1. Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm kev siv Hastelloy C-276 tiaj tus bar hauv cov qauv tsim rau corrosive ib puag ncig piv rau phaj lossis ntawv?
Hastelloy C-276 tiaj tus tuav muaj kev sib xyaw ua ke ntawm qhov ruaj khov, yooj yim ntawm kev tsim, thiab cov khoom siv tau zoo rau cov khoom siv hauv kev ua haujlwm hnyav, marine, thiab flue gas desulfurization (FGD) systems. Tsis zoo li phaj, uas yog siv rau loj, welded siab hlab ntsha los yog tank phab ntsa, tiaj tus tuav yog haum rau nruab nrab - load, linear structural daim ntaub ntawv. Lawv cov txheej txheem txheej txheem ntoo khaub lig- ntu (cov tuab tuab ntawm 3mm txog 50mm, dav ntawm 20mm txog 300mm) muab qhov zoo tshaj plaws hauv qhov tawv nqaij thiab ntau yam npaj tau-- siv cov chaw. Qhov no ua rau lawv nyiam cov khoom lag luam rau kev tsim cov khoom tseem ceeb xws li kev txhawb nqa kab, brackets, tawb tshuab rau sab hauv, drip rings, thiab stiffening tav nyob rau hauv cov txheej txheem cov hlab ntsha. Muab piv rau kev tsim cov khoom zoo sib xws los ntawm phaj- uas yuav tsum tau txiav cov strips, ua rau cov khoom siv khib nyiab ntau dua thiab ua haujlwm ntau dua - cov kab tiaj tiaj muaj kev siv nyiaj ntau dua thiab sai dua. Lawv tuav tag nrho cov lus dab neeg corrosion kuj ntawm C-276 (tshwj xeeb tiv thaiv pitting, crevice corrosion, thiab kev nyuaj siab corrosion cracking nyob rau hauv chloride thiab acidic media) tab sis nyob rau hauv ib daim ntawv optimized rau tsim lub "skeleton" ntawm cov txheej txheem cov cuab yeej es tsis yog cov phab ntsa.
2. Thaum fabricating nrog Hastelloy C-276 tiaj tus bar, dab tsi yog qhov tseem ceeb rau kev siv vuam thiab kev kho tom qab vuam kom muaj kev ua haujlwm corrosion?
Vuam yog ib qho txheej txheem tsim rau Hastelloy C-276 tiaj tus tuav, siv los tsim cov thav duab lossis txuas rau lwm cov khoom. Qhov kev txhawj xeeb tseem ceeb tshaj plaws yog khaws cia cov alloy raws li -welded corrosion kuj, uas nws tau tsim tshwj xeeb. C-276 cov pa roj carbon tsawg thiab tswj cov ntsiab lus silicon txo qis cov carbide thiab tshem tawm theem tsim nyob rau hauv qhov vuam cua sov- thaj tsam cuam tshuam (HAZ). Txawm li cas los xij, cov kev coj ua zoo tshaj plaws tsis yog - sib tham. Ua ntej, siv cov hlau sib txuam, xws li ERNiCrMo-4. Thib ob, siv cov txheej txheem vuam nrog cov khoom siv hluav taws xob tsawg (xws li GTAW / TIG) thiab cov txheej txheem stringer hlaws kom txo qis lub sij hawm cov hlau siv nyob rau hauv qhov tseem ceeb ntawm 1200-1600℃F (649-871 degree) ntau qhov chaw uas muaj teeb meem microstructural theem tseem tuaj yeem ua nag lossis daus. Lub tiaj tiaj tus geometry yuav tsum tau ua tib zoo kho kom tsis txhob muaj kev cuam tshuam vim qhov cua sov concentration. Qhov tseem ceeb, kev kho cua sov tom qab vuam feem ntau tsis pom zoo rau C-276. Qhov kev daws teeb meem-annealed mob ntawm lub tiaj tus bar muab kev pom zoo corrosion kuj. Txhua qhov kev kho kub kub tom ntej, tshwj tsis yog tswj tau zoo, tuaj yeem ua rau nws tus kheej ua rau muaj kev kub ntxhov. Tus txheej txheem kev xyaum yog weld kom raug thiab tawm hauv lub vuam nyob rau hauv lub xeev raws li-welded, ua raws li kev tu kom huv si (pickling thiab passivation) kom tshem tawm cov oxides thiab rov qab cov zaj duab xis passive nto.
