Thaum ib tug neeg hais tias 'siab zoo peev casting', feem ntau lub siab dhia ncaj nraim rau cov lej kam rau ua thiab qhov chaw tiav specs. Qhov ntawd yog ib feem ntawm nws, paub meej, tab sis yog tias koj tau siv lub sijhawm tiag tiag rau hauv pem teb foundry, koj paub tias qhov kev sib tham pib, tsis xaus. Qhov zoo tiag tiag yog nyob rau hauv cov txheej txheem kev txiav txim siab uas koj txiav txim siab ntev ua ntej cov hlau hits pwm, kev txiav txim siab uas tsis tas yuav raug ntes nyob rau hauv cov lus zoo PDF. Nws yog lub rooj vag tsim koj tweak raws li lub hli tas los cov seem, lub plhaub ziab lub sij hawm koj kho rau cov av noo nyob rau lub lim tiam ntawd, los yog paub tias qib stainless hlau twg ua tau zoo nyob rau hauv qhov txias txias rau qhov nyias-walled tivthaiv. Ntau tus neeg yuav khoom, thiab ua siab ncaj rau qee tus engineers tshiab, kho nws zoo li kev pabcuam khoom muag - xa tus qauv 3D, tau txais ib feem. Qhov sib txawv ntawm qhov ntawd thiab qhov zoo tiag tiag yog qhov twg txhua yam nthuav dav, thiab ntxhov siab, tshwm sim.
Lub Hauv Paus: Nws Pib Ua Ntej Ciab
Koj tsis tuaj yeem tham zoo yam tsis tau tham txog tus qauv. Kuv twb pom tej yaam num ua tsis tau vim cov kauj ruam no tau rushed. Ib tug zoo meej CAD qauv tsis cia li txhais mus rau ib tug zoo meej wax qauv. Cov kev txhaj tshuaj tsis-kub, siab, lub sij hawm voj voog-lawv yuav tsum tau hu rau hauv qhov tshwj xeeb siv quav ciab thiab cov geometry ntawm ib feem. Ib tug complex turbine hniav nrog nyias airfoils thiab ib tug tuab hauv paus seem? Tej zaum koj yuav xav tau cov rooj vag txhaj tshuaj sib txawv thiab kev teeb tsa cua txias rau ntau qhov chaw ntawm tib qhov tuag. Yog tias tus qauv siv quav ciab muaj kev ntxhov siab sab hauv lossis kev cuam tshuam me ntsis, cov no tau ci rau hauv txhua kauj ruam tom ntej. Kuv nco qab txog ib txoj hauj lwm rau lub twj tso kua mis impeller qhov twg peb khaws cia me ntsis warpage nyob rau hauv qhov kawg casting. Peb tau caum peb cov tails ntawm lub voj voog hluav taws xob rau hnub ua ntej rov qab mus thiab paub tseeb tias qhov kev txhaj tshuaj siv quav ciab tsuas yog 5 degrees C siab dhau lawm, ua rau tsis sib xws. Qhov ntawd yog hom cag-ua rau khawb uas txhais tau zoo.
Qhov no yog qhov kev paub nrog cov ntaub ntawv tsis muaj kev sib tham. Ntawm qhov chaw zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog rau lawv cov keeb kwm yav dhau los 30 xyoo, cov qauv kev paub hauv khw yog lub koom haum. Lawv tsis yog nias ciab xwb; lawv nyob nraum cia siab tias yuav ua li cas lub ciab rau ib Nickel-raws li alloy turbine ib feem yuav coj txawv ntawm cov quav ciab rau tus qauv 316 stainless tivthaiv thaum dewaxing. Lub foresight ntawd yog ib qho uas ntsiag to tab sis tseem ceeb ntawm zoo peev casting.
Thiab kev sib sau ua ke, lossis tsob ntoo, yog daim duab kos duab. Yuav ua li cas koj taw qhia cov qauv ntawm lub hauv paus sprue ncaj qha cuam tshuam rau kev ua kom muaj zog thiab ruaj khov. Koj xav kom txo qis turbulence thiab xyuas kom meej cov kev taw qhia solidification rau lub feeder. Nws zoo nkaus li yooj yim-tsuas yog vuam wax sticks-tab sis lub kaum sab xis thiab qhov chaw yog txhob txwm tshaj tawm. Ib tsob ntoo tsim tsis zoo yog ib daim ntawv qhia rau cov hnab ntim shrinkage cais, txawm tias koj lub plhaub zoo npaum li cas.
Lub Plhaub: Qhov Kev Sib Raug Zoo yog Vaj Ntxwv
Ceramic plhaub yog cov ntaub ntawv pwm, thiab nws txoj kev ncaj ncees yog txhua yam. Cov txheej txheem ntau txheej dip-coat zoo li yooj yim: prime slurry, stucco, qhuav, rov ua dua. Tab sis dab ntxwg nyoog yog nyob rau hauv ib txhiab lus. Lub viscosity ntawm slurry xav tau kev saib xyuas tas li thiab kev hloov kho - nws hloov nrog kub thiab raws li cov khoom evaporates. Lub stucco sand grain loj faib rau txhua lub tsho tiv no (feem ntau zoo dua rau lub ntsej muag lub tsho, coarser rau lub tsho tiv no) yuav tsum tau tswj kom muaj zog thaum tso pa roj permeability.
