Thaum cov neeg feem coob hnov 'steel peev casting', lawv pom ib qho flawless, net-puab tivthaiv popping tawm ntawm pwm, npaj mus. Qhov ntawd yog daim ntawv qhia version. Qhov tseeb, qhov koj kawm tom qab ob peb xyoos thiab ob peb cov khoom seem, yog tias nws yog kev seev cev ntawm kev sib haum xeeb. Nws tsis yog tsuas yog melting hlau thiab ncuav nws mus rau hauv lub plhaub ceramic. Nws yog hais txog kev tswj qhov sib txawv ntawm qhov theoretical ntom ntom ntawm koj tus qauv CAD thiab qhov tseeb ntawm lub cev ntawm solidifying steel - shrinkage, distortion, inclusions. Ntau tus neeg tuaj tshiab, txawm tias qee tus neeg yuav khoom, xav tias nws yog txheej txheem khawv koob rau txhua yam nyuaj. Tsis yog. Nws yog lub cuab yeej muaj zog, tab sis tsuas yog tias koj nkag siab nws cov lus.
Core Illusion: As-Cast Finish
Cia peb ua qhov no ncaj nraim. Lub sij hawm as-cast finish in steel peev casting yuav luag ib tug misnomer yog hais tias koj nyob nraum xav txog ib tug machined nto. Qhov koj tau txais yog qhov zoo tshaj plaws tau nto ncaj qha los ntawm cov pwm ceramic, uas zoo heev piv rau cov xuab zeb casting, tab sis nws tseem yog qhov cam khwb cia. Rau lub hydraulic valve lub cev, nws yuav zoo rau qhov chaw tsis sib khi. Rau lub turbine hniav lub aerofoil, nws yog ib qho tseem ceeb. Tus nqi Ra tej zaum yuav zoo rau ntawm daim ntawv, tab sis dab ntxwg nyoog yog nyob rau hauv lub zos nto kev ntxhib los mos - micro-porosity, me ntsis txiv kab ntxwv tev nyhuv los ntawm cov ceramic slurry. Kuv tau pom cov phiaj xwm kaw vim tias pab pawg tsim qauv tau teev tseg raws li-cam khwb cia Ra ntawm 3.2μm thoob plaws tag nrho, tsis paub tias cov ces kaum sab hauv thiab undercuts ib txwm khiav rougher. Koj yuav tsum tau tsim nrog cov txheej txheem hauv siab, tsis yog yuam cov txheej txheem kom ua raws li qhov zoo tagnrho.
Qhov no yog qhov kev koom tes nrog ib lub tuam txhab ua engineering, tsis yog kev yuav khoom xwb. Lub khw zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog rau lawv peb xyoo caum hauv plhaub thiab peev casting, yuav qhia rau koj tam sim no. Lawv twb pom tas lawm. Lawv tus nqi tsis yog hauv kev ua lub plhaub xwb; Nws yog nyob rau hauv kev tshuaj xyuas koj daim duab thiab taw qhia, Pom cov phab ntsa nyias no nyob ib sab ntawm lub nra loj? Qhov ntawd yog qhov chaw kub. Nws yuav yog kos porosity los yog ua rau ib tug shrink kab noj hniav nyob rau hauv lub lug. Cia peb ntxiv ib qho riser ntawm no, lossis zoo dua, peb puas tuaj yeem hloov pauv me ntsis geometry? Qhov kev sib tham ntawd txuag lub lim tiam ntawm kev soj ntsuam tsis ua haujlwm tom qab.
Lub plhaub tsev txheej txheem nws tus kheej yog xuas tes ua. Thawj slurry dip, xuab zeb stucco, lub voj voog ziab-txhua txheej yog lub sijhawm los qhia txog kev hloov pauv. Ib hnub ntub dej hauv Qingdao tuaj yeem ua rau kom qhuav, cuam tshuam rau lub plhaub kawg lub zog. Ib tug zoo foundry tswj qhov no, tab sis nws tsis yog ib tug push-button ua hauj lwm. Thaum koj mus ntsib ib qho chaw thiab pom kab ntawm cov racks qhuav, txhua tus nrog pawg ntawm cov plhaub dawb zoo li cov qe coj txawv txawv, koj tab tom saib lub plawv ntawm cov txheej txheem. Lub precision yog tsim txheej los ntawm literal txheej.