3. Kev ua haujlwm li cas - tus yam ntxwv hardening ntawm Hastelloy C-276 cuam tshuam rau kev khoov txias thiab kev ua haujlwm ntawm cov kab ncaj nraim, thiab qhov no tswj tau li cas?
Hastelloy C-276 tiaj tus bar muaj lub suab nrov ua haujlwm- khov sai thaum lub caij txias deformation. Cov cuab yeej no nthuav tawm qhov kev sib tw tseem ceeb thaum ua haujlwm xws li khoov txias, dov, lossis xuas nrig ntaus. Raws li cov hlau yog deformed, nws lub zog thiab hardness nce sai sai ntawm qhov taw tes ntawm kev nyuaj siab, yuav tsum tau muaj zog ntau dua rau kev deformation ntxiv thiab ua rau muaj kev pheej hmoo ntawm springback thiab, tseem ceeb, tawg los yog tearing, tshwj xeeb tshaj yog nyob rau sab nraud ntawm ib tug khoov. Txhawm rau tswj qhov no: 1) Kev khoov qeeb qeeb thiab kev siv lub voj voog loj dua yog qhov tseem ceeb; qhov tsawg kawg nkaus khoov vojvoog ntawm 3-5 zaug lub thickness bar feem ntau pom zoo. 2) Lub zog, nruj machinery yuav tsum tau ua kom tiav qhov khoov ua ntej ua hauj lwm-hardening nres cov txheej txheem . 3) Rau ntse khoov los yog loj forming, intermediate annealing tej zaum yuav tsim nyog. Qhov no suav nrog cua sov rau qhov chaw ua haujlwm nyuaj rau cov tshuaj annealing kub (nyob ib ncig ntawm 2150℃F / 1177℃) ua raws li sai quenching kom rov qab ductility. Txawm li cas los xij, qhov no yog ib qho tshwj xeeb, kev kho cua sov uas tuaj yeem ua rau muaj kev cuam tshuam thiab kev tsim cov nplai, yuav tsum tau ntxuav tom qab. Yog li ntawd, fabrication drawings rau C-276 tiaj bar Cheebtsam yuav tsum tau tsim nrog formability nyob rau hauv lub siab kom txo tau cov tsis tsim nyog ua hauj lwm txias.
4. Nyob rau hauv dab tsi tshwj xeeb daim ntawv thov nyob rau hauv cov tshuaj thiab tshuaj zoo industries yog Hastelloy C-276 tiaj bar cov khoom ntawm xaiv?
Nyob rau hauv cov high -purity, tswj industries, Hastelloy C-276 tiaj bar yog teev rau daim ntaub ntawv uas corrosion kuj, khoom purity, thiab cleanability yog qhov tseem ceeb. Nws qhov chaw tsis muaj kab mob thiab ua rau muaj ntau yam ntawm cov txheej txheem tshuaj ua rau nws zoo tagnrho rau cov tswv cuab hauv:
Cov txheej txheem txhawb nqa Framing: Txhim kho qhov nruj, huv si -hauv- qhov chaw (CIP) cov txheej txheem ua haujlwm tau zoo rau kev tuav cov kav dej, lim vaj tse, thiab ntsuas ntsuas hauv cov tshuaj tiv thaiv thiab kev ua kom huv.
Dip Pipes thiab Spargers: Fabricated los ntawm cov tiaj tiaj tiaj (feem ntau dov thiab welded) los tsim cov kav dej thiab cov khoom siv roj xa mus rau hauv cov tshuaj tiv thaiv sib xyaw.
