What is a conical twin screw barrel?

It is a tapered twin-bore extrusion component in which two conical screws rotate inside a matching conical barrel. The taper compresses and plasticizes material over a short length, making the conical screw barrel ideal for PVC pipe, profile, sheet and WPC extrusion.

What materials is it best used for?

Rigid PVC (pipe, profile, board and sheet), wood-plastic composite, PE-based profiles and resin tile, plus PVC pelletizing. It handles low-bulk-density dry-blend powders especially well thanks to its large feed-end intake.

How is it different from a parallel twin screw barrel?

A conical barrel tapers and builds high compression with gentle shear, suiting direct PVC/WPC extrusion. A parallel twin screw barrel keeps a constant diameter and higher shear, which suits compounding, masterbatch and very high-filler formulations.

What is the typical clearance between screw and barrel?

Clearance is the small gap between the flight tip and the bore wall. It is set tight and accurate on a new part; as it opens up from wear, output and pressure drop. Measuring it periodically is the clearest way to track barrel wear.

How do I install a conical twin screw barrel?

Power down and lock out, clean the mating faces, mount and align so the screws turn freely, wire each heater zone and thermocouple correctly, then bring the barrel up to temperature slowly and soak it before starting the screws.

What causes wear in conical twin screw barrels?

Mainly abrasive fillers such as calcium carbonate, wood fiber and glass, made worse by corrosion from PVC processing, poor maintenance and under-specified hardness. A deeper bimetallic or tungsten-carbide layer resists all three far better.

How often should the barrel be inspected or replaced?

Do visual and purge checks monthly and measure clearance quarterly. Replacement timing depends on filler load and run hours — track the wear trend rather than waiting for a failure, and rebuild or replace once clearance moves past spec.

How do I choose the right size for my extrusion line?

Match the diameter ratio and length to your extruder model and target output, then pick a surface treatment based on how abrasive your formulation is. Send a drawing or a sample with key dimensions so the barrel is an exact fit, not an approximation.

Conical Twin Screw Barrel: Yakazara Gwaro kune Specs, Zvishandiso & Sarudzo

2026-08-05 0 Ndisiire meseji

By theNanhaiya Technical Team— Screw & Barrel Engineering, Zhoushan · Ongororo yezve fekitori kurongeka · ~10 min verenga

Kurumidza mhinduro

A conical twin screw barrel chinhu chakaita taped, twin-bore extrusion component umo ma conical screws maviri anotenderera mukati medhiramu rinoenderana. Iyo tapered geometry inopa kudya kwakasimba uye kudzvanywa kwepamusoro muhurefu hupfupi, ndosaka iyoconical twin screw uye mbiyandiyo yakajairika sarudzo yePVC pombi, chimiro, pepa uye WPC extrusion.

Kana iwe uchimhanyisa PVC kana huni-plastiki mutsara, iyoconical twin screw barrelndechimwe chezvikamu zvinonyanya kusarudza kuburitsa kwako, kunyungudutsa mhando uye mutengo wekumhanya. Sarudza saizi isiriyo, zvinhu kana clearance uye iwe unobhadhara iyo mukupfeka, zvimedu uye nguva yekudzikira. Iri gwara rinobata kuti conical screw barrel inoshanda sei, izvo zvinongedzo zvine basa kana uchitenga, kuti inosiyana sei kubva kuneparallel twin screw barrel, uye nzira yekusarudza, kuisa uye kuchengetedza imwe - yakanyorwa kubva mumaonero efekitari inogadzira zvikamu izvi zuva rega rega.

Conical twin screw barrel manufactured by Nanhaiya — Iyo conical twin screw uye barrel set - iyo tapered bores inopa pfupi-kureba compression yakanakira kupisa-inonzwa PVC.

Iyo conical twin screw barrel inoshanda sei

Mune aconical twin screw extruder, screws mbiri dzinogara padivi nepadivi pakona diki, yakafara pamagumo ekudya uye yakamanikana pamagumo ekufa. Iyo dhiramu inoboora taper kuti ienderane. Sezvo zvinhu zvakasvibirira zvinofamba kubva munzvimbo yakakura-dhayamita yekudyisa kuenda kunzvimbo diki-dhayamita metering, iyo iri kudzikira vhoriyamu inoimanikidza uye inoiisa mupurasitiki apo ndege dzinopindirana dzinotakura nekusanganisa. Nekuti maviri screws anotenderedza uye akazara intermesh, iyo conical twin screw nedhiramu inoita senge pombi inotamisa-inobuda - inobuda yakadzikama, yakapfava kugera, inodzivirira mapolymer anonzwa kupisa sePVC.

Iyo nzira inopatsanurwa kuita matanho matatu:

Kudyisa & kutumira- iyo hombe-yekupedzisira dhayamita inopa hombe yekudya, saka musanganiswa weupfu uye yakaderera-yakawanda-density zvinhu (sePVC yakaoma-musanganiswa) inodhonzwa mukati nekuvimbika isina bhiriji.
Compression & plasticizing- iyo taper inoderedza chiteshi vhoriyamu pahurefu, kubatanidza zvinhu, kutyaira kunze kwemhepo nekuinyungudutsa kuburikidza nekupisa kwakasanganiswa uye basa remuchina.
Metering & discharge- iyo yakamanikana metering zone inovaka yakagadzikana kudzvanywa uye inosundira yunifomu, homogeneous inonyungudika kuburikidza nekufa pachiyero chinodzorwa.

