Thaum koj hnov 'kev nqis peev casting chaw tsim khoom', dab tsi los rau hauv siab? Rau ntau, nws yog ib daim ntawv qhia glossy tag nrho ntawm ci iab, complex qhov chaw. Qhov tseeb, kev sib tsoo txhua hnub, yog lwm yam nkaus. Nws yog qhov tsawg dua ntawm daim duab kawg zoo meej thiab ntau ntxiv txog qhov tsis hnov tsw ntawm burnt siv quav ciab thaum sawv ntxov, qhov kawg parameter tweaks rau ib tug tshiab superalloy, thiab nyob ntsiag to ntshai thaum lub plhaub tawg thaum lub sij hawm dewaxing. Lub sij hawm nws tus kheej tuaj yeem ua yuam kev - nws qhia txog qhov ua kom pom tseeb. Qhov tseeb, cov khw zoo tshaj plaws tsis yog cov chaw tsim khoom xwb; lawv yog cov kev daws teeb meem kev sib koom ua ke, txuas qhov sib txawv ntawm CAD qauv thiab kev ua haujlwm, muaj kev ncaj ncees siab. Ntau tus neeg yuav khoom tau kho ntawm tus nqi lossis lub sijhawm ua haujlwm, ploj lawm qhov tseem ceeb nuance: kev sib haum xeeb hauv kev ntxhov siab thermal, qhov kev ncaj ncees ntawm qhov chaw thib tsib, thiab kev paub txog metallurgical yuav ua li cas los tiv thaiv tus nqi batch tsis ua haujlwm rau lub hlis hauv kab.
Lub Core Misconception: Nws tsuas yog Pouring Hlau
Wb txiav mus caum. Qhov yuam kev loj tshaj plaws yog saib peev casting raws li cov txheej txheem khoom. Koj xa ib daim duab, koj tau txais ib feem. Yog tias tsuas yog. Tus nqi tiag tiag ntawm cov chaw tsim khoom nyob hauv qhov tshwm sim ua ntej cov hlau puas pom lub qhov cub. Siv cov cuab yeej ua qauv. Ib qho pheej yig, ceev nrooj machined txhuas tuag yuav txuag tau $ 5k ua ntej. Tab sis yog tias nws tsis muaj cov qauv tsim nyog, lossis nws qhov kev nthuav dav thermal tsis suav nrog, koj yuav tau txais cov qauv siv quav ciab uas cuam tshuam rau qhov kev npau suav phem tom qab-casting. Kuv tau pom tej yaam num uas 'savings' ntawm tooling ua rau rau-daim duab poob nyob rau hauv seem thiab ncua kev sib dhos. Ib lub khw muag khoom, zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), yuav sib cav, qee zaum strenuously, rau kev tsim cov cuab yeej muaj zog dua. Nws tsis yog upselling; nws tiv thaiv kev puas tsuaj. Lawv peb lub xyoo caum hauv qhov kev ua si txhais tau tias lawv twb tau ua yuam kev koj tab tom yuav them rau.
Ces muaj wax. Tsis yog txhua qhov kev txhaj tshuaj waxes coj zoo ib yam. Rau qhov nyias-walled aerospace bracket, koj xav tau ib qho qis-viscosity, high-fluidity formulation kom ntes cov ntsiab lus zoo yam tsis muaj dab dej. Rau lub cev hnyav-section valve lub cev, lub zog siv quav ciab yog qhov tseem ceeb los tiv thaiv deformation thaum tuav. Kev xaiv tsis yog arbitrary; nws yog kev txiav txim hu ua geometry, alloy, thiab cov txheej txheem tom qab lub plhaub-tsev. Kuv nco qab ib txoj hauj lwm rau lub twj tso kua mis impeller qhov twg peb hloov mus rau ib tug polymer-hloov ciab. Tus nqi tsev tau nce mus txog 15%, tab sis qhov txo qis hauv kev kho vuam ntawm qhov kawg casting vim qhov zoo ntawm qhov tiav tau cawm cov neeg siv khoom ntau dua 40% hauv cov nqi tiav. Qhov ntawd yog tus lej zais.
