Thaum koj hnov 'alloy peev casting', cov duab tam sim no feem ntau ntawm pristine, net-shape aerospace Cheebtsam. Qhov ntawd yog qhov tseeb, tab sis nws tsuas yog daim ntawv qhia glossy version. Qhov kev muaj tiag nyob rau hauv pem teb foundry yog messier, ntau nuanced. Ib qho kev xav tsis zoo yog tias nws yog ib qho kev daws teeb meem rau txhua qhov nyuaj. Qhov tseeb, nws txoj kev muaj peev xwm hinges rau qhov kev ntsuam xyuas nyiaj txiag phem ntawm geometry tiv thaiv ntim. Puas yog nws tsim nyog rau lub plhaub ceramic, cov qauv siv quav ciab, lub sijhawm ua haujlwm ntev? Rau ib qho yooj yim bracket, yuav luag tsis tau. Rau lub impeller nrog cov vanes sab hauv, feem ntau yog tib txoj kev. Cov kos duab tiag tiag tsis yog hauv kev ua yeeb yam nkaus xwb; nws yog nyob rau hauv paub thaum tsis siv peev casting tag nrho.
Tub Ntxhais Dance: Ciab, Plhaub, thiab Hlau
Cov txheej txheem zoo li linear hauv phau ntawv kawm: siv quav ciab qauv, sib dhos, plhaub tsev, dewax, burnout, ncuav. Hauv kev xyaum, txhua kauj ruam yog kev sib tham. Nqa cov quav ciab. Nws formulation tsis yog generic; ib lub wax rau nyias-walled stainless hlau ib feem coj txawv dua li ib tug tuab-section cobalt alloy. Shrinkage tus nqi sib txawv, thiab yog tias koj tus qauv siv quav ciab tsis suav nrog cov hlau txuas ntxiv kom raug, koj tab tom ua kom cov nyiaj tau los tom qab. Kuv tau pom tej yaam num uas thawj zaug siv quav ciab tsis tau theej los ntawm ib txoj hauj lwm 'zoo sib xws', tsuas yog los tawm cov qauv distorted uas cuam tshuam tag nrho lub plhaub kev ncaj ncees. Nws yog lub hauv paus kauj ruam uas tau saib tsis pom.
Tom qab ntawd los ntawm ceramic plhaub. Lub dip-thiab-stucco lub voj voog suav tsis yog arbitrary; Nws yog ib txoj haujlwm ntawm alloy pouring kub thiab ib feem loj. Lub high-nickel alloy poured tshaj 1500 ° C xav tau lub plhaub robust tiv thaiv thermal shock thiab hlau nkag. Ob peb txheej dhau lawm, thiab koj yuav muaj kev pheej hmoo ntawm kev khiav tawm lossis 'finned' casting los ntawm lub plhaub tawg. Ntau dhau lawm, thiab koj ntxiab gases thaum lub sij hawm dewaxing, ua rau lub plhaub npuas uas ua tsis xws luag ntawm qhov kawg casting. Nws yog ib qho txuj ci tactile - txiav txim lub plhaub tuab los ntawm nws qhov hnyav-lub xeev ntsuab thiab lub suab thaum tapping.
Lub sijhawm burnout yog qhov tseem ceeb, tab sis feem ntau kho raws li lub voj voog qhov cub yooj yim. Nws tsis yog hais txog melting ciab tawm; Nws yog hais txog kev hloov lub plhaub mus rau qhov muaj zog, permeable ceramic. Ramp tus nqi tseem ceeb. nrawm dhau, thiab cov wax nthuav dav tuaj yeem tawg lub plhaub. qeeb dhau, thiab koj tso cov pa roj carbon residue uas tuaj yeem ua rau muaj qhov tsis xws luag ntawm qhov casting. Rau cov alloys rhiab rau cov pa roj carbon monoxide, zoo li qee qhov duplex stainless hlau, qhov no yog kev puas tsuaj. Lub qhov cub cua yuav tsum tau saib ib yam nkaus.
Cov khoom siv: Nws tsis yog Stainless Hlau xwb
Cov neeg siv khoom feem ntau qhia cov hlau tsis muaj steel zoo li nws yog ib qho khoom siv. Kev coj tus cwj pwm ntawm 304L piv rau 316L, cia nyob ib leeg los nag lossis daus qib zoo li 17-4PH, yog qhov txawv txav. Fluidity, kub tearing nyiam, pub noj yuav tsum - lawv txhua tus hloov. Qhov no yog qhov uas qhov kev paub ntev ntev tau them tawm. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog rau lawv cov keeb kwm yav dhau los 30 xyoo, yuav tau tsim lub tsev qiv ntawv sib sib zog nqus, cov tswv yim ntawm cov cwj pwm no. Koj tuaj yeem nyeem ib daim ntawv teev cov ntaub ntawv, tab sis paub tias ib qho tshwj xeeb nickel-raws li alloy, hais tias Inconel 718, muaj tus cwj pwm phem ntawm kev tsim cov freckles yog tias qhov ntsuas kub tsis nruj nruj, los ntawm kev siv ob peb pawg los kawm txoj kev nyuaj.
