Hauv kev lag luam pom, sintered stainless hlau hlau hmoov lim cov ntsiab lus tau txais txiaj ntsig zoo rau lawv cov kev pom zoo, kev siv tshuab zoo dua, thiab kev pab cuam lub neej ntev. Lawv cov txiaj ntsig tseem ceeb ntawm kev ua tau zoo-siab porosity thiab siab av tuav lub peev xwm- tsis tau ua tiav los ntawm lub caij nyoog tab sis yog qhov tshwm sim ntawm cov txheej txheem tsim khoom raug thiab tshwj xeeb. Tsab ntawv xov xwm no muab cov lus qhia hauv - qhov tob, qhia txog kev ua tiav cov txheej txheem sintering los ntawm cov hmoov hlau kom tiav cov lim dej, qhia tias cov cuab yeej no tswj hwm microstructure li cas kom ua tau zoo macroscopic kev ua tau zoo.
Txheej txheem txheej txheem: Los ntawm Loose Powder rau Integrated Filter Element
Kev tsim khoom ntawm sintered stainless hlau hmoov lim cov ntsiab lus yog cov txheej txheem kev ua haujlwm ntawm lub cev. Nws lub hauv paus ntsiab lus tseem ceeb cuam tshuam nrog kev sib koom ua ke ntawm cov hmoov hlau hmoov ua ke ntawm qhov kub thiab txias yam tsis tau ua tiav. Tag nrho cov txheej txheem tuaj yeem tawg mus rau hauv cov theem tseem ceeb hauv qab no, raws li qhia hauv qab no:
Tom ntej no, Peb Yuav Muab Cov Lus Qhia ntxaws ntxaws ntawm Yuav Ua Li Cas Txhua ntu tshwj xeeb cuam tshuam rau qhov ua tau zoo kawg
Kauj Ruam 1: Raw Material Preparation - Cov Txheej Txheem Txheej Txheem rau Kev Ua Haujlwm
Txhua yam pib nrog hmoov. Cov qauv pore zaum kawg thiab cov av muaj peev xwm tuav tau zoo yog qhov kev txiav txim siab nyob rau theem kev xaiv no.
Cov khoom siv hmoov: 316L stainless hlau hmoov feem ntau yog siv vim nws zoo heev corrosion kuj thiab biocompatibility, ua rau nws haum rau hnyav tshuaj thiab huv si ib puag ncig.
Particle Loj thiab Qib: Qhov no yog tus yuam sij rau kev tswj cov porosity thiab pore loj faib. Cov kws ua haujlwm tshawb fawb tau muab cov hmoov sib txawv ntawm qhov ntau thiab tsawg (xws li, sib tov ntxhib, nruab nrab, thiab cov khoom zoo). Fine particles sau qhov khoob ntawm cov ntxhib, ua kom muaj zog. Precisely tswj grading tsim ntau cov kab noj hniav microscopic thaum ua kom muaj kev sib txuas ntawm qhov pores, ncaj qha txhim kho av tuav lub peev xwm.
Powder Shape: Spherical hmoov muaj cov dej ntws zoo rau kev sib sau yooj yim, ua rau cov pores zoo sib xws. Cov hmoov tsis sib xws tuaj yeem tsim cov qauv sib txuas ntau dua tom qab sintering, ua rau muaj zog dua txhua yam.
Cov ntaub ntawv siv: Cov hmoov formulation rau siab -kev ua tau zoo lim cov ntsiab lus tej zaum yuav muaj grading particles nyob rau hauv ib tug 5-150 micron ntau. Los ntawm kev suav theoretical thiab kev sim, qhov tsim thawj porosity ntawm lub cev ntsuab (lub unsintered compact) tuaj yeem ncav cuag 45% -65%.
Kauj Ruam 2: Kev Tsim - Qhov Ua Ntej Ua Ntej ntawm Cov Qauv Pore
Cov hmoov sib tov yog ntim rau hauv pwm ntawm qhov xav tau. Siv cov tshuab txias Isostatic Pressing (CIP) cov tshuab, cov hmoov yuav tsum tsis sib xws, siab siab los ntawm txhua qhov kev qhia (feem ntau 100-300 MPa), compacting nws mus rau hauv tuab "ntsuab lub cev."
Kev tswj lub siab yog qhov tseem ceeb: qhov siab me me ua rau lub cev ntsuab tsis muaj zog tuaj yeem tawg; siab dhau heev lawm crushes cov hmoov hais, txo pores thiab yav tom ntej permeability.
Lub Hom Phiaj: Tsim kom muaj lub cev muaj zog txaus rau kev tuav thiab sib faib pore faib. Cov pores nyob rau theem no yog hu ua "ntsuab porosity," ua tus txheej txheem rau kev pom yav tom ntej.