Thiab lub tsev plhaub? Qhov ntawd yog qhov uas kos duab ntsib science. Nws tsis yog tsuas yog dipping thiab stuccoing. Lub slurry viscosity, qhov ziab ib puag ncig (kev tswj cov av noo yog cov tsiaj nyaum), tus naj npawb ntawm cov tsho tiv no - txhua qhov sib txawv yog lub zog uas cuam tshuam rau permeability thiab lub zog. Lub plhaub tsis muaj zog heev yuav tawg thaum lub sij hawm nchuav; dhau impermeable, thiab koj tau txais gas entrapment. Kuv tau siv hmo ntuj hauv khw nrog cov kws tshaj lij, kho cov zirconia hmoov cov ntsiab lus nyob rau hauv lub tsho loj slurry los ntawm ib nrab ib feem pua kom tshem tawm cov hlau nkag mus rau hauv cov vaj tsev stainless hlau. Qhov no tsis nyob hauv ib daim ntawv qhia. Nws yog nyob rau hauv phau ntawv sau scribbles thiab sib koom kev ntxhov siab thaum qhov kev xeem batch ua tsis tiav.
Cov khoom siv maze: Alloys tsis tsim sib npaug
Txhua tus neeg thov ua haujlwm nrog 'stainless steel' lossis 'nickel-based alloys'. Dab ntxwg nyoog yog nyob rau hauv daim ntawv spec: 316L piv rau 316, Inconel 718 piv rau 625. Qhov sib txawv feem ntau nyob rau hauv kev kho cua sov thiab yuav ua li cas cov hlau coj thaum lub sij hawm solidification theem. Kev nqis peev casting yog cov txheej txheem nrawm nrawm, uas tuaj yeem ua rau kev sib cais ntawm cov hlau alloying yog tias tsis tswj tau. Rau ib lub tuam txhab xws li QSY, uas teev cobalt-based alloys thiab Nickel-raws li alloys raws li kev tshwj xeeb, qhov no tsis yog lub thawv ntawv. Nws txhais tau hais tias lawv tau hu rau hauv qhov kub thiab txias, pwm ua ntej cua sov, thiab cov nqi cua txias tshwj xeeb rau cov ntaub ntawv finicky.
Ib qho piv txwv: peb ib zaug khiav ib pawg ntawm cobalt alloy (Stellite 6) hnav daim hlau. Cov chemistry tau zoo tag nrho, tab sis cov khoom tau pom tias micro-cracking. Qhov teeb meem? Lub plhaub txheem peb siv rau stainless muaj qhov sib txawv thermal shock teb. Lub cobalt alloy, nrog nws cov sib txawv solidification ntau yam, xav tau ib lub plhaub nrog ib tug me ntsis hloov refractory sib tov kom haum rau qhov contraction. Kev kho tsis yog nyob rau hauv lub melting department; nws tau rov qab rau ntawm lub tank slurry. Qhov no yog kev koom ua ke uas kuv tau hais. Cov txheej txheem casting yog cov saw hlau, thiab qhov tsis muaj zog txuas tsis yog qhov uas koj xav tau.
Qhov no yog vim li cas tus neeg tsim khoom cov npe khoom yog ib zaj dab neeg, tsis yog ntawv qhia zaub mov. Thaum koj pom 'tshwj xeeb alloys,' sojntsuam ntxaum. Nug txog lawv qhov hnyav hnyav hnyav rau cov hlau no, theem nyuaj uas lawv tau ua tiav, thiab - tseem ceeb - yog tias lawv ua lawv tus kheej spectrographic tsom hauv tsev. Tos 24 teev rau daim ntawv qhia kev kuaj sab nraud thaum lub tshav kub ntawm cov hlau zaum hauv qhov cub yog qhov khoom kim heev uas tsis muaj leej twg muaj peev xwm them taus.
