Peb puas yuav tsum tau ua qhov kev kho saum npoo dua tom qab tshem tawm cov kev txhawb nqa?

Ib, Hom thiab yog vim li cas rau nto flaws tom qab tshem tawm cov kev them nyiaj yug
1. Mechanical kev puas tsuaj: Kev puas tsuaj rau saum npoo los ntawm kev sib cuag nrog lub cuab yeej
Txhawm rau tshem tawm cov kev txhawb nqa hlau, tib neeg feem ntau siv cov cuab yeej xws li pliers, sib tsoo lub log, lossis lasers. Piv txwv li, thaum tshem tawm cov qauv kev txhawb nqa ntawm cov cua txias sab hauv ntawm lub dav hlau cav turbine hniav, siv cov cuab yeej siv tawv hlau tuaj yeem tsim khawb ntawm qhov chaw ntawm titanium alloy substrate uas yog 0.1-0.3mm tob. Zhejiang Tuobo tus neeg hlau txhawb nqa lub zog ua kom lub zog sib tiv tauj li ntawm 0.1N siv lub zog tawm tswv yim tswj, txawm li cas los xij hauv zos indentations tseem tuaj yeem tshwm sim vim qhov sib txawv ntawm cov khoom tawv.
2. Lub tshav kub- thaj tsam cuam tshuam yog thaj chaw uas cov laser txiav tawm tom qab kev ntxhov siab.
Thaum laser txiav kev txhawb nqa, cov khoom nto tuaj yeem kub txaus los tsim kom muaj qhov kub ntxhov (HAZ). Piv txwv li, npib tsib xee-raws li siab- kub alloys yuav poob 20% mus rau 30% ntawm lawv hardness tom qab laser txiav, thiab microcracks yuav tsim. Cov ntaub ntawv sim rau ib hom foob pob hluav taws cav nozzle qhia tau hais tias qhov tawg tawg ntawm lub laser- txiav nto, tsis muaj kev kho cua sov, yog peb zaug ntau dua li ntawm lub substrate thaum kuaj qaug zog.
3. Powder residue: ib qho teeb meem nrog kev tu cov txheej txheem nyuaj
Thaum lub sij hawm cov hmoov txaj melting (PBF) txheej txheem, qhov chaw nruab nrab ntawm cov qauv txhawb nqa thiab lub substrate yuav tuav cov hmoov uas tseem tsis tau yaj. Cov ntaub ntawv tshawb fawb ntawm kev cog lus kho mob pom tau tias thaum lub thickness ntawm cov hmoov seem ntawm lub osseointegration interface ntawm lub khob acetabular yog ntau tshaj 0.1 hli, qhov ua tau zoo ntawm cov pob txha kev koom ua ke poob los ntawm 40% . 5% mus rau 10% ntawm cov hmoov tsis tuaj yeem tshem tawm txawm tias muaj kev vibration tshuaj ntsuam thiab airflow tu. Qhov no yog vim electrostatic adsorption los yog mechanical jamming.
2, Qhov xav tau rau kev kho mob sab nraud: tus qauv txiav txim siab raws li nws yuav siv li cas
1. Nyob rau hauv aerospace teb, kev ua tau zoo yog guaranteed nyob rau hauv tiag tiag tej yam kev mob.
Qhov thib ob qhov chaw kho mob yog ib qho yuav tsum tau ua rau cov combustion chambers rau aircraft xyaw. Cov channel ntws sab hauv yuav tsum muaj peev xwm tswj tau qhov kub ntawm 1500℃thiab siab ntawm 10 MPa. Tom qab kev txhawb nqa raug tshem tawm, qhov roughness saum npoo (Ra) yuav tsum tau khaws cia qis dua 0.8 μm. Ib lub tuam txhab siv "sandblasting + electrolytic polishing" txheej txheem combo:
Kev kho Sandblasting: Siv 200 mesh alumina xuab zeb hais kom txo tus nqi Ra ntawm 6.3 μ m rau 1.6 μ m. Qhov no tsim cov txheej txheem kev ntxhov siab uas yog 0.5-1 μ m tuab thiab ua kom qaug zog ntawm 15%.
Electrolytic polishing: Los ntawm kev siv cov txheej txheem electrochemical kom yaj cov phosphate -raws li kev daws teeb meem, Ra tus nqi qis dua rau 0.4 μm, thiab cov microcracks nyob rau hauv qhov chaw los ntawm sandblasting raug tshem tawm.
