Qhov kev faib ua feem ntawm ncej- ua tom qab hlau 3D luam ntawv nyob rau hauv tag nrho cov nqi tsim khoom yog dab tsi?

一, Cov khoom uas tsim cov ncej- cov nqi ua haujlwm thiab lawv qhov tseem ceeb
Muaj plaub qhov kev siv thev naus laus zis tseem ceeb uas ua rau tom qab- ua cov hlau 3D luam ntawv: tshem tawm cov khoom siv, kev kho cua sov, kev kho deg, thiab kev txhim kho cov qauv. Txhua lub module muaj cov nqi xws li khoom siv, kev siv zog, thiab kev ua haujlwm.

Kev tshem tawm cov ntaub ntawv: qhov no suav nrog kev tshem tawm cov qauv kev txhawb nqa, ua kom tiav qhov chaw, thiab kho qhov ntev. Piv txwv li, tom qab luam ntawv, qhov saum npoo ntawm cov dej ntws ntawm lub tshuab hluav taws xob yuav tsum tau iav polished siv tsib -axis linkage machining centre. Nws tuaj yeem siv sijhawm ntau teev los tsim ib qho, thiab feem ntau ntawm cov nqi ntawd yog rau cov khoom siv thiab kev ua haujlwm.
Kev kho cua sov yog cov txheej txheem ntawm kev tshem tawm cov kev ntxhov siab sab hauv thiab txhim kho cov qauv ntawm cov nplej. Qhov no tuaj yeem ua tiav los ntawm kev sib tsoo, kev daws teeb meem + kev laus, thiab kub isostatic nias (HIP). Nqus annealing kev kho mob txo qhov seem ntawm kev ntxhov siab los ntawm 80% tom qab luam ntawv titanium alloy orthopedic cog. Txawm li cas los xij, nws xav tau lub tshuab nqus tsev tshwj xeeb thiab lub sijhawm ntev- rwb thaiv tsev, uas ua rau feem ntau ntawm kev siv hluav taws xob.
Kev kho deg: txoj kev muaj xws li sandblasting, electroplating, laser cladding, micro arc oxidation, thiab lwm yam uas npog saum npoo. Tom qab luam ntawv lub bracket rau lub zog tshiab lub tsheb roj teeb pob, micro arc oxidation kev kho mob tau nce nws cov kev tiv thaiv corrosion nyob rau hauv cov tshuaj tsuag ntsev mus rau ntau tshaj 1000 teev. Txawm li cas los xij, tus nqi ntawm cov tshuaj thiab cov khoom siv tu yog kim heev.
Kev txhim kho cov qauv, xws li fiber ntau reinforcement, gradient cov ntaub ntawv tsim, thiab lattice qauv optimisation. Cov ntawv luam tawm ntawm qee lub tshuab hluav taws xob nuclear siv cov qauv gradient ua los ntawm nickel-raws li alloy stainless hlau. Qhov no yuav tsum muaj cov txheej txheem sib xyaw ntawm ntau-cov ntaub ntawv co- luam ntawv thiab kev kho cua sov. Cov txheej txheem nyuaj ua rau kev tshawb fawb thiab kev tsim kho thiab kev sim ntau lawm kim dua.
2, Cov ntaub ntawv los ntawm kev lag luam thiab cov ntaub ntawv tshawb fawb txog feem pua ​​​​ntawm cov nqi xa tawm - cov nqi ua haujlwm
1. Kev kuaj xyuas tus nqi qauv hauv cov qauv kev lag luam
Hauv thaj chaw aerospace, piv txwv li, cov roj tank thav duab ntawm lub cav foob pob hluav taws raug nqi li ntawm 40% rau luam tawm, 35% rau kev tshaj tawm - txheej txheem (15% rau HIP ua, 12% rau CNC milling, thiab 8% rau anodising), thiab 25% mus yuav cov ntaub ntawv. Qhov feem pua ​​​​ntawm cov ntawv tshaj tawm - cov nuj nqis ua haujlwm yog vim qhov chaw yuav tsum ua haujlwm zoo hauv qhov chaw hnyav heev, uas txhais tau tias lawv yuav tsum mus dhau ntau kauj ruam kom ntseeg tau tias lawv ntseeg tau.