Kev ziab ib puag ncig yog qhov sib txawv loj uas feem ntau underestimated. Kuv tau ua haujlwm nyob rau hauv cov chaw uas cov av noo nyob rau lub caij ntuj no yuav ua rau lub plhaub ziab kom qhuav, ua rau tawg lossis tsis muaj zog ntsuab. Lub chav ua kom qhuav tiag tiag, nrog rau qhov kub thiab txias thiab dehumidification, tsis yog khoom kim heev; nws yog lub hauv paus rau zoo peev casting. Yog tsis muaj nws, koj nyob nraum twv txiaj. Lub plhaub yuav tsum muaj zog txaus kom muaj sia nyob dewaxing thiab tuav, tab sis ntxeem tau txaus kom cia cua khiav thaum lub sij hawm nchuav. Tau txais txoj cai sib npaug yog qhov kev xyaum, kev txawj ntse-cov kws tshaj lij paub los ntawm lub suab thiab hnov ntawm lub plhaub thaum nws npaj txhij.
Dewaxing nws tus kheej yog qhov tseem ceeb ntawm kev poob siab. Feem ntau siv chav autoclaves tam sim no. Cov cua kub ceev melts cov quav ciab tawm, tab sis yog tias ua dhau heev lawm, nws tuaj yeem tawg lub plhaub los ntawm thermal stress. Lub siab thiab lub voj voog lub sij hawm profiles yog tsim nyob rau ntau xyoo. Ib qho tawg ntawm no tej zaum yuav yog microscopic, tab sis nws yuav tshwm sim raws li lub fins lossis flash ntawm qhov kawg casting, yuav tsum tau ua kom tiav ntxiv lossis ua rau tsis lees paub.
Melting & Pouring: Lub ntsiab lus tsis rov qab los
Nov yog qhov uas txhua qhov kev npaj ua haujlwm tau raug sim. Rau kev ua tau zoo alloys zoo li cov cobalt-based alloys los yog super duplex stainless hlau uas QSY teev, yaj xyaum yog qhov tseem ceeb. Nws tsis yog hais txog kev ncav cuag cov kua dej kub. Nws yog hais txog tuav lub sij hawm, slag tswj, thiab zoo degassing kom txo porosity. Koj xav tau qhov cua sov zoo (feem ntau argon lossis lub tshuab nqus tsev rau reactive alloys) los tiv thaiv oxidation thiab suav nrog tsim.
Lub ncuav yog luv luv, txiav txim siab lub sijhawm. Cov hlau yuav tsum nyob ntawm qhov tseeb superheat-kub txaus los sau tag nrho cov pwm, tshwj xeeb tshaj yog cov seem nyias, tab sis tsis kub heev uas nws ua rau cov hlau-plhaub cov tshuaj tiv thaiv ntau dhau los yog cov qoob loo loj hlob. Lub ncuav yuav tsum du thiab tsis tu ncua kom tsis txhob muaj turbulence uas ntxiab huab cua. Kuv nco txog ib rooj plaub uas muaj ib tug complex manifold qhov twg peb muaj persistent porosity nyob rau hauv ib tug tshwj xeeb junction. Peb sim kho lub rooj vag, lub plhaub, txhua yam. Thaum kawg, peb txo qis tus nqi nchuav li ntawm 20%. Nws muab tawm lub ncuav nrawm dua yog tsim lub vortex hauv qhov kab noj hniav, nqus hauv huab cua. Ib qho qeeb qeeb, tsis tu ncua daws nws. Qee zaum qhov kho tsis yog high-tech; nws tsuas yog kev soj ntsuam thiab ua siab ntev.
Solidification yog txoj cai kawg ntawm cov txheej txheem casting. Cov pwm tsim (cov rooj vag thiab cov khoom noj uas peb ua tau teev lossis hnub ua ntej) tam sim no yuav tsum ua haujlwm. Cov hlau yuav tsum solidify directionally, los ntawm qhov deb tshaj plaws rov qab mus rau lub feeder, uas ua raws li ib tug reservoir ntawm cov kua hlau los pub shrinkage. Yog tias qhov no tsis tshwm sim, koj tau txais shrinkage porosity hauv phab ntsa casting. Khoos phis tawj simulation pab tam sim no, tab sis tsis muaj qhov hloov pauv rau kev txiav cov ntawv thawj zaug los txheeb xyuas cov qauv solidification. Nws yog qhov kev sim ua kom puas tsuaj, tab sis nws yog tib txoj hauv kev kom paub tseeb tias koj cov txheej txheem yog suab.
