Thaum cov neeg feem coob hnov 'stainless steel poob wax casting', lawv pom qhov tsis muaj qhov tsis zoo, ci ntsa iab ncaj qha tawm ntawm daim ntawv qhia. Qhov ntawd yog thawj qhov kev xav tsis zoo. Qhov tseeb yog deb messier, ntau nuanced, thiab koom nrog ntau npaum li kev daws teeb meem raws li nws ua txheej txheem. Nws tsis yog hais txog kev ua kom zoo nkauj xwb; Nws yog hais txog kev tswj ib puas qhov sib txawv kom tau txais ib qho kev ua haujlwm uas ua tau raws li daim ntawv qhia tshwj xeeb uas muaj cov lej-lub zog tensile, corrosion kuj nyob rau hauv ib puag ncig tshwj xeeb, kev ntsuas siab. Qhov 'stainless' feem yog yuav luag liab herring; qib tseem ceeb tshaj tsev neeg. 304, 316, 17-4PH-txhua tus coj txawv txawv thaum koj nchuav nws ntawm 1500 ° C rau hauv lub plhaub ceramic. Qhov ntawd yog qhov chaw ua haujlwm tiag tiag pib.
Lub Plhaub Game: Nws yog tag nrho hauv Pwm
Wb tham txog lub plhaub. Qhov no tsis yog tsuas yog plaster pwm. Nws yog ntau txheej ceramic armor ua los ntawm dipping ciab qauv rau hauv slurries thiab stuccos. Tus naj npawb ntawm cov tsho tiv no, lub sij hawm ziab ntawm txhua qhov, cov av noo nyob ib puag ncig - tau txais ib qho tsis ncaj ncees lawm thiab lub plhaub tau tawg thaum lub sij hawm dewaxing (ib qho zoo nkauj, ntxhov tsis ua hauj lwm) los yog tsis muaj zog txaus kom muaj cov hlau molten, ua rau peb hu ua 'khiav tawm'. Kuv tau pom ib tsob ntoo wax zoo meej rau lub twj tso kua mis vaj tsev puas lawm vim lub tsho thib peb qhuav sai heev hauv lub lim tiam tsis qhuav. Lub plhaub zoo li zoo, tab sis nws muaj micro-cracks. Thaum lub sij hawm ncuav, nws zoo li ib tug sieve. Tag nrho poob.
Qhov no yog qhov kev paub los ntawm lub khw zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) qhia. Nrog ntau tshaj 30 xyoo nyob rau hauv peev casting, lawv tau ci qhov kev paub txog txheej txheem no rau hauv lawv lub sijhawm. Nws tsis nyob hauv phau ntawv; nws yog nyob rau hauv tus kws kho mob xav tias yuav ua li cas cov slurry drips, zoo li lub plhaub ziab. Lawv lub website, tsi.com, teev plhaub pwm casting ua ib qho tseem ceeb tshwj xeeb rau ib qho laj thawj. Nws yog lub hauv paus kauj ruam. Koj tuaj yeem muaj cov hlau zoo tshaj plaws, tab sis yog tias koj lub plhaub tsis ua haujlwm, koj tsuas yog nchuav hlau kim rau hauv pem teb.
Txoj kev dewaxing nws tus kheej yog qhov tseem ceeb. Ntau tus xav tias koj tsuas yog yaj cov quav ciab tawm. Feem ntau cov khw muag khoom loj siv autoclaves lossis flash dewaxing nrog lub zog siab. Lub thermal shock ntawm lub plhaub yog qhov loj heev. Yog hais tias lub plhaub system tsis zoo tag nrho rau cov kauj ruam no, nws yuav tawg. Peb kawm qhov no thaum ntxov nrog ib tug complex, nyias-walled manifold. Hloov mus rau cov khoom siv refractory sib txawv rau lub tsho loj, cov teeb meem daws tau. Nws yog cov me me, cov khoom siv-qib hloov kho uas cais ib feem siv tau los ntawm cov khoom seem.
Qib Kev ntxhov siab: Xaiv txoj cai Stainless
Kev qhia tshwj xeeb stainless hlau zoo li taug kev mus rau hauv lub khw muag khoom kho vajtse thiab nug txog cov cuab yeej. Nws yog meaningless yam tsis muaj ntsiab lus teb. Rau marine fittings, 316 yog lub neej ntawd rau nws cov molybdenum-txhim kho corrosion kuj. Tab sis kuv tau muaj cov neeg thov hais rau 316 rau sab hauv, daim ntawv thov qhuav qhov twg 304 yuav ua tau zoo txaus thiab pheej yig dua. Koj yuav tsum thawb rov qab, kawm ntawv.
