Cov txheej txheem ntau lawm thiab cov ntsiab lus tseem ceeb rau Alumina Ceramic Tubes
Sep 17, 2026
Tso lus
Alumina ceramic raj yog tsim los siv ntau yam txheej txheem, feem ntau suav nrog sintering, kub siab casting, isostatic nias, txhaj tshuaj molding, thiab lwm yam kev tshwj xeeb (xws li foaming thiab particle packing). Hauv qab no yog qee cov txheej txheem ntau lawm thiab lawv cov yam ntxwv tseem ceeb:
Kev sib xyaw ua ke Sintering
Cov txheej txheem piav qhia: Kev sib xyaw ua ke feem ntau suav nrog kev sib sau cov raj ceramic los ntawm casting / haum cov khoom siv ceramic hauv cov yeeb nkab steel siv cov khoom tshwj xeeb muab tub lim. Lub alumina ceramic hauv ob sab phlu muaj tsawg kawg yog 95% alumina thiab yog tsim los ntawm 200-tuj qhuav-nias txheej txheem. Cov yeeb nkab uas ua rau muaj qhov zoo nkauj sab hauv, zoo heev sealing zog, thiab superior hnav thiab corrosion kuj.
Txheej Txheem Zoo: Muab piv rau cov txheej txheem tsim khoom ib txwm muaj, cov txheej txheem sintering tseem ceeb muaj qhov zoo xws li cov khoom lag luam ruaj khov thiab ua haujlwm ntau dua.
Kub Pressure Casting txheej txheem
Txheej txheem ntws: Raw khoom calcination → Batching → Pob milling → Wax slurry npaj → Kub siab casting → Dewaxing (degreasing) → Sintering.
Txheej Txheem Ntsiab Lus:
Raw Material Calcination: Alumina raw cov ntaub ntawv raug siab -kub calcination (feem ntau yog 1200-1400 degree) kom tshem tawm impurities thiab nce purity. Cov txheej txheem no kuj ua rau cov qauv siv lead ua ntawm cov khoom siv raw, yog li txo qis shrinkage thaum lub sij hawm tom qab sintering.
Batching: Alumina hmoov thiab me me ntawm additives (xws li binders thiab sintering aids) raug ntsuas raws li cov khoom yuav tsum tau ua kom paub meej cov qauv sib piv.
Pob Milling: Cov khoom siv raw tau muab tso rau hauv lub pob zeb nrog rau kev sib tsoo tawm (xws li, alumina balls) thiab qhov nruab nrab dispersion (xws li dej los yog cawv). Lawv raug milled rau ib tug tshwj xeeb fineness (feem ntau particle loj ntawm 2-5 μm) thiab uniformity, xyuas kom meej sib tov thiab particle refinement.
Kev npaj ciab Slurry: Lub milled slurry yog tov nrog thermoplastic ciab (xws li paraffin wax) nyob rau hauv ib qho piv txwv. Cov sib tov yog rhuab kom txog thaum melted thiab nplawm kom huv si los tsim ib tug siv quav ciab slurry nrog zoo fluidity (wax ntsiab lus feem ntau yog li ntawm 10% mus rau 20%). Kub-pressure casting: Ciab slurry yog rhuab mus rau 60-100℃kom tswj tau lub xeev molten thiab txhaj rau hauv cov pwm pwm kab noj hniav nyob rau hauv lub siab (0.3-0.8 MPa). Tom qab lub sij hawm tuav, ib feem yog txias thiab demolded kom tau ib tug ciab dawb paug ntawm qhov xav tau zoo.
Kev tshem tawm cov quav ciab (de-waxing/degreasing): Cov khoom siv quav ciab yog maj mam rhuab (ntawm tus nqi ntawm 1-5℃/ h) mus rau 600-800℃kom ntseeg tau tias cov khoom siv quav ciab tag nrho volatilizes thiab raug tshem tawm, tiv thaiv kev tawg los ntawm cua kub ceev.
Sintering: Lub de-waxed ntsuab lub cev raug rho tawm haujlwm nyob rau hauv qhov kub ntawm - qhov cub (feem ntau yog 1600-1700℃). Tsis muaj xws li cua sov tus nqi, siab tshaj sintering kub, thiab tuav lub sij hawm yog tswj kom densify lub cev, ua rau siab - zog, siab - hardness alumina ceramic khoom.
Isostatic Pressing txheej txheem
Cov txheej txheem piav qhia: Isostatic nias feem ntau siv cov roj hmab pwm los ua cov tshuaj tsuag tsuag - qhuav hmoov nyob rau hauv isostatic siab. Cov txheej txheem no tuaj yeem ua tiav ntawm "ntub-bag" lossis "qhuav-bag" txoj kev; ntub-lub hnab nias yog siv rau cov duab yooj yim, thaum qhuav -lub hnab nias tso cai rau kev tsim cov duab nyuaj heev.
Daim ntawv thov piv txwv: Isostatic nias tshuab yog siv rau cov khoom xws li 95% alumina ceramic nqus interrupter "lub hnab ntawv" series, alumina thiab zirconia ceramic plungers, thiab loj -sized zirconia ceramic cylinder liner rau roj drilling.
Txhaj Moulding txheej txheem
Cov txheej txheem piav qhia: Ceramic txhaj tshuaj molding muaj cov txiaj ntsig zoo rau kev tsim cov khoom lag luam alumina ceramic uas xav tau qhov tseeb qhov tseeb thiab cov duab nyuaj. Precision ceramic Cheebtsam tsim los ntawm cov txheej txheem no yog siv rau hauv cov haujlwm xws li aerospace, machinery, automotive, zog, optical kev sib txuas lus, thiab biomedicine.
Cov ntsiab lus tseem ceeb: Kev txhaj tshuaj molding yuav tsum muaj kev tswj xyuas meej xws li kev txhaj tshuaj, qhov kub thiab txias, thiab lub sijhawm kom ntseeg tau qhov tseeb qhov tseeb thiab cov khoom zoo ib yam.
Lwm Cov Txheej Txheem Tshwj Xeeb
Foaming method: Cov txheej txheem no tso cai rau kev tsim cov kaw -cov qauv ntawm tes nrog cov pore me me. Los ntawm kev tswj hwm yam xws li tus nqi ntawm tus neeg sawv cev foaming thiab lub sijhawm foaming, ntxeem tau alumina ceramics nrog rau qhov xav tau qhov pore qhov ntev tuaj yeem tsim tau. Particle packing txheej txheem: Txoj kev no siv cov yam ntxwv uas zoo hais sinter yooj yim; ntawm qhov kub thiab txias, cov txheej txheem ua kua ua rau cov alumina hais ua ke, yog li tsim cov khoom ntxeem tau. Los ntawm kev tswj cov particle loj thiab kev faib tawm ntawm cov aggregate, microporous ceramics nrog ntau qhov pore loj tuaj yeem tau txais.
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