Thaum koj hnov 'aero peev casting', cov duab tam sim no feem ntau ntawm flawless, high-tech turbine hniav rau dav hlau cav. Qhov ntawd tsis yog qhov yuam kev, tab sis nws yog qhov txaus ntshai qhov pom kev nqaim. Hauv kev xyaum, nws yog ntau npaum li kev tswj hwm qhov tseeb ntawm cov qauv siv quav ciab, ceramic slurry viscosity, thiab thermal expansion mismatches raws li nws yog hais txog aerospace glory. Ib qho kev lag luam pitfall yog dhau-kev cog lus rau kev ua siab ntev rau nyias-walled structural brackets tsuas yog vim nws yog aerospace casting - cov txheej txheem tsis yog khawv koob. Nws yog cov saw hlau ntawm cov kauj ruam uas tswj tau zoo, thiab qhov tsis muaj zog txuas nyob txhua qhov chaw, los ntawm qhov pib pwm tsim mus rau qhov kawg kev kho cua sov, yuav ua rau ib feem sai dua li koj tuaj yeem hais tias NDT tsis ua haujlwm.
Core Illusion: Precision tsis yog muab
Ntau qhov kev yuav khoom los ntawm cov kws tsim qauv tsim kho kev nqis peev casting raws li qhov ze-net-zoo li cov mos txwv nyiaj. Lawv yuav tsim cov vaj tsev nyob nrog cov kev sib txuas sab hauv, qhia txog ± 0.005 as-cam khwb cia siab nyob thoob plaws 15-nti dimension, thiab cia siab tias nws ncaj nraim tawm ntawm lub plhaub. Qhov ntawd yog ib daim ntawv qhia rau kev poob siab thiab tus nqi overruns. Qhov tseeb yog, lub aero peev casting txheej txheem inherently qhia cov variables. Lub sijhawm txhaj tshuaj ciab ib leeg - qhov kub thiab txias, siab, lub sijhawm nyob - tuaj yeem ua rau muaj qhov txawv txav uas tsuas yog tshwm sim tom qab lub plhaub ceramic. Kuv tau pom ib pawg ntawm cov actuator vaj tsev nyob qhov twg lub flange flatness tau tawm tsuas yog vim hais tias chav tsev ciab ambient kub fluctuated ntau tshaj 5 ° C lub lim tiam. Lub precision yog khwv tau, tsis xav.
Qhov no yog qhov uas kev koom tes nrog cov foundry ua qhov tseem ceeb. Nws tsis yog tsuas yog xa CAD qauv thiab tos. Ib lub khw zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog rau lawv peb lub xyoo caum ntawm lub plhaub thiab peev casting, yuav tam sim ntawd saib ntawm qhov kev taw qhia ntawm tsob ntoo, lub rooj vag tsim, thiab tej zaum kub kub. Lawv cov kev paub nrog cov hlau thiab npib tsib xee-raws li alloys txhais tau hais tias lawv tab tom xav txog kev ua kom muaj zog shrinkage qauv los ntawm kev mus. Ib tug zoo foundry tsis cia li quote; lawv ua qhov kev tshuaj xyuas kev tsim khoom uas feem ntau suav nrog kev tawm tswv yim hloov pauv hloov pauv lossis xav kom hloov pauv ntawm 17-4PH stainless mus rau qib sib txawv ntawm stainless hlau uas coj zoo dua thaum lub sij hawm peev casting txheej txheem rau qhov tshwj xeeb geometry.
Kev nqis peev hauv lub npe tsis yog hais txog lub plhaub ceramic raug txi. Nws yog ib qho kev nqis peev hauv iteration pre-production. Rau ib txoj haujlwm tsis ntev los no uas suav nrog cov khoom siv cobalt-raws li cov pa roj carbon monoxide, peb tau mus txog plaub qhov kev sib cais thawj zaug. Thawj ob yog hais txog kev hu xovtooj rau hauv kev noj zaub mov kom tshem tawm cov microporosity hauv ntu ntu tseem ceeb. Qhov thib peb yog rau kev txheeb xyuas qhov ntev tom qab peb kho cov quav ciab tuag. Tsuas yog plaub yog rau kev kuaj cov cuab yeej cuab tam. Txhua lub voj voog raug nqi sijhawm thiab nyiaj txiag, tab sis hla nws yuav tau lav qhov tsis ua tiav hauv kev tsim nyog.
Kev xaiv cov khoom: Nws tsis yog hais txog lub zog xwb
Aerospace cov ntaub ntawv specs yog tsav los ntawm cov ntaub ntawv nplooj ntawv: qhov kawg tensile zog, creep kuj, qaug zog lub neej. Tab sis nyob rau hauv lub foundry, koj nyob nraum soj ntsuam nrog cov khoom ntawm casting yam ntxwv. Ib qho kev ua haujlwm siab nickel-raws li superalloy tej zaum yuav muaj cov khoom kub zoo heev, tab sis yog tias nws yog npau suav phem rau lub plhaub cov tshuaj tiv thaiv los yog ua rau kub kua muag, cov txiaj ntsig tau poob qis. Koj xaus nrog cov khoom siv theoretically zoo meej thiab tus nqi tsis ruaj khov rau ib feem.
