Cov txheej txheem geometric ntawm cov pwm puas yuav cuam tshuam rau kev luam ntawv zoo?

Ib, Qhov nyuaj ntawm kev luam ntawv kom raug nrog cov duab geometric nyuaj
1. Lub precision ntawm cov qauv tsim thiab slicing
Qauv slicing processing yuav tsum ua kom meej meej rau cov qauv geometric nyuaj uas muaj cov ntu me me, cov phab ntsa nyias, lossis cov khoom uas dai. Piv txwv li, yog tias pwm phab ntsa thickness tsawg dua 0.5 hli, cov slicing software yuav tsim interlayer misalignment vim nws tsis muaj precision txaus. Tsis tas li ntawd, yog tias cov qauv raug tshem tawm tsis tsim thiab txhawb kom raug, nws tuaj yeem tawg yooj yim thaum luam ntawv. Bolite nws tus kheej tsim ib qho slicing algorithm rau pwm project rau lub dav hlau cav hniav uas khaws cia qhov tsawg kawg nkaus feature loj mus rau hauv 0.3 hli. Lawv kuj tau siv cov cuab yeej txhawb nqa hloov kho kom nce qhov kev vam meej ntawm kev luam tawm qhov raug tshem tawm mus rau 98%.

2. Lub shrinkage ntawm cov ntaub ntawv thiab kev ntxhov siab los ntawm tshav kub
Lub shrinkage tus nqi ntawm cov ntaub ntawv thaum lub sij hawm melting solidification txheej txheem muaj ib tug ncaj qha cuam tshuam rau lub dimensional raug ntawm hlau 3D luam ntawv. Piv txwv li, Inconel 718, uas yog ib qho alloy ua los ntawm npib tsib xee, muaj thermal expansion coefficient ntawm 12.5 × 10⁻⁶ / degree. Thaum luam ntawv pwm nrog txoj kev nkhaus, qhov tsis sib xws shrinkage thiab warping deformation yuav tshwm sim vim qhov kub ntawm qhov sib txawv ntawm qhov sib txawv. Los ntawm kev ntxiv cov qauv kev ntxhov siab thermal rau slicing software nyob rau hauv ib tug muab automotive tivthaiv pwm rooj plaub, lub shrinkage yuam kev poob los ntawm 0.2mm mus rau 0.05mm. Qhov no ua rau cov pwm raug ntau dua thaum nws muab tso ua ke.

3. Qhov tseeb ntawm cov khoom siv thiab kev tswj ntawm nws txoj kev txav
High-kawg industrial- qib 3D tshuab luam ntawv siv lub tshuab hluav taws xob linear tsav uas tuaj yeem nrawm txog li 5g thiab txoj haujlwm nrog qhov tseeb ntawm ± 10 μm. Tab sis cov duab geometric nyuaj ua rau muaj kev ntxhov siab ntau npaum li cas cov cuab yeej tuaj yeem teb tau sai. Piv txwv li, thaum luam ntawv pwm nrog kauv ntws raws, lub nozzle yuav tsum nyob rau ntawm txoj kev yog txawm tias thaum tsiv ceev. Yog tias nws tsis yog, qhov ntws raws 'tus ntoo khaub lig- ntu qhov ntev tuaj yeem hloov pauv tau yooj yim. Cov txheej txheem kaw - voj tswj tau siv nyob rau hauv kev kho mob pwm qhov project kom lub nozzle trajectory yuam kev nyob rau hauv ± 5 μ m, uas ua kom paub tseeb tias cov kab inch nyob tib yam.

