Tuam Tshoj hmoov Network Xovxwm molding, raws li ib qho tseem ceeb molding txoj kev nyob rau hauv zus tau tej cov advanced ceramics, tau ntau thiab ntau lug siv. Txij li thaum nws cov khoom yuav tsum tau ntau thiab ntau finer raw cov ntaub ntawv, nyob rau hauv thiaj li yuav txhim kho lub fluidity ntawm lub porcelain cov ntaub ntawv, txhim kho sintering kev ua tau zoo, thiab txo qhov kub ntawm sintering, nws yog ib qhov tsim nyog los ua cov alumina hmoov rau hauv cov khoom cuav, uas yog, granulated hmoov. , yog li kom uniformly sau tus qauv thiab txhim kho qhov khoob. Lub molding ceev ntawm lub cev ua kom lub sintering ceev tom qab lub porcelain yog tsim. Hauv cov txheej txheem tsim khoom ntawm alumina ceramic khoom, granulation yog ib qho ntawm cov kev sib txuas tseem ceeb tshaj plaws thiab tseem ceeb.
Feem ntau siv granulation txoj kev
1. General granulation txoj kev
Nyob rau hauv txoj kev no, plasticizer ncaj qha ntxiv rau cov hmoov, thiab cov pellets tau los ntawm kev sib xyaw thiab sieving. Qhov zoo ntawm txoj kev granulation yog qhov yooj yim rau kev khiav lag luam, tab sis qhov teeb meem yog qhov zoo ntawm cov pellet tsis zoo, qhov loj ntawm lub kheej kheej txawv, thiab cov duab kheej kheej tsis zoo.
2. Pressurized granulation txoj kev
(1) Qhuav xovxwm granulation
Qhuav xovxwm granulation yog hais txog cov txheej txheem ntawm kev tsim cov hmoov los ntawm pwm, thiab ces crushing thiab spheroidizing. Cov kauj ruam tshwj xeeb ntawm qhuav-nias granulation yog: pre-pressing conveying → dov txoj kev → crushing thiab granulating.
Qhuav nias granulation muaj qhov zoo ntawm kev ua haujlwm siab granulation thiab cov nqi tsim khoom tsawg. Tshwj xeeb, piv nrog rau qee txoj kev granulation, xws li tshuaj tsuag granulation, cov ntsiab lus ntawm binder yuav tsum tau rau qhuav nias granulation yog tsawg heev, uas yuav txo tau cov teeb meem ntawm tsawg sintered ceev thiab ntau pores tshwm sim los ntawm lub binder.
(2) Txias isostatic nias granulation
Txias isostatic nias granulation zoo ib yam li qhuav nias granulation. Qhov txawv yog tias tom qab cov hmoov ceramic tau muab tso rau hauv ib qho pwm tshwj xeeb, nws tau muab tso rau hauv lub tshuab txias isostatic nias. Txias isostatic nias yuav siv sij hawm kom zoo dua ntawm cov yam ntxwv incompressible ntawm cov kua xov xwm thiab cov yam ntxwv ntawm uniform siab hloov, uas muaj peev xwm paub lub uniform siab ntawm tus qauv los ntawm tag nrho cov lus qhia, thiab xyuas kom meej tias lub siab tau txais los ntawm cov hmoov nyob rau hauv tag nrho cov lus qhia yog uniform thiab loj. tsis hloov. Cov hmoov yog nias rau hauv lub cev ntsuab los ntawm cov txheej txheem txias isostatic nias, thiab ces crushed los ntawm crusher thiab sieved kom tiav cov txheej txheem granulation.
3. Txau granulation txoj kev
Cov txheej txheem tshuaj tsuag granulation yog sib tov cov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Cov qauv no muaj cov txiaj ntsig loj thiab tsim nyog rau kev tsim khoom lag luam.
(Tshuaj tsuag granulation ntau lawm txheej txheem)
Kev tsim khoom, tshuaj tsuag granulation tuaj yeem zam rov ua kom rov ua dua lossis ua kom muaj sedimentation ntawm txhua yam hauv slurry, kom cov slurry tuaj yeem khaws cia zoo ib yam; Nyob rau tib lub sijhawm, cov slurry tuaj yeem ua tau zoo ib yam ntawm atomized, thiab cov khoom kheej kheej nrog cov khoom sib txawv me me thiab cov fluidity zoo tuaj yeem tau txais. Cov khoom zoo li no muaj cov khoom zoo heev thiab sintering, uas pab kom thaum kawg tau txais lub cev sintered nrog siab ceev thiab siab flexural zog.
4. Kho kom qhuav txoj kev
Txoj kev no yog txau cov tshuaj ntsev ntsev rau hauv cov kua organic, uas tuaj yeem khov tam sim ntawd. Cov khoom khov yog ces sublimated nyob rau hauv qhov kub thiab txias ib puag ncig, lub cev qhuav dej thiab thermally decomposed, thiab thaum kawg cov xav tau hmoov yog tau. Cov khoom uas tau txais los ntawm txoj kev no yog ib yam nyob rau hauv muaj pes tsawg leeg thiab muaj zoo forming thiab sintering zog. Txawm li cas los xij, txoj kev no tsis haum rau kev tsim khoom loj hauv kev lag luam, thiab feem ntau yog siv hauv kev kuaj granulation.
