Dab tsi yog qhov sib txawv ntawm kev faib tawm thiab kev sib xyaw ua ke?
Xav txog kev faib khoom raws li lo lus nug ntawm qhov chaw thiab kev sib cais raws li cov lus nug ntawm qhov loj ntawm cov domains lossis agglomerates. Tsiv cov pigment loj loj mus rau lwm qhov ntawm cov yaj hloov nws qhov chaw. Ua kom cov clump mus rau me me agglomerates hloov nws dispersion. Ib qho txiaj ntsig tsis tsim qhov lwm qhov.
| Lus nug | Kev sib xyaw ua ke | Dispersive sib tov |
|---|---|---|
| Yuav hloov li cas? | Spatial uniformity ntawm cov khoom. | Agglomerate los yog dispersed-theem loj. |
| Qhov dej ntws ua dab tsi? | Split, reorient thiab recombine cov ntaub ntawv. | Siv cov kev ntxhov siab txaus rau deformation lossis tawg. |
| Peb yuav tsum tshuaj xyuas dab tsi? | Kev sib xyaw lossis xim sib xws ntawm cov qauv uas tau hais tseg. | Tseem tshuav agglomerates lossis theem morphology. |
| Dab tsi yog qhov pov thawj tsis txaus? | Ib qho me me me me hauv ib qho qauv cais. | Ib tug uniform-zoo li pellet xim. |
Qhov txawv yog piav nyob rau hauvNC State Extension's screw-functionality guide. Feem ntau cov ntsiab lus tiag tiag pab txhawb rau ob txoj kev. Cov lus nug muaj txiaj ntsig yog seb cov khoom puas tau txais qhov nyiaj tshuav, tsis yog tias cov khoom muaj nyob rau hauv ib qeb.
Rau kev yuav khoom, sau cov txiaj ntsig xav tau raws li qhov xav tau pom. Txheeb xyuas qhov yuav tsum tau ua kom zoo li qub, uas cov agglomerates lossis theem nta tsis tuaj yeem lees txais, thiab qhov chaw kuaj yuav qhia lawv li cas. Ib qho kev thov rau "kev sib xyaw zoo dua" ua rau cov kev txiav txim siab tsis tau daws.
Phau ntawv qhia no txhawj xeeb txog kev sib koom ua ke ntxaib-ntsia hlau sib txuas. Tsim kom muaj lub luag haujlwm ntawm cov cuab yeej ua ntej yog tias koj tab tom sib piv cov kab ib leeg-ntsia hlau los yog cov txheej txheem kev sib hloov ntawm PVC. Pebib leeg-ntsia hlau tiv thaiv ntxaib-ntsia hlau cov ntaub ntawv qhiahais txog qhov kev xaiv dav dua.
Tshawb xyuas qhov tsis xws luag ua ntej hloov cov ntsia hlau
Piav qhov tsis xws luag ua ntej lub npe hloov lub caij. Peb yuav thov cov qauv khi rau tib lub sijhawm ua haujlwm raws li lub feeder, ceev, kub thiab thauj cov ntaub ntawv. Ib qho piv txwv uas tsis muaj nws cov txheej txheem ua rau nws nyuaj rau kev paub qhov txawv ntawm qhov teeb meem rov ua dua los ntawm kev cuam tshuam ib ntus.
| Kev soj ntsuam | Cov ntaub ntawv pov thawj peb yuav thov | Thawj qhov kev txiav txim siab |
|---|---|---|
| Xim hloov raws sijhawm | Lub sij hawm-labelled qauv thiab feeder xa cov ntaub ntawv. | Tshawb xyuas qhov sib npaug ntawm koob tshuaj ua ntej hloov geometry. |
| Pom pom specks | Ntu lossis micrographs piv nrog cov khoom xyaw tuaj. | Txheeb xyuas cov agglomerates, cov khoom uas tsis tau yaj, degradation los yog paug. |
| Ib qho teeb meem pib tom qab hloov daim ntawv qhia | Yav dhau los thiab tam sim no formulations, pub cov ntaub ntawv thiab chaw. | Cais ib qho kev ua haujlwm tshiab los ntawm kev hnav tsis zoo. |
Qhov kuv kuaj ua ntej pom zoo kom muaj zog sib xyaw
Thaum kuv ntsuam xyuas qhov teeb meem ntxaib-ntsia hlau sib xyaw, kuv thawj zaug cais cov tsis sib xws ntawm cov khoom uas tsis tau tawg. Pom pom specks nyob rau hauv ib qho qauv pellet tsis txaus los ua pov thawj qhov muaj zog kneading seem. Kuv thov rau qib resin, daim ntawv ntxiv thiab kev thauj khoom, kev teeb tsa ntsia hlau tam sim no, cov ntaub ntawv pub mis, thiab cov qauv sau raws li kev ua haujlwm ruaj khov.
