Qhov viscosity ntawm cov ceramic slurry ua haujlwm ua lub rooj vag tseem ceeb rau kev ua kom zoo; nws tswj hwm cov txheej txheem txheej thiab tom qab ntawd kev ua tiav ntawm lub plhaub. Raws li qhov ntsuas ntawm kev tiv thaiv dej ntws, viscosity txiav txim siab qhov kev sib cuam tshuam ntawm cov slurry thiab cov qauv quav ciab, tswj hwm qhov tshwm sim ntawm cov txheej tso.
I. Qhov Yuav Tsum Tau Ua Kom Tseeb Hauv Kev Ua Haujlwm Foundry
Kev Nqis Peev Casting: Kev Taw Qhia Txog Lub Tswv Yim thiab Kev Sib Raug Zoo Nrog Kev Casting Wax Uas Ploj Lawm
Cov txheej txheem tsim khoom uas tau lees paub thoob ntiaj teb tias yog kev nqis peev casting yog lub hauv paus tseem ceeb ntawm kev tsim cov khoom siv niaj hnub no, xa cov khoom nrog kev ua haujlwm zoo tshaj plaws thiab kev nyuaj geometric. Cov txheej txheem kev lag luam no taug qab nws keeb kwm mus rau kev coj ua thaum ub ntawm kev poob quav ciab casting, ib txoj kev siv uas kav ntev ntau txhiab xyoo. Lub hauv paus ntsiab lus tseem yog kev tsim cov qauv quav ciab uas tom qab ntawd yaj tawm los tsim lub qhov rau cov hlau molten. Hauv cov ntsiab lus keeb kwm, thawj zaug xyaum,Cov roj hmab poob casting ceramic slurry, feem ntau suav nrog cov pwm yooj yim ua los ntawm beeswax thiab av nplaum, feem ntau yog rau cov hniav nyiaj hniav kub lossis cov duab kos duab.
Kev Nqis Peev Casting
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Txawm li cas los xij, kev coj ua niaj hnub no sawv cev rau txoj hauv kev siv tshuab thiab tswj hwm zoo heev. Cov lus piav qhia txog qhov kev hloov pauv no:dab tsi yog kev nqis peev castingnws tus kheej txawv los ntawm kev tsom mus rau kauj ruam tseem ceeb ntawm "kev nqis peev" cov qauv quav ciab hauv cov khoom tshwj xeebcov khoom siv ceramic casting slurry, uas thaum kawg tsim cov plhaub ceramic uas muaj zog, kub siab. Cov chaw tsim khoom niaj hnub siv covcov txheej txheem casting peevlos tsim cov chav tsev nrog qhov loj me zoo dua, phab ntsa nyias dua, thiab kev kam rau siab dua li cov txheej txheem qub, feem ntau tshem tawm qhov xav tau kev siv tshuab tom qab casting ntau.
Taw qhia txog cov teeb meem loj tshaj plaws hauv kev lag luam uas Kev Tswj Xyuas Kom Tseeb yog Qhov Tseem Ceeb Tshaj Plaws
Txawm hais tias cov txheej txheem no muaj qhov tseeb, kev tswj kom muaj kev sib xws hauv kev tsim khoom ntau thiab muaj nqis ntau ua rau muaj kev cov nyom tas li. Rau cov lag luam uas xav tau cov qauv nruj, txhua qhov kev hloov pauv hauv theem tsim lub plhaub txhais tau tias yuav ua rau muaj kev puas tsuaj loj heev lossis cov khoom pov tseg uas ua rau muaj kev puas tsuaj loj heev.
Ib qho teeb meem tseem ceeb yog xyuas kom meej tias cov khoom siv ruaj khov. Thaum casting cov superalloys siab heev, qhov zoo ntawm lub plhaub ceramic yuav tsum tiv thaiv kev cuam tshuam interfacial thiab txo qhov porosity, uas cuam tshuam ncaj qha rau qhov kawg ntawm lub zog tensile thiab cov khoom siv kho tshuab. Qhov teeb meem tseem ceeb thib ob yog tswj hwm tus nqi ntawm qhov nyuaj. Tus nqi cuab yeej rau cov khoom nyuaj thaum pib siab, thiab cov ntaub ntawv nws tus kheej kim heev. Yog li ntawd, cov khoom tsis zoo casting los ntawm cov plhaub tsis zoo ua rau muaj kev sau nyiaj txiag ntau thiab txo qis kev tsim khoom tag nrho. Qhov tsim nyog rau cov txheej txheem nkag mus rau hauv cov ntaub ntawv, es tsis yog kev kuaj xyuas tes, tsav tsheb qhov kev sib tw hauv kev lag luam ntawm kev ua tiav qhov rov ua dua thiab kev ua tus qauv, tshwj xeeb tshaj yog muab lub sijhawm ntev ua rau cov khoom nyuaj thiab kev tsim khoom loj. Lub luag haujlwm ua haujlwm rau cov chaw tsim khoom niaj hnub no yog kom ua tiav xoom qhov tsis zoo, thiab qhov kev ua tiav ntawm lub plhaub ceramic yog lub rooj vag mus rau lub hom phiaj ntawd.