Thaum nws los txog rau cov khoom siv kho mob, tus nqi ntawm kev tshaj tawm - ua cov kev cai titanium alloy hip sib koom cog cog tom qab luam tawm yog kwv yees li 28% (nrog rau kev kho cua sov nqi 12%, polishing nqi 10%, thiab sterile ntim nqi 6%). Tus nqi ntawm cov ntaub ntawv yog 35%, thiab tus nqi tsim thiab siv tau yog 37%. Qhov feem pua ​​​​ntawm cov nqi xa tawm - cov nqi ua haujlwm tsis loj heev, tab sis qhov yuav tsum tau ua rau qhov roughness (Ra < 0.2 μ m) thiab biocompatibility txhais tau tias siab - precision machining thiab kev ua haujlwm tshwj xeeb yog xav tau.
Hauv ntiaj teb cov khoom siv hluav taws xob: Piv txwv li, tus nqi luam ntawv rau lub xov tooj folding lub xov tooj txawb pob khawm scroll yog 55%, tus nqi xa tawm yog 25% (10% rau kev txhawb nqa tshem tawm, 8% rau kev kho cua sov, thiab 7% rau saum npoo sandblasting), thiab cov khoom siv yog 20%. Cov txiaj ntsig ntawm kev tsim khoom loj muaj qhov cuam tshuam loj rau feem pua ​​​​ntawm cov nqi xa tawm - ua cov nqi. Raws li cov zis tawm mus, tus nqi ntawm ib chav tsev poob qis.
2. Qhov kev xaiv ntawm cov txheej txheem cuam tshuam li cas rau cov nqi tom qab kho
Cov txheej txheem hmoov txaj melting (PBF): Qhov feem pua ​​​​ntawm kev tshaj tawm - cov kev siv nyiaj ua haujlwm feem ntau yog qhov tseem ceeb vim tias cov qauv kev txhawb nqa yuav tsum tau ntxiv thaum lub sijhawm luam ntawv. Thaum koj siv SLM thev naus laus zis los luam tawm ib feem ntawm lub dav hlau cov qauv, 30% ntawm tus nqi yog rau tshem tawm cov kev txhawb nqa thiab polishing nto. Thaum koj siv EBM thev naus laus zis yam tsis muaj kev txhawb nqa, tus nqi no nqis mus rau 15%.
Cov txheej txheem nplaum nplaum (BJ) ua rau ze rau -net forming tau los ntawm degreasing thiab sintering lub cev ntsuab tom qab luam ntawv. Qhov no txo ​​cov nuj nqis ntawm kev tshaj tawm - kev kho mob los ntawm tus nqi ntau. Tom qab luam ntawv lub tsheb log tsheb nrog BJ thev naus laus zis, tus nqi ntawm kev tshaj tawm - ua haujlwm tsuas yog 12% (feem ntau yog kev kho cua sov thiab kev ua haujlwm me me). Qhov no yog ntau dua 50% tsawg dua tus nqi ntawm kev tshaj tawm - ua haujlwm nrog PBF thev naus laus zis.
Directed Energy Deposition (DED) txheej txheem: zoo rau kev kho cov khoom loj thiab npaj rau txheej; tus nqi ntawm kev tshaj tawm - kev ua haujlwm yog nyob ntawm seb cov txheej luam ntawv tuab npaum li cas. Thaum cov txheej txheem luam ntawv tuab ntawm qee lub tshuab mining iav yog 1 hli, tus nqi ntawm kev xa ntawv - ua haujlwm tsuas yog 8%. Tab sis thaum cov txheej thickness qis dua mus rau 0.3 hli, tus nqi ntawm polishing nce mus txog 15% vim tias qhov chaw ua rougher.