Kuv cov kauj ruam tom ntej yog los tsim cov specks tiag tiag yog dab tsi. Kuv yuav tshuaj xyuas cov ntu ntawm cov khoom siv thiab sib piv qhov tsis xws nrog cov khoom xyaw qub. Agglomerated pigment, unmelted resin thiab cov khoom degraded yuav tsum muaj cov lus teb sib txawv. Ntxiv kev sib xyaw ua ke ua ntej txheeb xyuas qhov tsis xws luag tuaj yeem xa cov kev tshawb nrhiav tsis ncaj ncees lawm. Qhov sib txawv ntawm qhov tsis zoo melting thiab kev sib xyaw tsis zoo kuj yog qhov ceeb toom hauv nruab nrabJim Frankland ib leeg-ntsia hlau sib xyaw kev taw qhia.
Rau kev tshuaj xyuas cov ntsia hlau, kuv xav txog qhov dav ntawm disc, thaiv qhov ntev, lub kaum sab xis stagger thiab conveying kev taw qhia ua ke. Kuv kuj tshawb xyuas cov khoom nyob ib puag ncig, pub qhov chaw thiab ntsuas kev tshem tawm. Lub kneading block tsis tuaj yeem ntsuas tau zoo los ntawm nws lub kaum ntse ntse. Nws txoj hauj lwm nyob rau hauv tus txheej txheem thiab cov ntaub ntawv tej yam kev mob nkag mus rau nws tseem ceeb.
Ua ntej pom zoo rau kev hloov pauv, kuv yuav tsim ib lub hauv paus rau kev nkag mus, qhov tseeb ntawm qhov kub thiab txias, tsav thauj khoom thiab qhov ntsuas qhov zoo. Tom qab ntawd kuv yuav muab piv rau ib qho kev hloov pauv uas tsim nyog tom qab cov txheej txheem tau ruaj khov, ua kom cov qauv tsim thiab qauv qauv zoo ib yam. Yog tias kev pub mis tsis ruaj khov lossis cov khoom siv uas twb muaj lawm raug hnav, kuv yuav daws cov teeb meem no ua ntej siv cov khoom sib xyaw tshiab kom them rov qab.
Kuv qhov kev lees paub yog qhov pom zoo cov khoom specification. Ib qho kev teeb tsa uas tshem tawm cov agglomerates pom tab sis ua rau qhov xav tau fiber ntau morphology lossis tshaj qhov kev txwv kev ua haujlwm tsis yog qhov kev txhim kho tsim nyog. Kuv yuav khaws cov kev teeb tsa uas muab cov kev sib xyaw uas yuav tsum tau ua nyob rau hauv cov kab thermal thiab mechanical txwv, es tsis txuas ntxiv kev txwv vim tias lub tshuab tuaj yeem zam tau.
Yuav ua li cas ntxaib-ntsia hlau extruders tsim kev sib xyaw
Flow rearrangement thiab kev ntxhov siab hauv zos ua haujlwm sib txawv
Kev faib tawm yog los ntawm kev sib cais, ncab thiab rov kho cov khoom. Dispersive kev txiav txim yuav tsum muaj kev ntxhov siab txaus los deform ib theem dispersed los yog kov yeej tsis kam nyob rau hauv ib qho agglomerate. Shear thiab extensional flow piav qhia txog cov txheej txheem deformation; lawv tsis yog cais cov hom phiaj zoo uas hloov kev faib khoom thiab dispersion.
Charlie Martin tuskev tshuaj xyuas ntawm ntxaib-ntsia hlau txuas txuas ntxivpiav qhia txog kev sib cuam tshuam ntawm cov ntsiab lus ntawm cov ntsia hlau, cov cheeb tsam ua tiav thiab cov khoom xa tawm. Nws cov cuab yeej sib tham yog pab tau ntawm no; tshuaj formulation tej yam kev mob nyob rau hauv qhov kev tshuaj xyuas yuav tsum tsis txhob muab xa mus rau ib tug industrial plastics daim ntawv qhia.
