Porous Tantalum Rods

Cov kws tshawb fawb tau lees paub los ntawm cov kab lis kev cai ntawm tes uas osteoblasts muaj cov tshuaj tiv thaiv nrog cov hlau ntshiab tantalum thiab tias tantalum yog hlau nrog rau lub sij hawm ntev biocompatibility. Nyob rau hauv xyoo tas los no, tantalum ntxeem tau hlau ua los ntawm tantalum tau dav siv nyob rau hauv lub tshav pob ntawm orthopaedics. Nrog rau tag nrho kev sib txuas porosity ntawm 75 mus rau 80 feem pua ​​​​thiab qhov nruab nrab qhov pore loj ntawm 430 μm, tantalum implants ua tiav cov kev kho mob zoo nrog cov pob txha thiab tsim nyog rau cov ntaub so ntswg loj hlob sai hauv tib neeg lub cev. Txawm li cas los xij, vim muaj kev txwv ntawm cov txheej txheem kev npaj thiab ua tiav, cov ntswj tantalum implants tam sim no muaj ib qho pore channel, thiab cov qauv pore tsis sib xws thiab tsis tuaj yeem tswj tau; Kev faib tawm ntawm cov qauv pore tsis zoo ib yam thiab qhov pore txuas tsis zoo, ua rau cov khoom siv tsis zoo ntawm cov pob txha tantalum implants txuam nrog tib neeg cov pob txha thiab cov pob txha tsis zoo thiab kev ua haujlwm osseointegration, uas txwv tsis pub lawv daim ntawv thov thiab kev ua haujlwm hauv thaj chaw orthopedic.

Peb lub Hoobkas muaj qhov ntxeem tau tantalum pas nrig, uas belongs rau thaj tsam ntawm tib neeg cog cov ntaub ntawv thev naus laus zis. Qhov no ntxeem tau tantalum pas nrig muaj ib tug threaded seem thiab ib tug multi-theem pore seem; cov threaded seem muaj qhov ntev ntawm 30 mm thiab ib txoj kab uas hla ntawm 14 m, thaum lub multi-stage pore seem muaj ib tug ntev ntawm 70 mm thiab ib txoj kab uas hla ntawm 10 mm. Cov threaded seem thiab multi-theem pore seem yog nkag los ntawm peb-dimensional ncig pore; txoj kab uas hla ntawm peb-dimensional ncig pore ranges ntawm 100 mus rau 1000 μm, thiab lub pore txoj kab uas hla ntawm lub voj pore yog faib nyob rau hauv ib tug gradient los ntawm me me mus rau loj los ntawm threaded seem mus rau ntau theem pore seem.

Cov pas nrig muaj kev faib tawm ntawm peb sab ntawm qhov pores, thiab kev faib tawm ntawm qhov pores ntawm tantalum pas nrig yog ib yam thiab tswj tau, uas txhawb nqa osteoconductivity thiab osseointegration, thiab cov qauv ntawm lub qhov hws tuaj yeem hloov kho, thiab cov khoom siv kho tshuab xws li modulus. ntawm elasticity tuaj yeem hloov kho, uas yog ze rau cov khoom ntawm tib neeg lub cev pob txha, tsis muaj teeb meem ntawm kev ntxhov siab tiv thaiv. Ntau cov ntaub ntawv qhia tau hais tias peb cov ntswj tantalum rods muaj ib tug compressive zog ntawm 120-180 MPa, ib tug modulus elasticity ntawm 10-20 GPa, thiab ib tug porosity ntawm 75-85 feem pua.

Cov hauv qab no yog cov kauj ruam tshwj xeeb.

(1) Tsim ib tug qauv peb-seem ntawm cov ntxeem tau tantalum pas nrig hauv peb-dimensional software qauv.

(2) Tom qab luam tawm kev taw qhia ntawm tus qauv peb-seem tau txais thiab teeb tsa lub substrate, txheej hais tias peb-seem qauv, hais tias txheej txheej suav nrog faib cov qauv peb-seem rau hauv ntau txheej txheej ntawm peb-dimensional qauv ntawm tib lub thickness raws li luam tawm. kev taw qhia, txuag thiab importing ib cov ntaub ntawv nyob rau hauv cov ntaub ntawv sib xws.