Kev hloov pauv ntawm kev tsim cov khoom siv niaj hnub no - kev tswj cov khoom loj dua thiab cov hlau sib xyaw ua ke - tau ua rau muaj kev tsom mus rau cov txheej txheem txheej plhaub. Txij li thaum qhov tsis zoo ntawm cov khoom siv hauv kev cog hniav lossis lub tshuab dav hlau tsis tuaj yeem zam tau, qhov ruaj khov ntawm lub plhaub ceramic yuav tsum yog qhov tseeb. Lub tsho thawj zaug ntawmCov khoom siv ceramic slurry rau kev ua cov quav ciab ploj, yog li ntawd, ua raws li qhov tseem ceeb ntawm qhov zoo tom qab, ua rau nws txoj kev tswj hwm arguably qhov tseem ceeb tshaj plaws hauv tag nrho cov saw hlau tsim khoom.
II. Kev Tshawb Fawb Txog Cov Khoom Siv Ceramic Casting Slurry
Cov Khoom Siv Ceramic Casting Slurry: Cov Khoom Siv thiab Rheological Foundation
LubCov khoom siv ceramic slurry rau kev nqis peev castingyog ib qho tshuaj colloidal uas tau tsim los ua kom cov qauv quav ciab zoo nkauj hloov mus rau hauv cov pwm ceramic uas ruaj khov. Nws yog ib qho system nyuaj, ntau theem uas nws cov yam ntxwv ua tau zoo - hu ua rheology - yog txhais los ntawm kev sib npaug zoo ntawm nws cov kua thiab cov khoom khov.
Cov Cheebtsam Tseem Ceeb thiabImportanceof Ceramic Slurry
Qhov kev sib raug zoo ntawm cov khoom slurry thiab viscosity yog ncaj qha thiab txuas ntxiv mus. Kev hloov pauv ntawm qhov concentration, qauv, lossis kev sib cuam tshuam ntawm txhua yam khoom yuav hloov pauv tus cwj pwm ntws ntawm slurry tam sim ntawd.
Cov Khoom Siv Uas Siv Tau Ntev (Cov Khoom Kho):Cov no tsim cov qauv matrix ntawm lub plhaub. Cov ntaub ntawv siv ntau, xaiv rau lawv qhov kev ruaj khov thermal, suav nrog Zircon, Fused Silica, Alumina, thiab Aluminosilicates xws li mullite lossis calcinated kyanite. Qhov concentration ntawm cov khoom khov no muaj kev cuam tshuam loj tshaj plaws rau tus cwj pwm ntawm lub cev. Rau cov tsho tiv no ntsej muag siab, qhov loj me ntawm cov khoom me me ntawmcov khoom siv ceramic refractoryyog qhov zoo heev, feem ntau yog 600 mesh (27 μm) lossis tsawg dua. Qhov geometry ntawm cov khoom me me no, xws li hmoov corundum zoo li lash, yog tsim los txhim kho qhov du ntawm lub ntsej muag thiab txhim kho qhov tsis ntub dej tiv thaiv superalloys, uas pab cuam tshuam kev cuam tshuam ntawm lub plhaub thiab cov hlau molten. Viscosity yog ib qho haujlwm ncaj qha ntawm cov khoom me me no.
Cov Khoom Siv Ua Khi (Cov Khoom Siv Ua Kua):Cov khoom siv khi, feem ntau yog colloidal silica lossis ethyl silicate solutions, ua haujlwm ua cov kua nruab nrab thiab tus neeg sawv cev cementing. Lawv pab txhawb "ntub tawm" ntawm cov qauv quav ciab thiab xauv cov khoom refractory rau hauv qhov chaw tom qab ziab. Kev ruaj khov ntawm cov khoom siv khi raug saib xyuas los ntawm nws cov khoom khov thiab pH. Qhov viscosity ntawm cov slurry kawg yog nyob ntawm qhov ruaj khov thiab cov yam ntxwv ntawm cov colloidal suspension.
Cov Khoom Ntxiv:Muaj ntau yam tshuaj lom neeg uas muaj nyob hauv kom ua tau zoo dua. Cov tshuaj dispersants, xws li HPMC (Hydroxypropyl Methylcellulose), yog siv los txhawb kev faib cov fibers lossis cov khoom me me thiab ua kom muaj kev ruaj khov thiab viscosity ntawm cov tshuaj suspension. Cov neeg sawv cev gelling thiab cov khoom sib xyaw tshwj xeeb ntawm cov khoom siv refractory - xws li siv cov khoom siv refractory uas tuab dua, zoo dua nrog rau cov khoom sib dua, ntxhib dua - yog siv los xyuas kom meej tias cov khoom me me txav mus rau hauv qab kom ua rau cov pwm du thiab raug dua. Qhov kev tsim qauv zoo no qhia txog qhov nyuaj ntawm kev tswj hwm rheological, qhov twg txawm tias qhov hloov pauv me me hauv cov piv ntawm cov khoom tuaj yeem cuam tshuam rau tus cwj pwm tsim los yog kev ncua.