Ceev yog ib qho kev tawm tswv yim, tsis yog qhov kev lees paub
Rau kev txhais lus hauv zos shear-flow, kev ntxhov siab nyob ntawm cov khoom siv viscosity ntawm qhov ntsuas kub thiab deformation tus nqi. Ib daim duab rpm ib leeg tsis txhais cov xwm txheej, raws li qhovparticle-tracking sib piv hauv qab noua piv txwv. Sib piv qhov kev hloov pauv ceev nrog rau qhov kub thiab txias, tus nqi pub thiab cov txiaj ntsig tau zoo, tsis yog siv qhov nrawm los hloov qhov ntsuas kev sib cais.
Saib dhau lub sijhawm nyob nruab nrab
Lub sij hawm nyob hauv kev faib khoom piav qhia ntev npaum li cas cov khoom sib txawv ntawm cov khoom tseem nyob hauv tus txheej txheem. Rau qhov kev tshuaj xyuas luv luv, nug qhov twg tus neeg taug qab nkag mus, qhov twg nws raug kuaj pom thiab siv cov kev ua haujlwm twg. Tus nqi txhais tau tias tsis muaj cov ntaub ntawv no tsis txaus los sib piv ob layouts.
Peb cov ntaub ntawv pov thawj pom zoo cais cov tswv yim los ntawm cov txiaj ntsig. Sau cov chaw thiab cov khoom xa tuaj raws li kev nkag; sau cov khoom tiav qhov sib xws thiab morphology raws li qhov tshwm sim. Khaws kub thiab thauj khoom raws li kev txwv kev ua haujlwm. Cov qauv no txwv tsis pub cov ntawv tshaj tawm mus sib hais los ntawm kev hu xov tooj rau lub zog ntau dua ib qho kev txhim kho zoo ua ntej cov khoom raug soj ntsuam.
Extruder ntsia hlau ntsiab thiab lawv cov kev sib xyaw ua haujlwm
Ib tsev neeg lub tsev yog ib qho tseem ceeb pib daim ntawv lo, tsis yog ib qho kev ua tiav tiav.NC State's Element Guidedistinguishes conveying, thim rov qab, kneading thiab toothed ntsiab thiab piav qhia tias nomenclature txawv ntawm manufacturers. Peb yuav siv qhov kos duab tiag tiag thiab geometry, tsis yog hloov lwm tus neeg muag khoom tus lej rau cov lus hais.
| Tsev neeg Element | Lub luag haujlwm los tshuaj xyuas | Yam peb yuav thov |
|---|---|---|
| Kev xa tawm | Kev thauj mus los thiab hauv zos filling cov xwm txheej. | Lead, ntev, handedness thiab nyob sib ze txwv. |
| Kneading thaiv | Deformation, sib tov thiab conveying lossis txwv. | Disc dav, suav, tag nrho ntev, stagger thiab conveying kev taw qhia. |
| Toothed los yog tshwj xeeb tov khoom | Flow rearrangement thiab geometry-nyob ntawm kev nyuaj siab raug. | Ua kom tiav profile, txoj haujlwm ua haujlwm thiab cov ntaub ntawv pov thawj rau txoj haujlwm npaj. |
Tsis txhob xav tias cov khoom xa tawm tsis muaj dab tsi rau kev sib xyaw, lossis tias txhua lub ntsiab lus toothed tsuas yog faib tawm xwb. Kev sib piv txoj cai yog nruab nrab ntawm cov geometries uas tau teev tseg. Tsim kom muaj seb daim duab piav qhia txog kev sib dhos segmented los yog ib qho ntsia hlau ua ntej sib tham txog kev hloov pauv.
Pebco-rotating parallel twin ntsia hlau chimnplooj ntawv khoom txheeb xyuas tib txoj kev sib hloov, intermeshing thiab compounding daim ntaub ntawv. Cov ntsiab lus no tsim cov khoom siv uas cuam tshuam. Rau ib qho kev txiav txim, qhov kev pom zoo configuration tseem yuav tsum tau txheeb xyuas tus neeg ua hauj lwm seem thiab mating interfaces.