Kev xaiv cov khoom: Nws yeej tsis yog hlau xwb
Kev qhia txog carbon steel zoo li taug kev mus rau hauv tsev noj mov thiab thov zaub mov. Nws tsis muaj qab hau. Puas yog peb tham txog qhov qis-carbon 1020 rau ib qho yooj yim bracket? Los yog 4340 rau lub zog siab, cua sov-kho tsaws iav tivthaiv? Lub alloy dictates txhua yam: pouring kub, fluidity, shrinkage yam, kev kho cua sov teb, thiab kawg txhua yam khoom.
Qhov no yog lwm qhov chaw uas muaj kev paub trumps txoj kev xav. Rau corrosion-resistant qhov chaw, 304 lossis 316 stainless yog ib qho nug. Tab sis 316 muaj zoo casting fluidity dua 304, uas txhais tau hais tias finer nthuav dav rov ua dua. Txawm li cas los xij, yog tias qhov yuav tsum tau ua haujlwm tseem ceeb tom qab casting, qhov ua haujlwm hnyav ntawm 316 tuaj yeem ua npau suav phem rau lub khw machining. Qee lub sij hawm, xaiv rau qib machinable ntau dua li 303, txawm tias muaj kev tiv thaiv corrosion me ntsis, yog qhov kev xaiv ntse dua qib. QSY qhov kev paub nrog stainless thiab tshwj xeeb alloys zoo li cov nickel-raws li muab rau lawv lub tsev qiv ntawv ntawm cov tswv yim pom zoo. Lawv tsis yog nchuav hlau xwb; lawv tab tom cia siab tias tag nrho cov saw hlau tsim khoom.
Tom qab ntawd muaj cov ntawv thov tiag tiag-kub kub, hnav siab. Qhov ntawd yog qhov chaw cobalt thiab nickel superalloys tuaj peev casting txheej txheem yog yuav luag tib txoj kev los tsim cov ntaub ntawv intractable rau hauv complex duab. Tab sis tus nqi tsis yog nyob rau hauv cov khoom siv raw, uas yog astronomical. Nws yog nyob rau hauv tus txheej txheem tswj. Cov alloys no rhiab heev rau thermal shock; pre-heat kub ntawm lub plhaub ua ntej pouring ua ib qho tseem ceeb parameter, feem ntau ntsuas thiab tswj nyob rau hauv ob peb kaum degrees. Ib qho yuam kev ntawm no tsis yog txhais tau hais tias muaj qhov tsis zoo; Nws tuaj yeem txhais tau tias lub plhaub tawg thiab cov khoom kim heev ntawm molten superalloy.
Cov Khoom Siv: Casting rau CNC Machining
Qhov no yog qhov chaw ua-lossis-tawg uas muaj ntau tus neeg sawv cev nrhiav kev tawm tsam nrog. Lub zoo meej casting yog tsis muaj txiaj ntsig yog tias lub khw machining tsis tuaj yeem tuav nws kom zoo rau lub ntsej muag datum. Qhov kev sib txhuam loj tshaj plaws feem ntau yog cov khoom pov tseg raws li-cam khwb cia. Muab ntau dhau, thiab koj nyob nraum nkim lub sij hawm machining thiab cuab yeej lub neej ntawm tsuas yog hogging tawm cov khoom tshaj. Muab me ntsis, thiab ib qho me ntsis tawm-ntawm-kev kam rau siab casting phab ntsa txhais tau hais tias lub tshuab txiav tsis tuaj yeem ntxuav qhov chaw, ua rau muaj qhov seem.
Kev sib xyaw ua haujlwm muaj txiaj ntsig zoo ntawm no. Qhov no yog vim li cas QSY tus qauv, sib txuas casting thiab lawv tus kheej CNC machining, yog li zoo. Lawv pab pawg machining ua haujlwm ncaj qha nrog lawv qhov chaw tsim khoom. Lawv tsim ib lub voj voog tawm tswv yim. Cov machinists qhia lub foundry, Peb nyob nraum tsis tu ncua nrhiav no flange 0.5mm thicker ntawm ib sab, ua rau kev co nyob rau hauv peb fixture. Lub foundry tuaj yeem kho tus qauv siv quav ciab lossis qhov chaw nkag los kho nws. Qhov kev sib koom tes sab hauv no tshem tawm qhov kev liam ntawm kev ua si ntawm cov neeg muag khoom sib cais thiab ua kom muaj kev txhawb siab rau qhov kawg zoo.
