Ibextruder ntsia hlau thoobyog lub plawv ntawm lub yas extruder - ib tug rotating ntsia hlau nyob rau hauv ib tug rhuab chim chim uas melts yas thiab twj tso kua mis rau pem hauv ntej ntawm lub siab. Xaiv qhov yog los ntawm peb yam: tushom(ib leeg ntsia hlau, ntxaib ntsia hlau, conical los yog parallel), lubkhoomnws yuav tsum khiav (uas teev saum npoo - nitrided rau huv resins, bimetallic rau abrasive los yog corrosive sawv daws yuav), thiab nws yog li cas.teev thiab ua. Tau txais cov cai ntawd thiab nws ua haujlwm tau ntau xyoo. Phau ntawv qhia no taug kev los ntawm tag nrho peb.
Xijpeem koj extrude — yeeb nkab, profile, zaj duab xis, ntawv, compound, los yog pellets — lubextruder ntsia hlau thoobyog qhov ua haujlwm tiag tiag. Nws kuj yog ib feem uas hnav, thiab ib qho feem ntau yuav txiav txim siab seb koj cov kab khiav huv si thiab hauv spec los yog tawm tsam koj ntawm qhov zoo thiab poob qis. Phau ntawv qhia no rub tag nrho cov ntsiab lus ua ke: dab tsi lub taub hau taub hau yog dab tsi, hom, cov ntaub ntawv, yuav ua li cas kom phim ib qho rau koj cov khoom, thiab yuav ua li cas los txheeb xyuas qhov hloov uas kav ntev. Peb tau tsim cov ntsia hlau thiab cov thoob rau ntau tshaj 20 xyoo, yog li peb yuav ua kom nws ncaj thiab siv tau, thiab taw qhia koj kom tob tob qhov koj xav tau.
Dab tsi yog Extruder Ntsia Hlau Barrel?
Ibextruder ntsia hlau thoobyog lub hauv paus sib dhos ntawm cov yas extruder: ib tug precision machined ntsia hlau tig nyob rau hauv ib tug rhuab cylindrical chim. Khoom yas - pellets lossis hmoov - nkag mus rau hauv qhov kawg pub. Raws li cov ntsia hlau tig, cua sov los ntawm lub thoob thiab shear los ntawm cov ntsia hlau yaj cov khoom, thiab cov ntsia hlau geometry conveys thiab pressurizes nws, thawb ib tug uniform yaj tawm los ntawm cov tuag nyob deb kawg.
Cov ntsia hlau thiab lub thoob yog ib khub sib tw, tsis yog ob qho sib cais. Qhov me me clearance nruab nrab ntawm cov ntsia hlau ya davhlau thiab lub thoob bore yog dab tsi tswj cov zis thiab yaj zoo - qhib qhov clearance los ntawm hnav thiab lub tshuab poob ob qho tib si. Tias yog vim li cas ob qho tib si tsim, tsim, thiab hloov ua ke, thiab yog vim li cas lub taub hau ntsia hlau zaum ntawm qhov chaw ntawm cov txheej txheem extrusion lossis txhaj tshuaj.
Yuav Ua Li Cas Lub Ntsia Hlau Ua Haujlwm
Feem ntau cov ntsia hlau extruder ua lawv txoj haujlwm hla peb thaj chaw raws li qhov ntev ntawm cov ntsia hlau. Covnoj zonesiv cov khoom siv thiab pib txav mus rau pem hauv ntej. Covcompression cheeb tsam- qhov twg cov ntsia hlau channel tau ntiav - compacts thiab melts cov yas los ntawm tshav kub thiab shear. Covmetering cheeb tsamces tso cov yas molten rau pem hauv ntej ntawm ib qho chaw ruaj khov, tswj siab, npaj rau kev tuag.
