Thaum ib tug neeg hais tias Hastelloy qhov chaw, feem ntau xav txog cov mos txwv khawv koob rau corrosion. Cov ntaub ntawv xov tooj yog qhov zoo siab, paub meej, tab sis qhov ntawd yog qhov kev sib tham tiag tiag pib, tsis xaus. Kuv tau pom ntau tus qauv tsis zoo vim tias lawv tau kho Hastelloy C-276 lossis C-22 zoo li cov khoom tsis zoo. Tsis yog. Qhov sib txawv ntawm cov alloy lub peev xwm thiab kev ua haujlwm zoo, txhim khu kev qha yog qhov ua haujlwm tiag tiag tshwm sim - hauv qhov chaw tsim khoom thiab ntawm lub tshuab khw hauv pem teb.
Cov Lus Qhia Casting: Nws yog txhua yam hauv kev pub
Kev nqis peev casting yog qhov mus-mus rau complex Hastelloy alloy qhov chaw, tshwj xeeb tshaj yog cov nyias-walled, intricate duab peb feem ntau pom nyob rau hauv aerospace los yog tshuaj nozzle daim ntaub ntawv. Cov alloy siab nickel thiab molybdenum cov ntsiab lus muab nws cov lus dab neeg tsis kam, tab sis nws kuj ua rau nws yog tsiaj nyaum los nrum huv si. Lub solidification ntau yam yog dag. Koj tau kua muag kub yog tias koj lub rooj vag thiab nce siab tsis pom qhov chaw. Nws tsis yog ib yam uas koj twv; nws yog xyoo qauv.
Peb kawm qhov no nyuaj heev thaum ntxov. Ib pawg ntawm lub cev valve rau tus neeg siv khoom, txhais tau tias rau kev pabcuam chloride hnyav. Cov qauv dhau los PT, saib zoo meej. Tab sis nyob rau hauv hydro-test, ob peb cov plaub hau tsim tawm los ntawm kev sib tshuam. Qhov teeb meem? Micro-shrinkage. Inconspicuous, tsis nyob rau saum npoo, tab sis ib tug tuag flaw. Cov tshuaj tsis yog siv hlau zoo xwb. Nws yog redesigning lub taub hau pub, kho qhov kub thiab txias nkhaus, thiab txawm lub orientation ntawm ib feem nyob rau hauv lub pwm pawg. Qhov ntawd yog sab unglamorous ntawm tshwj xeeb alloys.
Ib lub khw uas paub qhov no, zoo li Qingdao Qiangsenyuan Technology (QSY), muaj ntug. Nrog peb lub xyoo caum hauv lub plhaub thiab peev casting, lawv tau zoo li nchuav txhua yam thiab tsis pom tseeb nickel-raws li alloy tawm muaj. Lub koom haum nco txog yuav ua li cas, hais tias, Hastelloy X coj tus cwj pwm piv rau Hastelloy B-3 thaum lub caij txias yog qhov tsis muaj nqi. Koj tsis tuaj yeem rub tawm qhov ntawd los ntawm cov ntaub ntawv database.
Machining: Qhov twg Tooling Budgets mus tuag
Yog hais tias casting yog hais txog coaxing hlau mus rau hauv cov duab, machining yog ib tug tswj kev sib ntaus. Hastelloy ua haujlwm nyuaj. Ua nruj ua tsiv. Ib me ntsis npub ntxig los yog qhov zoo tshaj plaws pub tus nqi, thiab koj nyuam qhuav tsim ib qho chaw hauv cheeb tsam nyuaj dua li koj lub tshuab txiav. Koj tsis yog txiav lawm xwb; koj nyob nraum sib tsoo thiab tsim insane tshav kub, uas ntxiv degrades lub cuab tam thiab yuav cuam tshuam rau ib feem ntawm metallurgy.
