A conical ntxaib ntsia hlau extruderyog ib hom ntxaib ntsia hlau extruder uas muaj ob lub hau ntswj nyob rau hauv cov duab conical, tapering mus rau qhov kawg ntawm extruder.Qhov kev tsim no muab kev txo qis hauv cov ntsia hlau channel ntim, ua rau muaj zog ntxiv thiab txhim kho kev sib xyaw.Lub conical ntxaib ntsia hlau extruder feem ntau yog tsim los ntawm lub thoob ntsia hlau, iav kis tau tus mob, kev noj ntau, lub tshuab nqus tsev, cua sov, cua txias thiab hluav taws xob tswj cov khoom.
Lub conical ntxaib ntsia hlau extruder yog tsim los ua PVC khoom los ntawm cov hmoov sib tov.PVC yog cov thermoplastic polymer uas muaj ntau yam kev siv hauv ntau yam lag luam, xws li kev tsim kho, ntim khoom, hluav taws xob, tsheb, thiab kev kho mob.Txawm li cas los xij, PVC tsis sib haum nrog ntau lwm cov khoom siv polymers thiab cov khoom siv ntxiv, thiab yuav tsum tau ua cov txheej txheem tshwj xeeb kom ua tiav cov khoom xav tau thiab kev ua haujlwm.Lub conical ntxaib ntsia hlau extruder tuaj yeem muab qhov tsim nyog sib tov, melting, devolatilization, thiab homogenization ntawm PVC thiab nws cov additives nyob rau hauv ib tug tas mus li thiab npaum li cas.
Lub conical ntxaib ntsia hlau extruder kuj yog cov cuab yeej tshwj xeeb rau WPC hmoov extrusion.WPC sawv cev rau cov ntoo-yas sib xyaw, uas yog cov khoom siv sib txuas ntoo fibers lossis ntoo hmoov nrog thermoplastic polymers, xws li PVC, PE, PP, lossis PLA.WPC muaj qhov zoo ntawm cov ntoo thiab yas, xws li lub zog siab, ua haujlwm ntev, huab cua tsis kam, thiab rov ua dua tshiab.Lub conical ntxaib ntsia hlau extruder tuaj yeem ua cov hmoov WPC nrog cov zis siab, khiav ruaj khov, thiab ua haujlwm ntev.
Nrog cov pwm sib txawv thiab cov khoom siv qis qis, conical ntxaib ntsia hlau extruder tuaj yeem tsim ntau yam khoom siv PVC thiab WPC, xws li cov kav dej, qab nthab, qhov rais profiles, ntawv, decking, thiab granules.Cov khoom no muaj cov duab sib txawv, qhov ntau thiab tsawg, thiab kev ua haujlwm, thiab tuaj yeem ua tau raws li kev xav tau ntawm cov neeg siv khoom thiab kev lag luam.
Txheej txheem piav qhia
Cov txheej txheem ntawm conical ntxaib ntsia hlau extrusion tuaj yeem muab faib ua plaub theem tseem ceeb: pub, melting, devolatilization, thiab shaping.
Pub
Thawj theem ntawm conical ntxaib ntsia hlau extrusion yog pub.Nyob rau theem no, cov khoom siv raw, xws li PVC lossis WPC hmoov, thiab lwm yam khoom ntxiv, xws li stabilizers, lubricants, fillers, pigments, thiab modifiers, raug ntsuas thiab pub rau hauv extruder los ntawm cov khoom noj sib txawv, xws li cov ntsia hlau augers, vibratory. cov tais, qhov hnyav-siv, thiab cov twj tso kua mis.Tus nqi pub mis thiab qhov tseeb yog qhov tseem ceeb uas cuam tshuam rau qhov zoo thiab sib xws ntawm cov khoom kawg.Cov khoom siv raw tuaj yeem ua ntej sib xyaw thiab pub, los yog sib cais thiab sib txuas mus rau hauv lub extruder, nyob ntawm seb cov qauv tsim thiab cov khoom xav tau ntawm cov khoom.