Thaum tshav kub kub los ntawm ob qhov chaw: lub thoob tso cua sov thiab cov neeg kho tshuab shear ntawm cov ntsia hlau ua hauj lwm cov polymer. Sib npaug lawv zoo thiab cov khoom siv plasticizes tusyees tsis muaj overheating. Tag nrho cov khoom tsuas yog ua haujlwm vim tias qhov kaw qhov ntsia hlau-rau- chim tshem tawm - nws yog dab tsi ua kom cov yaj poob rov qab los ntawm kev ya davhlau. Tsim kom muaj kev ua siab ntev thiab qhov tawv tawv kom qhov kev tshem tawm nruj dhau lub sijhawm, uas yog vim li cas cov khoom xaiv thiab kev tsim khoom muaj teeb meem ntau npaum li cov ntsia hlau tsim.
Nyob ib ncig ntawm lub thoob zaum tso cua sov bands ua ke rau hauv ib cheeb tsam, txhua tus tuav rau qhov kub thiab txias, nrog rau txias ntawm tes kom cov yaj tsis txhob overheats. Thaum kawg, qhov tuag muab lub yaj nws cov duab kawg. Txoj hauj lwm ntawm lub rooj sib txoos yog txhais tes uas tuag cov yaj uas tsis sib xws hauv qhov kub thiab txias - vim tias muaj kev hloov pauv ntawm cov dej ntws tawm los ua qhov tsis xws luag hauv cov khoom hauv qab.
Hom Extruder Ntsia Hlau Barrel
"Screw chim" npog ntau lub cav sib txawv. Txoj cai yog nyob ntawm seb koj cov txheej txheem xav tautwjib yam khoom los yogsib tovnws.
Ib leeg ntsia hlau
A ib leeg ntsia hlaukhiav ib tug ncej nyob rau hauv ib puag ncig bore. Nws conveys thiab twj tso kua mis zoo heev, uas ua rau nws tus nqi pheej yig workhorse rau high-volume extrusion ntawm ib yam khoom zoo sib xws - yeeb nkab, profile, ntawv, zaj duab xis, thiab hlau txheej. Qhov nws tsis ua yog intensive mixing.
Twin Ntsia Hlau
Ib tug ntxaib ntsia hlau khiav ob intermeshing shafts nyob rau hauv ib daim duab-yim bore. Qhov no meshing yog lub ntsiab lus: nws muab kev sib xyaw ua ke zoo, kev xa tawm zoo, thiab kev tswj nruj ntawm lub sijhawm shear thiab qhov chaw nyob, uas yog vim li cas cov ntsia hlau ntxaib tuav kev sib xyaw ua ke, masterbatch, reactive extrusion, thiab cov ntaub ntawv nyuaj los yog ntim. Yog tias koj hnyav ob, peb phau ntawv qhiaib leeg ntsia hlau vs ntxaib ntsia hlau extrudersmus tob rau ntawm kev sib pauv.
Parallel vs Conical Twin Ntsia Hlau
Twin screws sib cais dua los ntawm cov duab. Aparallel ntxaib ntsia hlaukhaws ib txoj kab uas hla tsis tu ncua thiab siv modular,reconfigurable ntsiab - ntau yam kev xaiv rau compounding thiab siab tso zis. Aconical twin ntsia hlautapers los ntawm kev pub noj dav dav mus rau qhov nqaim tawm, muab lub caj pas loj thiab lub zog siab ntawm qhov qis qis - lub tshuab classic rau nruj PVC yeeb nkab thiab profile. Peb sib piv lawv hauv kev nthuav dav hauvconical vs parallel ntxaib ntsia hlau extruders.Twin screws kuj yog co-rotating (sib tov zoo tshaj) los yog counter-rotating (siab siab, feem ntau rau PVC).
Txhaj Molding Screw chim
Ibtxhaj tshuaj molding ntsia hlau chimua haujlwm ntawm tib lub ntsiab lus yaj-thiab-xws li tab sis yog tsim rau lub voj voog rov ua haujlwm ntawm lub tshuab txhaj tshuaj es tsis tas yuav extrusion. Qhov saum npoo thiab cov khoom siv logic hauv qab no siv rau nws ib yam nkaus.