Nkag Siab Txog Kev Coj Tus cwj pwm tsis yog Newtonian ntawm Slurries
Cov kua nplaum uas siv rau hauv kev tsim khoom yog cov kua uas nyuaj, tsis yog Newtonian, uas txhais tau tias lawv qhov viscosity hloov pauv nyob ntawm qhov shear rate (piv txwv li, qhov ceev ntawm kev nplawm). Feem ntau lawv qhia txog cov yam ntxwv uas ua rau shear thinning. Viscosity nws tus kheej yog qhov ntsuas ntawm cov kua dej uas tiv taus kev ntws thiab kev hloov pauv.
Qhov teeb meem tseem ceeb hauv kev ua cov khoom ua kua (dej lossis cov kuab tshuaj) yog cov khoom uas tsis ruaj khov heev. Txhawm rau kom txo qhov tsis ruaj khov, qee lub chaw tsim khoom yuav tsum tswj qhov kub ntawm cov slurry ntawm lossis ze rau qib qis heev, xws li -93 ℃. Txawm li cas los xij, hauv feem ntau daim ntawv thov, kev ua kom qhuav yog ib qho tseem ceeb uas ua rau cov khoom tawv thiab cov khoom sib txuas tas li, ua rau muaj kev hloov pauv mus tas li hauv viscosity. Qhov kev hloov pauv tas li no, ua ke nrog qhov xwm txheej abrasive ntawm cov khoom me me ceramic, ua rau lub tank slurry ua ib qho chaw tsis ruaj khov, kev saib xyuas siab uas siv tes, cov txheej txheem tswj tsis tu ncua tsis tuaj yeem tswj tau tus qauv xav tau. Kev saib xyuas cov txheej txheem tas li yog tib txoj kev tiv thaiv kev hloov pauv ib puag ncig no.
III. Qhov tseem ceeb ntawm kev sib xws ntawm cov khoom siv Ceramic Slurry Viscosity
Lub Nexus Viscosity-Thickness-Wet-Out
Viscosity ncaj qha tswj ob qho xwm txheej lub cev uas tseem ceeb rau kev tiv thaiv qhov tsis zoo:
Kev ntub dej thiab kev npog:Qhov viscosity thiab cov khoom khov uas muaj nyob hauv cov kua nplaum yuav cuam tshuam rau qhov "ntub" ntawm cov qauv. Yog tias qhov viscosity qis dhau, cov kua dej yuav khiav tawm sai dhau, tej zaum yuav tsis nkag mus rau hauv cov duab lossis cov ces kaum uas nyuaj, uas ua rau tsis muaj kev npog lossis qhov. Kev npog sib npaug yog qhov tseem ceeb kom tsis txhob muaj qhov roughness nce siab.
Txheej Tuab:Muaj qhov sib piv ncaj qha ntawm qhov viscosity thiab qhov tuab ntawm cov txheej tso. Cov slurry tuab dua (viscosity siab dua) khiav tawm qeeb dua, tawm hauv qab cov txheej tuab dua. Txij li thaum lub plhaub tau tsim los ntawm ntau qhov dips - feem ntau siv ntau slurries ntawm viscosity nce ntxiv los tsim kom muaj zog txaus - kev hloov pauv hauv viscosity ntawm ib lub tsho slurry nthuav dav thoob plaws hauv tag nrho cov qauv plhaub.
Kev cuam tshuam rau qhov tiav ntawm qhov chaw thiab qhov tseeb ntawm qhov ntev
Kev hloov pauv sab nraud ntawm qhov yuav tsum tau ua kom pom tseeb viscosity ncaj qha ua rau muaj kev ua tsis zoo:
Qhov Chaw Tiav (Ra):Kev tswj hwm rheology tsis zoo tuaj yeem ua rau muaj qhov tsis zoo ntawm qhov chaw. Piv txwv li, yog tias viscosity qis dhau, qhov tsis txaus ntawm qhov ntub dej tuaj yeem ua rau muaj qhov pinholes, ua rau qhov chaw roughness thiab ua rau muaj peev xwm nkag mus rau hauv cov hlau thaum lub sijhawm nchuav. Ntawm qhov tod tes, qhov tsis ruaj khov ntawm cov slurry, xws li ntau dhau foaming lossis microgel tsim, kuj tuaj yeem ua rau qhov chaw tsis zoo thiab qhov tsis zoo.
