What is a parallel twin screw barrel?

It is the plasticizing unit of a twin screw extruder: a barrel with two overlapping bores forming a figure-eight cross section, holding two screws of constant diameter. The screws convey material forward mechanically by trapping it between their flights, rather than relying on friction against the barrel wall.

How does a parallel twin screw barrel work?

Material drops onto both screws at the feed throat. As the screws turn, the flight of one wipes the channel of the other, trapping material and pushing it forward. Barrel heaters and shear in the overlap zone melt it, every rotation splits and recombines the melt to mix it, and the final section builds pressure to feed the die.

What is the difference between co-rotating and counter-rotating?

Co-rotating screws turn the same way and deliver high shear at high speed, which suits compounding, masterbatch, and filled compounds. Counter-rotating screws turn in opposite directions and act like a positive-displacement pump, building strong pressure at low shear. That gentler action is what rigid PVC pipe and profile need.

What are fully meshing, partially meshing, and non-meshing twin screws?

They describe how deeply the two screws engage. Fully meshing screws reach the root of each other with a small gap, giving the best shearing and mixing, and this is the most common type in plastics extrusion. Partially meshing screws overlap less and reduce shear. Non-meshing screws sit side by side without engaging, giving the gentlest treatment.

What is the difference between parallel and conical twin screws?

A parallel twin screw keeps the same diameter from feed to discharge, and the bore stays a constant size. A conical twin screw tapers, with a larger feed end narrowing toward the die. The parallel form gives a constant cross section along the length, which makes long machines with venting and mixing sections straightforward to build.

Why use a twin screw instead of a single screw?

Positive conveying. A single screw relies on friction, so material must grip the barrel wall to move forward, and powders, flakes, and slippery feed cause surging. Twin screws push material along mechanically regardless of grip, which gives steadier output and lets them handle feed that defeats a single screw.

What are parallel twin screws used for?

Four main families: plastic modification and compounding with glass fibre, carbon fibre, or flame retardants; colour and functional masterbatch production; extrusion of pipe, profile, sheet, and film including PVC and PC; and recycled plastic processing where waste PP and PE are cleaned, re-plasticized, and pelletized.

Do twin screws have to be replaced as a pair?

Yes. The intermesh clearance between the two screws is set during manufacture and cannot be recovered by replacing one screw against a worn partner. Twin screws are produced, supplied, and replaced as a matched pair, and they should be stored and handled that way too.

Dab tsi yog Parallel Twin Screw Barrel? Yuav Ua Li Cas

A parallel twin ntsia hlau chimtuav ob lub taub hau ntawm txoj kab uas hla ib sab ntawm ib sab hauv daim duab-yim bore. Cov ntsia hlau tig ua ke thiab thawb cov khoom mus rau pem hauv ntej los ntawm kev ntxiab nws ntawm lub davhlau, tsis yog rub nws mus rau ntawm phab ntsa raws li ib qho ntsia hlau ua. Ob txoj kev tsim qauv txiav txim siab seb lub tshuab tuaj yeem ua li cas: kev sib hloov kev taw qhia (co-rotating lossis counter-rotating) thiab qhov tob npaum li cas ntawm cov ntsia hlau mesh (tag nrho, ib nrab, lossis tsis tag nrho). Tau txais ob txoj cai thiab tib cov khoom siv sib txuas, qhov cua, lossis extrudes tawv PVC.

Nug peb tus neeg muag khoom seb qhov sib npaug ntxaib ntsia hlau yog dab tsi thiab koj tau txais peb cov lus teb tsis meej txog "ob lub hau ntswj tsis yog ib qho." Uas undersells nws. Qhov kev npaj ntxaib hloov pauv li cas cov khoom txav mus los ntawm lub tshuab, thiab qhov sib txawv ntawm ib qho kev sib txawv yog vim li cas cov ntsia hlau ntxaib tuav cov haujlwm ib leeg ntsia hlau tsis tuaj yeem.

Cov lus qhia no suav nrog cov tshuab, ob qhov kev faib tawm uas txiav txim siab kev ua tau zoo, cov khoom siv tiag tiag, thiab qhov loj me. Rau daim duab dav dav, saib pebextruder ntsia hlau chim phau ntawv qhia.

