Qhuav nias molding txoj kev
Alumina ceramicqhuav nias molding tshuab yog txwv rau cov duab ntshiab thiab phab ntsa thickness ntau tshaj 1 hli, qhov ntev rau txoj kab uas hla tsis ntau tshaj 4∶1 khoom.Txoj kev tsim yog uniaxial lossis biaxial.Cov xovxwm muaj hydraulic, mechanical ob yam, tuaj yeem ua semi-automatic lossis tsis siv neeg molding.Qhov siab tshaj plaws ntawm cov xovxwm yog 200Mpa, thiab cov zis tuaj yeem ncav cuag 15 ~ 50 daim ib feeb.
Vim tias lub siab tsis sib xws ntawm hydraulic xovxwm, qhov siab ntawm nias qhov sib txawv thaum cov hmoov filling txawv.Txawm li cas los xij, lub siab siv los ntawm cov tshuab xovxwm sib txawv nrog cov hmoov txhaws, uas yuav yooj yim ua rau qhov sib txawv ntawm qhov loj me tom qab sintering thiab cuam tshuam rau cov khoom zoo.Yog li ntawd, kev sib faib ntawm cov hmoov hmoov nyob rau hauv qhuav nias txheej txheem yog ib qho tseem ceeb heev rau pwm filling.Txawm hais tias qhov ntim ntau yog qhov tseeb lossis tsis muaj kev cuam tshuam zoo rau qhov kev tswj xyuas qhov tseeb ntawm cov khoom siv alumina ceramic.Qhov siab tshaj plaws pub dawb ntws tuaj yeem tau txais thaum cov hmoov hmoov loj dua 60μm thiab nruab nrab ntawm 60 ~ 200 mesh, thiab qhov zoo tshaj plaws kev ua haujlwm siab tuaj yeem tau txais.
Txoj kev grouting molding
Grouting molding yog txoj kev molding ntxov tshaj plaws siv hauvalumina ceramics.Vim yog kev siv gypsum pwm, tus nqi qis thiab yooj yim rau kev tsim cov loj loj, cov duab zoo, qhov tseem ceeb ntawm grouting molding yog kev npaj ntawm alumina slurry.Feem ntau nrog dej raws li qhov nruab nrab flux, thiab tom qab ntawd ntxiv cov kua nplaum dissolving tus neeg sawv cev thiab khi, tag nrho tom qab sib tsoo tawm, thiab tom qab ntawd nchuav rau hauv plaster pwm.Vim lub adsorption ntawm dej los ntawm lub capillary ntawm gypsum pwm, lub slurry yog solidified nyob rau hauv pwm.Hollow grouting, nyob rau hauv pwm phab ntsa adsorption slurry thickness mus txog rau qhov yuav tsum tau, tab sis kuj yuav tsum tau ncuav tawm cov slurry tshaj.Txhawm rau kom txo qis qis ntawm lub cev, kev siv cov slurry siab yuav tsum tau siv kom deb li deb tau.
Organic additives yuav tsum tau ntxiv rau lubalumina ceramicslurry los tsim ob txheej hluav taws xob rau ntawm qhov chaw ntawm slurry hais kom cov slurry tuaj yeem raug tshem tawm ruaj khov yam tsis muaj nag lossis daus.Tsis tas li ntawd, nws yuav tsum tau ntxiv vinyl cawv, methyl cellulose, alginate amine thiab lwm yam binder thiab polypropylene amine, Arabic cov pos hniav thiab lwm yam dispersants, lub hom phiaj yog ua kom cov slurry haum rau grouting molding lag luam.
Sintering technology
Cov txheej txheem txheej txheem ntawm densifying granular ceramic lub cev thiab tsim cov khoom siv hu ua sintering.Sintering yog txoj kev tshem tawm cov void ntawm cov khoom nyob rau hauv lub cev ntawm lub billet, tshem tawm ib tug me me ntawm cov pa roj thiab impurities los ntawm cov organic teeb meem, thiaj li hais tias cov hais loj hlob ua ke thiab tsim cov khoom tshiab.
Cov cuab yeej siv cua sov siv rau kev tua hluav taws feem ntau yog lub qhov cub hluav taws xob.Ntxiv rau qhov qub siab sintering, uas yog, tsis muaj siab sintering, kub nias sintering thiab kub isostatic nias sintering.Kev kub ceev nruam tuaj yeem nce ntau lawm, tab sis tus nqi ntawm cov khoom siv thiab pwm yog siab dhau lawm, ntxiv rau qhov ntev ntawm cov khoom raug txwv.Kub isostatic siab sintering txais kev kub siab thiab siab siab roj raws li kev hloov pauv nruab nrab, uas muaj qhov zoo ntawm cov cua sov hauv txhua qhov kev qhia, thiab yog tsim rau sintering ntawm complex khoom.Vim tias cov qauv tsis sib xws, cov khoom ntawm cov khoom yog nce los ntawm 30 ~ 50% piv nrog txias nias sintering.10 ~ 15% siab dua li qub kub nias sintering.
Post lub sij hawm: May-12-2022