Kuv nco qab txog qhov project rau lub twj tso kua mis impeller hauv duplex stainless hlau. Lub casting yog zoo nkauj, tab sis qhov tseem ceeb bore rau lub ncej xav tau ib tug zoo meej nias-haum kam rau ua. Qhov kev sib tw yog tswj lub qhov sib npaug ntawm qhov sib npaug tom qab kev ntxhov siab los ntawm kev siv tshuab. Vim tias QSY tuav ob theem, lawv tau tsim ib ntu: lub tshuab ntxhib, kev ntxhov siab, tom qab ntawd tshuab tiav. Lub hauv paus txheej txheem tau kho cov txheej txheem txias tom qab shakeout kom txo qis kev ntxhov siab thaum pib. Hom kev sib koom ua ke no yog tsis yooj yim sua thaum casting thiab machining raug faib. Ib feem tsis yog nrum xwb; nws yog tsim.
Gating and Feeding: Unseen Geometry
Yog tias qhov kawg yog cov duab puab, lub rooj vag thiab riser system yog scaffolding. Thiab nws tseem ceeb heev. Lub rooj vag tsim tsis zoo tuaj yeem ua rau muaj kev kub ntxhov, nqus cua thiab oxides rau hauv ib feem. Ib qho misplaced riser uas me dhau lawm yuav tsis pub cov hlau ua kua rau hauv qhov chaw shrinking, tsim cov porosity sab hauv. Qhov porosity no tsuas yog pom thaum kuaj X-ray lossis, qhov phem dua, hauv kev pabcuam tsis ua haujlwm.
Niaj hnub nimno simulation software pab, tab sis nws tsis yog lub pob siv lead ua. Nws muab rau koj ib daim ntawv qhia thermal gradient. Koj tseem xav tau tus kws tshaj lij los txhais nws thiab txiav txim siab ntawm qhov kev teeb tsa rooj vag. Qhov no yog kev sib xyaw ntawm science thiab kos duab. Qee lub sij hawm, qhov zoo tshaj plaws qhov rooj rau lub suab tsim ua npau suav phem rau kev txiav tawm thiab sib tsoo tom qab. Koj yuav tsum sib npaug metallurgical soundness nrog cov nqi ua haujlwm thib ob. Kuv tau tawm tswv yim rau tus nqi kim dua, ntau lub rooj vag tsim vim nws ua kom zoo hauv qhov kev nyab xeeb-tseem ceeb. Tus nqi yog siab dua thawj zaug trimming ua hauj lwm, tab sis nws tiv thaiv lub peev xwm rov qab los. Qhov ntawd yog kev txiav txim hu.
Rau cov khoom me me, cov khoom ntim siab, zoo li cov khoom siv kho hniav lossis cov hniav nyiaj hniav kub, lawv feem ntau siv cov ntoo teeb tsa, nrog rau ntau qhov chaw txuas rau hauv nruab nrab sprue. Rau cov khoom siv hluav taws xob loj dua, xws li lub cev lub cev lossis cov turbine vaj tse, txhua feem yuav muaj nws tus kheej lub rooj sib tham. Qhov kev xaiv cuam tshuam cov txiaj ntsig, kev npaj them rau lub cub tawg, thiab tag nrho cov nqi. Ib tug foundry qhov kev txawj ntse yog xav txog nyob rau hauv lawv gating tsim efficiency-ua kom zoo tshaj tawm los ntawm qhov zoo ib phaus ntawm hlau poured.
Ua tsis tau ib tug Xib Hwb
Koj tsis tau kawm tiag steel peev casting mus txog thaum koj twb muaj ib tug loj tsis ua hauj lwm rau dissect. Thaum ntxov ntawm kuv lub sijhawm, peb muaj ib pawg ntawm cov hlau tsis tshua muaj hlau uas ua kom tawg thaum kho cua sov. Cov castings dhau qhov kev pom thiab qhov loj me. Cov ntaub ntawv pov thawj tau zoo. Qhov teeb meem yog non-metallic inclusions - me me ceramic hais los ntawm lub plhaub uas tau nkag mus rau hauv cov hlau. Cov kev suav nrog no ua raws li kev ntxhov siab concentrators. Nyob rau hauv lub thermal kev nyuaj siab ntawm kev kho cua sov, lawv pib tawg.
