Thaum koj hnov 'Inconel peev casting', cov duab tam sim no feem ntau yog ib qho ntawm cov khoom siv tsis muaj zog lossis cov turbine blades glowing cherry liab. Qhov ntawd tsis yog qhov yuam kev, tab sis nws yog qhov pom ntawm theem uas glosses dhau qhov kev muaj tiag. Zaj dab neeg tiag tiag tsis yog hais txog cov alloy lub legendary siab-kub lub zog; nws yog hais txog kev ceev faj, feem ntau ntxhov siab ua las voos ntawm chemistry, tshav kub, thiab ceramic plhaub. Ntau tus xav tias koj tuaj yeem nrum 316 stainless, koj tuaj yeem nrum Inconel 718. Qhov kev xav ntawd yog qhov chaw pib los ntshav thiab lub sijhawm.
Qhov Kev Sib Tw Core: Nws yog Txhua Yam Txog Kev Tswj
Cia peb tau tshwj xeeb. Nrog Inconel, tshwj xeeb tshaj yog cov nag lossis daus-qib qib zoo li 718 lossis 625, koj tsis yog nchuav cov kua hlau xwb. Koj tab tom tswj xyuas cov kua zaub reactive ntawm npib tsib xee, chromium, niobium, thiab molybdenum uas xav tsim cov theem deleterious yog tias koj cia nws txias tsis ncaj ncees lawm. Cov txheej txheem kev nqis peev casting, nrog nws lub plhaub ceramic, muaj kev tswj xyuas zoo heev rau cov geometries nyuaj-xav tias kev sib xyaw ua ke cua txias hauv lub tshuab turbine hniav. Tab sis tib lub plhaub ntawd dhau los ua ib qho kev tiv thaiv thermal, cuam tshuam rau tus nqi solidification. qeeb dhau, thiab koj tau txais cov qoob loo ntau dhau lawm thiab cov Laves tsis zoo lossis delta theem ua rau hauv thaj tsam interdendritic, tua ductility thiab qaug zog lub neej. Kuv tau pom qhov chaw dhau X-ray tab sis tawg hauv qhov kev sim qis qis qis vim tias qhov microstructure tsis raug. Daim ntawv spec hais tias Inconel 718, tab sis qhov kev ua tau zoo yog nyob rau hauv cov ntsiab lus spec feem ntau tsis npog.
Qhov no yog qhov uas tus foundry qhov kev paub dhau los ua tsis yog sib tham. Nws tsis yog hais txog kev muaj lub tshuab nqus tsev induction melting (VIM) rauv. Nws yog hais txog cov txheej txheem ua ntej cam khwb cia: siv quav ciab tuag tsim kom txo qis shrinkage thiab warpage nyob rau hauv tus qauv nws tus kheej, formulation ntawm thawj slurry (feem ntau ib tug zircon-raws li lub ntsej muag), thiab cov txheej txheem stuccoing. Rau Inconel, plhaub permeability thiab kub lub zog xav tau qhov sib npaug sib txawv dua li cov hlau. Lub plhaub uas tuab heev tuaj yeem ntxiab roj thiab ua rau porosity; tsis muaj zog heev, thiab koj yuav muaj kev pheej hmoo ntawm kev khiav tawm lossis kev cuam tshuam thaum lub sijhawm kub kub. Peb tau kawm qhov no los ntawm kev mob siab ntawm lub cev valve ob peb xyoos dhau los. Zoo nkauj nto tiav, tab sis kev ntsuam xyuas ultrasonic qhia tawm cov shrinkage tawg nyob rau hauv cov ntu tuab. Tus neeg ua txhaum? Lub plhaub ci lub voj voog raug kaw, thiab cov thermal gradient thaum lub sij hawm solidification tsis tswj. Rov qab mus rau chav ciab.