Qhov no yog qhov tshwj xeeb alloy tshwj xeeb ntawm lub hauv paus pom. Tshawb nrhiav lawv cov ntaub ntawv ntawm https://www.tsingtaocnc.com, koj pom QSY npe cobalt thiab npib tsib xee alloys nrog rau cov qauv hlau. Cov keeb kwm kev ua haujlwm ntawd txhais tau hais tias lawv yuav tau tsim cov khoom noj khoom haus ntawm lub plhaub los yog cov txheej txheem ua ntej cua sov los tuav cov hlau nplaum ntau dua. Piv txwv li, nchuav qee cov nickel alloys yuav tsum tau ua kom huv si huv si thiab feem ntau yog lub ntsej muag lub ntsej muag tshwj xeeb los tiv thaiv alpha-cov ntaub ntawv tsim, txheej txheej txheej txheej. Lub foundry tsis muaj qhov kev paub tshwj xeeb tuaj yeem nco nws mus txog rau theem machining, thaum cov cuab yeej pib chipping ntawm hardened nto.
Kuv nco qab txog ib rooj plaub uas peb tau hloov los ntawm ib qho 300-series stainless mus rau qib nag lossis daus-hardening rau ib lub teeb yuag. Lub zog-rau-qhov hnyav tau pom meej. Txawm li cas los xij, PH alloy muaj qhov nqaim me me rau qhov kub thiab txias. Kub dhau lawm, thiab cov nplej loj hlob tsis muaj zog rau qhov; txias heev, thiab huab cua khiav los ua ib qho kev pheej hmoo. Pab pawg foundry yuav tsum rov ntsuas lawv cov thermal profile rau qhov tshwj xeeb alloy ntawm qhov tshwj xeeb geometry. Nws tsis yog hais txog melting hlau; nws yog hais txog kev tswj nws tag nrho cov keeb kwm thermal.
Kev sib tsoo ntawm Machining: Casting tsis yog txoj kab tiav
Tsis muaj aero peev casting yog tiag tiag kom txog rau thaum nws yog machined. Qhov kev sib tshuam ntawm cov casting thiab CNC departments yog ib qho kev sib txhuam loj. Ib qho zoo kawg nkaus hauv-spec casting tuaj yeem raug puas tsuaj los ntawm kev txhim kho tsis zoo los yog qhov tsis raug ua ntej txiav. Qhov zoo tshaj plaws scenario yog ib tug vertically integrated muab kev pab. Thaum kawg thiab CNC machining nyob rau hauv ib lub ru tsev, zoo li ntawm QSY, lub voj kev tawm tswv yim nruj. Pab pawg machining tuaj yeem qhia ncaj qha rau lub chaw tsim khoom, Peb tab tom pom cov chaw nyuaj sib xws hauv lub ces kaum ntawm txhua qhov casting, thiab cov foundry tuaj yeem tshawb xyuas seb nws puas yog qhov teeb meem cua txias hauv zos lossis teeb meem suav nrog.
Peb kawm qhov no nyuaj heev xyoo dhau los. Peb tau muab cov castings los ntawm Foundry A thiab xa mus rau Machine Shop B. A batch ntawm titanium castings rau ib tug structural txuas tsis ua hauj lwm thaum lub sij hawm tiav milling ntawm ib tug precision bore. Endless liam-shifting ensued. Tus kws kho tshuab hais tias cov castings tsis sib haum; lub foundry tau hais tias tus kws kho tshuab siv tsis ncaj ncees lawm ceev / pub. Nws siv sijhawm ntau lub limtiam ntawm cov rooj sib tham thiab kev sojntsuam thib peb los nrhiav qhov laj thawj: qhov kev hloov pauv me ntsis ntawm qhov cua txias thaum lub plhaub tshem tawm, uas tau hloov pauv qhov microstructure saum npoo kom txaus los ua cov cuab yeej sib tham. Yog tias nws yog ib qho chaw, lawv yuav tau taug qab cov txheej txheem hauv ib hnub.
Cov qauv datum yog lwm qhov tseem ceeb tshaj tawm. Lub casting yuav tsum muab txhim khu kev qha, machinable datum nta. Qee lub sij hawm, koj yuav tsum ntxiv cov pawm me me rau lub ntsej muag tsis tseem ceeb tsuas yog muab lub CNC qhov chaw ruaj ntseg, huv si rau clamp thiab xoom los ntawm. Qhov no yog kev sib koom tes tsim kev txiav txim siab ua nyob rau hauv cov theem pib, tsis yog tom qab.