Dab tsi yog Parallel Twin Screw Barrel?

Ib tug parallel ntxaib ntsia hlau chim yog lub plasticizing chav tsev ntawm ib tug ntxaib ntsia hlau extruder. Nws muaj ob qhov chaw ua hauj lwm raws li ib tug system: ib lub thoob nrog ob tug overlapping bores machined rau hauv nws, tsim ib daim duab-yim hla ntu, thiab ob tug ntsia hlau nyob rau hauv cov bores.

Paralleltxhais tau hais tias cov screws khaws tib txoj kab uas hla ntawm pub kawg mus rau qhov kawg. Lub bore nyob twj ywm tib qhov loj raws nws tag nrho ntev. Qhov ntawd yog qhov sib txawv ntawm lub conical ntxaib, qhov twg ob qho tib si screws thiab bore taper mus rau qhov tuag.

Daim ntawv sib npaug muab rau tus tsim qauv ib ntu ntu txuas mus ua haujlwm nrog rau tag nrho qhov ntev, uas ua rau nws yooj yim los tsim cov cav tov ntev nrog chav rau kev sib xyaw, qhov cua, thiab sib xyaw. Kev sib piv ntawm ob daim ntawv yog them rau hauv pebconical vs parallel phau ntawv qhia.

Parallel twin screw barrel set manufactured by Nanhaiya — Ib tug parallel twin ntsia hlau thiab chim teeb. Cov ntsia hlau tuav txoj kab uas hla tsis tu ncua raws lub sijhawm ua haujlwm tag nrho.

Yuav ua li cas Parallel Twin Screw Barrel Ua Haujlwm, Ib kauj ruam los ntawm kauj ruam

Pub.Cov khoom poob rau hauv lub caj pas pub thiab tsaws ntawm ob lub hau ib zaug. Cov ntsia hlau ntxaib siv cov hmoov, flakes, thiab cov khoom noj tsis tu ncua uas ib tus ntsia hlau tsis sib haum los tuav.
Kev xa tawm.Cov ntsia hlau tig thiab lub davhlau ntawm ib qho ntsia hlau so cov channel ntawm lwm qhov. Cov khoom tau raug dai rau hauv C-shaped chambers ntawm kev ya davhlau thiab thawb rau pem hauv ntej mechanically.
Melting.Barrel heaters muab ib feem ntawm cov cua sov. Tus so yog los ntawm shear raws li cov khoom siv tau ua haujlwm nyob rau hauv qhov sib txawv nqaim qhov twg cov ntsia hlau sib tshooj, uas yog qhov hnyav tshaj plaws hauv lub tshuab.
Sib tov.Txhua qhov kev sib hloov sib cais, folds, thiab recombines cov dej ntws. Qhov rov faib dua yog dab tsi disperses fillers, pigments, thiab additives tusyees.
Qhov cua.Ntawm ib lub vented chim, cov channel tob zuj zus ntawm qhov chaw nres nkoj kom siab poob mus rau zero. Moisture thiab volatiles khiav tawm muaj, feem ntau nyob rau hauv lub tshuab nqus tsev.
Pumping thiab metering.Ntu kawg ua kom siab thiab xa cov yaj mus tas li mus rau qhov tuag lossis cov pelletizer.

Parallel ntxaib ntsia hlau manufacturing ntawm Nanhaiya.

Co-Rotating vs Counter-Rotating: Ob Txoj Kev Qhia, Ob Txoj Haujlwm

Cov ntsia hlau tuaj yeem tig mus rau tib qho kev taw qhia lossis hauv cov lus qhia rov qab. Qhov kev xaiv ntawd hloov tus cwj pwm ntawm lub tshuab tag nrho.