(3) Ntshuam cov ntaub ntawv tau txais mus rau hauv lub tshuab luam ntawv 3D rau 3D luam ntawv kom tau txais tantalum rods ntxeem tau.

Ib tug 3D qauv ntawm lub saum toj no ntxeem tau tantalum pas nrig yog tsim nyob rau hauv ib tug 3D software qauv. Tsis muaj kev txwv tshwj xeeb rau txoj hauv kev kom tau txais 3D qauv, nws yog qhov txaus los siv 3D qauv tsim software paub rau cov neeg txawj ntse hauv kev kos duab, tsuav nws muaj peev xwm tsim tau tus qauv 3D uas zoo sib xws nrog hais tias ntxeem tau tantalum. rod.

After obtaining the three-dimensional model, the printing direction of the three-dimensional model is determined and the substrate is set, the three-dimensional model is then layered, which consists of dividing the three-dimensional model into multiple layers of the same thickness along the printing direction, saving and importing the file in the corresponding format.

Tsis muaj kev txwv tshwj xeeb ntawm cov kev taw qhia luam tawm, nws yog qhov txaus uas cov ntswj tantalum rods tau luam tawm hauv qhov xwm txheej zoo meej. Tsis muaj kev txwv tshwj xeeb ntawm cov khoom siv ntawm lub substrate, txhua yam khoom siv tuaj yeem siv tau, tshwj xeeb, piv txwv li, titanium.

Lub hauv paus ntsiab lus ntawm 3D luam ntawv yog nteg ib txheej ntawm tantalum hlau hmoov ntawm lub substrate nrog ib tug squeegee, ces irradiate cov hmoov sai nrog ib tug laser beam nyob rau hauv kev tswj ntawm ib tug scanning oscilloscope nyob rau hauv ib txoj kev, ua rau nws yaj thiab solidify, sib sau. txheej txheej metallurgical cladding, tom qab ntawd txo lub substrate rau tib qhov siab raws li lub thickness ntawm ib txheej tso thiab nteg ib txheej ntawm hmoov rau laser scanning processing, rov ua cov txheej txheem no kom txog thaum kawg ntawm tag nrho cov tantalum pas nrig sib sau.

Tom qab txheej txheej txheej, lub thickness ntawm txhua txheej yog nyiam dua<0.3 15=" 45=" mm.=" 3d=" printing=" parameters=" preferably=" include=" laser=" and=" substrate=" temperature.=" "="" the="" material="" is="" a="" spherical="" tantalum="" powder="" of="" to="" has="" purity="">99.9 feem pua, cov ntsiab lus oxygen ntawm<500 a="" sphericity="" of="">90 thiab Hall flow rate ntawm<10s>

Ntawm cov laser tsis, qhov zoo ntawm qhov pom pom qhov zoo dua yog 135 μm, tus nqi yog qhov zoo dua 150 mm / s, txoj kab sib nrug yog 0.15 hli thiab lub zog zoo dua 250 w.

Lub substrate kub yog qhov zoo dua> 60 degree, zoo dua 100 degree.

Tsis muaj kev txwv tshwj xeeb ntawm tus qauv ntawm lub tshuab luam ntawv 3D, txhua tus qauv siv tau. Zoo dua, lub tshuab luam ntawv 3d nrog tus qauv naj npawb fs271m yog siv.

Cov txheej txheem siv huv tantalum hmoov zoo li cov khoom siv rads rau 3D pas nrig ntawm cov pas nrig ta thiab ua kom muaj zog tshaj plaws rau cov khoom siv tau zoo tshaj plaws; ua ke nrog qhov tseeb tias sab nrauv ntawm cov ntxeem tau ta rods muaj qhov puag ncig nrog qhov gradient pore loj, biocompatibility ntawm cov ntxeem tau tantalum rods yog txhim kho.

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