2, Txoj kev los txhim kho cov txheej txheem rau cov qauv geometric nyuaj
1. Optimizing cov duab thiab ua kom nws sib zog
Siv algorithms, topology optimization tshuab tuaj yeem nrhiav txoj hauv kev zoo tshaj plaws los faib cov khoom xyaw, tshem tawm cov khoom ntxiv thaum tseem ua kom cov pwm muaj zog. Piv txwv li, topology optimization txiav qhov hnyav ntawm qhov muab tuag-casting pwm los ntawm 40% thiab ntxiv cov dej txias rau hauv cov qauv sab hauv, uas ua rau nws 25% ua kom txias dua. Tsis tas li ntawd, kev siv cov lattice moj khaum tau ua rau nws muaj peev xwm tsim cov khoom uas sib dua. Ib qho 30% ntxeem tau titanium alloy lattice nyob rau hauv kev sib txuas pwm. Qhov no txo ​​qis ntawm kev siv cov khoom siv los ntawm 60% thaum khaws cov rigidity.

2. Tshuab rau ntau- laser kev sib koom tes scanning
Rau cov pwm loj thiab nyuaj, ntau- laser kev sib koom tes scanning tuaj yeem ua kom luam ntawv sai dua thiab raug dua. Lub Platinum BLT-S800 muaj 8 lub lasers uas cia koj pwm cov khoom mus txog 800 × 800 × 1000mm ³. Nws kuj tseem ua kom qhov kev sib tshuam sib txuas yuam kev mus rau hauv ± 0.03mm. Nyob rau hauv lub zog tshiab lub tsheb roj teeb tais pwm qhov project, ntau- laser kev sib koom tes tshuab tau txiav lub sij hawm luam tawm ntawm 72 teev mus rau 24 teev. Qhov ntev kam rau ua kuj tau tshaj aviation qib qauv ntawm ± 0.05mm.

3. Saib xyuas hauv qhov chaw thiab kaw - voj tswj
Thaum lub sij hawm luam ntawv, lub hauv -situ soj ntsuam system siv lub koob yees duab infrared, yaj pas dej ua ke sensors, thiab lwm yam khoom siv los sau cov ntaub ntawv tiag - lub sij hawm nrog rau qhov kub thiab txias thiab geometry ntawm lub melt pas dej ua ke. Nyob rau hauv ib qhov project los ua pwm rau lub dav hlau cav cav turbine disc, hauv -situ xyuas qhov system pom cov qauv kub txawv txawv. Lub kaw lus cia li hloov lub zog laser thiab scanning ceev, txo qhov porosity ntawm 0.8% mus rau 0.2%. Qhov no ua rau kom cov pwm qaug zog lub neej.

3, Post- cov txheej txheem txheej txheem ua kom cov txheej txheem nyuaj dua.
1. Kev ntxhov siab thiab kev kho cua sov
Kev kho cua sov yog xav tau rau cov hlau 3D luam ntawv pwm kom tshem tawm cov kev ntxhov siab seem. Lub hardness ntawm H13 cov cuab yeej hlau tuaj yeem mus los ntawm 38HRC mus rau 52HRC tom qab kho nrog kev daws teeb meem ntawm 1050℃thiab tom qab hnub nyoog ntawm 620 degree. Qhov seem stability kuj tuaj yeem nce mus txog 30%. Los ntawm kev txhim kho cov txheej txheem kev kho cua sov hauv cov ntaub ntawv txhaj tshuaj pwm, cov pwm kab noj hniav qhov hloov pauv qhov ntev mus los ntawm 0.15% mus rau 0.05%, uas ua tau raws li cov qauv kev txhaj tshuaj molding optical qib khoom.

2. Machining nrog precision thiab kho qhov chaw
CNC milling tuaj yeem ua cov khoom lag luam nrog qhov loj me tseem ceeb dua. Ib qho kev sib txuas pwm yog tsim los siv 3D luam ntawv thiab CNC sib xyaw, nrog rau qhov sib txawv haum uas tau tswj kom tsis pub dhau 0.005mm, uas yog qib siab tshaj plaws hauv ntiaj teb. Electrolytic polishing thev naus laus zis kuj tseem tuaj yeem ua rau saum npoo tsis zoo, mus los ntawm Ra8 μm mus rau Ra0.2 μm, uas ua tau raws li cov qauv biocompatibility rau kev cog qoob loo.