Lub tswv yim yog qis thiab qeeb. Kev kub siab txias txias, nruj kev teeb tsa, thiab hwm, cov cuab yeej tshwj xeeb geometry yog tsis sib tham. Carbide yog tus qauv, tab sis qee zaum koj poob rau hauv ceramic lossis CBN rau kev ua tiav. Tus nqi ib feem tsis nyob hauv cov khoom thaiv; nws yog nyob rau hauv lub tooling noj thiab tshuab lub sij hawm. Kuv nco qab txog qhov project rau lub nplhaib loj-ntev los ntawm Hastelloy C-2000. Kev ua haujlwm tig tau ncaj nraim kom txog rau thaum peb ntaus hauv qhov zawj. Standard grooving inserts chipped nyob rau hauv feeb. Peb xaus nrog kev siv cov khoom siv hauv av, qhov zoo-rake thiab txo cov khoom noj los ntawm 40%. Nws hnov mob qeeb, tab sis nws yog tib txoj hauv kev kom tau txais kev huv huv yam tsis muaj txheej txheej rov qab.
Qhov no yog qhov chaw sib xyaw ua ke qhia lawv tus nqi. Ib lub tuam txhab tuav ob qho tib si casting thiab CNC machining hauv tsev, zoo li QSY hais, tuaj yeem txhim kho tag nrho cov txheej txheem. Lawv tuaj yeem tso tawm cov tswv yim machining Tshuag ntawm cov casting, paub meej npaum li cas cov ntaub ntawv lawv tus kheej CNC department xav tau los ntxuav cov tawv nqaij thiab ua tau raws li lub siab ntev. Nws tshem tawm qhov kev ua si liam ntawm cais casting thiab machining cov neeg muag khoom.
Qhov tshwj xeeb hauv cov alloys tshwj xeeb
Cov neeg siv khoom feem ntau tuaj nrog kev thov rau Hastelloy yam tsis tau qhia txog qib. Uas zoo li thov steel. Kev xaiv ntawm B-2 rau txo cov kua qaub, C-276 rau cov oxidizers sib xyaw, lossis G-30 rau phosphoric acid ib puag ncig yog qhov tseem ceeb. Nws yog chemical compatibility puzzle. Tab sis muaj lwm txheej: fabricability. C-276 yog tus neeg ua haujlwm rau ib qho laj thawj - nws yog qhov sib txuas ntau dua thiab ruaj khov thoob plaws ntau yam. B-2 yog qhov tsis txaus ntseeg thaum lub sijhawm vuam yog tias tsis ua haujlwm zoo.
Tom qab ntawd muaj cov khoom siv raw khoom nws tus kheej. Mill daim ntawv pov thawj yog yuav tsum tau, tab sis traceability yog huab tais. Rau qhov tseem ceeb ntawm cov kev pabcuam, koj yuav tsum paub tus lej ntawm cov cua sov, kev tshuaj xyuas tshuaj, thiab qhov zoo tshaj plaws, muaj cov ntawv pov thawj los ntawm tib lub tshav kub rau cov txheej txheem tsim nyog. Qhov no tsis yog sib tham tau rau kev lag luam xws li offshore roj & roj lossis tshuaj.
Lub peev xwm los tsim thiab txheeb xyuas cov alloys tshwj xeeb no yog qhov tseem ceeb muaj peev xwm. Ib tus neeg muag khoom lub network thiab kev ntseeg siab nrog cov mills loj tseem ceeb. Thaum lub tuam txhab teev Nickel-raws li alloys Raws li ib qho tshwj xeeb, nws txhais tau hais tias lawv muaj cov saw hlau thiab cov txheej txheem pov thawj uas tau hu rau hauv. Nws tsis yog hais txog kev muaj daim ntawv teev npe; nws yog hais txog muaj kev ntseeg siab.