Ua tsis tiav raws li Kev Ua Haujlwm Ua Haujlwm
Koj tsis tau to taub tiag tiag peev casting mus txog thaum koj tau muaj qhov zoo kawg nkaus, kim tsis ua haujlwm. Ib qho uas txuas nrog kuv yog ib txheej loj, nyias-walled ducts hauv 316L stainless. Lawv dhau qhov loj me thiab zas-penetrant tshuaj xyuas zoo nkauj. Tab sis thaum lub sij hawm niaj hnub ntsuas siab nyob rau hauv lub rooj sib txoos, ib tug tawg nrog lub suab zoo li rab phom. Kev soj ntsuam pob txha pom tau tias nws tsis yog qhov teeb meem porosity lossis suav nrog. Nws yog residual kev ntxhov siab kaw los ntawm qhov tsis sib xws ntawm qhov cua txias hauv pawg. Ib feem yog technically luam tawm tab sis hauv paus flawed.
Txoj kev daws tsis yog ncuav kom zoo zoo. Nws yog los tsim kho tag nrho cov txheej txheem pawg los txhawb kev sib txawv ntawm cov cua sov ntau dua, thiab ua kom paub txog kev tswj kev ntxhov siab-txhim kho lub voj voog ua ntej txhua lub tshuab. Qhov ntawd ntxiv tus nqi thiab sijhawm, tab sis nws yog tib txoj kev. Qhov no yog qhov tsis txaus ntseeg ntawm cov txheej txheem: qee zaum, kev kho yog counter-intuitive thiab nyob rau hauv lub thermal tswj ntawm lub plhaub tom qab nws tawm hauv lub cub tawg, tsis nyob rau hauv lub cub tawg nws tus kheej.
Cov kev paub no ua rau muaj kev txo hwj chim hauv txoj hauv kev. Koj tsis txhob saib tus qauv CAD raws li cov khoom tiav thiab pib pom nws raws li daim ntawv qhia txog kev ua kom sov thiab tshuab ua las voos ntawm wax, ceramic, molten hlau, thiab cua. Txhua qhov kev txiav txim tsim qauv muaj cov txheej txheem tsim nyog.
Kev ntsuas tiag tiag: Kev sib raug zoo dhau sijhawm
Leej twg tuaj yeem tau txais hmoo thiab tsim ob peb qhov zoo castings. Qhov kev sim tiag tiag ntawm lub tuam txhab muaj peev xwm, zoo li kev ua haujlwm ntev ntawm Qingdao Qiangsenyuan Technology Co., Ltd., yog kev tsim khoom sib xws nyob rau lub hlis thiab xyoo, hla ntau cov khoom siv thiab cov khoom siv cua sov. Lawv puas tuaj yeem tswj xyuas qhov ua tiav zoo ntawm ntu 5000 zoo ib yam rau ntu 50? Does the mechanical property report from a lot cast this month fall within the same tight scatter band as one from two years ago?
Qhov kev sib raug zoo no tshwm sim los ntawm cov txheej txheem tswj hwm, cov ntaub ntawv sau tseg thiab kev nco txog lub koom haum sib sib zog nqus. Nws yog tus qub tub rog lub tshuab hluav taws xob uas tuaj yeem hnov qhov hloov maj mam hloov ntawm lub suab ntawm lub tshuab nqus tsev twj thiab paub xyuas lub foob. Nws yog tus thawj tswj hwm zoo uas muaj histogram ntawm cov ntaub ntawv qhov ntev rau ib feem tseem ceeb rov qab mus rau kaum xyoo. Thaum koj tab tom nrhiav cov khoom siv dav hlau tseem ceeb, cov ntaub ntawv keeb kwm no thiab kev ruaj ntseg pov thawj muaj txiaj ntsig ntau dua li tus nqi zoo dua los ntawm lub khw tsis muaj pov thawj.
Thaum kawg, ua tiav aero peev casting yog kev sib koom tes tsim los ntawm kev sib txuas lus pob tshab ntawm ob lub peev xwm thiab kev txwv. Nws yog hais txog aligning tus tsim cov kev xav tau kev ua tau zoo nrog lub foundry txoj kev muaj tiag. Lub hom phiaj tsis yog los ua ib feem uas zoo li cov duab kos, tab sis los tsim cov khoom siv nrog kev ncaj ncees sab hauv, lub xeev kev ntxhov siab, thiab cov khoom siv los ua kom muaj kev ntseeg siab hauv qhov hnyav, tsis muaj kev zam txim ntawm kev pabcuam aerospace. Nws yog qhov xav tau kev qhuab qhia, qhov twg cov npoo ntawm qhov yuam kev yog nyias raws li cov phab ntsa ntawm cov casting nws tus kheej.