Qhov twg Machining Intersects: CNC Handshake
Tsis muaj peev casting yog tiag tiag 'net-puab.' Muaj ib txwm datum ntsej muag rau tshuab, mating nto kom tiav, thiab xov rau kais. Qhov no yog qhov uas tus qauv ntawm kev sib xyaw ua ke peev casting thiab CNC machining kev ua haujlwm qhia nws cov xim tiag tiag. Qhov txiaj ntsig tseem ceeb tsis yog kev yooj yim logistical (txawm tias yog tiag); nws yog dimensional txawj ntse.
Pab neeg machining uas ua hauj lwm nrog rau lub foundry kawm nws quirks. Lawv paub tias rau ib tsev neeg tshwj xeeb ntawm turbine blades cam khwb cia hauv Inconel, muaj kev kwv yees, tsis yog cov khoom lag luam tsis zoo ntawm lub hauv paus platform-tej zaum 0.7mm ntawm ib sab, 1.1mm ntawm lwm yam, raws li lub plhaub ntws. Lawv cov kev pabcuam CNC tuaj yeem sau tau kom haum raws li qhov xav tau qhov sib txawv, txhim kho cov cuab yeej txoj hauv kev thiab khaws cia lub neej txiav. Yog hais tias casting thiab machining yog cov chaw sib cais, qhov kev tawm tswv yim no qeeb, raug cai, thiab feem ntau poob hauv kev txhais lus. Tus kws kho tshuab tau txais ib feem nrog 'kev npaj txhij txog' cov khoom lag luam thiab liam lub chaw tsim khoom; lub foundry yog oblivious rau machinist qhov kev sib tw fixturing.
Ntawm qhov chaw sib xyaw ua ke, cov txheej txheem tom qab casting yog kev txuas ntxiv. Ib feem yog tsim nrog machining hauv siab los ntawm qhov pib. Peb feem ntau qhia ntxiv cov ntaub qhwv me me rau ntawm qhov chaw tsis tseem ceeb los muab qhov chaw ruaj ntseg clamping rau CNC, ib yam dab tsi uas yuav yog qhov kev xav tom qab (lossis tsis tuaj yeem) yog tias cov txheej txheem sib nrauj. Mus saib lawv qhov chaw ntawm tsi.com, koj tuaj yeem pom cov dej ntws no: los ntawm qhov chaw tu vaj tse, cov khoom txav ncaj qha mus rau CMM tshuaj xyuas thiab tom qab ntawd mus rau CNC txaj. Qhov kev txuas ntxiv no txo qis tuav kev puas tsuaj, txiav lub sijhawm txhuas, thiab, qhov tseem ceeb tshaj plaws, tsim kom muaj lub luag haujlwm sib koom ua ke rau qhov kawg ntawm qhov zoo.
Qhov Tsis Ua Haujlwm Archive: Cov Lus Qhia hauv Cov Khaub Ncaws
Koj kawm tau ntau dua los ntawm kev ua tsis tau zoo tshaj qhov zoo tshaj plaws. Leej twg hais tias lwm yam yog muag ib yam dab tsi. Thaum ntxov ntawm kuv lub sij hawm ua hauj lwm nrog cov txheej txheem no, peb muaj ib qho kev txiav txim rau ib tug complex ductile hlau manifold. Cov prototypes tau zoo nkauj. Nyob rau hauv tag nrho cov khoom, peb pib tau random, brittle fractures. Tus neeg ua txhaum? Ib qho kev hloov pauv hauv cov inoculant siv rau hauv kev kho hlau, ua ke nrog kev ua kom txias me ntsis hauv peb cov pwm tshiab, loj dua qub. Lub metallurgy tau suab ntawm daim ntawv, tab sis cov txheej txheem kev sib cuam tshuam tau raug kaw. Peb daws nws los ntawm kev kho cov pwm ua ntej cua sov thiab hloov mus rau qhov qub inoculant, tab sis tsis yog ua ntej scrapping ib qho tseem ceeb batch.
