TC4 titanium alloy yog dav siv nyob rau hauv aerospace, tshuaj, biomedical thiab lwm yam tseem ceeb teb vim nws corrosion kuj, siab tej lub zog, zoo toughness thiab zoo heev biocompatibility. Txawm li cas los xij, kev ua tiav ntawm TC4 titanium alloy nyob rau hauv cov txheej txheem ib txwm muaj qhov tsis zoo ntawm kev siv cov khoom siv tsawg, cov nqi tsim khoom siab thiab nyuaj deformation, uas txwv tsis pub tshaj tawm thiab siv TC4 titanium alloy, thiab qhov tshwm sim ntawm 3D tshuab luam ntawv yuav txhim kho qhov teeb meem no. .
3D luam ntawv, uas nws lub npe scientific yog additive manufacturing, originated nyob rau hauv 1990s sai prototyping technology. Qhov txawv ntawm qhov kev tsim tawm, nws siv lub hauv paus ntsiab lus sib cais / stacking, kev siv tshuab computer los ua cov txheej txheem ntawm 3D khoom qauv txiav rau hauv cov txheej nyias nyias nrog cov tuab tuab, 3D tshuab luam ntawv rau kev ua cov ntaub ntawv tshawb xyuas thiab kev ua haujlwm tas mus li. ua ntawm txhua daim nyias nyias thiab stacking, ua raws li los ntawm kev tsim cov khoom ntom ntom. 3D tshuab luam ntawv yog tsim rau kev ua txhua yam ntawm cov khoom thiab muaj tus nqi siab ntawm kev siv cov khoom siv, tus nqi qis, 3D tshuab luam ntawv yog tsim rau kev ua cov khoom ntawm txhua yam duab, thiab muaj qhov zoo ntawm kev siv cov khoom siv siab, tus nqi qis, kev ua haujlwm siab. thiab kev sib koom ua ke siab, thiab lwm yam. Nws yog tshwj xeeb tshaj yog tsim rau kev tsim ntawm TC4 titanium alloy.3D tshuab luam ntawv feem ntau suav nrog kev xaiv lasermelting (SLM), laser engineered net shaping (LENS) thiab electron beam melting (EBM). electron beam melting (EBM). Ntawm lawv, EBM molding muaj ntau qhov zoo dua piv nrog rau lwm ob lub tshuab molding: (1) EBM molding txais cov kab hluav taws xob ua lub zog, tsis muaj kev xav hauv kev tsim khoom thiab kev siv hluav taws xob siab; (2) EBM molding yog nqa tawm nyob rau hauv ib puag ncig lub tshuab nqus tsev, uas tuaj yeem zam kev sib kis ntawm lwm yam hauv huab cua; (3) EBM molding yog qhov ua tau zoo dua li lwm cov tshuab moulding vim muaj lub zog siab thiab siab scanning ceev; (4) EBM molding yog qhov zoo dua li lwm yam molding technologies vim muaj lub zog siab thiab siab scanning ceev; (5) EBM molding muaj txiaj ntsig zoo dua li lwm cov tshuab molding. Siab; (4) EBM molding qhov chaw muaj kev ntxhov siab tsawg dua thiab tsis tas yuav tsum tau kho cua sov tom qab, txuag hluav taws xob.
Cov txiaj ntsig kev tshawb fawb hauv tsev thiab txawv teb chaws rau EBM tsim TC4 titanium alloy qhia tias: EBM tsim TC4 titanium alloy macroscopic lub koom haum rau kev loj hlob ntawm columnar crystals raws lub tsev kev taw qhia, microstructure rau + txheej txheej, qhov ceev ntawm cov cua txias, qhov yooj yim dua kom tau txais ib qho zoo. microstructure. Optimization ntawm cov txheej txheem tsis muab EBM qhov zoo tshaj plaws lub zog ceev, uas tuaj yeem zam qhov tsim ntawm ntau qhov tsis xws luag. Kev kho HOP tom qab tseem tshem tawm cov porosity thiab homogenises microstructure, uas txhim kho cov khoom qaug zog, txawm hais tias nws ua rau cov nplej coarsening, qis dislocation ceev thiab me ntsis ntawm cov alloy zog. Kev ua kom zoo ntawm qhov tsis sib xws ntawm EBM txoj kev tsim, ntxiv los ntawm kev kho raws li kev tsim nyog, tuaj yeem tau txais nrog cov pa casting thiab forging ntawm TC4 titanium alloys nrog cov khoom piv rau EBM txuag cov ntaub ntawv raw, ceev, zoo, yooj yim rau kev tsim cov duab nyuaj. ntawm cov khoom ua haujlwm, thiab yuav maj mam hloov cov kev tsim tawm tam sim no siv hauv aerospace, tshuaj thiab kev kho mob.