Qhov Tseeb ntawm Qhov Ntev (Kev kam rau siab):Lub peev xwm ua tau raws li qhov kam rau siab, xws li 0.1 hli rau thawj 25 hli ntawm ib qho khoom, raug cuam tshuam thaum viscosity sib txawv. Cov tuab tsis sib xws thoob plaws qhov casting, ua rau los ntawm slurry khiav sai dhau (viscosity qis) lossis qeeb dhau (viscosity siab), ua rau muaj kev hloov pauv hauv qhov loj me kawg ntawm lub plhaub. Qhov no cuam tshuam ncaj qha rau qhov tiav lawmqhov tseeb ntawm qhov ntev, ua rau muaj kev pheej hmoo ntawm cov khoom tsis sib xws.
Viscosity thiab Plhaub Integrity (Lub Zog Ntsuab, Permeability)
Kev tswj hwm qhov viscosity kuj tswj hwm qhov microstructure sab hauv ntawm lub plhaub. Thaum viscosity siab dhau, nws tuaj yeem ua rau muaj kev sib txuas ntawm cov khoom me me uas tsis ua haujlwm. Cov qauv microstructure no tuaj yeem pab txhawb rau kev tsim cov kab nrib pleb me me, uas tom qab ntawd txo qhov muaj zog ntsuab ntawm lub plhaub thiab ua rau nws muaj permeability ntau dua. Cov qhov tsis zoo xws li kev tawg thaum lub sijhawm dewaxing lossis spalling hauv lub tsho thawj zaug yog cov txiaj ntsig ntawm cov qauv tsis muaj zog no. Qhov tsis muaj peev xwm tswj hwm qhov zoo ntawm cov txheej txheem cuam tshuam rau lub plhaub qhov thermal conductivity, tshuaj reactivity, thiab kev ncaj ncees ntawm cov qauv.
Txhawm rau piav qhia txog qhov ua rau muaj kev ua tsis tiav ntawm kev tswj cov txheej txheem thiab cov teeb meem tsim khoom, cov hom kev ua tsis tiav tseem ceeb uas cuam tshuam nrog kev hloov pauv viscosity tau muab tso ua ke hauv qab no.
Qauv Lub Tswv Yim ntawm Viscosity-Defect Saw
| Kev Sib Txawv ntawm Viscosity | Qhov tshwm sim ntawm Rheological | Cov Txiaj Ntsig Ua Haujlwm | Cov Kev Tsis Zoo ntawm Kev Ua Casting Thawj Zaug | Kev Cuam Tshuam Macro-Level |
| Qhov viscosity qis dhau (Nyias Slurry) | Dej ntws sai; Cov khoom khov tsawg; Kev nplaum tsis zoo; Ua npuas ncauj/cua nkag. | Cov txheej plhaub nyias nyias; Tsis txaus npog; Dej ntws ua ntej ua ntej siv stucco. | Cov qhov me me; Hlau nkag mus; Qhov ntxhib ntawm thaj chaw; Txo lub zog ntawm lub plhaub; Flash. | Cov khoom pov tseg ntau heev; Cov qauv tsis zoo uas ua rau puas tsuaj loj heev. |
| Viscosity Siab Dhau (Tuab Slurry) | Kev ntws qeeb; Kev ntxhov siab ntau; Kev tso pa tawm nyuaj; Cov khoom me me sai sai. | Txuas rau hauv cov qhov/qhov nqaim; Tsis sib xws, tuab dhau; Qhuav qeeb. | Kev Txuas/Kev Nkag Mus Rau Hauv Cov Nta; Cov Qhov Tsis Zoo Ntawm Cov Khoom Siv (spalling); Kev Dimensional Dimensional; Kua Muag Kub/Kev Ntsws. | Kev ua tsis tiav ntawm qhov ntev; Cov nqi kho dua tshiab / kho siab. |
Qhov kev ua haujlwm ntawm qhov chaw yog teem los ntawm cov tshuaj zawv plaub hau thawj zaug, uas feem ntau ua haujlwm nyob rau hauv kev tswj hwm nruj tshaj plaws. Vim tias cov tshuaj zawv plaub hau no raug nthuav tawm tas li thiab raug rau kev ua pa thoob plaws hauv kev khiav ntau lawm, viscosity drift yog ntev. Yog tias txheej hauv paus raug cuam tshuam los ntawm kev tswj hwm rheological tsis zoo, tag nrho cov txheej txheem txhawb nqa tom qab ntawd raug tsim rau ntawm lub hauv paus tsis ruaj khov, lav qhov tsis sib xws zoo thoob plaws hauv cov khoom ntau lawm. Qhov no ua rau cov tshuaj zawv plaub hau thawj zaug yog qhov chaw siab tshaj plaws rau kev cuam tshuam zoo.
