Extrusion yog txheej txheem kev tsim khoom uas cuam tshuam cov khoom siv los ntawm kev tuag los tsim ib qho khoom nrog ib qho txuas txuas txuas txuas ruaj khov. Cov thev naus laus zis tau siv ntau hauv kev lag luam xws li yas, hlau, khoom noj thiab tshuaj. Cov tshuab siv nyob rau hauv cov txheej txheem extrusion tshwj xeeb yog tsim los ua kom tau raws li qhov tshwj xeeb ntawm cov khoom siv extruded los xyuas kom meej efficiency thiab precision. Hauv tsab xov xwm no, peb yuav saib ntau hom tshuab siv hauv cov txheej txheem extrusion, lawv cov khoom, thiab lawv ua haujlwm li cas.
1. Ib leeg ntsia hlau Extruder
Ib qho ntsia hlau extruder yog hom extruder feem ntau. Nws muaj ib tug helical ntsia hlau rotating nyob rau hauv ib tug cylindrical chim. Cov khoom yog pub rau hauv lub hopper qhov twg nws yog rhuab thiab melted thaum nws txav raws lub hau. Kev tsim ntawm cov ntsia hlau tso cai rau cov khoom sib tov, melted thiab pumped mus rau lub taub hau tuag. Ib leeg ntsia hlau extruders muaj ntau yam thiab siv tau rau ntau yam ntaub ntawv, nrog rau cov thermoplastics thiab qee cov thermosets.
2. Twin Ntsia Hlau Extruder
Twin-screw extruders muaj ob qhov sib txuas ntawm cov ntsia hlau uas tig mus rau tib qho los yog sib txawv. Qhov kev tsim no tso cai rau kev sib xyaw kom zoo dua thiab sib xyaw ua ke thiab yog qhov zoo tagnrho rau cov ntawv thov uas xav tau qib siab ntawm homogeneity. Twin-screw extruders feem ntau yog siv rau hauv kev tsim khoom noj, tshuaj thiab cov khoom siv polymer siab heev. Twin-screw extruders tuaj yeem ua cov khoom siv dav dav, suav nrog cov ntaub ntawv kub-rhiab.
3. Plunger Extruder
Plunger extruders, tseem hu ua piston extruders, siv lub plunger reciprocating los thawb cov khoom los ntawm kev tuag. Hom extruder no feem ntau yog siv rau cov ntaub ntawv uas nyuaj rau txheej txheem nrog cov ntsia hlau extruders, xws li tej yam ceramics thiab hlau. Plunger extruders tuaj yeem ncav cuag qhov siab heev thiab yog li tsim nyog rau cov ntawv thov uas xav tau siab ceev thiab lub zog extrudates.
4. Ntawv extruders
Sheet extruders yog cov tshuab tshwj xeeb rau kev tsim cov ntawv tiaj tus. Lawv feem ntau siv ua ke ntawm ib qho los yog ntxaib ntsia hlau extruder thiab tuag rau extrude cov khoom rau hauv ib daim ntawv. Cov ntawv extruded tuaj yeem txias thiab txiav rau hauv qhov ntau thiab tsawg tsim nyog rau ntau yam kev siv, nrog rau kev ntim khoom, kev tsim kho thiab cov khoom siv tsheb.
5.blown zaj duab xis extruder
Tshuab tshuab extruder yog cov txheej txheem tshwj xeeb siv los tsim cov yeeb yaj kiab yas. Nyob rau hauv cov txheej txheem no, molten yas yog extruded los ntawm ib ncig tuag thiab ces nthuav mus ua npuas. Cov npuas txias thiab ntsws kom tsim ib zaj duab xis tiaj tus. Blown film extruders yog siv dav hauv kev lag luam ntim khoom los tsim cov hnab, qhwv ntawv thiab lwm yam khoom ntim tau yooj yim.
Cia peb qhia peb lub tuam txhabLQ 55 Ob-txheej co-extrusion zaj duab xis tshuab tshuab Chaw tsim khoom (Xov xwm dav 800MM)
Lub extruder muaj ntau yam tseem ceeb uas ua haujlwm ua ke kom ua tiav cov khoom siv:
Hopper: Lub hopper yog qhov twg cov khoom siv raw khoom thauj mus rau hauv lub tshuab. Nws yog tsim los pub cov khoom siv tsis tu ncua rau hauv extruder.
Ntsia Hlau: Cov ntsia hlau yog lub plawv ntawm extruder. Nws yog lub luag haujlwm rau conveying, melting thiab sib tov cov khoom raw thaum nws hla lub thoob.
chim: Lub thoob yog lub plhaub cylindrical uas muaj cov ntsia hlau. Lub thoob muaj cov khoom cua sov rau melting cov khoom thiab tej zaum yuav muaj cua txias rau kev tswj kub.
Tuag: Cov tuag yog cov khoom uas molds cov khoom extruded rau hauv cov duab xav tau. Cov tuag tuaj yeem raug kho los tsim ntau yam khoom xws li yeeb nkab, ntawv lossis zaj duab xis.
Cooling System: Tom qab cov khoom tawm ntawm qhov tuag, nws feem ntau yuav tsum tau txias kom khaws nws cov duab. Cov tshuab cua txias tuaj yeem suav nrog cov dej da dej, cua txias, lossis txias yob, nyob ntawm daim ntawv thov.
Cov Txheej Txheem Txiav: Hauv qee qhov kev siv, cov khoom siv extruded yuav tsum tau txiav rau qhov ntev. Cov tshuab txiav tuaj yeem muab tso rau hauv cov kab extrusion kom ua kom cov txheej txheem no.
Cov txheej txheem extrusion pib nrog kev thauj khoom raw rau hauv lub hopper. Tom qab ntawd cov khoom siv raw yog muab tso rau hauv ib lub thoob qhov twg nws yog rhuab thiab melted thaum nws txav mus rau hauv cov ntsia hlau. Cov ntsia hlau yog tsim los ua kom zoo sib xyaw cov khoom siv raw thiab tso rau hauv qhov tuag. Thaum cov khoom ncav cuag qhov tuag, nws raug yuam los ntawm qhov qhib los tsim cov duab uas xav tau.
Tom qab lub extrudate tawm ntawm qhov tuag, nws txias thiab solidifies. Nyob ntawm seb hom extruder thiab cov khoom siv, lwm cov kauj ruam yuav tsum tau ua, xws li txiav, winding los yog ua ntxiv.
Extrusion yog txheej txheem tsim khoom tseem ceeb uas tso siab rau cov cuab yeej tshwj xeeb los tsim ntau yam khoom. Los ntawm ib leeg-ntsia hlau thiab ntxaib-ntsia hlau extruders rau plunger extruders thiab tshuab tshuab tshuab, txhua hom extruder muaj lub hom phiaj tshwj xeeb hauv kev lag luam. Nkag siab txog cov khoom thiab kev ua haujlwm ntawm cov tshuab no yog qhov tseem ceeb rau kev txhim kho cov txheej txheem extrusion thiab ua tiav cov txiaj ntsig zoo. Raws li kev siv thev naus laus zis txuas ntxiv mus, kev lag luam extrusion zoo li yuav pom kev tsim kho tshiab ntxiv uas yuav ua rau kom muaj txiaj ntsig thiab nthuav dav rau kev ua cov khoom siv.
Post lub sij hawm: Dec-02-2024