Cov hlau 3D luam ntawv puas tuaj yeem ua tiav daim iav?

1. Txoj hauv paus ntsiab lus: 3D luam ntawv tuaj yeem ua tau raws li qhov xav tau ntawm iav?
Qhov txiaj ntsig tseem ceeb ntawm hlau 3D luam ntawv yog tias nws tuaj yeem ua cov duab nyuaj tam sim ntawd. Txawm li cas los xij, nws thawj qhov chaw roughness (Ra10-50 μ m) yog qhov txawv ntawm daim iav qauv (Ra<0.01 μ m). To get the mirror effect, you need to work together on "printing+post-processing":
Basics ntawm High -Precision Printing
Selective Laser Melting (SLM) thev naus laus zis, piv txwv li, muab cov txheej nyias nyias ntawm 20-60 μm hmoov thiab ib qho chaw laser uas tsuas yog ob peb micrometers dav kom tau txais qhov loj me ntawm ± 20-50 μm. Qhov no ua rau lub hauv paus ruaj khov rau polishing tom qab. Tag nrho cov txheej txheem chaw rau hlau additive manufacturing uas Hanbang Laser thiab Zhongnan Zhicheng ua hauj lwm nyob rau hauv ua ke tau txo tus thawj roughness ntawm turbine hniav rau Ra12 μ m los ntawm kev txhim kho scanning tswv yim thiab tswj txheej thickness. Qhov no ua rau nws muaj peev xwm ua cov iav.
Kev cuam tshuam ntawm cov khoom yam ntxwv
Vim lawv cov coefficient qis ntawm thermal expansion thiab siab tiv thaiv corrosion, titanium alloy, stainless hlau, thiab lwm yam ntaub ntawv tau dhau los ua qhov kev xaiv zoo tshaj plaws rau kev ua daim iav. Piv txwv li, TC4 titanium alloy uas feem ntau siv hauv kev lag luam aerospace tuaj yeem tshem tawm qhov pores siv kub isostatic nias (HIP) tom qab SLM luam ntawv. Qhov no ua rau cov khoom ntom ntom 99.9% thiab ua rau polishing ntau dua.
2. Txoj Kev Txheej Txheem: Saib tag nrho cov txheej txheem, los ntawm kev luam ntawv mus rau mirroring
Rau ib daim iav zoo li, koj yuav tsum mus dhau plaub kauj ruam tseem ceeb: kev sib tsoo ntxhib, zoo sib tsoo, polishing, thiab txheej. Txhua kauj ruam yuav tsum tau ceev faj tswj:
Tshem tawm cov khaubncaws sab nraud povtseg thiab flaws los ntawm ntxhib thiab zoo sib tsoo
Kev sib tsoo tshuab: Siv cov pob zeb diamond sib tsoo log lossis silicon carbide sandpaper kom maj mam tshem tawm cov txheej txheej luam tawm. Piv txwv li, Jialichuang 3D luam ntawv siv automated sib tsoo cov cuab yeej ua rau BJ cov txheej txheem tsis tshua muaj zog, mus los ntawm Ra2.4 μ m mus rau Ra0.8 μ m, thaum khaws tib theem ntawm qhov tseeb.
Chemical etching: Acidic solutions yog siv los xaiv cov txheej txheem yaj ntawm cov kab noj hniav hauv cov kab noj hniav, uas ua rau cov khoom tshem tawm txawm tias. Piv txwv li, ib lub tuam txhab aviation tau siv cov tshuaj etching raws li phosphoric acid los ua kom cov hniav tsis zoo, mus ntawm Ra15 μm mus rau Ra3 μ m.
Polishing: Qhov dhia ntawm sub- daim iav mus rau daim iav
Txhua yam polishing: WENDT peb-txoj kev polishing siv lub pob zeb polishing kom tshem tau cov kev sib tsoo, lub tshuab polishing nruab nrab kom du nto, thiab lub log polishing zoo kom tau daim iav tiav. Piv txwv li, Johnson & Johnson's hip implants muaj qhov roughness ntawm Ra0.05 μm tom qab kev kho mob, uas ua tau raws li cov txheej txheem biocompatibility.
Kev ntxhov siab - polishing dawb yog ua tau nrog electrolytic polishing, uas dissolves me me pob ntawm qhov chaw siv hluav taws xob. Piv txwv li, ib lub npe ntawm cov saib siv nitric acid -raws li electrolyte ua rau 316L stainless hlau rooj plaub tsis ntxhib, mus ntawm Ra0.8 μ m rau Ra0.02 μ m, thiab tib lub sijhawm, nws ua rau cov ntaub ntawv tiv taus corrosion.
Txheej: ob qho kev txhim kho kev ua haujlwm thiab kho kom zoo nkauj
Lub cev Vapor Deposition (PVD): Cov txheej txheem no muab cov txheej txheem nyuaj xws li TiN thiab CrN ntawm daim iav substrates. Lub thickness tuaj yeem tswj tau ntawm 0.5 thiab 2 μm. Qhov no ua rau cov coatings tiv taus hnav thiab ua rau lawv zoo nkauj zoo li kub thiab dub. Piv txwv li, ib lub tuam txhab tsim tsheb tau siv PVD thev naus laus zis los ua kev hloov paddles ntev dua 500,000 zaug.
Chemical npib tsib xee plating: Electroless deposition txheej txheem tsim ib txheej zoo ib yam ntawm cov npib tsib xee ntawm complex nkhaus qhov chaw uas yog 10 mus rau 20 μm tuab. Piv txwv li, ib lub tuam txhab tsim dav hlau tau ua cov roj nozzles peb zaug ntau dua los tiv thaiv corrosion los ntawm kev siv electroless npib tsib xee plating, tab sis tseem ua kom qhov ntev yog nyob rau hauv ± 0.01mm.
3. Siv hauv kev lag luam: Kev siv ntau rau daim iav 3D luam ntawv
Teb ntawm aerospace
Turbine blades, combustion chambers, thiab lwm yam yuav tsum muaj peev xwm tswj tau ob qho tib si kub thiab aerodynamics zoo tib lub sijhawm. Piv txwv li, GE Aviation siv SLM + electrolytic polishing txoj kev los ua rau saum npoo ntawm LEAP cav hniav tsis tshua muaj zog, mus ntawm Ra10 μ m rau Ra0.2 μ m. Qhov no ua rau lub cav 2% roj ntau dua.
Teb ntawm cov cuab yeej kho mob
Orthopedic implants, cov cuab yeej phais, thiab lwm yam yuav tsum tau biocompatible thiab tua kab mob. Piv txwv li, ib lub tuam txhab ua 3D - luam titanium alloy acetabular khob uas muaj qhov roughness ntawm Ra0.03 μm tom qab electrolytic polishing. Qhov no txhais tau hais tias cov kab mob tsis tshua muaj feem cuam tshuam rau nws, thiab qhov kev pheej hmoo ntawm kev kis kab mob tom qab phais yog qis dua.
Hauv cheeb tsam ntawm cov neeg siv khoom siv hluav taws xob
Hinges rau folding cov ntxaij vab tshaus, siab - kawg saib casings, thiab lwm yam yuav tsum yog ob qho tib si lub teeb thiab muaj zog. Piv txwv li, Hanbang Laser ua ib lub titanium alloy pob khawm rau ib lub xov tooj ntawm tes. Nws yog 0.3 hli tuab thiab muaj qhov tawv tawv ntawm HV1200, uas ua tau raws li qhov yuav tsum tau ua ntawm 200,000 fold xeem.