Hauv kev lag luam kev ua haujlwm muaj kev koom tes nrog kev ua haujlwm siab {}}}}}}} Cov kev ua tau zoo rau cov cuab yeej kev nyab xeeb thiab kev ua haujlwm. Cov tshuaj electrodes zoo tshaj plaws feem ntau tsis tuaj yeem tiv thaiv lub sijhawm kub, uas yog teeb meem zoo li kev txo lub zog, oxidation, thiab txawm tias cov qauv tsis ua tiav ntawm Welds. Yog li, xaiv cov hluav taws xob tshwj xeeb tsim rau high- kev pabcuam kub yog qhov tseem ceeb. Qhov xwm txheej no tso tawm cov ntsiab lus tseem ceeb rau cov kev pom zoo siab kom high- kev siv cov ntawv thov, thiab kev siv cov xwm txheej raug.
Cov tseem ceeb uas yuav tsum rau siab - kub cov hluav taws xob
Ua ntej relving rau hauv cov lus pom zoo electrode, nws yog qhov tseem ceeb kom nkag siab txog cov kev ua tau zoo tseem ceeb rau kev xav tau siab}}} kub kev pab. Ua ntej, siab - kub lub zog ceev yog tsis {{sib yeem. Welds yuav tsum muaj kev tiv thaiv txaus thiab nkag rau ntawm cov chaw kub siab (feem ntau tshaj 400 degree) kom tsis txhob deformation lossis pob txha lov hauv qab. Thib ob, oxidation thiab corrosion tsis tseem ceeb heev, raws li siab, carbon dioxide, lossis sulpur- pa welds) Thib peb, kev ruaj ntseg hluav taws xob ruaj khov yuav tsum tau los ua kom tsis txhob muaj micros kev loj hlob (xws li theem kev hloov chaw thaum raug canclic thaum raug canclic lossis kev kub ntxhov siab. Thaum kawg, sib xyaw nrog cov khoom siv hauv paus yog qhov tseem ceeb {13} Cov khoom lag luam yuav tsum phim cov khoom siv ntawm cov hlau tau welded kom txo qis kev ntxhov siab thiab kev tawg.
Cov Khoom Siv Kom Pom Zoo Rau Cov Hluav Taws Xob kom muaj siab - kev pab kub
1. E310-16/E310-15 (A402/A407)
E310 Series cov hluav taws xob yog tsim rau vuam ustenitic stainless hlau, tshwj xeeb tshaj yog 310 stainless hlau, uas zoo nyob rau hauv high-}} qhov chaw dej sov. Cov hluav taws xob no muaj cov qib chromium (25-26%) thiab Nickel (20-22%), sib sau cov qauv Autenitic ruaj khov uas tiv taus oxidation txog 1150 degree.
Kev ua tau zoo: Lawv cov ntaub ntawv Chromium cov ntsiab lus tuab chomium oxide txheej rau ntawm weld nto, thaiv kev oxidation ntxiv. Lawv kuj nthuav tawm cov en cre txawv zoo tshaj plaws ntawm 800 - 1000℃thiab tswj cov ductility txawm tias tom qab lub sijhawm ntev ntev.
Cov ntawv thov: feem ntau yog siv nyob rau hauv muaj cov cua sov muaj zog (piv txwv li, kev hloov pauv cua sov), nrog rau kev nqus pa hluav taws xob), zoo li} kub pipelines hauv cov nroj tsuag petrochemical. E310 {- 16 yog qhov haum rau AC lossis DC VUAM, THAUM TSHUAJ RAU HYCE-Hydrogen-Inducion Cracking.
2. E2209-16/E2209-15 (E2209)
E2209 elecround yog duplex stainless hlau electrodes, zoo tagnrho rau high- kub kev pab cuam cuam tshuam nrog ob qho kub thiab xeb. Lawv muab cov tshuaj austenitic thiab ferritic microstructures, muab kev sib npaug ntawm lub zog, tawv, thiab kev tawm tsam rau kev ntxhov siab corrosion tawg.
Kev ua tau zoo: nrog 22% chromium, 9% nickel, thiab 3% molybdenum, cov elecores khaws lub zog ntawm qhov kub txog 600 degree. Lawv cov qauv DUPLE XUA DISSIONS PUAS Oxidation thiab chloride {{5 5}}}} {} ast urity purity.
Cov ntawv thov: Siv roj rau sab nrauv thiab roj platform, uas muaj cov khoom siv kub (piv txwv li, los ntawm cov txheej txheem dej) thiab ntawm cov txheej txheem ntsev. Lawv kuj tau siv nyob rau hauv cov nroj tsuag desalination thiab cov tshuaj lom neeg cov tshuaj tiv thaiv ntawm 400-600 degree.