Ntawm ib sab, ntawm no yog yuav ua li cas cov hom tseem ceeb kab:
| Hom | Zoo tshaj rau | Sib tov | Yam khoom |
|---|---|---|---|
| Ib leeg ntsia hlau | High-ntim extrusion ntawm ib yam khoom | Tsawg | Tube, profile, ntawv, zaj duab xis |
| Parallel ntxaib | Compounding, siab tso zis, yooj | Siab | Compounds, masterbatch, pellets |
| Conical ntxaib | Compact PVC yeeb nkab & profile | Siab | UPVC yeeb nkab, profile, WPC |
| Txhaj ntsia hlau | Txhaj molding voj voog | Ntau yam | Moulded qhov chaw |
Qhov twg Extruder Screw Barrels siv
Tib lub hauv paus tseem ceeb tshwm sim thoob plaws tag nrho kev lag luam plastics, teeb tsa rau txoj haujlwm ntawm tes. Nyob rau hauv cov yeeb nkab thiab profile kab nws zoo li PVC, PE, thiab PPR. Hauv zaj duab xis thiab daim ntawv nws pub cov tuag uas ua rau ntim thiab board. Hauv kev sib xyaw ua ke nws muab cov polymers nrog cov muab tub lim, cov xim, thiab cov khoom ntxiv rau hauv cov pellets, thiab nws ua haujlwm masterbatch ntau lawm. Nws tsav cov kab rov ua dua tshiab uas rov ua dua cov khoom seem thiab rov ua dua, cable thiab hlau txheej, thiab cov khoom siv rov ua dua tshiab hauv cov tshuab txhaj tshuaj molding. Nyob qhov twg cov yas yog yaj thiab zoo li tus, ib tug ntsia hlau thiab chim yog ua lub melting. Yuav ua li cas hloov ntawm ib qho kev lag luam mus rau lwm qhov yog hom, qhov chaw, thiab cov duab geometry - uas yog vim li cas qhov kev ceev faj tshwj xeeb tshaj li tus lej catalog.
Screw chim khoom thiab kev kho deg
Lub taub hau ntsia hlau nyob hauv qhov chaw rau txim - kub, siab, kev sib txhuam, thiab feem ntau abrasive lossis corrosive cov ntaub ntawv. Lub hauv paus hlau muab nws lub zog; kev kho deg muab nws hnav thiab corrosion kuj. Ob qhov chaw dominate.
Base Steel thiab Nitriding
Lub hauv paus feem ntau yog nitriding hlau xws li38CrMoAlA. Gas nitriding hardens cov ntaub ntawv nyias ntawm qhov chaw, muab kev hnav zoo rau kev huv, unfilled resins xws li PE, PP, thiab ABS ntawm tus nqi tsim nyog. Ib nitridedntsia hlau lub cevyog qhov kev xaiv pheej yig, txhim khu kev qha thaum cov khoom tsis tshwj xeeb yog abrasive lossis corrosive.
Bimetallic
Rau abrasive los yog corrosive lub luag hauj lwm, lub bimetallic chim fuses ib tug ntau nyuaj, thicker alloy txheej nyob rau hauv lub bore - npib tsib xee-raws li rau corrosion, tungsten-carbide-nplua nuj rau abrasion - dhau ib tug tawv puag steel. Nws raug nqi ntau dua, tab sis nws kav ntev dua qhov twg qhov chaw nitrided yuav hnav los ntawm. Ntawm peb tus kheej bimetallic barrels peb coj lub bore mus rau ib ncig ntawm 62 HRC, qhov twg ntau lub khw nres ntawm 58. Qhov kev sib piv tag nrho yog nyob rau hauv peb phau ntawv qhia.bimetallic vs nitrided ntsia hlau chim.
Lub Ntsia Hlau Tau Kho Ib Yam
Nto hardening tsis yog ib txoj hauj lwm thoob. Raws li nitriding, ntsia hlau ya dav hlau feem ntau hardfaced - ib tug hnav-resistant alloy welded mus rau lub davhlau ya nyob twg, qhov siab tshaj plaws-hnav taw tes ntawm cov ntsia hlau - yog li cov ntsia hlau ua raws li lub bore. Yog hais tias ib tug ntsia hlau thiab chim hnav ntawm tus nqi sib txawv, lub clearance drifts tawm thiab zoo raug kev txom nyem, yog li ntawd ob hardened mus ua hauj lwm thiab hnav raws li ib tug matched khub, tsis raws li ib tug nyias muaj nyias ib feem.