IV. Cov Teeb Meem Hauv Kev Ntsuas Viscosity Slurry Tsis Tu Ncua
Qhov tsim nyog rau kev ntsuas viscosity tas mus li, meej yog tsav los ntawm cov kev txwv hnyav ntawm cov txheej txheem tswj cov slurry ib txwm muaj, uas ua rau muaj kev tsis ruaj khov hauv cov txheej txheem casting peev.
RauCov Kws Ua Haujlwm Txheej Txheem thiab Cov Kws Tshwj Xeeb QC, txoj kev ntsuas ib txwm muaj—lub khob ntws—muaj ntau yam teeb meem kev siv tshuab. Txoj kev no yog qhov tsis ncaj qha, ntsuas lub sijhawm ntws tawm es tsis yog qhov tseeb viscosity, thiab rhiab heev rau cov yam ntxwv sab nraud xws li kub, cov txheej txheem ua haujlwm, thiab lub ntiajteb txawj nqus tshwj xeeb. Qhov tsis muaj qhov tseeb thiab rov ua dua no tsis sib xws nrog cov kev kam rau siab uas xav tau los ntawm cov ntawv thov casting niaj hnub no. Ntxiv mus, qhov kev kuaj xyuas khob ntws yog intermittent, ua ntawm discrete intervals. Thaum lub sijhawm ntawm cov kev kuaj xyuas tes no, evaporation ua rau viscosity drift tas mus li, txhais tau tias muaj ntau yam khoom siv coated nyob rau hauv cov xwm txheej tsis ua raws li ua ntej kev kho kom raug tuaj yeem ua tiav manually. Lub sijhawm lag luam no ua rau kev tswj hwm rov qab es tsis yog kwv yees, tiv thaiv kev cuam tshuam cov txheej txheem tiag tiag.
Qhov teeb meem no ua rau muaj ntau yam teeb meem ntxiv yog qhov chaw ib puag ncig ntawm lub tank slurry. Qhov muaj cov khoom me me, tawv, thiab abrasivecov khoom siv ceramic refractoryua rau cov sensors thiab probes ib txwm puas sai lossis sai sai muaj cov av qias. Qhov no yuav tsum tau ntxuav thiab calibration ntau zaus, uas ua rau cov nqi kho thiab lub sijhawm ua haujlwm nce ntxiv.
RauKev Tswj Xyuas (Kev Ua Haujlwm thiab Nyiaj Txiag), cov teeb meem kev txawj ntse no txhais tau ncaj qha mus rau hauv kev tsis ruaj khov nyiaj txiag. Qhov tsis muaj kev tswj hwm lub sijhawm tiag tiag ua rau muaj cov khoom pov tseg siab thiab tsis tuaj yeem kwv yees tau. Thaum siv cov hlau alloys muaj nqis siab, cov qhov tsis zoo uas tsis tuaj yeem tswj tau xws li kev tawg, kev suav nrog, kev khiav tsis raug, lossis kev ntsws los ntawm cov plhaub tsis sib xws ua rau muaj kev poob nyiaj txiag loj thiab feem ntau tsis ruaj khov. Tsis tas li ntawd, kev kho qhov viscosity ntawm tes feem ntau cuam tshuam nrog kev siv tshuaj tsis zoo, kev them nyiaj ntau dhau ntawm cov khoom siv kim thiab cov kuab tshuaj, ua rau cov khoom pov tseg ntau ntxiv. Cov nyhuv sib sau ua ke ntawm kev kuaj xyuas tes, kev ua haujlwm dua, thiab cov nqi tsis tuaj yeem kwv yees tau thaum kawg ua rau muaj kev cuam tshuam rau kev xa khoom thiab ua rau lub sijhawm ua haujlwm ntev dua, txwv tsis pub muaj peev xwm nthuav dav kev tsim khoom zoo.
Cov Kev Txwv ntawm Kev Ntsuas Inferential (piv txwv li, Specific Gravity/Density)
Nws yog ib qho tseem ceeb kom nkag siab txog qhov sib txawv ntawm kev ntsuas qhov ceev thiab kev ntsuas viscosity, vim tias ib qho tsis tuaj yeem hloov pauv rau lwm qhov hauv kev tswj hwm rheological.
A lub ntsuas qhov ntom ntawm cov kua nplaumntsuas qhov hnyav ib chav ntim, feem ntau siv los txiav txim siab qhov concentration ntawm cov khoom khov hauv cov tshuaj suspension. Thaum kev ntsuas qhov ceev (feem ntau saib xyuas los ntawm qhov hnyav tshwj xeeb, taug qab cov khoom khov binder) yog ib qho ntawm cov kev tswj hwm slurry tiav, nws tsuas yog muab kev pom ntawm kev ua tau zoo. Cov khoom siv ceev, txawm tias cov kab ke siab heev zoo li alub ntsuas qhov ntom ntom uas tsis yog nuclearsiv rau hauv kev lag luam xws li kev khawb av lossis kev khawb av, tsis ntes tau cov yam ntxwv ntawm cov kua dej ntws.