Kev Ua tiav & Kev lees paub: Txoj haujlwm tsis pom
Thaum koj co tawm lub casting, qhov tiag mettle ntawm ib tug foundry qhia. A zoo peev casting yuav tsum tau ua kom tsawg kawg nkaus. Tab sis tsawg kawg yog qhov tseem ceeb. Lub rooj vag thiab feeder kev sib txuas yuav tsum raug txiav tawm, feem ntau nrog lub siab ceev pom lossis lub log abrasive. Tom qab ntawd muaj kev sib tsoo, sib tov, thiab tua blasting. Cov txuj ci ntawm no yog tshem tawm cov khoom siv ntau dhau yam tsis muaj kev puas tsuaj rau ib feem lossis tawm hauv kev ntxhov siab. Rau qhov tseem ceeb aerospace bracket, kev sib tsoo hnyav tuaj yeem tsim qhov chaw pib micro-crack.
Qhov no yog qhov kev koom ua ke nrog CNC machining dhau los ua qhov txiaj ntsig loj, qee yam QSY kev sib xyaw ua ke thiab kev teeb tsa machining tseem ceeb. Muaj machining hauv tsev txhais tau tias pab neeg ua tiav nkag siab txog qhov chaw twg yog qhov tseem ceeb rau kev ua haujlwm tom qab. Lawv tuaj yeem tso cov khoom lag luam ntxiv (zoo siab ntev) hauv cov cheeb tsam tshwj xeeb thaum ntxuav cov chaw tsis tseem ceeb kom zoo nkauj. Nws yog ib txoj hauv kev sib koom ua ke uas tiv thaiv kev sib tsoo ntawm qhov chaw uas tus kws kho tshuab yuav tsum tau txiav tom qab.
Validation yog txheej. Dimensional checks nrog CMMs rau cov yam ntxwv tseem ceeb, dye penetrant kuaj rau saum npoo tsis xws luag, X-ray lossis UT rau kev ncaj ncees sab hauv. Rau qhov siab ncaj ncees, koj feem ntau ua tag nrho cov saum toj no. Cov ntaub ntawv taug kev - daim ntawv qhia yaj, cov ntaub ntawv tshuaj xyuas - yog ib feem ntawm qhov zoo li lub cev. Nws yog pov thawj ntawm kev tswj. Lub chaw tsim khoom uas tsis tuaj yeem muab cov ntaub ntawv sib koom ua ke tej zaum yuav tsis muaj txheej txheem sib koom ua ke.
Kev ntsuas tiag tiag: daws teeb meem, tsis yog ua ib feem
Yog li, dab tsi cais qhov kev nqis peev zoo los ntawm tus neeg muag khoom zoo? Nws tsis yog daim ntawv qhia. Nws yog li cas lawv teb thaum ib yam dab tsi mus off-script. Ib tug tshiab alloy coj unpredictably. Ib qho kev tsim muaj qhov kub qhov chaw. Qhov zoo ntawm ib tug foundry yog qhia nyob rau hauv lawv cov teeb meem daws teeb meem. Puas yog lawv tsuas cem cov quav quav tshuaj lossis cov khoom siv hlau? Los yog lawv puas muaj qhov tob hauv engineering los khiav DOE me me, kho cov ntoo layout, hloov cov qauv slurry, thiab rov qab rau koj nrog kev daws teeb meem thiab cov ntaub ntawv?
Qhov ntawd yog tus nqi ntawm tus khub nrog kev ua haujlwm tob hauv keeb kwm. Thaum twg Qingdao Qiangsenyuan Technology Co., Ltd. tham txog peb caug xyoo hauv plhaub molding thiab peev casting, lub sij hawm ntawd sawv cev rau lub tsev qiv ntawv ntawm kev daws teeb meem. Tej zaum lawv yuav pom ib qho version ntawm koj qhov kev sib tw ua ntej. Lub koom haum nco ntawd tiv thaiv kev rov kawm dua thiab ua yuam kev ntawm koj lub dime.
Thaum kawg, zoo peev casting yog ib txoj saw ntawm ib puas me me, zoo-saib cov kauj ruam. Nws yog khoom siv tes ua txhawb los ntawm kev tshawb fawb. Nws yog hais txog kev tswj hwm qhov sib txawv uas koj tuaj yeem tswj tau (xws li slurry viscosity thiab ncuav kub) thiab nkag siab yuav ua li cas tswj cov uas koj tsis tuaj yeem tshem tawm tag nrho (xws li ambient humidity). Lub hom phiaj tsis yog qhov zoo tshaj plaws - uas yog tsis yooj yim sua hauv cov txheej txheem nrog ntau cov thermal thiab cov khoom sib txawv - tab sis nws yog hais txog qhov tsis sib xws thiab kev cuam tshuam ntse. Qhov kawg uas ua tau raws li spec, tshuab zoo, thiab ua tau zoo hauv daim teb? Qhov no tsuas yog cov zis. Qhov zoo yog tsim nyob rau hauv cov sij hawm, hnub, thiab xyoo ua ntej nws puas tau tawm hauv lub foundry.