Ntsia hlau tsim nta uas tswj kev sib xyaw, cua sov thiab hnav
Sib cais disc dav, disc suav thiab thaiv ntev
Cov no yog qhov sib txawv ntawm qhov ntev, tab sis lawv tsis yog cov lus piav qhia sib hloov. Kenneth Russell tusntxaib-ntsia hlau sib xyaw tsom xampiav qhia txog qhov paub nyiam rau cov discs dav dua kom pom zoo rau kev ua kom tsis sib haum xeeb thiab nqaim cov discs kom nyiam kev faib thiab rov faib dua. Nws kuj tseem cuam tshuam qhov cuam tshuam ntawm kev txwv, txhaws thiab yaj kub.
Qhov kev xav ntawd tsis yog txoj cai yuav khoom thoob ntiaj teb. Yog tias qhov sib piv hloov qhov dav dav, thaiv qhov ntev thiab kev coj tus cwj pwm ua ke, qhov tshwm sim tsis tuaj yeem raug ntaus nqi rau qhov dav ib leeg. Nug seb qhov hloov pauv twg tau hloov pauv thiab qhov kev ntsuas zoo tau txhim kho.
Nyeem stagger kaum nrog conveying kev taw qhia thiab sau
Ib qho nruab nrab kneading thaiv tsis muaj qhov cuam tshuam rau pem hauv ntej twj tso kua mis; cov ntaub ntawv tseem tuaj yeem dhau los ntawm kev ua haujlwm ntawm cov txheej txheem ib puag ncig. Cov ntsiab lus rov qab tawm tsam kev thauj mus los. Lawv cov txiaj ntsig yog nyob ntawm qhov xav tau sau thiab cov xwm txheej siab. Tsis yog "nruab nrab" lossis "rov qab" yog kev qhia tsis siv neeg los txhim kho txhua qhov sib xyaw.
| Thov hloov | Yuav tsum muaj ntaub ntawv sib piv | Yog vim li cas thiaj tsis kam mus sim |
|---|---|---|
| Sib txawv kneading geometry | Dimensions, element sequence, cov ntaub ntawv zoo thiab ruaj khov throughput. | Lub hom phiaj tsis zoo tseem nyob los yog cov khoom yuav tsum tau deteriorates. |
| Kev txwv ntau dua | Qhov tseeb yaj qhov kub thiab txias, siab, tsav load thiab pub / cua tus cwj pwm. | Lub tshuab lossis cov khoom txwv tau dhau lawm. |
| Restored ua hauj lwm clearances | Matched ntsia hlau / chim ntsuas ntawm lub npe txoj haujlwm. | Lub rooj sib txoos ua tsis tiav nws qhov kev pom zoo haum lossis kev cai tshem tawm. |
Durability pib nrog lub luag haujlwm tiag tiag
Peb luam tawm 38CrMoAlA thiab nitriding qhov tob ntawm 0.50 txog 0.70 hli ntawmco-rotating khoom specification. Cov no yog cov ntaub ntawv thiab cov ntaub ntawv kho mob, tsis yog kev sib xyaw ua haujlwm zoo lossis kev pabcuam-lub neej lav. Lawv tsis txhais cov kev khiav tawm.
Rau ib qho abrasive formulation, peb yuav thov kom tus neeg muab tub lim, thauj khoom thiab hnav daim ntawv qhia ua ntej xaiv qhov txheej txheem saum npoo. Kev tshuaj xyuas Geometry thiab kev tiv thaiv hnav yog kev txiav txim siab cais. Ib qho tawv tawv tsis tuaj yeem ua kom pom tias qhov sib xyaw tsis haum yog qhov tseeb. Pebparallel twin-screw clearance thiab coj qhiapiav qhia txog cov ntaub ntawv soj ntsuam sib phim.
Tshawb xyuas cov khoom tsuas yog raws li cov nroj tsuag pom zoo cais tawm, ua kom txias thiab tuav cov txheej txheem. Tsis txhob txo qhov kev tshem tawm lossis hloov ib qho kev sib dhos sab nraum lub tshuab tsim cov kev txwv kev pom zoo los nrhiav kev sib xyaw ntxiv.