Qhov viscosity, ntawm qhov tod tes, ntsuas qhov kev sib txhuam sab hauv, lossis kev tiv thaiv kev ntws thiab kev hloov pauv. Txawm hais tias kev ua kom cov dej noo nce ob qho tib si qhov ceev thiab viscosity, kev hloov pauv nyuaj hauv cov slurry - xws li microgel tsim, particle settling, flocculation, lossis txawm tias qhov kub hloov pauv - tuaj yeem hloov pauv qhov kev ua haujlwm ntws ntawm cov kua dej (viscosity) yam tsis muaj kev hloov pauv yooj yim, ntsuas tau hauv qhov ceev tag nrho. Rau kev tswj cov txheej txheem dynamic ntawm cov txheej tuab, kev ua haujlwm ntub dej, thiab tus nqi ntws - cov haujlwm tseem ceeb ntawm cov slurry - viscosity yog qhov tseem ceeb, ncaj qha parameter. Kev cia siab rau tus neeg sawv cev ceev ceev tsuas yog ua rau lub chaw tsim khoom raug rau rheological tsis ruaj khov thiab cov txiaj ntsig txheej txheem tsis tuaj yeem kwv yees tau.
Qhov kev tsis ruaj khov no hauv theem tsim lub plhaub sawv cev rau qhov teeb meem loj rau kev siv tag nrho ntawm kev siv tshuab hauv kev lag luam Yog tias cov tswv yim tseem ceeb (cov qauv plhaub) tsis txhim khu kev qha vim yog qhov tsis tswj tau viscosity, kev sim ua kom zoo dua cov txheej txheem downstream yuav ua rau muaj txiaj ntsig tsis txhim khu kev qha thiab tsis tuaj yeem kwv yees tau.
Kawm Txog Ntau Cov Ntsuas Qhov Ceev
Ntau Cov Txheej Txheem Online
V. Cov Kev daws teeb meem Lonnmeter In-Process Viscometer
Lonnmeter In-Process Viscometer: Kev Siv Tshuab thiab Kev Ua Haujlwm
Cov thev naus laus zis Lonnmeter yog tsim los rau kev siv inline nruj hauv cov txheej txheem kev lag luam, xa cov txiaj ntsig raug thiab txhim khu kev qha ncaj qha hauv cov kab tsim khoom, yog li tshem tawm cov haujlwm rov ua dua thiab cov yuam kev ntawm tes.
Cov Ntsiab Cai Tseem Ceeb ntawm Kev Siv Tshuab:Cov cuab yeej no feem ntau siv cov thev naus laus zis siab heev uas siv kev co lossis kev cuam tshuam. Ib qho khoom siv ntsuas, feem ntau yog tus pas nrig resonant, raug muab tso rau hauv cov kua dej thiab oscillated. Lub zog damping lossis qhov hloov pauv zaus uas xav tau los tswj kev oscillation raug ntsuas, uas muab kev xam ncaj qha, lub hom phiaj ntawm cov kua dej viscosity. Txoj hauv kev no zoo dua li cov txheej txheem raws li kev ntws vim nws ntsuas cov khoom rheological intrinsic tsis hais txog cov yam ntxwv ntws hauv lub tank.
Kev daws teeb meem Abrasiveness thiab Fouling:Ib qho tseem ceeb uas ua rau txawv yog qhov ruaj khov ntawm tus qauv tsim sensor. Lonnmeter viscometers yog tsim los rau kev ruaj khov, muaj cov qauv kho tshuab tshwj xeeb uas tiv taus cov xwm txheej nyuaj ntawm kev ua haujlwm hauv thaj chaw, suav nrog kev raug rau cov kua dej pasty thiab cov slurries abrasive. Los ntawm kev koom ua ke cov yam ntxwv uas tiv thaiv kev thaiv thiab scaling - zoo ib yam li cov thev naus laus zis uas siv kev co ua ke los tiv thaiv cov deposits - cov sensors ua haujlwm rau lub sijhawm ntev, txo cov kev xav tau txij nkawm thiab xyuas kom meej tias muaj kev huv si rau kev ntsuas txhim khu kev qha. Lub peev xwm no yog qhov tseem ceeb rau kev tswj hwm cov hmoov av ntom ntom, zoo.
Kev Ntsuas Qhov Tseeb thiab Kev Teb Sai:Lub kaw lus no muaj cov ntaub ntawv nyeem viscosity raug heev uas xa tuaj rau lub sijhawm tiag tiag, ua rau nws muaj peev xwm ntes tau cov kev hloov pauv ntawm cov khoom sib xyaw uas tshwm sim los ntawm kev ua pa, kev hloov pauv kub, lossis kev ntxiv cov khoom xyaw. Qhov kev teb sai no tso cai rau cov kws ua haujlwm hloov pauv los ntawm kev tswj hwm reactive (kho cov teeb meem tom qab lawv tshwm sim) mus rau kev tswj hwm proactive, qhov twg cov kev ntsuas kho kom zoo yog raws li cov ntaub ntawv tshawb fawb thiab raug.
