Vim li cas txhuas zoo tagnrho rau kev siv hlau 3D?
Txhuas hmoov zoo li alsi10mg muaj kev nqus laser zoo rau kev xaiv laser melting (SLM). Lawv qhov ntom ntom tsawg txo cov khoom siv thaum tuav lub zog. Kev ua kev kho cua sov ua kom sov txhim kho cov khoom siv kho tshuab. Complex channels ua tsis tau yooj yim sua nrog tsoos machining tuaj yeem luam tawm. Cov tuam txhab Aerospace loj tam sim no muab cov ntawv luam tawm 3D-luam tawm rau kev ya davhlau.
Txhuas li cas txhuas cov tshuab luam ntawv cuam tshuam cuam tshuam rau cov txiaj ntsig tau tshwm sim?
Laser Fais (150-400 w) thiab scan ceev ({{800-2000 mm \/ s) yuav tsum sib npaug los tiv thaiv cov porosity. Txheej thickness (30-50 μm) cuam tshuam saum npoo ua tiav thiab tsim sijhawm. Preheating lub tsim phaj mus rau 150 degree txo kev ntxhov siab ntau dua. Roj Flow (Argon \/ Nitrogen) tswj ib qho chaw pa oxygen. Parameter optimization yuav ua tiav 99.7% ntom.
Dab tsi tom qab ua tiav kev txhim kho 3D-luam tawm txhuas?
Kub iSostatic nias (duav) tshem tawm sab hauv voids ntawm 500 degree \/ 100MPA. CNC Machining ua tiav nruj heev rau kev zam ntawm qhov chaw tseem ceeb. Tua cov noog kom muaj kev poob qis ua kom 40%. Anodizing muab kev tiv thaiv corrosion thiab cov xim xaiv xim. Tswjhwm zoo suav nrog CT scanning rau sab hauv qhov tsis zoo.
Qhov kev lag luam twg uas tau txais txiaj ntsig ntau tshaj plaws los ntawm txhuas kev tsim khoom?
Aerospace siv cov ntawv luam tawm thiab kev hloov pauv hluav taws xob rau kev txuag hluav taws xob. Automotypes tau tsim tawm 60% sai dua li cov hauv kev. Medical impants tau txais los ntawm cov porous aluminium qauv txhawb kev ua yeeb yam hauv plab. Kev Cai Hlau Ua Haujlwm Qiv Kev Tsim Kev Lom Zem Tsim Kev Nyab Xeeb. Spare Tshooj ntawm kev thov luam ntawv txo cov nqi ua khoom muag.
Yuav ua li cas siv rov ua txhuas ua hauv 3D luam tawm?
Cov txheej txheem tshwj xeeb atomization tsim cov hmoov ntoo kheej los ntawm seem. Rov siv cov hmoov yuav tsum tau hloov dua siab cib qhia (15-45 μm). Cov khoom siv mechanical phim cov nkauj xwb thaum cov kua pa tawm yog<0.1%. Powder reuse cycles are limited to 5-10 times before refreshment. Closed-loop recycling systems achieve 85% material utilization.