Yuav ua li cas npaj ib tug ntxaib-ntsia hlau profile rau kev sib tov
Tshawb xyuas cov txheej txheem ntawm kev ua haujlwm ua ntej xaiv qhov sib xyaw ua ke. Martin tuskev tshuaj xyuas tas mus lipiav qhia txog metered pub, conveying, melting, puv mixing regions thiab tso tawm. Ib qhov profile yuav tsum muab cov haujlwm no ua ke. Ib qho kev pom zoo ib leeg-ib leeg tso nws cov dej nkag thiab cov dej ntws qis tsis tau teev tseg.
Txhais qhov twg mus txog txhua qhov sib xyaw
Rau qhov kev hloov pauv, hais seb cov khoom puas nkag mus ua pellets, hmoov, kua lossis ib qho concentrate, thiab txheeb xyuas nws txoj haujlwm pub. Peb yuav nug dab tsi melting los yog ntub dej yuav tsum tau ua ua ntej lub hom phiaj dispersion hauj lwm. Ib qho kev sib piv sib xyaw yuav tsum tsis txhob zais qhov kev hloov pauv ntawm cov khoom xyaw nkag mus rau hauv cov txheej txheem.
Khaws kev pub noj, txwv thiab qhov cua txuas nrog
Ua ntej ntxiv ib qho kev txwv, nug tus txheej txheem tsim los xyuas lub siab thiab sau cov cai nyob ib puag ncig cov khoom noj thiab cov qhov cua. Peb yuav tsis pom zoo qhov kev hloov pauv los ntawm kev sib xyaw-tsuas yog kos duab uas tshem tawm cov interfaces. Sau tus cwj pwm uas siv tau ntawm txhua qhov qhib ua ib feem ntawm qhov kev sim luv luv.
Txheeb xyuas qhov ntsuas kub ntawm cov khoom thiab qhov twg cov qauv coj mus kuaj zoo. Txwv tsis pub, kev nyeem ntawv kub ntawm qhov chaw sib txawv tuaj yeem ua yuam kev rau qhov kub nce siab los ntawm lub caij tshiab. Khaws qhov ntsuas qhov chaw ruaj khov thaum lub hom phiaj yog qhov sib piv ncaj qha.
Muab qhov sib npaug sib npaug rau qhov kev tsim
Qhia cov khoom xyaw thaum nws nkag mus rau hauv extruder. Ib qho xim ua ntej dispersed concentrate thiab ib qho agglomerating nyoos pigment tsis nthuav tawm tib txoj haujlwm. Peb yuav thov tus neeg muag khoom cov ntaub ntawv xov xwm thiab tshuaj xyuas daim ntawv xa tuaj ua ntej txiav txim siab seb qhov kev xav tau tseem ceeb yog kev faib tawm, deagglomeration lossis ob qho tib si.
| Cov ntaub ntawv luv luv | Lus nug teb | Cov ntaub ntawv pov thawj suav nrog kev lees txais |
|---|---|---|
| Pre-dispersed xim masterbatch | Puas yog koob tshuaj thiab kev faib tawm zoo ib yam, thiab puas muaj cov agglomerates seem? | Sijhawm/txoj hauj lwm sampling, xim sib xws thiab kev soj ntsuam dispersion siv tau. |
| Agglomerating pigment los yog ntxhia muab tub lim | Cov khoom xyaw puas tau ntub dej thiab muaj cov khoom siv tsis txaus ntseeg? | Txhais kev ntsuas agglomerate thiab cov khoom yuav tsum tau muaj. |
| iav-fiber compound | Puas yog qhov sib xyaw ua tau raws li qhov sib xws thiab khaws cia-fiber xav tau? | Fiber morphology thiab cov txheej txheem txhua yam. |
| Polymer blend los yog kub-sensitive compound | Dab tsi theem morphology thiab kub / sijhawm txwv? | Morphology, degradation indicators, As thiab kev ntsuam xyuas cov khoom tiav. |
Russell tuskev sib thamsiv cohesive carbon dub ua piv txwv ntawm cov khoom xav tau dispersion thiab contrasts intensive seem nrog softer kho ntawm fibers. Qhov ntawd txhawb nqa cov khoom siv tshwj xeeb luv luv, tsis yog txoj cai uas txhua cov khoom ntim xav tau qhov kev txwv nruj tshaj plaws.