Cov alloys tshwj xeeb, xws li cobalt lossis npib tsib xee-raws li, qhia lwm txheej. Lawv feem ntau xaiv rau kev tiv thaiv corrosion los yog kev ua haujlwm kub, tab sis lawv tuaj yeem yog cov tsiaj nyaum kawg los nrum. Lawv muaj cov ntsiab lus melting siab, uas nyuaj rau lub plhaub system, thiab lawv cov khoom sib txawv tuaj yeem ua kom yuam kev. Kev sib tw thiab nce rau cov khoom siv no tsis yog tus qauv. Koj xav tau cov feeders loj heev los tawm tsam qhov siab shrinkage, uas tom qab ntawd cuam tshuam cov txiaj ntsig. Kev suav nyiaj txiag hloov pauv loj heev. Tus nqi tsis yog nyob rau hauv cov khoom kim heev alloy ingot; nws yog nyob rau hauv cov hlau koj ncuav tsuas yog txiav tawm thiab remelt.
Qhov no yog qhov chaw machining kev sib xyaw ua ke tsis yog sib tham. Ib tug foundry uas tsuas yog cam khwb cia yog tso nyiaj thiab kev tswj kom zoo ntawm lub rooj. Casting yog txheej txheem ze-net-zoo, tab sis 'ze' yog lo lus ua haujlwm. Tseem ceeb datum ntsej muag, threaded qhov, nruj-tolerance diameters yuav tsum tau machining. Muaj peev xwm CNC hauv tsev, raws li QSY ua, txhais tau hais tias ib feem tuaj yeem tsim nrog tag nrho cov txheej txheem hauv siab. Koj tuaj yeem tawm tswv yim tawm tswv yim hauv qee thaj chaw paub tias koj yuav tshuab nws meej tom qab, uas yog qhov ua tau zoo dua li kev sim ua rau lub micron-theem kam rau txhua qhov chaw, uas yog lub cev tsis tuaj yeem.
Tiag tiag-lub ntiaj teb Pitfalls thiab kev sib haum xeeb
Cov txheej txheem hauv phau ntawv muaj cov xwm txheej zoo. Kev muaj tiag tsis yog. Kev mob taub hau rov tshwm sim yog qhov hloov pauv tseem ceeb. Txawm tias muaj lub plhaub ua tau zoo, thaum lub sij hawm nchuav, lub zog buoyant ntawm cov hlau molten tuaj yeem nqa lossis hloov cov cores hauv ceramic. Kuv tau ua haujlwm ntawm lub tsev nyob qhov twg lub hauv paus nkag tau hloov los ntawm ib qho mere 1.5mm, ua rau tag nrho cov khoom siv tsis muaj txiaj ntsig. Qhov kho tsis nyob rau hauv lub pouring; nws yog nyob rau hauv redesigning lub core prints thiab txhawb nyob rau hauv lub wax qauv theem. Nws tau ntxiv ob lub lis piam mus rau lub sij hawm prototyping.
Deg tiav kev cia siab kuj xav tau kev tswj hwm. Kev nqis peev casting muab qhov ua tiav zoo, tab sis 'raws li-cam khwb cia' tsis zoo ib yam li 'machined'. Rau qhov chaw uas muaj cov kua dej ntws, xws li cov twj tso kua mis, qee qhov roughness ntawm qhov chaw yuav ua tau. Rau kev cog hniav kho mob, nws tsis yog. Feem ntau, koj nyob nraum ntsuas tus nqi ntawm kev ua tiav qhov zoo tshaj plaws li-cam khwb cia tag (los ntawm cov ntaub ntawv zoo nkauj ceramic stucco, ntau lub tsho tiv no) tiv thaiv tsuas yog qhia lub teeb machining lossis blasting ua haujlwm tom qab nrum. Cov tom kawg yog feem ntau txhim khu kev qha thiab raug nqi.
Lub sij hawm ua ntej yog lwm tus neeg tua neeg uas ntsiag to. Cov neeg pom lub ncuav nrawm thiab xav tias nws ceev. Lawv tsis nco qab 2-3 lub lis piam rau cov qauv cuab yeej, lub lim tiam rau lub plhaub tsev thiab ziab, hnub rau burnout. Nws yog txheej txheem ntsuas hauv lub lis piam, tsis yog hnub. Txhua qhov kev thov nrawm feem ntau txhais tau hais tias cuam tshuam rau lub plhaub ziab lub sijhawm, uas yog daim pib ncaj qha rau plhaub pwm tsis ua haujlwm. Tsis muaj lub npe nrov foundry yuav tsum pom zoo rau nws.