Thaum Zoo Tsis Txaus Tsis Txaus: Kev Tshuaj Ntsuam Xyuas Gauntlet
Kev ua tiav ib feem yog ib yam. Ua pov thawj tias nws haum rau kev pabcuam yog lwm qhov. Rau Hastelloy alloy qhov chaw, kev kuaj pom thiab qhov loj me tsuas yog qhib txoj cai. Dye penetrant testing (PT) yog tus qauv rau qhov tsis xws luag. Tab sis rau cov ntawv thov tseem ceeb, koj tab tom saib tag nrho cov duab hluav taws xob (RT) mus yos hav zoov rau sab hauv porosity lossis shrinkage, thiab kuaj ultrasonic (UT) rau kev sib koom ua ke ntawm kev sib koom ua ke.
Qhov kev sim tiag tiag, qhov tseeb, feem ntau yog kuaj corrosion. ASTM G28 Txoj Kev A rau intergranular attack susceptibility yog ib yam rau ntau qib Hastelloy los xyuas kom rhiab heev ntawm vuam los yog kev kho cua sov tsis raug. Qhov no tsis ceev. Nws suav nrog kev ua kom sov cov qauv hauv cov tshuaj ferric sulfate-sulfuric acid rau 24 teev, tom qab ntawd ntsuas qhov hnyav. Nws yog qhov kev sim ua kom puas tsuaj, yog li koj xav tau daim coupon pov thawj los ntawm tib pawg. Cov kauj ruam no cais cov tuam txhab tsim khoom los ntawm cov khoom lag luam.
Kev tswj tag nrho cov gauntlet zoo no yuav tsum muaj qhov system. Nws yog cov ntaub ntawv, calibration records, certified inspectors, thiab ib kab lis kev cai uas tsis txiav fab. Ib lub tuam txhab muaj hnub nyoog 30 xyoo hauv qhov chaw no tau muaj sia nyob vim lawv tau tsim cov kab ke ntawd. Lawv lub vev xaib yuav tsuas yog hais tias machining, tab sis cov khoom tiag tiag yog pob ntawv pov thawj uas tuaj nrog ib feem.
Lub Pragmatic Takeaway
Yog li, qhov no txhais li cas rau ib tus neeg muab cov khoom no? Ua ntej, txav dhau ntawm cov khoom siv qib. Qhia meej rau qhov chaw thov - qhov kub thiab txias, media, concentrations, pressures. Thib ob, ua qhov tseem ceeb ntawm cov txheej txheem muaj peev xwm tshaj tus nqi. Qhov pheej yig tshaj casting lossis machining quote feem ntau yog qhov yuam kev kim tshaj plaws. Nug txog lawv qhov kev paub tshwj xeeb nrog koj cov qib uas koj xaiv, thov kom pom cov xwm txheej zoo sib xws lossis txawm mus xyuas qhov chaw.
Saib rau ntsug kev koom ua ke. Ib tus neeg muag khoom uas tswj kev taug kev los ntawm cov hlau molten kom tiav, soj ntsuam ib feem, zoo li cov nrog ua ke peev casting thiab CNC muaj peev xwm, inherently muaj tsawg dua cov ntsiab lus tsis ua hauj lwm. Lawv muaj tag nrho cov saw zoo. Thaum kawg, hwm tus kws tshaj lij. Cov khw zoo daws teeb meem koj tsis paub tias koj muaj. Lawv yuav nug cov lus piav qhia uas tsim kom muaj kev ntxhov siab nyob rau hauv cov hlau no, los yog qhia txog kev hloov pauv me ntsis los txhim kho castability.
Thaum kawg, ua tiav Hastelloy alloy qhov chaw tsis tau yuav ntawm lub txee. Lawv yog cov txiaj ntsig ntawm kev sib koom tes ntawm kev paub tsim thiab kev tsim khoom raws caij nyoog, qhov twg cov khoom siv cov cuab yeej cuab tam tau ua ncaj ncees muab txhais ua ib feem uas tsis yog raws li spec, tab sis muaj sia nyob hauv lub ntiaj teb tiag. Qhov ntawd yog qhov txawv ntawm ib feem uas tau ua los ntawm Hastelloy thiab ib qho uas ua tau zoo li nws.