Kev Ruaj Ntseg thiab Kev Ntseeg Siab:Los ntawm kev koom ua ke qhov kev ntsuas ncaj qha rau hauv cov txheej txheem, lub kaw lus Lonnmeter muab kev ruaj khov tas mus li, txo qhov sib txawv ntawm kev hloov pauv thiab qhov yuam kev uas muaj nyob hauv kev sim tes. Qhov kev ntseeg siab tas mus li no yog lub hauv paus rau kev siv cov kab ke tswj hwm kaw-loop uas tsim nyog rau cov chaw tsim khoom siab heev. Cov sensors tau tsim tshwj xeeb los ua haujlwm rau ntau xyoo nrog kev saib xyuas tsawg kawg nkaus, ua kom lub sijhawm ua haujlwm siab tshaj plaws thiab txo qhov kev pheej hmoo ua haujlwm.
VI. Cov txiaj ntsig ntawm kev soj ntsuam viscosity tas mus li
Kev siv lub tshuab Lonnmeter hloov kev npaj cov khoom siv ua los ntawm cov av nplaum los ntawm qhov tsis paub tseeb mus rau theem ruaj khov thiab tswj tau ntawm cov txheej txheem tsim khoom. Kev saib xyuas tas mus li thiab meej yog kauj ruam tsim nyog rau kev ua kom zoo tshaj plaws, kev sib xws, thiab kev ua haujlwm tsis siv neeg hauv kev tsim lub plhaub.
Kev Ruaj Ntseg Txhim Kho Cov Txheej Txheem:Kev sau cov ntaub ntawv tiag tiag ua rau muaj kev saib xyuas thiab kev saib xyuas cov slurry ntawm qhov kub thiab viscosity xav tau, ncaj qha tawm tsam cov teebmeem tam sim ntawd thiab txuas ntxiv ntawm cov kuab tshuaj evaporation thiab kev hloov pauv kub ib puag ncig. Qhov kev ruaj khov tas li ntawmCov khoom siv ceramic slurry rau kev ua cov quav ciab plojyog qhov tseem ceeb rau cov chaw tsim khoom uas muaj kev ntseeg siab, muab cov pov thawj zoo tsim nyog rau kev ua raws li qhov zoo thiab cov ntaub ntawv pov thawj ntawm cov khoom siv.
Kev Kho Kom Zoo Tam Sim Ntawd, Tsis Siv Neeg:Kev saib xyuas tas mus li tso cai rau cov zis sensor kom koom ua ke rau hauv lub voj voog rov qab tsis siv neeg. Cov ntaub ntawv ntawm lub viscometer cia li ua rau cov txheej txheem ntsuas dosing kom txhaj cov tshuaj lossis cov khoom ntxiv kom raug kom tswj tau qhov chaw teeb tsa. Lub peev xwm no rau kev kho kom raug tsis siv neeg tshem tawm qhov yuam kev ntawm tib neeg, tshem tawm lub sijhawm qeeb ntawm kev kuaj xyuas tes, thiab ua kom cov khoom sib xws thoob plaws lub voj voog tsim khoom ntev.
Kev Txhim Kho Lub Plhaub Zoo Dua:Kev sib xyaw ua ke ntawm cov slurry rheology txhais tau tias yog tus cwj pwm txheej txheem uas kwv yees tau. Qhov no ua kom ntseeg tau tias cov txheej txheem sib npaug tuab thiab ua kom zoo tshaj plaws ntawm cov yam ntxwv ntub dej thoob plaws txhua qhov dips, txawm tias plaub, rau, lossis ntau dua. Kev ua tiav qhov sib xws no txo qhov tshwm sim ntawm cov qhov tsis zoo ntawm lub plhaub viscosity, suav nrog kev sib txuas, kev suav nrog ceramic, kev khiav tsis raug, thiab kev tawg, uas yog cov teeb meem feem ntau cuam tshuam rau qhov zoo ntawm cov khoom kawg cam khwb cia. Los ntawm kev ruaj khov qhov zoo ntawm cov txheej txheem, lub chaw tsim khoom txhim kho lub plhaub muaj zog, permeability, thiab kev ncaj ncees ntawm cov qauv, ua rau muaj kev cam khwb cia zoo dua thiab txo lub sijhawm tsim khoom thiab tus nqi.
