive condensates. Fasteners tsim los ntawm Werkstoff 2.4858 kom ruaj ntseg cov twj siv dua tshiab, cov txheej txheem damper, thiab sib xyaw tso tsheb hlau luam tawm tsam cov kua qaub- ua kom tawg.
Manufacturing, Forging, thiab Kev Tswj Xyuas Zoo
Ua tau zoo - zooAlloy 825 stud bolts fastenersyuav tsum tau ceev faj thermal thiab mechanical tswj kom tswj tau cov alloy tshwj xeeb grain qauv.
Forging thiab Thermal Treatment
Kub Forging:Ua nyob rau hauv lub qhov rais kub ntawm 870℃rau 1180℃(1600℃F txog 2150℃F). Kev ua tiav tiav yuav tsum khaws cia ntawm 1600℃F thiab 1800℃F txhawm rau txhim kho nws cov ncej- ua haujlwm corrosion.
Stabilizing Anneal:Hnyav-cov phab ntsa fasteners lossis cov khoom raug kub hnyiab heev- ua hauj lwm yuav tsum muaj lub siab ruaj khov anneal. Cov txheej txheem no redistributes chromium thiab titanium cov ntsiab lus nyob rau hauv lub matrix, neutralizing tej microstructural rhiab heev qhia thaum txias.
Qhov tseem ceeb ntawm Kev Ntsuas Cov Qauv
Txhawm rau lav kev ntseeg siab hauv siab - kev teeb tsa siab, fasteners raug soj ntsuam nruj ua ntej xa khoom:
Tshuaj Ntsuam Xyuas:Kev Ntsuas Cov Khoom Siv Zoo (PMI) kom paub meej tias cov feem pua ntawm cov khoom sib tw ASTM B425 txwv.
Mechanical Verification:Hardness mapping (feem ntau yog saib raws li Rockwell B txwv) nrog rau kev puas tsuaj tensile thiab yield testing.
Microstructural Verification:Intergranular corrosion tests soj ntsuam raws li ASTM A262 Xyaum C lossis E cov lus qhia.
Dimensional Verification:Xov haum checks siv calibrated go/no-mus ring gauges kom tswj nruj raws li thoob ntiaj teb xov qauv.