3. E7018 {- 1 (Hydrogen Hlau Hlau Hmoov Electrode)
Thaum lub sij hawm feem ntau paub txog kev tsim qauv vuam, E7018 {}}}}}} kub) thaum vuam tsawg-}}} aliecs. Lawv qhov qis - hydrogen txheej minimizes hydrogen {}} kev txhawj xeeb hauv hydrogen qhov twg uas tseem tshuav hydrogen uas seem tsis ua tiav.
Kev ua tau zoo: Welds tsim nrog E7018 {{}}}}}}}}} cov psi +) thiab zoo creep resistance ntawm 400-500 degree. Lub electrode ntawm cov hlau hmoov av-nplua nuj-nplua nuj ua kom sib sib zog nqus thiab cov qauv Weld uas muaj peev xwm txo cov pob qij txha uas tuaj yeem ua pob qij txha tsis muaj zog nyob rau hauv cov khoom kub.
Cov ntawv thov: Tsim nyog rau vuam siab cov hlab, boiler Cheebtsam, thiab cov kav dej hauv hluav taws xob, qhov twg ua haujlwm kub ntawm 300-500 degree. Lawv tshwj xeeb tshaj yog muaj nuj nqis rau lawv txoj kev ntseeg tau nyob hauv ib puag ncig kub thiab ib puag ncig cua sov.
4. Enicrfe - 3 (Nickel-based electrode)
Rau huab siab high - kub kev pab (saum 800℃{}}}}} -}} Cov nickel - chromium-hlau electrodes muaj kev zam hluav taws xob ua kom ruaj khov thiab tiv thaiv hlau corrosion.
Kev ua tau zoo: Muaj cov ntsiab lus npib tsib xee ntawm 67-71% thiab chromium cov ntsiab lus ntawm 14-17%, lawv muaj lub zog thiab kev kub ntxhov ntawm qhov kub tshaj 1000 degree. Lawv kuj tseem tiv taus carburization thiab sulfation, cov teeb meem uas muaj muaj cov cua sov siv siv cov tshuab roj mydrocarbon.
Cov Kev Siv: Siv hauv Aerospace Cheebtsam (piv txwv li, cov dav hlau cav nkag), muaj cua sov cua sov cov khoom siv. Lawv feem ntau tau teev tseg rau vuam ingonel® lossis Hastelloy® alloys, uas tau siv dav hauv qhov siab {}}}} qhov chaw ib puag ncig.
Kev xaiv xaiv rau high -} kub cov hluav taws xob
Xaiv qhov yog electrode rau high - kev pab kub yog nyob ntawm peb qhov tseem ceeb:
Kev ua haujlwm kub ntau yam: rau qhov kub hauv qab no 500 degree, e7018-1 lossis E2209 yuav txaus. Rau 500 15℃degree, e310 series hluav taws xob yog nyiam. Rau saum 1000 degree, enicrfe-3 yog qhov pom zoo.
Ib puag ncig qhov chaw: Yog tias ib puag ncig muaj cov roj corrosive los yog noo noo, ua ntej E2209 (rau chloride ib puag ncig) lossis E310 (rau oxidizing roj). Rau qhov ntshiab siab - kub, qis {- corrosion scenarios, E7018-1 lossis Ericrfe-3 yuav tsim nyog.
Cov khoom siv uas muaj peev xwm: phim cov electrode cov khoom siv rau hauv paus hlau. Piv txwv li, siv E310 nrog 310 tus hlau stainless, thiab enicrfe- 3 nrog cov nickel-based alloys kom zam dhau galvanic corrosion lossis thermal expansion mismatches.
Tag
Siab - kev pab kub uas xav tau cov electrodes uas sib npaug lub zog, oxidation tsis kam, thiab thermal stability. E310 Series Electrodes Excel nyob rau hauv high- kub oxidizing ib puag ncig hauv cov txheej txheem kev lag luam zoo hauv kev lag luam tshwj xeeb hauv kev lag luam tshwj xeeb. Los ntawm cov txheej txheem kev xaiv electrode nrog kev ua haujlwm kub, ib puag ncig cov khoom siv, thiab cov hauv paus cov khoom siv tau, kev ua tau zoo nyob rau hauv cov tshuab kub siab.
Raws li kev muaj cov txheej txheem txuas ntxiv mus thawb cov kev txwv ntawm kub thiab siab, {}} hydrogen formulations {}}}}} kub weld kev ntseeg tau. Txog cov ntawv thov tshwj xeeb, sab laj cov ntaub ntawv cov ntaub ntawv thiab cov qauv kev lag luam (piv txwv li, AWS ANS D1.1 rau vuam qauv) tseem ceeb rau kev xaiv.
