Taw qhia rau Yas Extrusion
Yas extrusion yog ib qho ntawm cov txheej txheem tsim khoom siv dav tshaj plaws hauv kev lag luam yas, tshwj xeeb tshaj yog rau cov thermoplastics. Zoo ib yam li kev txhaj tshuaj molding, extrusion yog ua haujlwm los tsim cov khoom siv txuas ntxiv, xws li cov kav dej, tubing, thiab qhov rooj profiles. Niaj hnub nimno thermoplastic extrusion tau ua lub cuab yeej muaj zog rau ze li ib puas xyoo, ua kom muaj cov khoom ntim ntau ntawm cov khoom txuas mus ntxiv. Cov neeg siv khoom koom tes nrog cov tuam txhab yas extrusion los tsim kho cov yas extrusion rau lawv cov kev xav tau tshwj xeeb.
Kab lus no delves rau hauv cov hauv paus ntsiab lus ntawm yas extrusion, piav qhia txog yuav ua li cas cov txheej txheem ua haujlwm, cov khoom siv thermoplastic tuaj yeem raug extruded, dab tsi cov khoom feem ntau tsim los ntawm cov yas extrusion, thiab yuav ua li cas yas extrusion piv rau txhuas extrusion.
Cov txheej txheem yas Extrusion
Yuav kom nkag siab txog cov txheej txheem yas extrusion, nws yog ib qho tseem ceeb kom paub tias lub extruder yog dab tsi thiab nws ua haujlwm li cas. Feem ntau, ib qho extruder muaj cov hauv qab no:
Hopper: Khaws cov ntaub ntawv yas raw.
Pub caj pas: Pub cov yas los ntawm lub hopper rau hauv lub thoob.
Rhaub Barrel: Muaj cov ntsia hlau uas tau tsav los ntawm lub cev muaj zog, uas thawb cov khoom mus rau qhov tuag.
Breaker Phaj: Nruab nrog lub vijtsam los lim cov khoom siv thiab tswj lub siab.
Feed Pipe: Hloov cov khoom molten los ntawm lub thoob mus rau qhov tuag.
Tuag: Hloov cov khoom rau hauv qhov xav tau profile.
Txias System: Ua kom lub cev muaj zog ntawm qhov extruded.
Cov txheej txheem yas extrusion pib los ntawm kev sau lub hopper nrog cov khoom siv raw, xws li pellets lossis flakes. Cov khoom siv yog nqus tau los ntawm lub caj pas pub rau hauv lub thoob ntawm lub extruder. Raws li cov khoom nkag mus rau hauv lub thoob, nws yog rhuab los ntawm ntau qhov chaw cua sov. Nyob rau tib lub sijhawm, cov khoom raug thawb mus rau qhov kawg ntawm lub thoob los ntawm cov ntsia hlau reciprocating, uas tau tsav los ntawm lub cev muaj zog. Cov ntsia hlau thiab lub siab ua kom muaj cua sov ntxiv, yog li cov cua sov yuav tsum tsis txhob kub li qhov kawg extrusion kub.
Cov yas molten tawm hauv lub thoob los ntawm ib qho kev tshuaj ntsuam ntxiv los ntawm lub phaj tawg, uas tshem tawm cov kab mob thiab ua kom lub siab tsis sib xws hauv lub thoob. Cov khoom siv ces dhau los ntawm cov yeeb nkab pub rau hauv kev cai tuag, uas muaj qhov qhib zoo li qhov xav tau extruded profile, tsim cov yas extrusion kev cai.
Raws li cov khoom raug yuam los ntawm kev tuag, nws yuav siv sij hawm rau cov duab ntawm qhov tuag qhib, ua tiav cov txheej txheem extrusion. Lub extruded profile yog ces txias nyob rau hauv ib da dej da dej los yog los ntawm ib tug series ntawm txias yob rau solidify.
Yas Extrusion
Yas extrusion yog tsim rau ntau yam ntaub ntawv thermoplastic, rhuab mus rau lawv cov ntsiab lus melting tsis ua rau thermal degradation. Qhov kub extrusion txawv nyob ntawm seb cov yas tshwj xeeb. Common extrusion plastics muaj xws li:
Polyethylene (PE): Extrudes ntawm 400 ° C (tsawg-density) thiab 600 ° C (siab-density).