	Kev sib hloov	Counter-rotating
Ntsia hlau kev taw qhia	Ob lub screws tig tib txoj kev	Screws tig nyob rau hauv opposite lus qhia
Khoom siv txoj kev	Ua raws li daim duab-yim nyob ib ncig ntawm ob lub screws	Squeezed los ntawm lub nip ntawm cov screws
Shear	Siab, thiab adjustable los ntawm cov ntsiab lus ntsia hlau	Tsawg, thiab maj mam rau ntawm cov khoom
Ntsia hlau ceev	Siab	qis
Lub tsev siab	Nruab nrab	Muaj zog thiab ruaj khov
Zoo tshaj ntawm	Compounding, masterbatch, reactive extrusion, puv tebchaw	Rigid PVC yeeb nkab thiab profile, cov khoom siv kub-rhiab heev

Kev sib hloovscrews yog cov cuab yeej sib xyaw. High shear thiab kev kub ceev disperse iav fiber ntau, pigment, thiab additive kom huv si, uas yog raws nraim li qhov hloov kho compound xav tau.

Counter-rotatingscrews ua zoo li lub twj tso kua mis zoo. Lub nip nruab nrab ntawm lawv nqa cov khoom siv rau pem hauv ntej nyob rau hauv lub zog siab ntawm qis shear, thiab qhov ntawd yog qhov nyuaj PVC xav tau, txij li PVC degrades thaum koj txiav nws nyuaj. Pebcounter-rotating parallel twin ntsia hlau chimyog tsim los rau lub luag haujlwm ntawd, thiab chemistry qab nws zaum hauv pebPVC ntsia hlau chim phau ntawv qhia.

Counter-rotating parallel twin screw barrel for PVC extrusion by Nanhaiya — Ib tug counter-rotating teeb. Lub nip nruab nrab ntawm cov ntsia hlau twj tso kua mis cov khoom rau pem hauv ntej ntawm qis shear.

Tag Nrho, Ib Feem, lossis Tsis-Meshing: Lub Axis Feem ntau Coj Hla

Kev sib hloov kev taw qhia tsuas yog ib nrab ntawm kev faib tawm. Qhov thib ob axis yog qhov tob npaum li cas ntawm ob lub taub hau sib koom ua ke, thiab cov lus qhia feem ntau yeej tsis hais txog nws.

Peb parallel twin screws tuaj nyob rau hauv peb hom meshing:tag nrho meshing, ib feem meshing, thiab tsis-meshing. Qhov txawv yog deb npaum li cas lub davhlau ntawm ib tug ntsia hlau mus txog rau hauv lub channel ntawm lwm tus.

Siab meshing.Lub davhlau ntawm ib qho ntsia hlau ncav cuag lub hauv paus ntawm lwm qhov, tawm hauv qhov sib txawv me me. Qhov no yog hom ntau tshaj plaws nyob rau hauv plastics extrusion, vim hais tias qhov nruj clearance muab zoo heev shearing thiab sib tov thiab so cov raws huv si raws li cov screws tig.
Ib nrab meshing.Cov ntsia hlau sib tshooj, tab sis tsawg dua. Kev xa tawm tau zoo thaum shear poob, uas haum rau cov khoom siv uas tsis tuaj yeem ua haujlwm hnyav.
Tsis-meshing.Cov ntsia hlau zaum ntawm ib sab yam tsis koom nrog. Lub tshuab coj los ze zog rau ob lub taub hau ib leeg hauv ib lub thoob, nrog kev kho siab tshaj plaws thiab qhov zoo tshaj plaws conveying.

Lub tswv yim takeaway yog tias "twin screw" ib leeg tsis piav txog lub tshuab. Tag nrho meshing thiab counter-rotating yog ib qho cuab yeej sib txawv los ntawm tag nrho meshing thiab co-rotating, thiab ob qho tib si txawv ntawm qhov tsis yog-meshing. Thaum koj qhia meej txog kev hloov pauv, hom meshing yuav tsum phim lub tshuab koj muaj.

Vim li cas Twin Screws Convey txawv los ntawm Ib Leeg Screws

Ib tug ntsia hlau yog ib lub twj tso kua mis. Nws tso siab rau kev sib txhuam: cov khoom siv yuav tsum lo rau ntawm phab ntsa ntawm lub thoob ntau dua li nws lo rau ntawm cov ntsia hlau, los yog nws yooj yim tig rau hauv qhov chaw es tsis txhob txav mus rau pem hauv ntej.

