Nyob hauv lub ntiaj teb tshwj xeeb welding consumables, ornicu -7 sawv ntsug rau corrosion, siab lub zog, thiab versatility hauv kev xav tau ib puag ncig. Feem ntau hu uaMonel 60(Matching lub hauv paus aleloy monel 400), ornicu -7 Yog ib qho kev daws teeb meem Seadwater, acidic media muaj cov ntaub ntawv ntsev. Tsab ntawv no tshawb txog cov kev qhia txog kev paub, cov ntawv thov tseem ceeb, thiab kev pom ntawm vim li cas nws tseem tseem ceeb rau cov khoom tseem ceeb rau cov engeters thiab cov tsiaj txhu.
Kev nthuav qhia ntawm ernicu -7
Faib rau hauv qabAws A5.14(ASME SFA -5 Nws cov tshuaj muaj pes tsawg leeg suav nrog:
Npib tsib caug (ni): 63-70% (Muab corrosion tsis kam thiab ductility)
Tooj Liab (Cu): 25-35% (txhim kho lub zog thiab tiv thaiv kom txo cov kua qaub)
Hlau (FE): Tsawg dua los yog sib npaug rau 2.5% (txhim kho cov khoom siv mechaychanical)
Manganese (mn): Tsawg dua los yog sib luag rau 1.5% (AIDS hauv Deagidization thiab Arc stability)
Cov Khoom Siv Tseem Ceeb:
Corrosion Kuj: Txawj nyob rau hauv Seasater, sulfuric thiab hydrochloric acids, alkaline daws, thiab hydrofluoric acid.
Neeg Kho Tshuab Muaj Zog: Tensile Lub zog ntawm ~ 550-750 MPa (80, {}}}}} psi) nrog kev ua kom zoo ntawm cryogenic kub.
Thermal ruaj khov: Tswj kev ua tau zoo los ntawm cryogenic tej yam kev mob (-196 degree / {{degree f) txog 480 degree (900 degree f).
Hwj txwv: Haum rau roj Tungsten Arc Vuam (GTaw / TIG), Roj Hlau Arc Vuam (Gmaw / Mig), thiab Submerged Arc Vuam (pom).
Thawj cov ntawv thov ntawm eNCicu -7
Cov khoom tshwj xeeb ntawm ernicu -7}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Kev Kawm Txuj Ci Thiab Cov Kev Nyab Xeeb Kev Nyab Xeeb:
1. Tubrog thiab Offshore Engineering
Cov kws lij choj nkoj thiab Shafts: Tsis kam Cavitation yosion thiab biofouling hauv Salewater.
BUSHEA Pipelines Thiab Li Li Qub: Tiv thaiv kev tawm tsam pitting thiab crevice corrosion hauv cov roj huv-hiav txwv thiab roj tawm.
Desalination Nroj Tsuag: Welds Evaporator Tubes thiab cua sov sib pauv tuav broundling brine thiab chlorides.
2. Tshuaj lom neeg thiab petrochemical ua
Reactors thiab Tso Tsheb Hlau Luam: Withstands sulfuric acid, hydrofluoric acid, thiab caustic dej qab zib.
Twj Thiab Compressors: Siv nyob rau hauv alkylation units thiab cov chiv thiab chiv ntau qhov chaw kua qaub muaj kua qaub muaj.
3. Lub zog tiam
Cov Tshuab Cua Txias: Cov kab mob koom tes nrog cov tub sab hauv cov ntug hiav txwv muaj zog cog raug rau dej hiav txwv.
Nuclear Roj tuav tes: Cov cuab yeej siv rau uranium ua vim muaj hluav taws xob tiv thaiv hluav taws xob-ntxias.
4. AERPOSPACE THIAB DEFENSE
Rocket cav Cheebtsam: Withstands heigh-teas pa pa pa roj thiab oxidizers.
Cov tshuab hydraulic: Siv rau hauv cov dav hlau fittings raug rau cov kua dej rau cov kua thiab cov ntsev ua haujlwm.
5. Khoom noj khoom haus thiab cov tshuaj lag luam
Cov Khoom Siv Ua: Muab cov chaw tsis yog-reactive rau kev tuav cov tshuaj tua kom huv (piv txwv li, ci tshuab).
Vim li cas thiaj xaiv Ernicu -7 dua lwm cov alloys?