Tsis txhob hais ib qhov profile rau txhua lub luag haujlwm granulation
Pebgranulation parallel ntxaib ntsia hlaunplooj ntawv teev cov thermoplastic pellet ntau lawm, suav nrog PE thiab PP, thiab txhawb nqa cov ntaub ntawv nkauj xwb thiab cov khoom siv rov ua dua tshiab nrog kev tsim kho. Rau cov lus hais, cov pawg dav yuav tsum tau nqaim mus rau qib tiag tiag, ntxiv kev thauj khoom, pub daim ntawv thiab cov khoom xav tau.
Peb yuav nug seb cov khoom siv rov ua dua tshiab puas tau hloov cov khoom sib xyaw lossis qib sib kis ua ntej ua qhov tsis xws luag rau cov ntsia hlau. Ib yam li ntawd, peb yuav tsis lees txais cov xim-tsuas yog kuaj rau qib fiber ntau uas nws qhov kev yuav khoom tshwj xeeb suav nrog kev ua haujlwm zoo. Qhov kev lees paub yuav tsum ua raws li yog vim li cas cov additive nyob.
Yuav ua li cas txheeb xyuas qhov sib tov zoo es tsis txhob kwv yees
Vim li cas kuv piv kev ntxhov siab ntau dua li qhov ceev ceev ib leeg
Kuv yuav siv txoj kev tshawb fawb los ntawm Jan Philipp Oldemeier thiab Volker Schöppner ua qhov pib muaj txiaj ntsig thaum sib piv kev sib xyaw ua ke. Lawv cov kev tshawb fawb tau tshuaj xyuas cov ntsiab lus ntsia hlau uas siv peb-dimensional flow simulation thiab particle tracking, es tsis yog xav tias txhua qhov particle muaj kev sib xyaw ua ke.
Rau ZSK25 geometry nrog PP FPH50, cov kws tshawb fawb tau teev qhov kub thiab txias ntawm 220 ° C thiab kev xa tawm ntawm 20 kg / h. Ua kom cov hniav sib xyaw ua kom nrawm ntawm 200 mus rau 400 rpm tau tsa qhov txhais tau tias ntawm cov khoom taug qab qhov siab tshaj plaws shear stresses los ntawm kwv yees li 37,900 mus rau 54,400 Pa.
Cov no yog simulated kev ntxhov siab, tsis ntsuas kev txhim kho hauv cov khoom tiav tiav. Cov kws sau ntawv kuj tau hais tias qhov kev sim ua pov thawj tseem tab tom tos.Nyeem qhov kev kawm qub.
Kuv qhov kev txiav txim siab engineering yog qhov ceev ib leeg yog qhov tsis tiav specification. Ua ntej pom zoo ib qho khoom siv rau kev tsim khoom, kuv xav kom muaj pov thawj tias nws qhov kev ntxhov siab cuam tshuam txog qhov tsis xws luag, ua raws li kev txheeb xyuas ntawm dispersion, melt kub, tsav load thiab cov khoom yuav tsum tau muaj zog.
Xaiv ib qho kev xeem uas haum rau tus qauv
ISO 23900-5: 2015, tau lees paub xyoo 2025, piav qhia txog qhov ntsuas ntsuas ntsuas ntsuas rau kev ntsuas cov xim dispersion hauv thermoplastic polymers. Nws yog ib txoj hauv kev los txiav txim siab rau cov xim concentrates siv hauv extrusion thiab yaj spinning; lub chaw soj nstuam yuav tsum tsim kom muaj kev npaj thiab kev xeem.
TS EN ISO 18553: 2025chaw nyob particle/agglomerate loj thiab dispersion ntsuam xyuas nyob rau hauv polyolefin kav, fittings thiab tebchaw. Nws tau hais tias muaj xws li cov pa roj carbon dub hauv qab 3% los ntawm huab hwm coj thiab cov xim xim hauv qab 5%. Tsis txhob siv qhov kev txiav txim siab mus rau qhov muaj zog heev masterbatch lossis rau txhua qhov muab tub lim.
Cais cov ntaub ntawv zoo los ntawm cov ntaub ntawv ua haujlwm
Rau kev faib tawm, txheeb xyuas qhov twg thiab thaum twg cov qauv coj mus kuaj thiab qhov ntsuas qhov sib xws yog qhov tsim nyog. Rau dispersion, txhais cov qauv kev npaj thiab qhov cuam tshuam agglomerate lossis morphology kev ntsuas. Pom zoo cov qauv kev lees paub nrog cov khoom specification thiab kuaj ua ntej qhov kev sim, es tsis yog xaiv qhov chaw pib tom qab pom qhov tshwm sim.