Tom qab ntawd muaj cov nag lossis daus-qib qib zoo li 17-4PH. Zoo heev rau high-zog, complex stainless hlau poob ciab casting qhov chaw zoo li aerospace brackets. Tab sis kev kho cua sov lub voj voog tom qab casting yog unforgiving kiag li. Ob peb degrees tawm ntawm qhov kub thiab txias, thiab koj tsis tau txais qhov xav tau RC hardness. Qhov seem zoo ib yam tab sis yuav ua tsis tiav hauv kev sim. QSY qhov hais txog kev ua haujlwm nrog cov hlau tshwj xeeb xws li cov nickel-based qhia kuv tias lawv tau txais qhov no. Cov ntaub ntawv no txawm ntau temperamental. Cov txheej txheem casting tsuas yog thawj ib nrab ntawm kev taug kev; cov txheej txheem thermal yog qhov thib ob.
Kuv nco qab ib pawg ntawm lub cev valve hauv CF8M (qhov sib npaug ntawm 316). Lawv dhau tag nrho cov kev ntsuam xyuas qhov ntev tab sis ua tsis tiav qhov kev sim pitting corrosion tseem ceeb rau tus neeg siv khoom hauv kev lag luam tshuaj. Qhov teeb meem? Delta ferrite cov ntsiab lus. Cov cua txias hauv lub plhaub tau tawm me ntsis, hloov cov microstructure. Peb yuav tsum tau kho qhov kub thiab txias thiab hloov lub plhaub lub insulating zog-ntxiv ib qho ntxiv ceramic fiber ntau txheej nyob ib ncig ntawm cov seem hnyav-kom qeeb qhov txias. Teeb meem kho, tab sis nws siv metallurgical tsom xam los nrhiav lub hauv paus. Qhov seem ntsia zoo tag nrho rau qhov muag liab qab.
Lub Dimensional Tightrope: As-Cast vs. Machined
Ib qho ntawm cov ntsiab lus muag loj tshaj plaws ntawm cov quav ciab ploj yog ze-net-puab txoj kev. Lo lus tseem ceeb yog 'ze.' Tus neeg twg uas tau cog lus ± 0.1mm kam rau ua rau txhua qhov chaw ntawm qhov ua-cam khwb cia yog ncab qhov tseeb. Koj yuav tsum tswj cov kev cia siab. Shrinkage yog kwv yees tab sis tsis zoo tag nrho uniform. Ib qhov ntev, slender feature yuav shrinks txawv tshaj ib tug loj thaiv ntawm tib casting. Tus qauv tuag account rau qhov no, tab sis ib txwm muaj me ntsis variation.
Tias yog vim li cas cov qauv kev pabcuam puv ntoob ntawm cov tuam txhab uas muab cov casting thiab CNC machining ua kom paub ntau ntxiv. Ntawm QSY, lawv sau ob qho tib si ua cov kev pabcuam tseem ceeb. Koj nrum ib feem kom tau cov geometry complex 90% nyob rau ntawd, nrog cov khoom dav dav ntawm qhov tseem ceeb mating nto, threads, thiab sealing ntsej muag. Tom qab ntawd, koj kho nws ntawm CNC zeb los yog tshuab dhos thiab ntaus cov qhov ntev. Sim ua kom tiav cov kev tolerances ncaj qha los ntawm cov pwm yog ib tug neeg ruam txoj hauj lwm thiab wildly kim nyob rau hauv cov nqe lus ntawm tooling thiab yield poob.
Peb ib zaug sim nrum iav nrog kev ua haujlwm, zoo li-cam khwb cia hniav kom txuag tau tus nqi machining. Tus qauv ua tau zoo, tab sis hauv kev tsim khoom, qhov sib txawv ntawm cov hniav profile thoob plaws ntau qhov chaw yog qhov tsis tsim nyog. Zaj lus qhia? Paub qhov txwv ntawm cov txheej txheem. Cam khwb cia lub iav dawb paug, tshuab cov hniav. Kev sib koom ua ke ntawm ob txheej txheem-peev casting rau complexity, CNC rau precision-yog qhov uas tus nqi tiag tiag yog tsim rau tus engineer.
