Yuav ua li cas soj ntsuam zoo tom qab hlau 3D luam ntawv?

Ib, Tsis yog-kev sim ntsuas tshuab: saib cov khoom sab nraud kom pom qhov tsis zoo
Txoj hauv kev tseem ceeb los xyuas qhov zoo ntawm cov hlau 3D luam ntawv yog los ntawm tsis yog -kev kuaj kev puas tsuaj (NDT), uas tuaj yeem pom qhov tsis zoo hauv cov khoom tsis cuam tshuam rau cov khoom 'cov qauv. Raws li cov qauv kev tshawb pom txawv, cov thev naus laus zis feem ntau tuaj yeem muab tso rau hauv plaub pawg:
1. Micro CT, los yog kev lag luam suav tomography
Micro CT ntiav X-rays mus rau qhov chaw thiab tau txais cov ntaub ntawv los ntawm ntau lub kaum ntse ntse. Tom qab rov tsim kho dua los ntawm lub khoos phis tawj, nws tsim peb - cov duab tomographic uas tuaj yeem pom qhov tsis xws luag nrog kev daws teeb meem ntawm micrometers. Micro CT system nrog 450kV X-ray qhov chaw tuaj yeem pom qhov pores nrog txoj kab uas hla ntawm 0.02mm hauv lub taub hau aluminium alloy lub tog raj kheej thiab ntsuas cov khoom xws li porosity thiab tawg ntev. Nws cov txiaj ntsig tseem ceeb yog:
Kev soj ntsuam tag nrho: tuaj yeem pom ob qho tib si sab hauv qhov tsis zoo (xws li cov kab nrib pleb thiab qhov pores) thiab sab nrauv geometric aberrations (xws li phab ntsa thickness thiab deformation) nyob rau tib lub sijhawm.
Quantification nrog cov neeg siab: 3D reconstruction technology yuav raug kwv yees qhov luaj li cas, qhov chaw, thiab tis ntom ntom ntom.
Tsis yog-kev tiv tauj: Tsis txhob ua phem rau qhov tseeb dua.
2. Kev kuaj hluav taws xob (RT)
Raws li GB / T 35351 tus qauv rau "Kev Ntsuas Tsis Zoo ntawm Cov Khoom Siv Hlau - Radiographic Testing," kev kuaj hluav taws xob pom pom cov teeb meem sab hauv los ntawm saib cov kev hloov pauv li cas X-rays lossis gamma rays dhau los ntawm qhov chaw. Piv txwv li, thaum kuaj xyuas titanium alloy aviation hniav, kev kuaj hluav taws xob tuaj yeem pom cov txheej txheem sib txuas tsis yog- fusion teeb meem thiab ntsuas kev ntsuas qhov ntsuas tau siv cov duab zoo ntsuas (IQI). Nws muaj qee qhov teeb meem, xws li:
Kev txwv ntawm kev muaj peev xwm nkag mus: Siab- cov ntaub ntawv ceev, zoo li tungsten alloys, xav tau siab - cov khoom hluav taws xob hluav taws xob;
Cov kev txwv ntawm ob- kev yees duab qhov ntev: Overlapping projections tuaj yeem nkaum cov teeb meem hauv cov txheej txheem nyuaj.
3. Kev sim siv lub suab nthwv dej (UT)
Kev ntsuam xyuas ultrasonic siv txoj kev siab - zaus lub suab nthwv dej tawm thiab taug kev los ntawm qhov chaw kom pom nyob ze - qhov tsis zoo ntawm qhov chaw xws li tawg thiab kev suav nrog. Piv txwv li, phased array ultrasonic technology (PAUT) yuav sai sai nrhiav thiab yees duab flaws nyob rau hauv 316L stainless hlau pwm siv multi-element probes. Qee qhov ntawm nws qhov zoo yog:
rhiab heev: tuaj yeem pom cov kab nrib pleb me me li ob peb microns;
Directional dependence: Lub kaum sab xis ntawm qhov kev sojntsuam yuav tsum tau teem rau txoj cai rau lub geometry ntawm ib feem.
4. Kev kuaj nrog Laser Ultrasonic (LUT)
LUT ntiav laser pulses ua kom cov kev ntxhov siab tsis txav mus rau ntawm qhov chaw thiab pom qhov tsis zoo los ntawm kev saib seb lub suab tsis txav mus los ntawm lawv. Pab pawg Nanyang Technological University tau tsim lub tshuab laser ultrasonic uas tuaj yeem pom cov kab nrib pleb hauv titanium alloy qhov chaw hauv 15 feeb nrog kev daws teeb meem ntawm 0.1mm. Txoj kev no yog qhov zoo rau kev nrhiav qhov nyuaj nkhaus hauv online.