Filter Press Plates thiab Frames: Hauv phaj-thiab-frame filters tuav corrosive pharmaceuticals los yog intermediates, C-276 tiaj bar muab cov qauv kev ncaj ncees rau cov phaj lim thiab cov sealing nto.
Basket thiab Rack Systems: Siv rau hauv kev tu, ziab, lossis txheej txheej uas cov khoom yuav tsum tiv taus ob qho tib si corrosive agents thiab thermal cycles.
Modular System Txhawb: Rau GMP (Kev Tsim Kho Zoo) ua raws cov txheej txheem kev ua haujlwm tsis zoo, cov kab tiaj tiaj muab kev tiv thaiv corrosion-tiv taus lwm txoj rau coated carbon steel rau kev taug kev grating kev txhawb nqa, tes tuav, thiab cov khoom siv mounts, kom tsis txhob xeb kab mob thiab ntev - lub sij hawm structural integrity.2.
5. Los ntawm cov khoom siv thiab cov nqi- qhov kev xav tau qhov zoo tshaj plaws, dab tsi yog qhov tseem ceeb thaum nrhiav thiab qhia Hastelloy C-276 tiaj tus bar rau ib qhov project?
Kev yuav khoom C-276 tiaj tus bar yuav tsum muaj kev npaj tswv yim vim nws cov ntsiab lus siab nickel thiab molybdenum, ua rau nws yog cov khoom zoo.
Mill vs. Service Center Source: Cov haujlwm loj tuaj yeem yuav ncaj qha los ntawm cov mills hauv cov qauv ntau thiab tsawg, thaum cov fabricators me me cia siab rau cov chaw pabcuam hlau uas muaj ntau qhov ntau thiab tsawg, muab kev yooj yim tab sis ntawm tus nqi.
Qhov Kev Ua Kom Zoo Tshaj Plaws: Ua tib zoo tsim cov khoom siv los siv qhov ntau thiab tsawg (thickness / dav ua ke) txo cov khib nyiab los ntawm kev txiav. Kev qhia txog kev kam rau siab (xws li ASTM B572 rau lub tiaj tiaj) uas yog "kev lag luam" es tsis yog "precision" tuaj yeem txo tus nqi tshwj tsis yog tias lub tshuab ua haujlwm tau npaj tseg.
Daim ntawv pov thawj yuav tsum muaj: Rau cov ntawv thov tseem ceeb, qhia tag nrho traceability nrog Mill Test Certificate (MTC) ua raws li ASTM lossis ASME cov qauv yog qhov tseem ceeb, txheeb xyuas cov tshuaj muaj pes tsawg leeg thiab cov khoom siv tshuab. Qhov no ntxiv kev ruaj ntseg tab sis kuj raug nqi.
Lead Time vs. Inventory: C-276 tsis yog ib yam khoom uas muaj nyob rau hauv txhua qhov ntau thiab tsawg. Cov sijhawm ncua sij hawm yuav tsum suav rau lub sijhawm ua cov hmoov txhuas, uas tuaj yeem yog ob peb lub lis piam lossis hli. Qee lub chaw pabcuam tuav cov khoom lag luam uas nrov tshaj plaws los txo qhov no.
Tag Nrho Cov Nqi Them Nqi Them Nqi Tshaj Tawm: Tus nqi pib yuav khoom yog siab. Cov lus qhia tshwj xeeb yog tsim nyog los ntawm Tag Nrho Cov Nqi Ntawm Cov Tswv Cuab Kev Ntsuam Xyuas: txo kev saib xyuas, tshem tawm cov kev kaw tsis tau npaj tseg vim kev ua haujlwm tsis zoo, thiab kev pab cuam txuas ntxiv feem ntau ua rau C-276 tiaj tus bar qhov kev xaiv pheej yig tshaj 20+ xyoo nyob rau hauv ib puag ncig kev pabcuam hnyav.