2. Kev kho mob cog: cov qauv tseem ceeb rau biocompatibility
Qhov zoo ntawm qhov chaw ntawm titanium alloy orthopedic implants muaj kev cuam tshuam ncaj qha rau lawv zoo li cas nrog cov pob txha. Yog tias tus nqi Ra ntawm qhov chaw tom qab kev txhawb nqa raug tshem tawm ntau dua 1.6 μm, kev sim tau qhia tias qhov adhesion tus nqi ntawm osteoblasts poob los ntawm 60%. Ib lub tuam txhab siv peb - cov txheej txheem ntawm "cov tshuab polishing + acid etching + anodizing":
Mechanical polishing: Siv 600 grit sandpaper kom tshem tawm cov khib nyiab pov tseg thiab khaws tus nqi Ra ntawm lossis qis dua 3.2 μ m.
Kev kho mob nrog cov kua qaub etching: Etch nyob rau hauv ib tug tov ntawm hydrofluoric acid thiab nitric acid rau 10 feeb los tsim ib tug microporous qauv uas yog 5-10 μm tuab thiab pab cov pob txha hlwb proliferate.
Anodizing: Tsim TiO ₂ oxide zaj duab xis uas yog 200nm tuab ntawm 18V. Qhov no ua rau saum npoo tsib zaug tiv taus corrosion thiab muab nws cov xim kub, uas ua rau nws siv tau ntau dua hauv kev kho mob.
3. Muaj pwm: nrhiav qhov sib npaug ntawm qhov muaj txiaj ntsig thiab tus nqi
Hauv kev txhaj tshuaj pwm, qhov kev kho mob thib ob yuav tsum nrhiav kev sib haum xeeb ntawm tus nqi thiab kev ua haujlwm. Ib lub tuam txhab tshwj xeeb rau kev tshem tawm kev txhawb nqa los ntawm aluminium alloy pwm tom qab kev kho mob:
Kev daws teeb meem ua haujlwm rau kev lag luam: Kom haum rau cov kev xav tau ntawm cov yas molding, tsuas yog kev kho sandblasting (Ra nqi tsawg dua lossis sib npaug li 3.2 μ m) ua tiav. Qhov no txo ​​tus nqi ib thooj los ntawm 40%.
Kev daws teeb meem nrog kev ua haujlwm siab: Ua kom CNC precision machining (Ra tus nqi <0.8 μ m), uas yog qhov zoo rau pwm qhov chaw uas yuav tsum tau ci los yog ntshiab, tab sis nws yuav siv sij hawm peb zaug ntev li ua.
3, Technological Evolution: Cov kauj ruam loj rau pem hauv ntej hauv automation thiab kev txawj ntse
1. Ib tug neeg hlau los pab lub kaw lus precision kiv puag ncig
Lub rau -axis neeg hlau system los ntawm Zhejiang Tuobo siv 3D pom qhov chaw thiab yuam kev tawm tswv yim tswj kom tshem tawm cov kev txhawb nqa nrog qhov tseeb tsawg dua ib millimeter. Nyob rau hauv cov ntaub ntawv ntawm ib lub tuam txhab aviation, thev naus laus zis txiav cov kev txhawb nqa seem ntawm turbine hniav los ntawm 12% mus rau 0.5% thiab tseem txo qis kev puas tsuaj los ntawm kev cuam tshuam ntawm phau ntawv.
2. Kev sib xyaw ua ke ntawm ntau hom kev siv tshuab
Lub tuam txhab German EOS ua "de support polishing" cov khoom siv sib xyaw ua ke, uas ua magnetorheological polishing (MRF) txoj cai tom qab kev txhawb nqa raug tshem tawm. MRF tuaj yeem ua rau qhov chaw smoother ntawm 3.2 μm rau 0.1 μm hauv qis dua 10 feeb yam tsis muaj kev puas tsuaj rau subsurface. Qhov no ua tau vim tias tsis yog -Newtonian kua tau tuab dua thaum lawv raug txiav.
3. Predictive optimization ntawm digital ntxaib tech
Siemens tau tsim NX MCD qhov kev pab cuam, uas tuaj yeem qhia tias qhov kev ntxhov siab ntawm qhov chaw hloov pauv li cas tom qab kev txhawb nqa raug tshem tawm. Ib tus qauv ntxaib digital tau siv los nrhiav qhov zoo tshaj plaws laser txiav txoj kev rau lub cav hniav. Qhov no ua rau lub tshav kub cuam tshuam cheeb tsam 0.5mm dav es tsis txhob 0.2mm dav thiab ob npaug rau lub neej qaug zog.