Sib piv cov ntsia hlau chim rau koj cov khoom
Qhov no yog qhov kev txiav txim siab ntawm lub taub hau feem ntau yeej lossis poob. Cov khoom koj khiav teeb tsa qhov chaw koj xav tau - tsis yog lwm txoj hauv kev. Daim ntawv qhia ceev:
| Khoom siv | Main kev hem thawj rau lub thoob | Pom zoo nto |
|---|---|---|
| Ntxuav PE / PP / ABS | Hnav me me | Nitrided |
| Rigid PVC | Corrosion + ib co abrasion | Bimetallic (nickel-based) |
| iav-filled / mineral-filled | Kev puas tsuaj hnyav | Bimetallic (carbide nplua nuj) |
| WPC (ntoo + muab tub lim) | Kev puas tsuaj loj (+ corrosion yog PVC-raws li) | Bimetallic (carbide nplua nuj) |
| Recycled / contaminated pub | Abrasion + tsis paub | Bimetallic |
Ob yam ntaub ntawv tsim nyog lawv tus kheej playbook.PVCyog corrosive vim nws tso hydrochloric acid thaum nws ua, yog li nws xav tau ib tug corrosion-resistant bimetallic nto.WPCyog ib qho ntawm cov khoom siv abrasive tshaj plaws hauv extrusion, ua tsaug rau nws cov ntoo thiab cov ntxhia pob zeb, yog li nws xav tau cov txheej txheej nyuaj tshaj plaws uas koj tuaj yeem muab tso rau hauv qhov bore. Spec qhov nto rau cov khoom siv, txhua lub sijhawm.
Cov ntsiab lus tseem ceeb: Txoj kab uas hla, L / D thiab Compression
Tshaj li hom thiab nto, ob peb qhov tshwj xeeb zoo li cas lub taub hau ntsia hlau ua haujlwm. Koj tsis tas yuav yog tus tsim qauv ntsia hlau rau qhov chaw, tab sis nws pab kom paub tias lawv txhais li cas.
- Txoj kab uas hla- qhov loj me rau koj lub tshuab thiab lub hom phiaj tso zis. Screws thiab chim yog ua nyob rau hauv ib tug ntau yam ntawm diameters kom haum txhua yam los ntawm me me profile kab mus rau loj extruders.
- L/D ratio- tus ntsia hlau ntev muab faib los ntawm nws txoj kab uas hla. L / D ntev dua muab sijhawm rau yaj thiab sib tov; ib tug luv luv yog ntau compact. Tus nqi tsim nyog nyob ntawm cov khoom siv thiab txheej txheem.
- Compression ratio- Ntau npaum li cas cov ntsia hlau channel ntiav los ntawm pub rau metering. Siab compression ua hauj lwm ib co ntaub ntawv nyuaj; Thaum tshav kub kub-rhiab polymers zoo li PVC nyiam ib tug softer piv.
Cov no tau teeb tsa rau cov khoom siv thiab kev ua haujlwm, uas yog vim li cas ib lub thoob ua-rau-spec yeej ib txwm muaj. Muab koj tus tsim lub tshuab, cov khoom siv, thiab cov zis, thiab cov duab geometry ua raws li ntawm qhov ntawd.
Tej teeb meem uas lawv taw tes rau
Thaum ib kab drifts tawm ntawm spec, txoj kev feem ntau coj rov qab mus rau lub hau thiab lub thoob. Kev kuaj mob sai:
- Cov zis poob ntawm tib lub hau ntswj ceev- hnav clearance, classic thawj kos npe.
- Surging lossis tsis ruaj khov- hnav, los yog qhov teeb meem pub los yog kub.
- Dub specks thiab degradation- cov khoom nyob rau hauv qhov chaw hnav los yog zaum ntawm qhov chaw corroded.
