Puas muaj kev txhawb nqa soluble hauv hlau 3D luam ntawv?

1. Technical txoj cai: Sacrificial anode rau electrochemical breakthrough
Txoj kev sacrificial anode tiv thaiv, uas siv qhov sib txawv ntawm lub peev xwm ntawm ob lub hlau nyob rau hauv cov electrolyte ua rau xaiv corrosion, yog lub hauv paus rau soluble kev them nyiaj yug technology. Nyob rau hauv hlau 3D luam ntawv, cov txheej txheem no yog siv nyob rau hauv ib txoj kev tshiab los cais lub cev ntawm cov qauv txhawb:
Xaiv cov khoom tsim nyog: Siv cov hlau uas tsis xeb (xws li stainless hlau) rau cov khoom thiab cov hlau uas xeb (xws li qis- cov pa roj carbon steel) rau cov kev txhawb nqa. Piv txwv li, pab pawg Arizona State University tau siv cov khoom sib xyaw ntawm AISI 431 stainless hlau (rau qhov chaw) thiab Metco 91 cov pa roj carbon tsawg (rau kev txhawb nqa) kom cov kev txhawb nqa yaj hauv nitric acid tsis ua mob rau qhov chaw.
Electrochemical ceev- nce: Siv cov nitric acid yooj yim ua rau corrosion tshwm sim qeeb dua (nws tsuas yog yaj 1.4 hli carbon steel hauv 10 teev), tab sis ntxiv cov pa npuas ua rau nws tshwm sim 6 zaug sai dua. Oxygen rhuav tshem cov txheej txheej passivation rau ntawm cov pa roj carbon steel, ua kom txoj kev txhim kho corrosion tam sim no, thiab ua kom tiav qhov kawg ntawm 7 hli carbon steel hauv 6 teev.
Tswj uas yog xaiv: Rau kev txhawb nqa cov ntaub ntawv, electrolytes yuav tsum muaj ib tug solubility selectivity ntawm ntau tshaj 100: 1. Piv txwv li, nitric acid noj tam sim ntawm carbon hlau ntau dua 1000 lub sij hawm sai dua li nws ua ntawm stainless hlau, uas txhais tau hais tias lub cev ntawm cov khoom tsis raug mob.
2. Compatibility ntawm cov ntaub ntawv: Metallurgical txwv thiab kev kho
Txhawm rau siv cov kev txhawb nqa soluble hauv kev lag luam, ob qhov teeb meem loj hauv cov ntaub ntawv tshawb fawb yuav tsum tau daws:
Metallurgical compatibility: Cov xwm txheej hauv qab no yuav tsum tau ntsib los ntawm ob qho tib si cov khoom txhawb nqa thiab cov khoom siv:
Crystal structural zoo sib xws: txhawm rau tiv thaiv kev cuam tshuam kev ntxhov siab uas tuaj yeem tshwm sim thaum lub thermal expansion coefficients txawv. Piv txwv li, qis- carbon steel thiab stainless hlau ob leeg muaj lub ntsej muag - nruab nrab cubic qauv thiab thermal expansion coefficient sib txawv ntawm tsawg dua 10%. Qhov no txhais tau tias lawv tuaj yeem tswj qhov kub thiab txias hloov thaum lub sij hawm hlau 3D luam ntawv.
Nyob deb ntawm cov sib txuas sib txuas: Qee cov khoom sib xyaw ua ke, xws li titanium thiab aluminium alloys, feem ntau yuav ua rau qhov kub thiab txias. Txhawm rau zam qhov no, koj yuav tsum tswj cov txheej txheem tsis ua haujlwm lossis tsim cov txheej txheem nruab nrab.
Kev nthuav dav ntawm cov khoom siv: Cov kev tshawb fawb tam sim no tau pom tias cov hlau tsis muaj steel - carbon steel system yog ua tau, thiab kev sib txuas ntxiv ntawm cov ntaub ntawv yuav tsum tau ua yav tom ntej.
High -kub alloy: Inconel 718 thiab tej yam khoom siv txiab anode tuaj yeem siv ua ke los ua qhov kub kawg rau cov tshuab dav hlau.
Titanium alloy: Los ntawm kev nplua - kho cov qauv electrolyte, Ti6Al4V thiab soluble kev txhawb nqa tuaj yeem ua haujlwm ua ke.
Cov hlau refractory: Txhawm rau tshem tawm kev txhawb nqa los ntawm siab - melting- taw tes hlau zoo li tungsten thiab tantalum, peb yuav tsum tsim cov tshuab hluav taws xob uas ua haujlwm ntawm qhov kub thiab txias.