Qhov kev cia siab ntawd ua rau muaj teeb meem tiag tiag. Hmoov, flakes, thiab nplua los yog kev sib txhuam qis tsis tuav zoo, yog li cov ntsia hlau surges los yog tshaib plab. Cov zis ces txawv ntawm qhov zoo npaum li cas cov khoom tshwm sim los tuav hnub ntawd.

Twin screws qhia qhov zoo. Lub davhlau ntawm ib lub ntsia hlau cheb cov channel ntawm lwm tus, yog li cov khoom raug thawb nrog mechanically txawm tias nws tuav cov phab ntsa los yog tsis. Cov zis nyob twj ywm tsis tu ncua, thiab pub uas swb ib qho ntsia hlau mus dhau yam tsis muaj kev tsis txaus siab.

Qhov ntawd kuj yog vim li cas ntxaib ntsia hlau dominate compounding thiab PVC hmoov ua hauj lwm. Kev sib piv tag nrho yog nyob rau hauv pebib leeg ntsia hlau vs ntxaib ntsia hlau qhia.

Dab tsi yog Parallel Twin Screw chim yog ua los ntawm

Lub hauv paus steel nqa cov khoom siv thauj khoom. Qhov saum npoo ntawm nws yuav siv sij hawm hnav. Ntawm no yog cov specifications peb tsim peb parallel ntxaib ntsia hlau teeb rau.

Specification	Tus nqi
Cov khoom siv hauv paus	38CrMoAlA
Thaum tshav kub kub kho hardness	HB260–320
Nitriding hardness	HV950–1000
Nitriding qhov tob	0.50-0.70 hli
Nitriding brittleness	Qib 1 lossis zoo dua
Nto roughness	Rau 0.4
Ntsia hlau ncaj	0.015 hli
Chrome plating hardness	HV950 los yog siab dua
Chrome thickness	0.05-0.10 hli
Bimetallic hardness	HRC60–65
Bimetallic qhov tob	2.0-3.0 hli

Ob tus lej hauv lub rooj ntawd tsim nyog mloog thaum koj sib piv cov nqe lus.Ntsia hlau ncaj ntawm 0.015 mmtxiav txim siab seb cov ntsia hlau puas muaj tseeb nyob rau hauv ib daim duab-yim bore, thiab ib tug bent ntsia hlau hnav ib sab ntawm lub bore thiab rhuav tshem nws hloov ib yam nkaus thiab.Nitriding brittlenessyog qhov kev kuaj xyuas zoo feem ntau cov neeg muag khoom tsis tau tshaj tawm: cov ntaub ntawv nyuaj uas yog nkig chips tawm hauv qab load es tsis txhob tiv thaiv hnav.

Tshaj li tus qauv tsim, peb hloov kho rau hauv cov hlau ua haujlwm kub, txias ua haujlwm steel, high-speed steel, HIP hmoov hlau, thiab PTA alloys. Thaum cov khoom noj yog abrasive lossis corrosive, txoj kev bimetallic hloov nitriding, thiab pebbimetallic vs nitrided phau ntawv qhianpog thaum them nyiaj.

Loj: Txoj kab uas hla, L / D, thiab tso zis

Ntsia hlau txoj kab uas hla teev throughput. L/D teev ntau npaum li cas lub tshuab yuav tsum yaj, sib tov, thiab tso cua raws txoj kev. Ntawm no yog peb feem ntau siv thaum uas tig mus ntxaib ntsia hlau qauv nrog lawv cov ntawv tso tawm cov duab ntawm PVC.

Qauv	Ntsia Hlau Dia (mm)	L/D	PVC tso zis (kg / h)	Screw ceev (rpm)	Lub cev muaj zog (kW)
NWS 75	75	26–36 : kuv	220–350 : kuv	45	45
NWS 90	90	26–36 : kuv	280–460 : kuv	45	55
NWS 110	110	26–36 : kuv	350–650 : kuv	45	75
NWS 120	120	26–36 : kuv	500-800	45	110
NWS 130	130	26–36 : kuv	680-1000 Nws	45	132

Nyeem cov qauv es tsis yog cov kab xwb. Cov zis roughly lem txoj kab uas hla, thiab lub cev muaj zog lub cev muaj zog nce nrog nws, vim hais tias thawb ntau cov khoom los ntawm yuav siv sij hawm ntau torque. L / D band nyob twj ywm tib yam thoob plaws qhov ntau, vim qhov piv yog qhov kev xaiv tsim ntau dua li qhov tshwm sim loj.