Polystyrene (PS): ~ 450 ° C
Nylon: 450 ° C txog 520 ° C
Polypropylene (PP): ~ 450 ° C
PVC: Ntawm 350 ° C thiab 380 ° C
Qee zaum, elastomers lossis thermosetting plastics tuaj yeem raug extruded es tsis txhob siv cov thermoplastics.
Daim ntawv thov ntawm Yas Extrusion
Cov tuam txhab yas extrusion tuaj yeem tsim ntau yam ntawm cov khoom nrog cov profiles zoo ib yam. Yas extrusion profiles yog zoo tagnrho rau cov kav dej, qhov rooj profiles, automotive qhov chaw, thiab lwm yam.
1. Cov kav dej thiab cov kav dej
Cov kav dej yas thiab tubing, feem ntau ua los ntawm PVC los yog lwm yam thermoplastics, yog cov yas extrusion daim ntaub ntawv vim lawv yooj yim cylindrical profiles. Ib qho piv txwv yog cov kav dej extruded.
2. Hlau rwb thaiv tsev
Ntau cov thermoplastics muaj cov hluav taws xob zoo heev thiab thermal stability, ua rau lawv haum rau extruding rwb thaiv tsev thiab sheathing rau cov xov hlau thiab cables. Fluoropolymers kuj tseem siv rau lub hom phiaj no.
3. Qhov rooj thiab qhov rai Profiles
Yas qhov rooj thiab qhov rais thav duab, yam ntxwv los ntawm lawv cov nruam profiles thiab ntev, yog zoo meej rau extrusion. PVC yog cov khoom siv nrov rau daim ntawv thov no thiab lwm yam khoom siv hauv tsev muaj feem xyuam rau cov yas extrusion profiles.
4. Qhov muag tsis pom kev
Qhov muag tsis pom, muaj ntau yam zoo tib yam slats, tuaj yeem extruded los ntawm thermoplastics. Cov profiles feem ntau luv luv, qee zaum nrog ib sab sib npaug. Polystyrene feem ntau yog siv rau faux ntoo blinds.
5. Huab cua Stripping
Cov tuam txhab yas extrusion feem ntau tsim cov huab cua stripping khoom, tsim kom haum snugly nyob ib ncig ntawm lub qhov rooj thiab qhov rais thav ntawv. Roj hmab yog ib yam khoom siv rau huab cua stripping.
6. Windshield Wipers thiab Squeegees
Automotive windshield wipers feem ntau extruded. Cov yas extruded tuaj yeem yog cov khoom siv roj hmab hluavtaws xws li EPDM, lossis kev sib xyaw ntawm cov hluavtaws thiab cov roj hmab ntuj. Phau ntawv squeegee blades ua haujlwm zoo ib yam li cov ntaub thaiv npog.
Yas Extrusion vs. Aluminium Extrusion
Dhau li ntawm cov thermoplastics, txhuas kuj tuaj yeem raug extruded los tsim cov khoom txuas ntxiv. Qhov zoo ntawm aluminium extrusion muaj xws li lub teeb yuag, conductivity, thiab recyclability. Feem ntau siv rau txhuas extrusion muaj xws li tuav, raj, xaim, kav, laj kab, ntsia hlau, ncej, thiab cua sov dab dej.
Tsis zoo li cov yas extrusion, aluminium extrusion tuaj yeem yog kub lossis txias: kub extrusion yog ua los ntawm 350 ° C thiab 500 ° C, thaum txias extrusion yog ua nyob rau hauv chav tsev kub.
Xaus
Yas extrusion, tshwj xeeb tshaj yog nyob rau hauv cov ntsiab lus ntawm Tuam Tshoj Plastic Yeeb Nkab Extrusion Kab, yog ib tug ntau yam thiab npaum txoj kev uas yuav ua tau mus tas li profile qhov chaw. Nws lub peev xwm los lis ntau yam thermoplastics thiab nws cov kev siv dav dav ua rau nws tseem ceeb hauv kev lag luam yas tsim.
Post lub sij hawm: Lub Xya hli ntuj-16-2024