Tus Nqi Them Nqi Tsav Tsheb: Gating, Yield, thiab Finishing
Quoting ib feem poob ciab tsis yog hais txog qhov hnyav xwb. Ib qho 1kg tiav tuaj yeem pib ua ib tsob ntoo 3kg. Lub rooj vag thiab khiav qhov system, uas tso cov hlau, yog loj heev thiab raug txiav tawm thiab rov ua dua tshiab. Koj qhov kev tawm los (tiav ib feem qhov hnyav piv rau qhov hnyav hlau hnyav) yog tus nqi loj heev. Kev tsim kho qhov rooj zoo, feem ntau simulated nrog software tam sim no, yog qhov tseem ceeb. Lub rooj vag tsim tsis zoo tuaj yeem ua rau muaj kev kub ntxhov, huab cua nkag, thiab shrinkage porosity txoj cai nyob rau hauv qhov tseem ceeb ntawm koj qhov chaw.
Ces muaj tiav lawm. Tom qab shakeout thiab txiav tawm, koj muaj ib feem them nyob rau hauv ceramic plhaub remnants thiab nrog ntxhib rooj vag stubs. Nws yuav tsum tau txhaj tshuaj blasting, sib tsoo, tejzaum nws yog tshuaj ntxuav (pickling thiab passivation rau stainless los kho cov corrosion-resistant oxide txheej). Qhov no yog kev siv zog ntau thiab feem ntau tsis saib xyuas hauv kev npaj thawj zaug. Ib feem nrog ntau cov kab hauv sab hauv yog npau suav phem los ntxuav. Kuv tau siv sij hawm nrog kev kho hniav thiab cov dav hlau dej siab ua kom tshem tawm cov fused ceramic los ntawm cov cua txias. Tam sim no, peb tsim kom huv si txij thaum pib.
Qhov kev ua haujlwm kawg no yog qhov uas muaj ntau yam khoom siv tes ua. Automated sib tsoo neeg hlau yog qhov zoo rau cov qauv duab, tab sis ib qho nyuaj, organic-shaped valve vaj tsev? Uas feem ntau xav tau ib tug txawj grinder nrog ib tug khov kho tes los muab nto yam tsis muaj gouging lub hauv paus hlau. Nws yog ib qho txuj ci.
Thaum Nws Mus Zoo: The Payoff
Txawm tias mob taub hau, thaum koj tuav ib tug zoo meej, complex stainless hlau poob ciab casting ib feem-hais tias, ib-thooj turbine impeller nrog nkhaus hniav uas yuav ua tsis tau rau tshuab los ntawm cov khoom-nws tsim nyog. Kev ncaj ncees ntawm ib feem uas tsis muaj welds los yog pob qij txha, muaj peev xwm siv high-kev ua tau zoo alloys nyob rau hauv cov ntaub ntawv intricate, qhov zoo heev nto tiav uas feem ntau xav tau me ntsis prep rau txheej.
Nws yog ib qho txheej txheem uas xav tau kev hwm rau tag nrho cov saw hlau, los ntawm kev txhaj tshuaj wax mus rau qhov kawg tshuaj ntsuam xyuas. Koj tsis tuaj yeem ua tus kws kos duab lossis tus neeg tsim khoom lossis tus kws kho tshuab. Koj yuav tsum nkag siab tias txhua theem hais lus li cas mus rau tom ntej. Qhov ntawd yog qhov kev xav uas kuv tau txais los ntawm kev ua haujlwm zoo li qhov tau piav qhia ntawm tsi.com. Lawv txoj haujlwm ntev qhia tau hais tias lawv tau taug kev cov kev sib tw sib cuam tshuam hla cov ntaub ntawv los ntawm cov hlau cam khwb cia rau cov nickel alloys. Cov kws tshaj lij tiag tiag tsis tau teev npe raws li kev pabcuam; nws yog qhov kev txiav txim sib sau hu ua ntau txhiab tus pours, txiav txim siab yuav ua li cas tweak cov txheej txheem rau lwm tus.
Yog li tom ntej no lub sij hawm koj ntsuam xyuas ib tug casting, saib yav dhau los qhov ci. Xav txog lub plhaub uas tuav nws, txoj kev thermal uas nws tau coj los ua kom ruaj khov, cov khoom lag luam tawm tswv yim sab laug rau machining, thiab tes ua haujlwm uas ntxuav nws. Qhov ntawd yog qhov tseeb ntawm ib feem. Qhov seem yog kev lag luam xwb.
