1. Dab tsi yog cov txheej txheem ERW tsim rau Monel hlau 400 alloy leeg, thiab nws yuav cuam tshuam rau lub raj muaj cov khoom li cas?
ERW, lossis hluav taws xob tiv taus vuam, yog cov txheej txheem tseem ceeb siv los tsim cov monel hlau 400 erw alloy leeg. Cov txheej txheem pib nrog lub tiaj tus txaij ntawm monel 400 alloy, uas yog dov mus rau hauv ib tug cylindrical puab. Thaum cov npoo ntawm cov kab txaij tau coj los ua ke, hluav taws xob hluav taws xob tau dhau los ntawm cov ntsiab lus tiv toj, tsim hluav taws xob kub. Cov cua sov no yaj cov npoo, fusing lawv ua ke los ua kev txuas ntxiv weld yam tsis muaj kev xav tau cov khoom siv.
Cov txheej txheem erw cuam tshuam ntau lub raj ntawm cov khoom. Welded sib koom ua ke, thaum ua kom tau zoo tua pov tseg rau lub hauv paus hlau, kom lub raj muaj peev xwm tiv thaiv kev ntxhov siab hauv ntau daim ntawv thov. Lub siab precision ntawm cov ntawv erw tso cai rau kev ua kom zoo ib yam kev raug, nrog nruj kev thev taus ntawm txoj kab uas hla thiab phab ntsa tuab. Qhov kev sib txuam no yog qhov tseem ceeb rau cov ntawv thov uas xav tau ib qho snug haum, xws li hauv cov piping tshuab. Ib qho ntxiv, cov txheej txheem muaj txiaj ntsig zoo thiab raug nqi {{}}}}}}}}}}} Txoj Hlua 400 Erdw tau yooj yim muaj rau kev siv. Txawm li cas los xij, nws yog ib qho tseem ceeb kom nco ntsoov tias cov khoom siv hluav taws xob tsis tuaj yeem ua rau muaj kev tsis txaus siab thiab muaj kev cuam tshuam rau cov khaub thuas txias, uas yuav muaj zog ua haujlwm thiab lub zog. Yog li, nruj me ntsis tswj hwm thaum ERW yog qhov tseem ceeb los tswj lub raj ntawm kev ncaj ncees.
2. Mej cov monsy hlau 400 npaum li cas Alloy Tube ua yeeb yam hauv cov khoom muaj ib puag ncig hauv kev thaj chaw ib puag ncig.
Monel hlau 400 erw alloy raj muaj npe rau nws cov tshuaj lom neeg tshwj xeeb (}}}} Daim ntawv sau no ua ib zaj duab xis tiv thaiv tiv thaiv ntawm sab, uas ua raws li kev thaiv kev tiv thaiv cov neeg sawv cev corrosive.
Nyob rau hauv seasater dej thiab cov raj tsis kam pitting, crevice corrosion, thiab kev nyuaj siab corrosion tawg. Lub npib tsib xee cov ntsiab lus txhim kho kom txo qis chaw tiv thaiv ib puag ncig, ua rau nws zoo tagnrho rau cov khoom siv marine xws li cov khoom siv nkoj thiab tshuaj pleev ib yam. Nws tseem ua tau zoo nyob rau hauv acidic media xws li hydrochloric acid (Hydr) thiab hydrofluoric acid (HF) nyob rau hauv tsis- oxidizing tej yam kev mob. Piv txwv li, hauv kev ua yeeb yam siv, nws tuaj yeem siv cov tshuaj lom neeg mus rau qhov ntau ntawm cov kua qaub uas tsis muaj kev ua haujlwm tseem ceeb.
Txawm li cas los xij, nws tsis tshua tiv taus oxidizing cov kua qaub zoo li nitric acid (hnoos), raws li lawv tuaj yeem tsoo cov zaj duab xis passive. ERW Weld Viseam, thaum kho kom raug, tswj tib cov hlau, kom tag nrho cov raj ua yeeb yam nyob rau ib puag ncig hnyav.
3. Dab tsi yog cov cuab yeej siv tshuab ntawm Monel hlau 400 ERW alloy leeg, thiab lawv yuav ua li cas lawv hnav cov ntawv thov kev lag luam?
Monel hlau 400 yaig alloy hlab muaj cov txheej txheem kho tshuab uas ua rau lawv haum rau cov kev siv tau. Lawv muaj lub zog tensile xws li 480 mus rau 690 MPa, uas yog siab dua ntau cov roj carbon hlau, tso cai rau lawv tiv thaiv lub siab hauv cov tshuab raj. Cov txiaj ntsig lub zog, feem ntau ntawm 170 thiab 480 MPa, ua kom lub raj ua tau tawm tsam tsis muaj zog nyob hauv qab.
Cov hlab no tseem pom tau zoo ductility, nrog elongation ntawm 30 - 40% nyob rau hauv lub xeev annealed. Txoj kev saib xyuas no ua rau lawv khoov duav, flanged, los yog tsim rau hauv ntau yam duab yam tsis muaj kev tawg, muaj txiaj ntsig zoo hauv kev teeb tsa thiab kev sib tw. Cov txheej txheem ERW vuam tsis muaj kev cuam tshuam cov khoom siv no thaum ua kom raug; Weld sib koom tes khaws cov peev txheej txaus thiab ductility kom phim cov raj ntawm lub raj.