Rau kev sib piv ntawm lub zog, hais seb tus nqi tshaj tawm yog tsav cov tswv yim, kwv yees lub zog ntawm lub zog los yog kev ntsuas kab dav dua, thiab txheeb xyuas qhov loj ntawm cov dej ntws. Tsis txhob sib piv tsis zoo li "SME" tus lej lossis kho ib qho nruab nrab lub zog ua pov thawj ntawm kev ntxhov siab hauv zos. Peb yuav sau lub zog thiab thauj khoom nrog rau qhov zoo, tsis yog hloov cov kev xeem zoo nrog lawv.
Peb qhov kev pom zoo: khaws cov kab sib cais kom zoo, ruaj khov tso zis, yaj kub thiab cov khoom siv thauj khoom. Pom zoo rau kev teeb tsa tsuas yog thaum nws ua tau raws li qhov xav tau pom zoo hauv txhua kab lus.
Txheeb xyuas cov ntsia hlau configuration rau kev sib tov zoo thiab kav ntev
Siv qhov kev tshuaj xyuas tswj tsis yog ib ntu ntawm kev hloov kho tsis sib xws. Cov kev ua haujlwm hauv qab no yog peb txoj hauv kev los hloov qhov kev tsis txaus siab sib xyaw ua ib qho kev teeb tsa luv luv. Nws tsis tso cai rau kev ua haujlwm sab nraum lub tshuab tsim cov kev txwv lossis hloov pauv rau cov nroj tsuag hloov-tswj thiab cov txheej txheem kev nyab xeeb.
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Txhais qhov tsis xws luag thiab lees txais lub hom phiaj
Piav qhia qhov tsis xws luag nrog cov qauv neeg sawv cev thiab cov khoom tsim nyog specification. Txiav txim siab qhov kev faib tawm, kev faib tawm thiab kev ntsuas cov khoom tiav yuav txiav txim siab qhov kev lees txais ua ntej hloov kab.
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Sau ib qho piv txwv hauv paus
Sau cov qauv kev kho dua tshiab, daim ntawv muaj cov khoom noj, tus nqi pub, cov ntsia hlau ceev, ntsuas qhov kub thiab txias, qhov siab, tsav load thiab ruaj khov tso zis. Sau cov qauv nrog tib lub sijhawm ua haujlwm thiab qhov chaw ntsuas.
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Tshawb xyuas kev pub mis, melting thiab hnav
Tshawb xyuas cov khoom noj sib xws thiab txheeb xyuas cov khoom hauv qhov tsis xws luag. Yog tias xav tias hnav, tau txais kev ntsuas qhov sib npaug ntawm cov ntsia hlau-thiab-thooj raws li cov txheej txheem kuaj pom zoo ua ntej pom zoo kom hloov kho qhov sib xyaw geometry.
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Xaiv ib qho kev hloov pauv ncaj ncees
Qhia cov txheej txheem kev hloov pauv yog npaj los daws. Document lub ntsiab qhov ntev, kev taw qhia, ntu thiab cuam tshuam cuam tshuam. Kom tus neeg ua haujlwm tus txheej txheem lub luag haujlwm pom zoo qhov kev hloov pauv thiab nws cov kev txwv kev ua haujlwm.
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Sib piv tom qab cov txheej txheem stabilizes
Siv cov kev pom zoo kom ruaj khov thiab cov qauv coj mus kuaj. Khaws cov qauv tsim thiab kev sim ua kom zoo ib yam, sau txhua qhov sib txawv uas tsis tuaj yeem zam, thiab sib piv qhov zoo ua ke nrog qhov kub thiab txias, thauj khoom thiab lees txais cov zis.
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Txais, kho lossis rov qab mus rau qhov pib
Txais qhov kev hloov pauv tsuas yog tias nws ua tau raws li qhov ua tau zoo thiab cov txheej txheem ua haujlwm ua ntej. Yog tias nws ua tsis tau, khaws cov kev tshawb pom thiab ua raws li kev pom zoo rov qab los yog kev kho dua tshiab es tsis txhob ntxiv lwm qhov kev txwv yam tsis muaj kev xav tshiab.