Hais txog siv quav ciab, qhov kev tshem tawm (dewaxing) kauj ruam yog lwm yam kev kos duab. Nrog Inconel lub siab melting point, koj feem ntau siv high-pressure chav autoclaving. Tab sis yog tias cov qauv siv quav ciab tsis sib xws los yog lub zog siab nkhaus yog qhov hnyav dhau, koj tuaj yeem tawg lub plhaub ntsuab. Cov kab plaub hau tawg uas koj tsis tuaj yeem pom txawm tias yuav qhib thaum lub sijhawm 1500 ° C + preheat thiab dhau los ua ib qho fin lossis flash ntawm lub casting. Nws yog kev tsis lees paub. Qhov no yog hom txheej txheem tswj uas cais lub khw ua haujlwm los ntawm tus kws tshaj lij. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog lawv peb xyoo caum hauv peev casting thiab tshwj xeeb hais txog nickel-raws li alloys, yuav tsum tau tsim lub tsev qiv ntawv ntawm qhov ua rau-thiab-tshuaj los ntawm kev sim thiab ua yuam kev. Nws nyob hauv lawv tshuab muaj peev xwm ib yam nkaus - ua tiav ib qho kev nrum Inconel yuav tsum paub tias daim tawv nqaij ua li cas rau cov cuab yeej txiav, uas cuam tshuam rov qab mus rau qhov kev ncaj ncees ntawm qhov casting.
Daim Ntawv Pov Thawj Tom Qab: Kev kho cua sov yog ib feem ntawm cov txheej txheem Casting
Koj tsis tuaj yeem cais cov casting los ntawm nws cov kev kho cua sov. Nws tsis yog kev ua haujlwm thib ob; nws yog theem kawg ntawm solidification. Rau Inconel 718, koj tab tom saib kev kho mob thiab kev laus lub voj voog. Tab sis lub sij hawm thiab kub yog dictated los ntawm lub as-cast qauv. Yog tias koj cov qoob loo loj dua vim qeeb qeeb, koj yuav tsum tau kho qhov kev daws teeb meem. Tau nws tsis ncaj ncees lawm, thiab lub gamma double-prime (γ) ntxiv zog theem yuav tsis precipitate optimally. Ib feem yuav mos, ua haujlwm tsis zoo.
Kuv nco qab txog qhov project rau lub manifold ua haujlwm nyob rau hauv lub siab-siab, kub kub ib puag ncig. Cov castings tuaj tawm dimensionally zoo meej. Peb tau ua tus qauv 718 cua sov kho: 980 ° C tov, cua txias, ces 720 ° C tuav rau 8 teev, rauv txias rau 620 ° C, tuav rau 8 teev ntxiv, cua txias. Lub zog tensile tsuas yog nyob rau qis spec txwv. Qhov teeb meem? Homogenization. Lub microsegregation los ntawm casting tsuas yog txaus los tsim cov chemistry hauv zos variations uas cuam tshuam kev laus teb. Peb yuav tsum tau ntxiv ib theem siab dua-kub homogenization ua ntej lub voj voog tus qauv, uas cuam tshuam me ntsis kev loj hlob ntawm cov qoob loo tab sis muab peb cov qauv matrix. Nws ua haujlwm, tab sis nws ntxiv tus nqi thiab lub sijhawm voj voog. Zaj lus qhia: tus foundry's metallurgist thiab tus kws kho cua sov yuav tsum muaj kev sib tham tas li. Ib tus neeg muab kev pabcuam puv ntoob uas tuav ob qho tib si casting thiab CNC machining nyob rau hauv ib lub ru tsev, raws li QSY cov haujlwm qhia, muaj qhov zoo sib xws ntawm no. Lawv tswj tag nrho cov kab ke los ntawm siv quav ciab mus rau qhov ua tiav machined, yog li cov lus tawm tswv yim nruj.
Kev ntsuam xyuas tsis muaj kev puas tsuaj (NDT) kuj tseem siv rau tus cwj pwm txawv. Nrog Inconel castings rau cov ntawv thov tseem ceeb, koj feem ntau dhau ntawm tus qauv X-ray. Kev tshuaj xyuas fluorescent penetrant (FPI) yog ib qho yuav tsum tau ua rau qhov chaw tawg. Tab sis rau kev ncaj ncees sab hauv, tshwj xeeb tshaj yog nyob rau hauv nyias-walled seem, peb tau tsiv mus rau xam tomography (CT) scanning. Nws yog kim, tab sis rau ib tug complex roj nozzle nrog rau sab hauv, nws yog tib txoj kev kom paub tseeb tias tsis muaj ib tug tseem ceeb hloov los yog residual ceramics uas yuav tawg nyob rau hauv kev pab cuam. Qhov no yog theem ntawm kev soj ntsuam cov khoom xav tau.