VII. Cov Kev Zoo ntawm Kev Ua Haujlwm thiab Kev Lag Luam hauv Qib Macro
Kev siv cov kev tswj hwm viscosity tas mus li siv cov cuab yeej siv siab heev muab cov txiaj ntsig macro tseem ceeb uas nthuav dav tshaj qhov kev lees paub zoo yooj yim, tsav tsheb ua haujlwm tau zoo thiab muaj txiaj ntsig los ntawm kev ruaj khov qhov uas yav dhau los yog cov txheej txheem tsis ruaj khov.
Txo Cov Khoom Pov Tseg thiab Rov Ua Dua (Kev Txo Qhov Tsis Zoo):Qhov txiaj ntsig zoo tshaj plaws rau kev lag luam yog qhov txo qis qhov tsis zoo. Los ntawm kev ua kom lub plhaub ruaj khov thiab tiv thaiv qhov tsis zoo uas tshwm sim los ntawm cov kua dej tsis sib xws (xws li kev sib txuas, kev ntub dej tsis zoo, lossis kev cuam tshuam ntawm qhov ntev), cov chaw tsim khoom txo qis qhov ntau ntawm cov khoom seem thiab qhov xav tau kev kho dua tshiab kim heev. Qhov cuam tshuam no tau nce ntxiv thaum ua haujlwm nrog cov khoom kim heev, kev ua haujlwm siab xws li cov hlau nplaum nickel lossis cov hlau nplaum cobalt. Kev txo qhov zaus ntawm qhov tsis zoo xws li kaw txias thiab ntsws ua rau muaj kev kwv yees ua haujlwm.
Kev Siv Khoom Siv Zoo Tshaj Plaws:Kev siv tshuab ua kom ntseeg tau tias cov kev ntsuas kho yog raws li qhov xav tau ntawm kev tshawb fawb. Cov txheej txheem ntsuas tshuaj tsis siv neeg qhia txog cov ntim ntawm cov khoom siv kim thiab cov khoom ntxiv raws li kev nyeem ntawv Lonnmeter tiag tiag, tshem tawm qhov kev hloov kho ntau dhau thiab cov khoom pov tseg feem ntau cuam tshuam nrog kev tswj hwm tes tsis raug.
Ua kom muaj kev ua haujlwm ntau ntxiv thiab kwv yees tau zoo dua:Los ntawm kev ua kom cov txheej txheem tsim lub plhaub ruaj khov, LonnmeterViscometer uas siv rau hauv kev lag luamtshem tawm cov kev cuam tshuam tsis tau teem sijhawm, lub sijhawm kuaj xyuas tes, thiab kev ncua sijhawm los ntawm kev pov tseg lossis kho cov plhaub tsis zoo. Qhov kev txhim kho no ua rau muaj kev ua haujlwm zoo dua, lav lub sijhawm ua khoom ntau ntxiv thiab feem ntau luv dua rau cov plhaub ceramic zoo. Qhov ua tau zoo hauv kev daws teeb meem ntawm cov kev hloov pauv ntau yam yog qhov zoo sib tw tseem ceeb.
Ua tiav cov Kev Ntsuas Zoo Tshaj Plaws thiab Sib Xws:Lub hauv paus tseem ceeb, kev tswj hwm viscosity tas mus li tso cai rau cov chaw tsim khoom kom tsim cov plhaub uas ua rau cov khoom sib ntsib lossis dhau qhov yuav tsum tau ua nruj tshaj plaws rauqhov tseeb ntawm qhov ntev, kev ua kom zoo ntawm qhov chaw, thiab kev ua haujlwm ntawm cov khoom siv. Lub peev xwm no los tsim cov khoom siv txhim khu kev qha, rov ua dua, thiab cov khoom siv siab ua rau cov neeg siv khoom hauv cov lag luam tseem ceeb muaj peev xwm tsim kho tshiab, ntseeg siab tias cov txheej txheem tsim khoom tau ruaj ntseg los ntawm kev lees paub zoo los ntawm cov ntaub ntawv.
Lub LonnmeterViscometer uas siv rau hauv kev lag luammuab cov thev naus laus zis tsim nyog los txuas qhov sib txawv no, muab kev ruaj khov, tsis tas yuav saib xyuas ntau,kev daws teeb meem tiag tiagtsim los rau qhov chaw nyuaj, abrasive ntawm lub slurry tank.
Txhawm rau txheeb xyuas koj cov txheej txheem uas twb muaj lawm, ntsuas cov cib fim tam sim ntawd rau kev txo qhov tsis zoo, thiab kos duab kev koom ua ke ntawm kev saib xyuas viscosity tas mus li rau hauv koj cov haujlwm hauv chav plhaub, peb caw koj cov pab pawg kev tshaj lij thiab kev tswj hwm losThov Kev Sab Laj Txog Kev Txawj Ntse DawbQhov kev sab laj tshwj xeeb no yuav muab ib txoj kev npaj ntxaws ntxaws, uas siv cov ntaub ntawv los siv rau kev siv lub kaw lus Lonnmeter kom ua tau zoo thiab ua haujlwm tau zoo.