Qhov peb xav tau rau lub ntsiab lus luv luv
Xa lub tshuab yog tus kheej, teeb duab kos duab, nominal ntsia hlau txoj kab uas hla, nruab nrab nrug, ncej lossis tsav cov ntsiab lus sib txuas, thiab txhua daim ntawv qhia hnav. suav nrog cov ntaub ntawv thiab cov ntaub ntawv ua haujlwm saum toj no. Rau ib tug segmented system, txheeb xyuas lub caij ib ntus; rau ib qho ntsia hlau ib zaug, txheeb xyuas cov haujlwm ua haujlwm ntawm daim duab tiav. Mechanical haum thiab kev sib xyaw ua haujlwm xav tau cais kev lees paub.
Cov lus nug uas nquag nug
Kev faib khoom puas tuaj yeem rhuav tshem cov xim agglomerates?
Distributive mixing feem ntau redistributes khoom; nws tsis yog los ntawm nws tus kheej tsim kom muaj kev ntxhov siab txaus los rhuav tshem cov agglomerate. Lub ntsiab lus tiag tuaj yeem ua rau ob qho tib si sib xyaw. Tshawb xyuas cov residual agglomerates cais los ntawm cov xim los yog muaj pes tsawg leeg uniformity ua ntej txiav txim siab seb puas yuav tsum muaj kev cuam tshuam ntau dua.
Puas ua kom ceev ceev ib txwm txhim kho kev sib xyaw?
Tsis yog. Ceev yog ib qho kev khiav hauj lwm tawm tswv yim, thaum kev sib xyaw ua ke yog cov khoom ntsuas ntsuas. Sib piv qhov kev hloov ceev nrog rau kev pub mis, qhov kub thiab txias, tsav load thiab qhov kev pom zoo zoo. Tsis txhob lees txais qhov kev teeb tsa siab dua rpm yog tias cov khoom xav tau lossis cov kev txwv kev ua haujlwm tsis tau ua tiav lawm.
Puas yog 90-degree kneading blocks ib txwm zoo dua rau kev tawg?
Tsis yog. Lub kaum sab xis tsuas yog ib qho geometry sib txawv. Disc dav, tag nrho qhov ntev thaiv, conveying kev taw qhia, sau tej yam kev mob thiab ib puag ncig configuration kuj xav tau kev tshuaj xyuas. Ib qho kev thaiv nruab nrab tuaj yeem dhau cov khoom siv raws li qhov kev txiav txim ntawm cov txheej txheem ib puag ncig; nruab nrab tsis txhais hais tias cov khoom tseem nyob ruaj khov.
Cov hniav sib xyaw puas tuaj yeem muab kev sib xyaw ua ke?
Yog, nyob ntawm cov geometry thiab kev ua haujlwm. Ib lub ntsiab lus piav qhia tias yog cov khoom sib xyaw ua ke tuaj yeem ua rau muaj kev ntxhov siab hauv zos. Thov cov ntaub ntawv pov thawj rau qhov tseeb profile thiab cov khoom siv lub luag haujlwm es tsis yog kho cov npe qeb raws li kev piav qhia tag nrho ntawm nws qhov kev ua tau zoo.
Vim li cas cov xim streaks nyob twj ywm tom qab ntxiv ntau kneading blocks?
Ntau kneading blocks tsis txheeb xyuas lossis tshem tawm qhov ua rau ntawm lawv tus kheej. Txheeb xyuas cov tshuaj ruaj khov, cov khoom muaj nyob hauv daim ntawv, cov txheej txheem melting thiab cov qauv sau raws li kev ua haujlwm sib piv. Tom qab ntawd txiav txim siab seb qhov teeb meem tseem tshuav yog spatial faib, undispersed agglomerates los yog lwm yam tsis xws luag ua ntej yuav hloov kho ntxiv.
Cov ntsia hlau hniav configuration txhais li cas hauv ntxaib-ntsia hlau extrusion?
Rau cov lus qhia no, qhov kev teeb tsa muaj txiaj ntsig yog qhov kev npaj axial ntawm kev xa khoom, kneading thiab sib xyaw seem, suav nrog lawv qhov ntev thiab kev taw qhia. Siv cov ntsiab lus tshwj xeeb ntawm daim duab. Hu rau tag nrho cov kev sib dhos ib lub hniav configuration tsis qhia nws cov kev ua haujlwm lossis ua rau cov neeg muab khoom sib txawv 'cov lej sib pauv hloov tau.