Lub hauv paus ua rau? Nws yog kev sib xyaw ua ke. Lub plhaub cov ntaub ntawv thermal expansion yog me ntsis mismatch rau cov qib steel tshwj xeeb, ua rau me me spalling. Thiab lub pouring ceev yog ib tug tad siab heev, tsim turbulent flow uas yuav detach hais. Qhov kho tsis yog ib yam. Peb hloov mus rau qhov sib txawv refractory hmoov nyob rau hauv lub prime slurry rau qhov alloy thiab cob qhia lub ncuav pab neeg ntawm ib tug qeeb qeeb, ntau laminar ncuav. Nws ua haujlwm. Koj tsis pom qhov kev daws teeb meem hauv phau ntawv; koj pom nws nyob rau hauv pem teb, saib ntawm ib tug tawg nto nyob rau hauv lub microscope.
Qhov no yog vim li cas lub neej ntev hauv kev lag luam no tseem ceeb. Ib lub tuam txhab ua haujlwm rau ntau dua 30 xyoo, zoo li ib qho tom qab https://www.tsingtaocnc.com, muaj qhov sib sib zog nqus, lub koom haum nco txog cov kev ua tsis tiav no. Tej zaum lawv yuav ntsib thiab daws teeb meem uas koj tseem tsis tau xav txog. Qhov kev paub ntawd tau muab tso rau hauv lawv cov ntawv txheej txheem thiab lawv cov kws tshaj lij txoj kev xav. Thaum lawv hais kom hloov me ntsis rau koj tus qauv tsim lossis lawv cov txheej txheem txheej txheem, nws feem ntau yog vim lawv tau hlawv ua ntej. Cov lus qhia ntawd tsim nyog nws qhov hnyav hauv cov hlau.
Saib rau pem hauv ntej: Tsis yog Txoj Cai Lij Choj xwb
Ib txhia pom peev casting li qub-tsev kawm ntawv, paub tab technology. Nws tsis zoo li qub. Kev koom ua ke nrog 3D luam ntawv yog qhov pom tseeb kev ua si hloov pauv. Cov ntawv luam tawm los yog cov qauv resin tshem tawm qhov xav tau ntawm cov cuab yeej nyuaj rau cov qauv los yog cov ntim qis. Qhov no tso cai rau tsim iterations ntawm ib tug ceev uas yog unimaginable 20 xyoo dhau los. Tab sis qhov tiag frontier yog nyob rau hauv cov ntaub ntawv thiab hybrid txheej txheem.
Peb tab tom pom kev xav tau ntau dua rau kev ua haujlwm zoo graded castings, qhov twg cov khoom hloov pauv thoob plaws. Qhov no tseem yog feem ntau hauv R & D, tab sis nws taw qhia rau kev taw qhia. Tsis tas li ntawd, txoj kab ntawm casting thiab additive manufacturing yog qhov muag tsis pom. Puas yog qhov ncaj qha hlau luam tawm uas tom qab kub-isostatically nias (HIP'd) txawv ntawm qhov cam khwb cia? Lub metallurgy pib converge.
Txog tam sim no, thiab rau lub neej yav tom ntej, steel peev casting tseem yog tus nqi-zoo tshaj plaws los tsim cov khoom nruab nrab-rau-siab ntim ntawm cov khoom siv hlau, siab ncaj ncees. Nws lub zog tsis yog nyob rau hauv ua lub flashiest technology, tab sis nyob rau hauv ua ib tug nkag siab tob, txhim khu kev qha, thiab adaptable. Qhov tseem ceeb yog koom nrog nws tsis yog kev pabcuam khoom muag, tab sis raws li kev qhuab qhia tshwj xeeb engineering. Nrhiav cov neeg koom tes uas hais cov lus ntawd, leej twg pom qhov tsis yog tsuas yog kos duab los qhia, tab sis raws li lub cev khoom uas yuav tsum ua hauv lub ntiaj teb tiag. Qhov ntawd yog qhov uas tus nqi tiag tiag raug pov tseg.
