Hlau ntxeem tau cov ntaub ntawv yog tsim los ntawm ib tug ntau ntawm cov kev taw qhia los yog random qhov dispersed thoob plaws hauv cov khoom. Cov qhov no txawv ntawm txoj kab uas hla, xws li 2 micrometers mus rau 3 millimeters. Kev tsim ntawm cov qhov no tuaj yeem siv ntau hom, xws li ua npuas ncauj, lotus, lossis hom honeycomb. Nyob ntawm cov duab ntawm lub qhov, cov khoom siv hlau ntxeem tau tuaj yeem muab faib ua ob pawg: hom qhov sib txawv thiab hom qhov txuas txuas ntxiv.
Cov hom kev ywj pheej muaj ntau yam zoo, nrog rau kev sib nqus tshwj xeeb, rigidity zoo heev, lub zog tshwj xeeb, kev nqus tau zoo, thiab lub suab nqus. Ntawm qhov tod tes, cov ntaub ntawv tsis tu ncua ntawm lub qhov tsis yog tsuas yog muaj cov yam ntxwv hais saum toj no tab sis kuj pom zoo permeability thiab qhov cua. Vim lawv cov qauv tsim thiab kev ua haujlwm zoo, cov ntaub ntawv hlau ntxeem tau pom dav siv hauv ntau qhov chaw, suav nrog aerospace, tsheb thauj mus los, kev tsim kho engineering, mechanical engineering, electrochemical engineering, thiab kev tiv thaiv ib puag ncig engineering.
Powder Subtered Porous Materials
Hlau mesh porous khoom
Hlau fiber ntau sintered ntxeem tau khoom
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Muaj ntau qhov sib txawv ntawm cov khoom siv hlau ntxeem tau, nrog rau cov hmoov sintered ntxeem tau cov ntaub ntawv, hlau fiber ntau sintered ntxeem tau cov ntaub ntawv, hlau mesh porous cov ntaub ntawv, thiab ua npuas ncauj hlau cov ntaub ntawv. Ntawm cov no, hmoov sintered ntxeem tau cov ntaub ntawv yog tsim los ntawm kev siv hlau los yog alloy hmoov ua raw khoom. Cov txheej txheem suav nrog kev tsim cov hmoov rau hauv cov qauv nruj thiab sintering nws ntawm qhov kub thiab txias. Qhov no ua rau cov khoom ntxeem tau nrog ntau tus lej ntawm kev sib cuam tshuam lossis ib nrab qhov pores. Cov qauv pore yog tsim los ntawm stacking tsis tu ncua thiab tsis tu ncua hmoov cov khoom, nrog rau qhov loj thiab kev faib tawm ntawm qhov pores thiab porosity nyob ntawm seb qhov loj me me thiab cov txheej txheem kev npaj.
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Feem ntau siv cov ntaub ntawv rau hmoov sintered ntxeem tau cov ntaub ntawv xws li tooj liab, stainless hlau, hlau, npib tsib xee, titanium, tungsten, molybdenum, thiab refractory hlau tebchaw. Kev npaj cov txheej txheem rau cov ntaub ntawv no suav nrog compression molding thiab sintering, isostatic nias, xoob sintering, hmoov dov, hmoov plasticizing extrusion, thiab plam casting. Tsis tas li ntawd, kev npaj tshiab xws li centrifugal deposition, txhaj tshuaj molding, 3D luam ntawv, laser sai prototyping, thiab electron beam ceev prototyping muaj lwm txoj kev los tsim cov hmoov sintered ntxeem tau cov ntaub ntawv. -
Centrifugal deposition technology siv ib tug ntxeem tau hlau raj nrog loj pore qhov ntau thiab tsawg raws li tus qauv txhawb. Cov txheej txheem pib los ntawm kev npaj cov hmoov hlau slurry, uas tom qab ntawd muab tso rau hauv lub raj txhawb nqa thiab raug rau kev sib hloov ceev. Nyob rau hauv lub zog ntawm centrifugal quab yuam, cov hmoov hais nyob rau hauv lub slurry yog graded thiab tso rau ntawm lub puab phab ntsa ntawm lub raj, uas ua rau ib tug gradient zaj duab xis qauv. Tom qab ziab, sintering, thiab lwm yam kev kho mob yields ib tug ntxeem tau membrane raj. Cov txheej txheem no yog tsim los ua cov ntaub ntawv microporous hlau siv cov hmoov xws li titanium, titanium alloys, stainless hlau, npib tsib xee, thiab npib tsib xee alloys. Los ntawm kev ua haujlwm sub-micron thiab nano-scale particle qhov ntau thiab tsawg, nws muaj peev xwm tsim cov yeeb yaj kiab hlau microporous nrog qhov sib npaug ntawm qhov pore. -
Hlau txhaj tshuaj molding (MIM) yog lwm txoj kev los npaj cov hmoov sintered ntxeem tau cov ntaub ntawv. Hauv cov txheej txheem no, cov hmoov sib tov nrog cov organic binder thiab tsim siv lub tshuab txhaj tshuaj molding. Tom qab ntawd lub binder raug tshem tawm los ntawm qhov tsim dawb paug, thiab cov khoom tsim tawm yog sintered kom ua tiav cov khoom kawg uas xav tau. MIM thev naus laus zis muaj qhov ua tau zoo, cov qauv zoo ib yam, kev ua tau zoo heev, thiab kev ua haujlwm zoo, ua rau nws tsim nyog rau kev tsim cov khoom ntxeem tau los ntawm bronze, stainless hlau, titanium, npib tsib xee, thiab lawv cov alloys. -
Txheej txheem:
Cov txheej txheem ib txwm muaj yog compression molding thiab sintering, isostatic nias, xoob sintering, hmoov dov, hmoov plasticizing extrusion, plam casting, thiab lwm yam.
tooj liab lim
stainless hlau lim
titanium porous ntawv