Sab nraum cov qauv no peb tsim cov ntsia hlau sib npaug ntawm 45 hli mus rau 150 hli, nrog L / D los ntawm 32: 1 txog 38: 1 ntawm peb cov yeeb nkab PVC los yog haum rau koj cov kab. Qhov L / D tiag tiag yuav koj yog nyob rau hauv peb phau ntawv qhia L / D piv, thiab tag nrho cov khoom zaum ntawm pebparallel ntxaib ntsia hlau khoom nplooj.

Ib daim ntawv ntawm cov duab tso zis:Tus lej kg / h saum toj no yog rau PVC. Hloov cov polymer, formulation, los yog tuag, thiab throughput txav nrog nws. Kho cov ntawv luam tawm raws li kev siv sizing, tom qab ntawd lees paub tawm tsam koj tus kheej daim ntawv qhia.

Dab tsi Parallel Twin Screws Ua tau tiag tiag

Plaub tsev neeg daim ntawv thov npog feem ntau ntawm cov tshuab no ua, thiab lawv khiav los ntawm cov khoom siv raw mus txog rau cov khoom tiav.

Plastic modification thiab compounding

Qhov feem ntau daim ntawv thov. Muaj zog shearing thiab dispersing lub zog cia lub hauv paus polymer xws li PP, PE, los yog ABS yuav muab sib npaug nrog iav fiber, carbon fiber, nplaim retardants, thiab antioxidants. Uas tsim cov khoom siv ntxiv, nplaim hluav taws xob, lossis cov khoom siv hluav taws xob, xws li iav-fibre-reinforced PP siv hauv cov tsheb thiab cov nplaim hluav taws kub ABS siv hauv hluav taws xob.

Xim thiab ua haujlwm masterbatch

High-concentration pigments, dyes, los yog functional additives yog tov rau hauv cov cab kuj resin, ces extruded thiab pelletized. Qhov no tsim cov xim masterbatch rau dyeing, los yog ua haujlwm masterbatch xws li antistatic thiab antibacterial qib. Twin screws daws qhov teeb meem sib xyaw tsis sib xws uas txwv ib leeg screws ntawm txoj haujlwm no.

Granulation parallel twin screw for compounding by Nanhaiya — A granulation parallel ntxaib ntsia hlau. Compounding thiab pelletizing cia siab rau rov sib cais thiab recombining ntawm cov yaj.

Extrusion molding

Tube, profile, ntawv, thiab zaj duab xis. Twin screws haum high-viscosity, nyuaj-rau-plasticize polymers xws li PVC thiab PC tshwj xeeb tshaj yog zoo. PVC cov kav dej, qhov rooj thiab qhov rais profile, thiab cov ntawv PC tag nrho yog nyob ntawm cov txheej txheem plasticization ib tug ntxaib ntsia hlau xa, uas yog dab tsi ua rau cov khoom tsis xws luag. PebPVC yeeb nkab parallel ntsia hlau chimmuab cov kav dej thiab cov kav dej, cov kav dej hluav taws xob, thiab cov kav dej tiv thaiv.

Recycled yas ua

Khib PP thiab PE mus los ntawm shearing thiab cua sov uas tshem tawm impurities, relieves kev nyuaj siab, thiab re-plasticizes cov khoom rau pelletizing. Cov khoom siv rov ua dua tshiab yog qhov tsis sib xws thiab feem ntau kis kab mob, uas yog qhov zoo ntawm cov khoom siv conveying zoo.

Yuav Qhia Li Cas Thaum Lub Caij Nplooj Ntoos Hlav Twin Screw Yuav Tsum Tau Hloov

Twin ntsia hlau coj tshwm sim nyob rau hauv tib qhov chaw txhua lub sijhawm, thiab lub tshuab qhia rau koj ua ntej cov khoom zoo li tsis zoo.