Granulated hmoov particle zoo thiab tsim yog vim li cas
Qhov zoo ntawm alumina ceramic granulation hmoov particle zoo yuav cuam tshuam ncaj qha rau lub fluidity thiab bulk ntom ntawm cov khoom. Kev hloov pauv ntawm fluidity thiab bulk ntom yuav ua rau cov kev hloov ntawm compacted ceev ntawm lub cev ntsuab, uas nyob rau hauv lem yuav cuam tshuam rau cov kev hloov nyob rau hauv lub firing ntom thiab shrinkage tus nqi ntawm cov ceramics. Yog li ntawd, yuav ua li cas kom ntseeg tau tias cov hmoov granulated muaj cov duab zoo yog qhov teeb meem uas yuav tsum tau daws hauv cov txheej txheem ntau lawm.
Cov kua dej feem ntau zoo li yuav tsum yog spherical. Txawm li cas los xij, hauv cov txheej txheem tsim khoom, vim muaj ntau yam laj thawj, cov hmoov granulated zoo li tsim cov duab uas tsis yog kheej kheej. Muaj plaub yam qauv ntawm granulated hmoov hais:
(Piv cov duab ntawm alumina granulated hmoov)
(1) Cov khoom nruab nrab: cov duab kheej kheej: cov duab zoo tshaj plaws; apple-shaped nrog lub qhov ntiav ntiav ntawm lub pob, txawm hais tias tsis zoo li cov duab kheej kheej, nws tseem yog ib qho zoo hauv cov khoom lag luam loj.
(2) Hom tawg: Cov khoom tawg yog cov khoom tawg.
(3) Bonding hom: Nyob rau hauv lub teeb pom kev zoo, ib los yog ntau tshaj qhov me me yog adhered nyob ib ncig ntawm ib tug loj particle, thiab nyob rau hauv cov ntaub ntawv hnyav dua, ntau qhov sib txawv ntawm qhov ntau thiab tsawg los ua ke rau hauv ib pawg.
(4) Hollow hom: nyob ntawm qhov degree, muaj qhov hollow zoo nrog lub qhov tob ntawm tus kheej; muaj ib tug hlaws puab nrog ib tug los ntawm lub qhov nyob rau hauv nruab nrab.
Hom tawg, hom hollow, thiab hom sib txuas yog tag nrho cov duab tsis zoo.
(1) Muaj ob lub laj thawj tseem ceeb rau kev tsim cov khoom tawg: ib qho yog tias lub plhaub tawv ntawm cov khoom tawg yog tsim sai heev, thiab lub siab sab hauv siab dhau lawm, ua rau lub tog raj tawg thiab tsim cov khoom tawg; Ua los ntawm dov lossis squeezing, tshwm sim los ntawm kev quab yuam sab nraud. Lub degree ntawm fragmentation muaj feem xyuam rau cov neeg kho tshuab lub zog ntawm cov hais, thiab cov uas tsis muaj zog yog yooj yim rau tawg.
(2) Yog vim li cas rau qhov tsim ntawm hollow hom: Nyob rau hauv lub qhuav ntauwd ntawm cov tshuaj tsuag kom qhuav, muaj ib tug intake kub ntawm 300-400 degree C, ib tug slurry droplet yog sprayed tawm los ntawm cov tshuaj tsuag tsuag, thiab ntog ntawm ib tug tej qhov siab, thiab nws yog qhuav nyob rau hauv tus txheej txheem. . Vim yog qhov kub thiab txias, qhov chaw ntawm cov slurry dries sai heev, thiab cov binder thiab micropowder hais nyob rau saum npoo ua ke los ua ib lub plhaub tawv, uas kaw qhov saum npoo ntawm tus kheej, thiab cov dej hauv sab hauv txuas ntxiv mus sai sai rau cov huab cua. siab nyob rau hauv tus kheej. Thaum cov huab cua siab nce mus txog ib theem, cov pa roj Nws tawg los ntawm tus kheej los ntawm qhov tsis muaj zog, tawm hauv ib lub qhov nyob rau hauv lub kheej kheej.
(3) Muaj peb qhov laj thawj rau kev tsim cov ntawv cog lus: rab phom tsis zoo atomized; huab cua ntws hauv cov pej thuam granulation yog turbulent thiab tsis xwm yeem; cov slurry yog nyias dhau los yog cov tshuaj tsuag ntau dhau.
Niaj hnub no, nyob rau hauv ib tug niaj hnub era ntawm kev loj hlob sai ntawm science thiab technology, hmoov granulation technology, raws li ib tug txoj kev tseem ceeb ntawm hmoov thiab granule ua, yog ua ntau thiab ntau tseem ceeb nrog rau qhov tseem ceeb ntawm kev tiv thaiv ib puag ncig, kev txhim kho ntawm automation degree ntawm cov khoom. txheej txheem thiab cov kev cai tshwj xeeb ntawm cov txheej txheem ntau lawm. Nws qhia tau hais tias granulation ntawm hmoov cov khoom tau dhau los ua ib qho kev tsis pom kev ntawm cov hmoov tom qab ua cov tshuab hauv ntiaj teb.
Qhov chaw siv:
[1] Zhang Benqing. Ua thiab tiv thaiv cov duab tsis zoo ntawm alumina ceramic granulation hmoov
[2] Liang Yau. Kev kho deg kho ntawm zirconia hmoov
[3] Wang Tengfei et al. Kev tshawb fawb kev kawm ntawm silicon nitride ceramic hmoov granulation
Nco tseg: Cov duab no tsis yog siv rau kev lag luam, thov qhia thiab tshem tawm yog tias muaj kev ua txhaum cai!