Superior rau Stainless Hlau: Outperforms 316L thiab Duplexs hauv cov chloride-nplua nuj lossis cov acidic ib puag ncig.
Nqi-Siv Tau Vs. Titanium: Muaj qhov sib piv ntawm dej hiav txwv corrosion tsis kam ntawm tus nqi qis.
Nicey tshaj npib npib tsib xee-chromium alloys: Zoo dua rau kev txo cov kua qaub (piv txwv li, hf) piv rau inconel (ni-cr) alloys.
Vuam zoo tshaj plaws kev coj ua rau ernicu -7
Ua ntej-weld npaj:
Cov khoom siv huv hauv paus kom huv si kom tshem tawm cov leej faj, roj, thiab cov oxides (siv cov hlau stainless txhuam).
Preheat not typically required but recommended for thick sections (>25 hli) kom txo qis kev ntxhov siab thermal.
Tiv Thaiv Roj:
Rau Tig Vuam, Siv Cov Ntshiab Argon; Rau Mig, Argon-helium messes txhim kho fundicity thiab nkag mus.
Sib txuam Kub:
Khaws qis dua 150 qib (300 degree f) los tiv thaiv cov kev tawg kub.
Kev Kho Mob Tom Qab Weld:
Kev ntxhov siab-kev hloov siab (600-650 degree / 1112-1202 Qib F) yuav tau thov rau cov ntawv tseem ceeb los txhim kho kev ua tiav.
Cov kev sib tw thiab cov kev txwv
Galvanic corrosion kev pheej hmoo: Zam zam ua khub nrog cov hlau hlau lossis tooj liab hauv cov ntawv thov raus tsis muaj rwb thaiv tsev.
Ua Haujlwm Hardening: Yuav tsum ceev faj lub tshuab ua kom tsis txhob tawg ua kev tawg hauv cov chaw ua haujlwm txias.
Tus nqi: Cov khoom siv siab dua tau muab piv rau cov hlau tsis muaj hlau, ua kom ncaj ncees los ntawm kev ua haujlwm ntev hauv qhov chaw hnyav.
Kev ua lag luam thiab yav tom ntej saib xyuas
Lub ntiaj teb xav tau rau npib tsib xickel-tooj liab alloys tau npaj rau kev loj hlob ntawm5.8% CAGT txog 2030, tsav los ntawm:
Offshore Zog nthuav dav: Cov roj av tob tob nrhiav chaw ua liaj ua teb kom ruaj khov yuav tsum muaj cov khoom siv ntxiv rau yav dhau los.
Ntsuab Hydrogen Ntau Lawm: Electrolyzers thiab hydrogen cia tshuab siv cov khoom siv acidic electrolytes.
Kev Kho Mob Dej: Kev nqis peev nce rau hauv qhov kev cia siab thiab cov nroj tsuag kom rov qab ua dua tshiab.
Kev sib tw:
Npib tsib xee nqi volortility: Kev hloov pauv hauv RAW cov khoom siv cov nqi khoom siv Performance Industernics.
Cov Txiaj Ntsig: Kev kawm tshwj xeeb uas xav tau rau Weld kev ua haujlwm siab-ua haujlwm nickel alloys tau zoo.
Xaus: Lub Corrosion Warrior Nyob Hauv Chaw Nyab
Ernicu -7} yog ntau tshaj li kev siv hluav taws xob - nws yog ib txoj kev xav tau ntawm kev ntseeg tau nyob rau hauv kev ua hauj lwm tsis yog ib qho kev xaiv. Nws cov tsis tuaj yeem mus rau dej hiav txwv, acids, thiab thermal cycling ua kom nws txoj hauv kev hauv marine, tshuaj lom neeg, thiab lub zog dectors. Xws li kev lag luam hauv ntiaj teb thawb mus rau cov kev cai hnyav thiab cov txheej txheem stricter ib puag ncig xav tau ntev dua ntev li lub cuab yeej cuab tam
Rau welders thiab engersers, mastering ernicu -7 Tsis yog ib qho kev txawj ntse tab sis kev tsim kho. Txawm hais tias hauv qab thu dej hiav txwv lossis sab hauv cov tshuaj kho yeeb yam, cov ntaub ntawv no yog qhov tseem ceeb kom kov yeej lub ntiaj teb txoj kev muaj kev muaj kev nyuaj siab tshaj plaws.