- Kev sib xyaw tsis zoo los yog cov khoom siv tsis raug- hom ntsia hlau tsis raug rau txoj hauj lwm, lossis ib lub hau ntswj hnav.
- Pitting ntawm lub hau ntswj los yog bore- corrosion, feem ntau yog qhov tsis ncaj ncees lawm ntawm cov khoom.
Ib qho kev mob tshwm sim tuaj yeem muaj ntau yam ua rau, tab sis ob lossis peb ua ke yuav luag ib txwm taw qhia rau lub cev hnav lossis tsis raug cai. Kev ntsuas qhov hnav qhia koj qhov twg - thiab seb qhov kho puas yog kho lossis hloov pauv.
Hnav, tu thiab hloov
Txhua lub hau ntsia hlau hnav thaum kawg - tib lo lus nug yog ceev npaum li cas, thiab qhov ntawd nyob ntawm cov khoom siv thiab lub tshuab ua haujlwm li cas. Hnav pom tau tias poob tawm ntawm tib lub hau ntswj ceev, surge, tsis zoo sib xyaw, dub specks, los yog nce melt kub. Qhov ua rau yog qhov clearance ntawm cov ntsia hlau thiab lub thoob qhib rau yav dhau los kam rau ua.
Thaum koj pom cov paib, ntsuas ua ntej koj ua: lub hau ntswj dav dav, lub thoob bore, thiab radial clearance tawm tsam tus thawj spec. Qee zaum cov ntsia hlau tuaj yeem rov tsim dua thaum lub thoob tseem zoo; Thaum lub bore hnav dhau los ua siab ntev, kev hloov pauv feem ntau yog kev txhim kho kev lag luam. Peb qhia rauthaum twg los hloov ib lub taub hau ntsia hlautaug kev los ntawm kev ntsuas hnav thiab txiav txim siab kho qhov hloov pauv. Ob peb tus cwj pwm ua rau lub neej ua haujlwm: phim qhov chaw rau cov khoom siv, khaws cov khoom paug tawm ntawm cov khoom noj, tuav qhov kub thiab txias hauv qhov ntau, thiab ntsuas kev nyeem ntawv ntawm txhua qhov kev pabcuam.
Yuav Ua Li Cas Xaiv thiab Qhia Txog Extruder Screw Barrel
Rub nws ua ke, xaiv lub hau ntsia hlau yog peb qhov kev txiav txim siab hauv kev txiav txim:hom, cesnto, cesspecification. Ua hauj lwm los ntawm lawv thiab koj yuav tsis mus deb yuam kev.
- Hom- Koj cov txheej txheem puas tso ib qho khoom siv (ib lub hau ntswj) lossis sib xyaw thiab sib xyaw ua ke (ntsuab ntxaib)? Compact PVC lossis profile ua haujlwm cov ntsiab lus rau conical; siab tso zis thiab yooj taw tes rau parallel.
- Nto- nitrided rau huv resins, bimetallic rau abrasive los yog corrosive cov ntaub ntawv. Thaum tsis ntseeg ntawm cov khoom siv los yog PVC, mus rau bimetallic.
- Specification- txoj kab uas hla, L / D, thiab compression haum rau koj lub tshuab, cov khoom siv, thiab cov zis.
Txhawm rau kom tau txais cov lus qhia meej thiab lub thoob uas poob ncaj qha rau hauv, muab koj lub tshuab tsim thiab cov qauv, lub hau ntswj thiab L / D (los yog daim duab qub), cov khoom siv thiab muab tub lim, thiab lub hom phiaj tso zis. Tsis muaj duab? Ib qho piv txwv hnav yog txaus rau rov qab-engineer ib qho kev hloov pauv tiag tiag - lossis ib qho kev hloov kho tshiab nrog lub ntsej muag tawv dua li qhov koj so haujlwm.