Cov zis poobntawm tib lub ntsia hlau ceev. Hnav clearance cia yaj plam rov qab es tsis txhob txav mus rau pem hauv ntej.
Mixing zoo te.Cov xim streaks los yog tsis sib npaug ntawm cov muab tub lim txhais tau hais tias cov ntsia hlau tsis sib txuas ntxiv lawm.
Lub cev muaj zog load ncentawm qhov tso zis tas li, uas cov ntsiab lus ntawm rub, misalignment, lossis degraded khoom lub tsev tsis kam.
Nto zoo driftsntawm cov khoom tiav, feem ntau yog thawj qhov uas lub tuam tsev zoo tshaj tawm.

Paub meej nrog cov cuab yeej es tsis yog qhov kev xav. Ntsuas lub davhlau OD thiab bore ID tiv thaiv kev tsim cov duab kos, thiab tshawb xyuas qhov kev tshem tawm intermesh, uas yog tshwj xeeb rau cov ntsia hlau ntxaib thiab yooj yim rau kev saib xyuas.

Twin screws yog ib tug khub.Lub intermesh clearance yog teem thaum lub sij hawm tsim khoom. Hloov ib lub ntsia hlau thiab ua kom lwm tus tsis rov qab qhov kev tshem tawm, uas yog vim li cas cov ntsia hlau ntxaib tau tsim, muab, thiab hloov ua ib khub.

Vim Li Cas Ua Haujlwm Nrog Nanhaiya

Nanhaiya tau tsim cov ntsia hlau thiab cov thoob rau ntau tshaj nees nkaum xyoo thiab pab 500+ cov neeg siv khoom thoob ntiaj teb. Pebntau yam ntawm parallel twin screwsnpog kev sib xyaw ua ke, granulation, PS foaming, aluminium-yas vaj huam sib luag, roj hmab thiab yas, thiab PVC yeeb nkab dej num, nyob rau hauv co-rotating thiab counter-rotating configuration.

Txhua txheej yog machined los ntawm 38CrMoAlA thiab tiav rau cov specifications nyob rau hauv lub rooj saum toj no, nrog nruj kam rau ua kev tswj thiab dynamic tshuav nyiaj li cas kuaj ua ntej nws ships. Peb cov txheej txheem tau tsim kom haum rau cov hom extruder loj xws li KraussMaffei, Cincinnati, thiab Jwell, thiab peb kho cov ntsia hlau profile, compression piv, venting tsim, thiab cua sov zones rau koj cov kab.

Ua ntej quoting, peb engineers ua hauj lwm los ntawm cov tsis nrog koj: txoj kab uas hla, nam piv, ntsia hlau zawj qhov tob, thiab cov khoom xaiv. Cov lus hais npog cov khoom, kev xa khoom, thiab tus nqi tu, thiab nws tuaj txog koj li ntawm 12 teev. Tom qab xa khoom, peb cov kws tshaj lij txhawb nqa kev teeb tsa thiab kev xa khoom, thiab cov teeb meem tom qab muag tau txais cov lus teb hauv 24 teev.

Xav tau ib tug parallel ntxaib ntsia hlau teeb ua rau koj lub tshuab? Xa koj tus qauv, kos duab, lossis qauv hnav, ntxiv rau cov khoom koj khiav. Peb hais hauv 12 teev.

Tau txais Twin Screw Quote

Cov lus nug nquag

Dab tsi yog parallel twin ntsia hlau chim?

Nws yog lub plasticizing chav tsev ntawm ib tug ntxaib ntsia hlau extruder: ib chim nrog ob tug overlapping bores ua ib daim duab-yim hla ntu, tuav ob lub qhov taub ntawm qhov tsis tu ncua. Cov ntsia hlau xa cov khoom xa mus rau mechanically los ntawm kev ntxiab nws ntawm lawv lub davhlau, tsis yog cia siab rau kev sib txhuam ntawm lub thoob lub thoob.

Yuav ua li cas lub parallel twin ntsia hlau chim ua haujlwm?