Qhov no yog sab unglamorous. Cov chaw tsim khoom zoo muaj cov ntaub ntawv khaws tseg ntawm cov dab neeg no - lawv tus kheej thiab kev lag luam cov lus dab neeg. Lawv yuav tsum paranoid txog cov txheej txheem drift. Thaum ib pawg tshiab ntawm cov xuab zeb refractory tuaj txog, lawv puas khiav lub plhaub sim? Thaum cov av noo nce siab thaum Lub Xya Hli, lawv puas kho lub voj voog kom qhuav? Qhov kev ceev faj txog kev ua haujlwm no yog 30 xyoo ntawm kev paub, zoo li QSY cov ntaub ntawv, txhais tau tias tiag tiag. Nws tsis yog 30 xyoo rov ua dua; nws yog 30 xyoo ntawm kev hloov mus rau ib txhiab qhov sib txawv me me.
Lwm qhov classic 'tsis ua haujlwm' yog kev sib txuas lus tsis zoo ntawm specs. Ib daim duab hu rau Roughness ntawm 125 Ra max. Raws li-cam khwb cia, peb tuaj yeem tsoo qhov ntawd. Tab sis yog tias tus neeg siv khoom xav tau lub tshuab ua tiav ntawm qhov chaw thiab tsis nco qab sau nws, qhov tsis muaj txiaj ntsig. Tam sim no, ib lub khw muaj kev paub yuav ntes tau qhov no. Lawv yuav pom kev ua siab ntev rau ntawm lub bore lossis ib daim ntawv qhia txog lub foob pob thiab hu kom meej: Koj puas ua lub ntsej muag no? Vim li-cam khwb cia, peb tsis tuaj yeem tuav qhov flatness. Qhov kev hu xov tooj ntawd, lub sijhawm ntawm kev tsis ntseeg thiab kev qhia meej, muaj nqis ntau tshaj li ib txhiab zoo meej tab sis nkag siab yuam kev.
Qhov Kev Ntsuas Tiag: Kev Sib Raug Zoo Tshaj Tawm Ntev Ntev
Yog li, ua li cas koj txiav txim ib peev casting chaw tsim tshuaj paus? Tsis txhob nug rau lawv tus qauv zoo tshaj plaws. Nug rau lawv cov txheej txheem txheeb cais (SPC) cov ntaub ntawv rau qhov tseem ceeb ntawm qhov kev ua haujlwm ntev. Nug txog lawv qhov feem pua ntawm thawj-pass yield. Nug txog lawv cov txheej txheem kom tsim nyog rau cov khoom siv tshiab lossis tus neeg muab khoom tseem ceeb tshiab. Cov lus teb yuav qhia koj txhua yam.
Lub hom phiaj tsis yog los tsim ib qho txuj ci tseem ceeb rau kev ua lag luam. Nws yog los tsim ntau tus lej 500 nrog kev ntseeg tau zoo ib yam li ntau tus lej 1, tsib xyoos sib nrug, txawm tias tus thawj cuab yeej cuab tam tau so haujlwm. Qhov no yuav tsum muaj cov txheej txheem, tab sis kuj yog kab lis kev cai uas hwm cov khoom siv tes ua. Nws yog cov qub tub rog pwm assembler uas xav tias ib tug me ntsis luag ntawm ib tug siv quav ciab qauv thiab paub tus tuag xav tau kev ntxuav ua ntej lub CMM chij ib tug seem yuam kev.
Thaum kawg, kev koom tes nrog cov chaw tsim khoom yog hais txog kev nkag mus rau lawv lub cim xeeb ntawm kev daws teeb meem thiab kev puas tsuaj averted. Nws yog hais txog lawv txaus siab hais tias tsim yuav muaj teeb meem, ntawm no yog vim li cas ua ntej lub cuab tam steel raug txiav. Thaum koj saib cov ntaub ntawv los ntawm ib lub tuam txhab uas ua khub plhaub molding nrog precision machining, koj tab tom pom qhov kawg tshwm sim ntawm qhov kev sib koom ua ke, kev daws teeb meem kev xav. Ib feem tsis yog nrum xwb; nws yog engineered, yug los ntawm tus txheej txheem uas txiav txim siab txhua kauj ruam los ntawm chav tsev ciab mus rau qhov kawg deburring. Qhov ntawd yog cov khoom qab lo lus tseem ceeb.