2, Txheeb xyuas qhov zoo ntawm qhov chaw, los ntawm microstructure mus rau cov duab macroscopic
Qhov zoo ntawm cov hlau 3D luam tawm cov khoom muaj qhov cuam tshuam ncaj qha rau lawv nyob ntev npaum li cas thiab lawv tiv thaiv corrosion zoo npaum li cas. Cov nram qab no qhov ntev yuav tsum tau soj ntsuam thaum lub sij hawm soj ntsuam saum npoo:
1. Ntsuas qhov roughness ntawm qhov chaw
Txhawm rau nrhiav qhov sib txawv ntawm tus lej lej (Ra) ntawm qhov profile ntawm qhov chaw, siv lub ntsuas qhov roughness zoo li MarSurf series. Piv txwv li, qhov chaw Ra tus nqi ntawm Ti6Al4V titanium alloy qhov chaw ua los ntawm SLM txoj kev yog ib txwm nyob nruab nrab ntawm 6 thiab 10 μm. Txhawm rau ua kom tiav cov qauv aviation, tus nqi no yuav tsum tau txo qis qis dua 0.8 μm siv electrolytic polishing.
2. Kev soj ntsuam ntawm microstructure
Siv scanning electron microscopy (SEM) los saib cov khoom 'cov qauv nplej, theem muaj pes tsawg leeg, thiab qhov tsis zoo morphology. Kub isostatic nias (HIP) tuaj yeem hloov cov duab ntawm aluminium alloy khoom, thiab SEM duab tuaj yeem ua rau pom qhov no.
3. Kev ntsuam xyuas cov tshuaj pleev ib ce
Txhawm rau kom paub tias cov tshuaj muaj dab tsi hauv cov khoom, siv X-ray fluorescence spectrometer (XRF) lossis inductively coupled plasma mass spectrometer (ICP-MS). Piv txwv li, tshawb xyuas cov ntsiab lus sib txawv ntawm Cr, Co, W, thiab lwm yam khoom hauv nickel-raws li siab- kub alloys uas tau 3D luam tawm kom lawv ua tau raws li ASTM F3001 tus qauv.
3, Kev ntsuas kev ua haujlwm ntawm lub tshuab: xyuas seb qhov hnyav npaum li cas tuaj yeem tuav tau
Nws yog ib qho tseem ceeb kom paub tseeb tias cov khoom zoo ntawm cov hlau 3D luam tawm kom paub tseeb tias lawv muaj qhov sib npaug:
1. Kev ntsuas lub zog tensile
GB / T 228.1 tus qauv hais tias yuav siv lub tshuab ntsuas thoob ntiaj teb los kuaj xyuas cov khoom ' tensile zog (Rm), yield zog (Rp0.2), thiab elongation (A). Piv txwv li, Rm ntawm 17-4PH stainless hlau qhov chaw ua nrog txoj kev SLM yuav tsum yog 1000MPa lossis siab dua.
2. Kev sim rau kev qaug zog
Siv lub tshuab ntsuas kev ua kom qaug zog, zoo li R-R lub tshuab ntsuas, kom pom tias qhov ntev npaum li cas thaum lawv nyob rau hauv lub voj voog. Piv txwv li, aviation fasteners yuav tsum tau mus txog 10 lub voj voog ntawm kev kuaj, thiab qhov tawg ntawm kev nthuav tawm yuav tsum tsawg dua 1 × 10⁻⁶ mm / voj voog.
3. Kev ntsuam xyuas rau hardness
Koj tuaj yeem siv Vickers hardness tester (HV) lossis Rockwell hardness tester (HRC) kom paub seb cov khoom nyuaj npaum li cas. Piv txwv li, turbine blades xav tau cov khoom ua los ntawm Inconel 718 uas muaj tus nqi HV ntawm 450-500 thaum luam tawm nrog DMLS thev naus laus zis.
4, Kev Ua Lag Luam Kev Ua Lag Luam: Kev Nyuaj Siab hauv Standardization thiab Kev Txawj Ntse
1. Tsim ib lub teb chaws tus qauv
Peb lub teb chaws tus qauv rau 3D luam ntawv (GB / T 35351-2025, GB / T 45675-2025, thiab GB / T 45667-2025) uas tau pib siv rau lub Cuaj Hlis 2025 muab kev lag luam ib txoj hauv kev los txiav txim siab zoo. Piv txwv li, GB / T 45675 hais tias yuav ua li cas los ntsuas qhov roughness ntawm SLM qhov chaw thiab xav kom Ra tus nqi nrhiav kom rov ua tau qhov yuam kev tsawg dua lossis sib npaug li 5%.
2. Siv cov cuab yeej tshawb nrhiav ntse
Kev siv tshuab kev kawm thiab kev txawj ntse txawj ntse yog ua kom pom tau zoo dua. Piv txwv li, Nanyang Technological University tau tsim kho qhov muag duab -raws li siv lead ua orientation tsom xam qhov system uas tuaj yeem ua tiav qhov kev ntsuam xyuas microstructure ntawm titanium alloy qhov chaw hauv 15 feeb thiab tus nqi tsuas yog 1/10 ntawm SEM txoj kev.
3. Kev tswj kom zoo rau tag nrho cov txheej txheem
Cov tuam txhab ua lag luam tau teeb tsa lub kaw - lub voj voog rau "tsim ntawv luam tawm cov lus tawm tswv yim." Piv txwv li, GE Aviation tau ntxiv ib qho hauv -situ saib xyuas rau nws cov khoom siv SLM. Qhov no cia lawv hloov lub laser siv thiab scanning ceev nyob rau hauv lub sij hawm ntawm lub sij hawm, uas tau txo qis qhov tsis ua hauj lwm ntawm lub Cheebtsam ntawm 8% mus rau tsawg tshaj li 0.5%.