Kev xaiv cov khoom: Tsis yog txhua qhov Inconels yog sib npaug rau Casting
Inconel yog tsev neeg. 625 feem ntau yog xaiv rau nws cov weldability thiab corrosion kuj, thiab nws yog feem ntau suav hais tias castable ntau tshaj 718 vim hais tias nws yog ib tug solid-solution ntxiv dag zog rau, tsis muaj hnub nyoog-hardened. Koj muaj kev txhawj xeeb txog kev kho cua sov tsawg dua, tab sis koj tseem yuav tau saib xyuas kom kub kua muag. Tom qab ntawd muaj Inconel 713C, vintage tab sis tseem-siv alloy rau turbine hniav, muaj zirconium thiab carbon rau grain ciam zog. Nws yog notoriously rhiab heev rau pouring kub. Ob peb degrees kub heev, thiab cov nplej mus ntxhib; txias heev, thiab koj tau txais mistrus. Nws yuav tsum muaj lub hauv paus uas khaws cov cav tsis zoo - txhua qhov cua sov, txhua qhov dej kub, txhua qhov ntau ntawm cov hlau alloy.
Kev xaiv ntawm cov hlau feem ntau los ntawm qhov chaw ua haujlwm thiab qhov chaw ntawm cov geometry. Ib tug zoo li tus yam ntxwv bracket yuav ploj mus nrog 625. Ib tug rotating tivthaiv nyob rau hauv kev ntxhov siab ntawm 700 ° C yuav xav tau 718 rau nws creep zog. Tab sis tsim ib feem rau castability yog 50% ntawm kev sib ntaus sib tua. Lub kaum ntse ntse yog yeeb ncuab. Uniform phab ntsa thickness yog npau suav koj caum. Peb ib zaug yuav tsum rov tsim kho qhov hloov pauv ntawm lub tsev nyob rau lub sijhawm nrog tus kws tsim qauv tsim, ntxiv cov fillets thiab tav, ua ntej lub simulation software pom lub suab nrov. Qhov kev sib koom tes ntawm tus tsim qauv thiab foundry engineer yog tus nqi tsis tau. Nws yog ib yam dab tsi uas koj txhim kho ntau xyoo, thiab nws tau hais qhia nyob rau hauv lub neej ntev ntawm lub tuam txhab kev ua haujlwm, zoo li keeb kwm dhau 30 xyoo tau sau tseg rau QSY. Lub sijhawm ntawd qhia tias lawv tau pom cov qauv tsim no suav tsis txheeb.
Thiab cia peb tsis txhob hnov qab tus nqi seem. Inconel revert cov khoom muaj txiaj ntsig, tab sis nws cov chemistry yuav tsum nruj tswj hwm thaum rov qab mus rau hauv cov yaj. Kev sib kis nrog lwm cov nickel alloys lossis txawm tias sib txawv ntawm Inconel tuaj yeem thawb cov khoom xws li niobium lossis titanium tawm ntawm spec. Lub chaw tsim khoom loj yuav muaj qhov kev tswj xyuas rov qab nruj me ntsis, feem ntau melting revert nyob rau hauv ib qho kev sib cais ntawm cov cua sov siv rau hauv cov ntawv thov tseem ceeb. Nws yog ib qho khoom siv nqi game ntau npaum li ib qho kev ua haujlwm.
Lub Ntiaj Teb Kev Sib Haum Xeeb: Tus Nqi vs
Cov txheej txheem no kim heev. Lub alloy yog kim. Cov cuab yeej siv rau cov qauv siv quav ciab yog kim. Cov khoom siv plhaub yog kim. Lub zog rau lub tshuab nqus tsev melting thiab kev kho cua sov yog kim. Yog li thaum twg koj xaiv Inconel peev casting? Thaum qhov kev ua haujlwm ua rau nws kiag li. Thaum nws yog ib qho khoom muaj nqis siab uas tsis ua haujlwm yog kev puas tsuaj, lossis qhov twg qhov nyuaj tshem tawm cov machining los ntawm billet raws li kev xaiv. Peb tab tom tham txog qhov chaw uas qhov kev yuav-rau-fly piv (qhov hnyav ntawm cov khoom siv raw piv rau qhov tiav) yog astronomical yog machined. Casting tau txais koj ntau ze rau net zoo li.