Qhov zoo ntawm kev sib koom ua ke: Los ntawm Casting mus rau qhov kawg
Qhov no yog qhov uas tus qauv ntawm kev sib koom ua ke thiab lub khw muag khoom, zoo li qhov cuam tshuam los ntawm QSY cov kev pabcuam, qhia nws tus nqi tiag. Thaum casting thiab machining nyob rau hauv ib lub ru tsev, lub tswv yim voj yog nruj. Tus kws kho tshuab pom ib qho chaw nyuaj los yog ib qho av porosity nyob rau hauv ib cheeb tsam ntawm cov casting. Cov ntaub ntawv no ncaj qha rov qab mus rau tus engineer foundry. Puas yog qhov teeb meem cua txias hauv zos? Ib qho riser tsis txaus? Lawv tuaj yeem kho lub rooj vag tsim rau kev khiav haujlwm tom ntej. Qhov kev daws teeb meem kaw no tsis tuaj yeem ua tsis tau thaum lub casting raug xa tawm mus rau lub khw muag khoom thib peb uas tsuas yog sau ntawv tsis txaus siab ntawm daim ntawv tshaj tawm zoo.
Xav txog ib qho stainless hlau manifold. Cam khwb cia, nws muaj flange ntsej muag thiab ntsia liaj qhov rooj qhov. Nyob rau hauv ib qho kev teeb tsa, CNC qhov kev pab cuam tuaj yeem tsim nrog lub casting shrinkage yam twb ci nyob rau hauv. Ib feem yog fixtured siv raws li-cam khwb cia siv cov ntsiab lus tsim thaum lub sij hawm siv quav ciab qauv tsim. Qhov kev sib koom ua ke no txo qis lub sijhawm teeb tsa thiab ua kom lub hnab ntawv machining hwm lub casting qhov tseeb qhov ntev, tsis yog nws cov qauv CAD theoretical. Nws txo cov khoom seem thiab ua kom xa khoom sai.
Cov ntaub ntawv kev paub txuas ntxiv ntawm no thiab. Machining ib tug cam khwb cia cobalt alloy yog txawv los ntawm machining ib tug wrought bar ntawm tib specification. Lub microstructure, hardness, thiab muaj peev xwm rau abrasive inclusions txawv. Ib pab neeg sib koom ua ke paub xaiv cov cuab yeej zoo, nrawm, thiab pub los ntawm kev paub dhau los, zam cov cuab yeej tawg thiab qhov tsis zoo ntawm qhov kawg ntawm qhov kawg, cov khoom tseem ceeb.
Xaus Kev Xav: Pragmatic Craft
Yog li, dab tsi yog qhov takeaway? Alloy peev casting yog ib qho muaj zog, qee zaum tsis tseem ceeb, kev tsim khoom. Tab sis nws txoj kev vam meej yog faus rau hauv cov ntsiab lus uas tsis yog nyob rau hauv kev muag khoom: hauv cov khoom siv quav ciab, lub plhaub chav tsev av noo, qhov kub hnyiab, thiab kev paub zoo txog yuav ua li cas cov hlau tshwj xeeb ntim thiab ntsws. Nws tsis yog khawv koob; nws yog ib tug series ntawm tswj, ntxhov, lub cev tsis sib haum xeeb.
Qhov sib txawv, txoj cai, yog mus rau vertically integrated muab kev pab. Nws tsuas ua rau kev nkag siab xwb. Cov kev sib tw ntawm kev tsim ib qho kev ncaj ncees casting yog li intertwined nrog cov kauj ruam uas tuaj ua ntej thiab tom qab nws tias kev sib cais qhia txog kev pheej hmoo thiab nqi. Thaum koj saib ntawm tus neeg muag khoom lub peev xwm, lawv cov npe ntawm cov khoom xws li cam khwb cia hlau, hlau, stainless, thiab cov alloys tshwj xeeb yog pib. Tab sis cov lus nug tiag tiag yog: pes tsawg zaus lawv tau nchuav cov no, ua cov no, thiab daws cov teeb meem uas tsuas yog tshwm sim thaum koj sim ua ob qho tib si los ua ib feem ua haujlwm? Qhov ntawd yog qhov kev paub uas tseem ceeb.
Thaum kawg, nws yog pragmatic khoom siv tes ua. Koj tsis yog yuav ib qho casting xwb; koj tab tom yuav cov khoom sib sau, feem ntau nyuaj-yeej, kev txiav txim siab ntawm pab pawg uas paub yuav ua li cas taug kev tag nrho ntawm tus qauv 3D mus rau qhov ua tiav, txhim khu kev qha hauv koj txhais tes. Qhov kev txiav txim ntawd yog qhov khoom tiag.