3, Kev ua kom zoo tshaj plaws: ua kom dhia los ntawm kev sim mus rau cov kab ntau lawm
Txhawm rau kom ua tiav cov txheej txheem kev txhawb nqa soluble, peb cov txheej txheem tseem ceeb yuav tsum tau kov yeej:
Txhim kho kev ua haujlwm ntawm corrosion: Pulse electrochemical technology: Nws pab tshem tawm cov khoom siv corrosion thiab nres cov txheej txheem passivation los ntawm kev hloov tam sim no rau thiab tawm. Piv txwv li, pulsed voltage tuaj yeem ua rau carbon steel corrode peb zaug sai dua.
Kev pab Ultrasonic: Ntxiv ultrasonic tsis rau cov electrolyte speeds loj hloov los ntawm kev ua cavitation, uas txo cov corrosion lub sij hawm los ntawm ntau tshaj 50%.
Kev tswj qhov zoo ntawm qhov chaw:
Cov txheej txheem rau circulating electrolytes: Pumping circulating electrolytes ua kom lub ntsej muag roughness tsis zuj zus los ntawm kev tiv thaiv cov concentration hauv zos tsis sib xws. Piv txwv li, cov tshuaj tua kab mob tuaj yeem ua rau cov khoom tsis zoo, los ntawm Ra10 μ m rau Ra2 μ m.
Polishing tom qab kev kho mob: Electrochemical corrosion, nrog rau tsis yog - txoj kev sib cuag xws li magnetorheological polishing, tuaj yeem ua rau saum npoo zoo li daim iav (Ra<0.1 μ m).
Automated integration:
Cov txheej txheem rau kev nrhiav khoom hauv online: Muaj CT tso cai rau tiag tiag - lub sijhawm saib xyuas ntawm kev txhawb nqa cov khoom seem thiab kev hloov pauv hloov pauv ntawm qhov tsis muaj corrosion. Piv txwv li, GE Additive's Smart Clean system tuaj yeem nrhiav cov ntsiab lus txhawb nqa thiab txhim kho kev faib tawm tam sim no.
Kaw lub voj tswj: Siv cov txheej txheem kev kawm tshuab los tsim cov qauv uas kwv yees tus nqi ntawm corrosion kom cov txheej txheem tsis tuaj yeem hloov pauv tau. Tom qab ib lub tuam txhab dav hlau siv cov txheej txheem no, tus nqi ntawm kev txhawb nqa tshem tawm tau nce los ntawm 70% mus rau 99%.
4. Muaj daim ntawv thov kev cia siab: los ntawm cov txheej txheem nyuaj rau ntau lawm
Nyob rau hauv tiag tiag - ntiaj teb no ntau lawm, soluble kev them nyiaj yug tshuab tau qhia tias yuav pab tau heev:
Nyob rau hauv aerospace teb, GE Aviation siv soluble kev them nyiaj yug luam ntawv los ua lub Inconel 718 combustion chamber. Qhov no txiav lub sijhawm nws siv los tshem tawm cov kev txhawb nqa los ntawm 40 teev mus rau 8 teev, thiab tsis muaj cov cim ntawm kev puas tsuaj rau saum npoo.
Lub tuam txhab satellite tau ua tiav cov khoom siv hluav taws xob sib txuas nrog 2000 microchannels siv cov cuab yeej txhawb nqa soluble. Cov channel tsuas yog 0.5 hli dav thiab cov hmoov seem seem tsawg dua 0.1%.
Kev kho mob implants: Personalized hip joint: Johnson&Johnson Medical ntiav soluble support los luam Ti6Al4V hip pob qij txha nrog ib tug nto roughness ntawm Ra0.8 μ m. Qhov no ua tau raws li cov qauv kev cog hniav orthopedic thiab zam cov teeb meem nrog cov tawv tawv uas tuaj yeem tshwm sim nrog kev ua haujlwm ib txwm muaj.
Kev cog hniav cog hniav: Ib lub tuam txhab kho hniav tau txiav lub sij hawm nws yuav siv sij hawm los luam cov cog cog los ntawm peb hnub mus rau ib hnub uas siv cov cuab yeej txhawb nqa soluble. Qhov no tau txiav cov nqi los ntawm 40%.
Ua cov pwm: Lub pwm hloov tau txias yog tsim los ntawm kev sib xyaw pwm hlau (xws li H13) nrog kev txhawb nqa soluble. Qhov no tso cai rau koj luam tawm cov txheej txheem txias txias. Thaum cov txheej txheem no tau siv ntawm qee lub tsheb pwm cog, pwm qhov ua kom txias tau nce li 30% thiab lub sijhawm nws siv los ua pwm poob los ntawm 25%.