3, Cov ntsiab lus uas cuam tshuam rau kev faib ua feem ntawm kev tshaj tawm - cov nqi ua haujlwm thiab qhov zoo tshaj plaws los hloov lawv
1. Kev tshuaj xyuas cov ntsiab lus txhawb nqa
Yuav tsum tau ua li cas cov ntaub ntawv ua haujlwm: Cov ntaub ntawv ua tau zoo xws li siab - kub alloys thiab titanium alloys yuav tsum tau kho HIP kom tshem tawm qhov pores, uas tuaj yeem pab txhawb txog li 20% -30% ntawm tag nrho cov nqi.
Qhov nyuaj npaum li cas yog: Ntau-axis machining thiab kev sim tshwj xeeb yog xav tau rau cov yam ntxwv nyuaj xws li cov kav dej sab hauv thiab cov kab lattice. Tom qab luam tawm lub tshuab dav hlau dav hlau dav hlau, CT kuaj tus nqi 25% ntawm tag nrho cov nqi ntawm kev xa tawm - ua.
Batch scale: Hauv cheeb tsam cov neeg siv khoom siv hluav taws xob, thaum lub ntim ntawm ib pawg luam ntawv tshaj 10,000 daim, feem pua ​​​​ntawm cov nqi xa tawm - cov nqi ua haujlwm tuaj yeem txo qis ntawm 30% mus rau 15%. Qhov no feem ntau yog vim cov kab ntau lawm thiab cov txheej txheem solidification.
Kev ua haujlwm thev naus laus zis: Qhov sib txawv ntawm qhov raug thiab ruaj khov ntawm cov khoom siv hauv Teb Chaws Asmeskas thiab cov cuab yeej ua nyob rau hauv lwm lub teb chaws txhais tau hais tias 10% mus rau 15% kev ua hauj lwm ntau dua yuav tsum tau ua tom qab ua tiav ntawm US - cov cuab yeej ua, uas ua rau cov nqi tsis ncaj.
2. Saib txoj hauv kev zoo tshaj plaws kom zoo
Txheej txheem kev tsim kho tshiab: Siv cov thev naus laus zis xws li kev luam ntawv hauv cheeb tsam thiab kev faib cov hmoov bidirectional los ua kom luam ntawv zoo dua thiab xav tau cov qauv kev txhawb nqa tsawg dua. Ib lub tuam txhab tau txhim kho lawv cov txheej txheem scanning los txiav kev txhawb nqa los ntawm 40%, uas tseem txiav cov feem pua ​​​​ntawm cov ntawv tshaj tawm - cov kev siv nyiaj.
Optimizing cov ntaub ntawv: Ua cov khoom siv hmoov tshwj xeeb uas yooj yim rau kev ua haujlwm nrog thiab tsis txhob ua rau lawv ntxhov siab ntau dhau. Ib lub tuam txhab tshwj xeeb tau tso tawm titanium alloy hmoov nrog cov pa oxygen tsawg. Cov hmoov no txo ​​qis kev kho cua sov los ntawm 50℃thiab txo tus nqi siv hluav taws xob los ntawm 18% mus rau 10%.
Cov cuab yeej kho dua tshiab: Ntxiv kev tshawb nrhiav online thiab kev hloov kho thev naus laus zis los txiav txim siab qhov xav tau ntawm tib neeg los ua khoom ntawm tes. Ib lub tuam txhab uas siv AI- lub zog polishing neeg hlau tau txiav lub sijhawm nws siv los ua ib daim ntawm ob teev mus rau ib nrab teev. Tus nqi ntawm kev ua haujlwm kuj tau nqis los ntawm 25% mus rau 8%.
Ua hauj lwm ua ke nyob rau hauv cov khoom lag luam: Integrated printing thiab post- cov cuab yeej ua haujlwm tuaj yeem ua rau luv luv. Ib lub tuam txhab tshwj xeeb tau tsim "kev luam ntawv + kev kho cua sov + machining" lub tshuab sib xyaw uas txiav lub sijhawm nws siv los ua aviation cov qauv ntawm ob lub lis piam mus rau peb hnub thiab txo tus nqi los ntawm 35%.