Tab sis muaj ib cheeb tsam kev sib haum xeeb. Qee zaum, rau cov khoom tseem ceeb tsawg, koj tuaj yeem xaiv rau txoj hauv kev hybrid. Cam khwb cia cov duab dav dav, tab sis tawm cov khoom lag luam ntxiv rau ntawm qhov tseem ceeb sealing nto los yog ntsia liaj qhov rooj qhov rau CNC machining mus ntaus zoo tag nrho tolerances. Qhov no yog qhov chaw sib xyaw ua ke ci. Kev xa khoom tsis yooj yim, raws li-cam khwb cia Inconel ib feem rau lub khw muag khoom sib txawv yuav ua rau muaj kev puas tsuaj thiab ntxiv kev thauj mus los. Muaj nws tag nrho ua tiav nyob rau hauv ib qho chaw, raws li implied los ntawm QSY cov kev pabcuam casting thiab machining ua ke, txo qhov kev pheej hmoo thiab tuaj yeem txhim kho kev tswj xyuas tag nrho. Koj tsis yog yuav ib qho casting xwb; koj tab tom yuav cov saw muaj peev xwm.
Lo lus kawg yog ntawm kab lis kev cai zoo. Nrog rau cov ntaub ntawv thiab cov txheej txheem no, cov ntaub ntawv thiab traceability yog ib feem ntawm cov khoom. Lub casting yuav tsum tuaj nrog cov ntaub ntawv pov thawj, cov kab kos kho cua sov, thiab NDT cov ntaub ntawv. Nws yog ib tug dossier. Yog tias tus neeg muag khoom tsis txaus siab los muab cov ntaub ntawv qib ntawd, taug kev mus. Ib feem tsis yog lub cev khoom xwb; nws yog qhov lav ntawm cov txheej txheem uas ua rau nws. Tom qab peb xyoos lawm, ib lub tuam txhab nkag siab tias nws lub koob npe nrov yog tsim los ntawm cov ntawv sau ntau npaum li ntawm cov khoom xa tawm ntawm lub qhov rooj.
Saib rau pem hauv ntej: Evolving Craft
Txhua yam no mus qhov twg? Additive manufacturing (3D printing) hauv Inconel tau txais xovxwm ntau, thiab yog vim li cas. Nws muaj insane geometric kev ywj pheej. Tab sis rau nruab nrab-rau-siab ntim ntau lawm ntawm me me, complex qhov chaw, peev casting tseem tuav ib tug muaj zog economic ntug. Lub neej yav tom ntej, kuv xav tias, yog nyob rau hauv hybridization. Siv 3D luam ntawv los tsim cov qauv siv quav ciab lossis txawm tias cov cores ceramic ncaj qha, tso cai rau cov geometries yav dhau los tsis tuaj yeem pwm, tom qab ntawd siv cov txheej txheem peev txheej txheej txheem rau saum npoo av thiab metallurgical zoo. Nws yog ib qho exciting convergence.
Simulation software kuj tau zoo dua. Finite element tsom xam rau solidification thiab kev nyuaj siab yog txav los ntawm ib tug zoo-rau-muaj mus rau ib tug txheej txheem cuab yeej. Tab sis cov software tsuas yog zoo li cov khoom ntiag tug database thiab ciam teb tej yam kev mob uas koj pub rau nws. Cov ntaub ntawv ntawd yog tsim los ntawm qhov kev sim siab tiag tiag thiab lub kua muag - hom kev paub hauv tsev kawm ntawv uas sau rau hauv kev ua haujlwm ntev. Koj tsis tuaj yeem simulate txhua yam; koj tseem xav tau tus kws tshaj lij txoj kev xav kom paub thaum simulation yog dag.
Yog li, rov qab mus rau qhov pib. Inconel peev casting yog tsawg txog brute quab yuam thiab ntau ntxiv txog finesse. Nws yog ib txoj hlua ntawm ib puas tswj cov kauj ruam, txhua tus muaj peev xwm ua txhaum cov khoom kawg. Kev vam meej yog los ntawm kev hwm cov ntaub ntawv tus cwj pwm, nkag siab txog cov txheej txheem nuances, thiab muaj lub siab ntev - thiab cov ntaub ntawv keeb kwm - los daws teeb meem thaum tej yam tsis muaj kev cuam tshuam. Nws tsis yog khawv koob; nws tau tswj chaos, tig mus rau hauv kev qhuab qhia engineering dua. Thiab qhov ntawd yog qee yam koj tsuas yog kawm los ntawm kev nyob hauv qhov tuab ntawm nws, xyoo tom qab xyoo.