Vim Li Cas Ua Haujlwm Nrog Nanhaiya
Peb tau siv ntau tshaj nees nkaum xyoo tsim extruder screws thiab chim ntawm txhua hom -ib leeg ntsia hlau, parallel ntxaib ntsia hlau, conical twin ntsia hlau, thiabtxhaj tshuaj molding- nyob rau hauv 38CrMoAlA nitrided steel thiab bimetallic alloys, nrog bimetallic bore hardness mus txog 62 HRC, kam rau ua, thiab dynamic tshuav nyiaj li cas ntsuam xyuas ntawm txhua lub teeb. Nrog ntau tshaj 500 tus neeg siv khoom thiab ntau tshaj li ob xyoo lawm ntawm kev paub, peb tsim cov kev hloov pauv tau nrog cov hom loj xws li KraussMaffei, Cincinnati, thiab Jwell, ua haujlwm los ntawm koj lub tshuab qauv, kos duab, lossis qauv. Qhia rau peb koj cov khoom siv, tshuab, thiab cov khoom tso tawm, thiab koj yuav muaj cov lus pom zoo thiab cov lus pom zoo hauv kaum ob teev.
Xav tau lub taub hau taub hau zoo, lossis hloov rau koj txoj kab? Xa koj lub tshuab, khoom siv, thiab cov khoom tso tawm - tau txais kev pom zoo thiab nqe lus hauv 12 teev.
Tau txais ib daim QuoteCov lus nug nquag
Dab tsi yog qhov extruder ntsia hlau chim?
Nws yog lub hauv paus ua haujlwm ntawm cov yas extruder - ib tug rotating ntsia hlau nyob rau hauv ib tug rhuab chim chim. Nws siv cov khoom yas ntawm ib qho kawg, melts nws nrog cua sov thiab shear, thiab twj tso kua mis ib yam nkaus yaj tawm mus rau lwm qhov kawg ntawm lub siab ruaj khov. Cov ntsia hlau thiab lub thoob ua hauj lwm raws li ib tug matched khub, thiab me me clearance ntawm lawv tswj cov zis thiab zoo.
Dab tsi yog extruder ntsia hlau thoob ua los ntawm?
Lub hauv paus feem ntau yog nitriding hlau zoo li 38CrMoAlA, hardened los ntawm roj nitriding rau huv resins. Rau abrasive los yog corrosive cov ntaub ntawv nws yog bimetallic - ib tug nyuaj, hnav- thiab corrosion-resistant alloy txheej fused nyob rau hauv lub bore tshaj ib tug tawv puag steel. Qhov saum npoo yog xaiv rau cov khoom koj khiav.
Dab tsi yog hom ntsia hlau loj?
Ib leeg ntsia hlau thiab twin ntsia hlau. Twin ntsia hlau splits rau hauv parallel thiab conical, thiab rau hauv co-rotating thiab counter-rotating, ntxiv rau muaj kev txhaj tshuaj molding ntsia hlau chim. Ib leeg ntsia hlau twj tso kua mis rau high-volume extrusion; ntxaib screws sib tov thiab compound; conical ntxaib suit compact PVC thiab profile kab.
Lub extruder ntsia hlau thoob kav ntev npaum li cas?
Ib qho kev tu zoo feem ntau kav li ntawm 3 mus rau 10 xyoo. Nws nyob ntawm cov khoom siv, kev kho deg, kev ua haujlwm, thiab kev saib xyuas - cov ntaub ntawv abrasive thiab corrosive shorten nws, huv si resins thiab bimetallic nto txuas mus rau nws.
Kuv yuav xaiv qhov zoo li cas?
Peb kauj ruam: xaiv hom koj cov txheej txheem xav tau, xaiv qhov chaw rau koj cov khoom, ces phim txoj kab uas hla, L / D, thiab compression rau txoj haujlwm. Muab tus tsim koj lub tshuab qauv, cov khoom siv, thiab cov khoom tso tawm - daim duab lossis qauv ua kom nws meej.
Koj puas tuaj yeem hloov pauv rau txhua lub tshuab hom?
Yog lawm. Peb tsim hloov cov ntsia hlau thiab cov thoob uas haum rau cov extruder loj thiab cov tshuaj txhaj tshuaj - KraussMaffei, Cincinnati, Jwell - los ntawm koj lub tshuab qauv, kos duab, lossis qauv. Xa cov ntsiab lus rau nqe lus tsis pub dhau 12 teev.