Tsis tas li ntawd, Monel 400 Erd cov raj tswj lawv cov kev ntseeg siab ntau tshaj li qhov dav dav ntau, los ntawm cryogenic tej yam kev mob txog li ntawm 427℃(800℃f). Cov versatility no tso cai rau lawv siv hauv ob qho kev siv tsawg- sov daim ntawv thov, xws li Lur ua, thiab nruab nrab- kub muaj kev hloov pauv. Lawv cov kev sib xyaw ua ke, ductility, thiab kub tsis kam ua rau lawv xaiv txoj kev xaiv tau rau kev lag luam uas kev ua haujlwm txhua yam hauv qab cov xwm txheej yog qhov tseem ceeb.
4. Dab tsi yog qhov kev txiav txim siab tseem ceeb rau kev txhim kho thiab tswj hwm Monel hlau 400 erw alloy leeg?
Txhim kho Monel hlau 400 ERW alloy hlab yuav tsum tau ua tib zoo saib xyuas kom tiv thaiv kev puas tsuaj thiab ua kom ntev {1} {lo lus ua tau zoo. Thaum lub sij hawm teeb tsa, zam kev siv cov cuab yeej ua los ntawm cov hlau uas tuaj yeem tawm cov hlau tawm ntawm cov raj raj, raws li cov lus no tuaj yeem ua rau Galvanic corrosion. Hloov chaw, siv tsis {4 {}} ferrous cuab yeej lossis tiv thaiv cov hlab nrog cov txheej txheej thaum lub sijhawm tuav. Thaum txiav cov hlab, xyuas kom huv si, tawg - cov npoo no los tiv thaiv cov dej xau hauv fittings. Vuam, yog tias xav tau rau kev sib txuas, yuav tsum siv cov khoom siv cev khaub ncaws (xws li enicu {{}- induced embrittlement.
Rau kev saib xyuas, kev tshuaj xyuas yog qhov tseem ceeb. Txheeb xyuas cov cim ntawm corrosion, tshwj xeeb tshaj yog nyob rau hauv crevices lossis thaj chaw uas lub raj tuaj rau hauv kev sib chwv nrog cov sib tiv tauj me me. Yog hais tias corrosion yog kuaj pom, ntxuav cov chaw cuam tshuam nrog cov abrasive me thiab siv cov txheej txheem tiv thaiv yog tias tsim nyog. Hauv cov tshuab nqa cov kua ntshav, saib xyuas cov kua dej ntau yam thiab ntsuas kub, raws li kev hloov pauv tuaj yeem nrawm corrosion. Tso dej ntws tawm ib ntus kom tshem tawm cov nyiaj tso nyiaj los yog cov paug pab tswj kev ua haujlwm txaus thiab tiv thaiv kev ua kom huv. Tsis tas li ntawd, kom ntseeg tau tias cov gaskets thiab cov ntsaws ruaj ruaj siv nrog cov hlab yog sib haum nrog ob qho tib si uas yuav ua rau cov ntsaws ruaj ruaj.
5. Hauv kev lag luam thiab cov ntawv thov tshwj xeeb yog Monel hlau 400 erw alloy tub keeb siv?
Monel hlau 400 ERW alloy leeg pom muaj thoob plaws hauv ntau qhov kev lag luam vim lawv corrosion tsis kam thiab lub zog kho tshuab. Hauv kev lag luam marine, lawv tau siv hauv dej hiav txwv mus rau hauv dej hiav txwv, dej txias dej pipelines, thiab kiv cov tes tsho ncej. Lawv lub peev xwm los tiv thaiv sillosion ua rau lawv tsis tseem ceeb rau cov nkoj, pob zeb ntug dej hiav txwv, thiab cov ntug dej hiav txwv.
Hauv kev lag luam ua lag luam, cov leeg no tau ua haujlwm hauv cov kav dej rau kev siv cov kua qaub (zoo li HCL thiab HF), alkalis, thiab tshuaj lom neeg. Lawv kuj tseem siv nyob rau hauv reactors, kev sib pauv cua sov, thiab cia lub tank sab nraud uas tsis kam rau kev txhoj puab yog qhov tseem ceeb heev. Cov roj thiab roj kev lag luam siv lawv nyob rau hauv downhole tubing, cov cuab yeej siv WAHHEAD, thiab cov kav dej rau kev thauj khoom sour roj (raws li lawv tiv thaiv sulfide kev ntxhov siab tawg.
Lub Aerospace kev lag luam siv Monel 400 ERW tsho hauv cov roj kab thiab cov khoom siv hydraulic, tau txais txiaj ntsig rau cov roj av. Hauv kev lag luam ua khoom noj khoom haus, lawv tau siv hauv cov khoom siv rau cov zaub mov acidic zoo li pickles thiab tiv thaiv} ua rau corrosion los ntawm cov khoom noj cov zaub mov. Tsis tas li ntawd, hauv cov nroj tsuag desalination, cov hlab no ua lub luag haujlwm tseem ceeb hauv cov kua dej khov, qhov twg}} saliny kua muaj zog txhim khu kev qha ua haujlwm.