Melting
Qhov thib ob theem ntawm conical ntxaib ntsia hlau extrusion yog melting.Nyob rau theem no, cov khoom siv raw tau raug xa tawm, compressed, thiab rhuab los ntawm cov rotating screws thiab lub thoob tso cua sov, thiab hloov los ntawm cov khoom mus rau lub xeev ua kua.Cov txheej txheem melting muaj ob qho tib si thermal thiab mechanical zog input, thiab yog cuam tshuam los ntawm cov ntsia hlau ceev, ntsia hlau configuration, chim kub, thiab cov khoom siv.Cov txheej txheem melting kuj tseem ceeb heev rau kev sib cais thiab kev faib tawm ntawm cov khoom siv ntxiv hauv cov khoom siv polymer, thiab kev pib ntawm cov tshuaj tiv thaiv, xws li kev sib txuas, kev sib txuas, lossis kev puas tsuaj, uas yuav tshwm sim hauv cov yaj.Cov txheej txheem melting yuav tsum tau ua tib zoo tswj kom tsis txhob overheating, over-shearing, lossis under-melting ntawm cov ntaub ntawv, uas yuav ua rau cov khoom tsis zoo thiab kev ua tau zoo.
Devolatilization
Qhov thib peb theem ntawm conical ntxaib ntsia hlau extrusion yog devolatilization.Nyob rau theem no, cov khoom tsis hloov pauv, xws li ya raws, huab cua, monomers, cov kuab tshuaj, thiab cov khoom decomposition, raug tshem tawm ntawm cov yaj los ntawm kev siv lub tshuab nqus tsev ntawm qhov chaw nres nkoj ntawm lub extruder chim.Cov txheej txheem devolatilization yog qhov tseem ceeb rau kev txhim kho cov khoom zoo thiab kev ruaj ntseg, nrog rau kev txo cov kev cuam tshuam ib puag ncig thiab kev noj qab haus huv ntawm cov txheej txheem extrusion.Cov txheej txheem devolatilization nyob ntawm tus qauv tsim, lub tshuab nqus tsev, yaj viscosity, thiab cov yam ntxwv ntawm cov khoom siv.Cov txheej txheem devolatilization yuav tsum tau ua kom zoo kom ua tiav qhov kev tshem tawm txaus ntawm cov volatiles yam tsis ua rau ntau dhau foaming, vent dej nyab, los yog yaj degradation.
Kev tsim
Qhov thib plaub thiab kawg theem ntawm conical ntxaib ntsia hlau extrusion yog shaping.Nyob rau theem no, cov yaj yog extruded los ntawm ib tug tuag los yog ib tug pwm uas txiav txim qhov zoo thiab qhov loj ntawm cov khoom.Cov tuag lossis pwm tuaj yeem tsim los tsim ntau yam khoom, xws li cov kav dej, profiles, ntawv, zaj duab xis, lossis granules.Cov txheej txheem shaping yog cuam tshuam los ntawm qhov tuag geometry, tuag siab, tuag kub, thiab yaj rheology.Cov txheej txheem shaping yuav tsum tau hloov kho kom ua tau raws li qhov sib xws thiab du extrudates yam tsis muaj qhov tsis xws luag, xws li tuag swell, yaj tawg, lossis qhov tsis txaus ntseeg.Tom qab cov txheej txheem shaping, cov extrudates yog txias, txiav, thiab sau los ntawm cov khoom siv downstream, xws li calibrators, haul-offs, cutters, thiab winders.
Xaus
Lub conical ntxaib ntsia hlau extruder yog ntau yam thiab siv tau zoo rau kev tsim cov khoom siv PVC thiab WPC los ntawm cov hmoov sib tov.Nws tuaj yeem muab cov haujlwm tsim nyog ntawm kev pub mis, melting, devolatilization, thiab shaping nyob rau hauv ib tug tas mus li thiab tswj.Nws tseem tuaj yeem tsim ntau yam khoom nrog cov duab sib txawv, qhov ntau thiab tsawg, thiab kev ua haujlwm, los ntawm kev siv cov pwm sib txawv thiab cov khoom siv qis qis.Lub conical ntxaib ntsia hlau extruder muaj qhov zoo ntawm kev sib xyaw ua ke zoo, cov khoom siv loj, kev khiav haujlwm ruaj khov, thiab kev pab cuam lub neej ntev, thiab tuaj yeem ua tau raws li kev xav tau ntawm cov neeg siv khoom thiab kev lag luam.
Yog xav paub ntxiv los yog nug, thovtiv tauj peb:
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Post lub sij hawm: Jan-24-2024