Cov khoom poob rau ntawm ob lub screws ntawm lub caj pas pub. Raws li cov screws tig, lub davhlau ntawm ib tug wipes lub channel ntawm lwm yam, cuab khoom thiab thawb nws mus rau pem hauv ntej. Lub tshuab cua sov thiab shear nyob rau hauv cheeb tsam sib tshooj melts nws, txhua qhov kev sib hloov splits thiab recombines cov yaj mus rau nws, thiab qhov kawg seem tsim siab los pub cov tuag.

Dab tsi yog qhov txawv ntawm co-rotating thiab counter-rotating?

Kev sib hloov screws tig tib txoj kev thiab xa high shear ntawm kev kub ceev, uas suits compounding, masterbatch, thiab cov tebchaw. Counter-rotating screws tig rov qab cov lus qhia thiab ua zoo li lub twj tso kua mis hloov chaw zoo, tsim lub zog siab ntawm qis shear. Qhov kev ua siab zoo yog qhov nruj PVC yeeb nkab thiab profile xav tau.

Dab tsi yog tag nrho meshing, ib nrab meshing, thiab tsis-meshing ntxaib screws?

Lawv piav qhia txog qhov sib sib zog nqus ntawm ob lub screws sib koom. Tag nrho meshing screws ncav cuag lub hauv paus ntawm ib leeg nrog qhov sib txawv me me, muab qhov zoo tshaj plaws shearing thiab sib tov, thiab qhov no yog hom ntau tshaj plaws hauv plastics extrusion. Ib feem meshing screws sib tshooj tsawg dua thiab txo qis shear. Non-meshing screws zaum ntawm ib sab yam tsis muaj kev koom nrog, muab kev kho mob siab tshaj plaws.

Dab tsi yog qhov txawv ntawm qhov sib npaug thiab conical twin screws?

Ib tug sib npaug ntxaib ntsia hlau ua rau tib txoj kab uas hla los ntawm pub kom tawm, thiab lub bore nyob twj ywm qhov loj me. Ib tug conical twin ntsia hlau tapers, nrog ib tug loj pub kawg nqaim mus rau qhov tuag. Daim ntawv sib npaug muab ib ntu txuas txuas mus tas li raws li qhov ntev, uas ua rau cov cav tov ntev nrog qhov cua thiab sib xyaw cov seem ncaj nraim los tsim.

Vim li cas ho siv ob lub hau ntswj es tsis txhob siv ib lub ntsia hlau?

Kev xa tawm zoo. Ib qho ntsia hlau tsuas yog nyob ntawm kev sib txhuam, yog li cov khoom siv yuav tsum tuav lub taub hau kom txav mus rau pem hauv ntej, thiab cov hmoov nplej, flakes, thiab cov khoom ntub dej ua rau muaj kev kub ntxhov. Twin screws thawb cov khoom raws li mechanically tsis hais tuav, uas muab cov khoom tso tawm kom ruaj khov thiab cia lawv tuav cov khoom noj uas kov yeej ib qho ntsia hlau.

Dab tsi yog parallel twin screws siv rau?

Plaub tsev neeg tseem ceeb: kev hloov kho yas thiab sib xyaw nrog cov iav fiber ntau, carbon fiber, lossis nplaim hluav taws kub; xim thiab haumxeeb masterbatch ntau lawm; extrusion ntawm yeeb nkab, profile, ntawv, thiab zaj duab xis nrog rau PVC thiab PC; thiab siv cov yas rov ua dua qhov twg pov tseg PP thiab PE raug ntxuav, rov ua yas, thiab pelletized.

Puas yog ob lub screws yuav tsum tau hloov ua ib khub?

Yog lawm. Lub intermesh clearance ntawm ob lub hau ntswj yog teem thaum lub sij hawm tsim khoom thiab tsis tuaj yeem rov qab los ntawm kev hloov ib lub ntsia hlau tiv thaiv tus khub hnav. Twin screws yog tsim, muab, thiab hloov raws li ib tug khub, thiab lawv yuav tsum tau muab khaws cia thiab ua li ntawd ib yam nkaus thiab.