Dhiramu rinoita zvinopfuura kungoisa masiruuru. Inotakura hita uye nzvimbo dzekutonhodza dzinobata nhanho imwe neimwe pakudziya kwayo. Madhiramu eNanhaiya anoshandisa dhizaini yekudziya uye yekutonhodza yakawanda - kazhinji inodyisa, kudzvanya uye homogenization nzvimbo - ine sarudzo yevacuum venting kudhonza hunyoro uye kunyungudika kubva mukunyunguduka, izvo zvine basa kune yakazadzwa uye hygroscopic makomisheni.

Madimikira akakosha ekutarisa usati watenga

Madhiramu maviri econical anogona kutaridzika akafanana uye anoita zvakasiyana kwazvo. Aya ndiwo maratidziro anosarudza kukwana, kubuda uye kupfeka hupenyu - nhamba dzaunofanirwa kusimbisa pane chero makotesheni.

Spec chinhu	Zvazvinoreva	Nei zvichikosha
Diameter ratio	The feed-end / die-end dhayamita, e.g. 45/90, 50/105, 55/110, 65/132, 80/156, 92/188 mm	Seta kirasi yemuchina uye bhendi rekubuda - inofanirwa kuenderana neiyo extruder modhi chaizvo
L/D reshiyo	Kunyatsogadzirisa kureba vs dhayamita	Kureba kunoshanda kureba = yakawanda nguva yekugara yekuzara fusion uye degassing
Material giredhi	38CrMoAlA nitrided simbi, W6Mo5Cr4V2, HIP hupfu simbi, kana bimetallic	Yakananga inodhiraivha hupenyu hwekupfeka uye kushorwa kuramba kunopesana nekuzadza / PVC makomisheni
Surface kurapwa & kuoma	Nitriding, chrome plating, bimetallic alloy kana tungsten-carbide spray	Nanhaiya anopfapfaidza tungsten-added alloy layer kuti isvike62 HRCmukati medhiramu maringe ne58 HRC
Alloy layer kudzika	Hukobvu hwemukati memukati usingapfeki	Nanhaiya's bimetallic layer i 2.5–3 mm — yakadzika layer inoreva hwindo resevhisi rakareba
Screw/barrel clearance	Mukaha uripo pakati petip yekubhururuka nemadziro	Yakakura kwazvo = kurasikirwa kwekumanikidza uye yakaderera kubuda; mukaha wakamanikana, wakarurama unochengeta kushanda kwakakwirira
Kushivirira / kutwasanuka	Machining kunyatsojeka kwechikamu chakapedzwa	Nanhaiya inobata mapatya mapatya kusvika ± 0.0005 mm kuti aenderane, anodzokororwa kukwana.
Kukwanisa kubuda (kg/h)	Rated throughput nokuda saizi	Nhamba yepasi-yemutengi - ienderane nemutsara wako kumhanya uye chigadzirwa

General industry note:conical size mazita akadai 45/90 kana 65/132 (feed/die dhayamita mumm) akajairika mhiri SJZ-mhando conical machines, saka dhiramu inotsanangurwa nenzira iyi kazhinji inogona kufananidzwa kune iripo extruder. Gara uchisimbisa uchipesana nedhirowa kana sampuli usati wahodha. Iwe unogona kuona saizi yakajairwa pane yeduconical twin screw barrelpeji.

Conical vs parallel twin screw barrel

Mubvunzo unowanzobvunzwa nevatengi ndewekuti vanoda conical kana aparallel twin screw barrel. Ose maviri mapatya-screw, ese ari maviri intermesh - asi iyo geometry inokodzera mabasa akasiyana. Muchidimbu: conical inokunda pane yakananga PVC/WPC extrusion yepombi, mbiri uye bhodhi; parallel yakasimba kusanganisa, masterbatch uye yakanyanya-yekuzadza maumbirwo.

Factor	Conical twin screw barrel	Parallel twin screw barrel
Kudyisa maitiro	Kuvhura kukuru kwekudya - kudyiwa kuri nani kune yakaderera-yakawanda-density poda	Kuwedzera yunifomu yekudyisa yekubatanidza uye pellet feed
Compression	High compression yakavakirwa mukati tapered geometry	Kuwedzera kusingaperi compression pamwe yakatarwa dhayamita
Kupisa / kugera	Gentler, controlled processing - yakanaka kune kupisa-sensitive PVC	Higher shear - zviri nani kusanganisa kwakadzika uye kupararira
Kushandiswa kwakajairika	PVC pombi, mbiri, pepa, WPC, resin tile	Masterbatch, kusanganisa, yakakwira-CaCO₃ uye basa rakazadzwa negirazi
Maintenance	Kupfeka uye kuchenesa kunoda kunyatsotariswa pane taper	Kazhinji zviri nyore geometry kumira uye kutsiva chinhu

Mutemo unobatsira wegunwe: kana yako yekupedzisira chigadzirwandizvoiyo extrudate (pombi kana bhodhi rakananga kubva kufa), conical twin screw barrel kazhinji ndiyo chaiyo chishandiso. Kana iwe uri kugadzira pellets kana kuparadzira inodiwa yekuwedzera package, tarisa parallel twin screw barrel - kunyanya iyo inopoterera-inotenderedza mhando yeyakanyanya kurodha kabhoni. Hauna chokwadi kuti ndeipi inokodzera mutsara wako? Yedusiruuru imwe, conical uye parallel mitsara inoratidzwa pazvigadzirwa peji.

Common applications

Nekuti inosanganisa kudya kwakasimba, kudzvanya kwepamusoro uye kugera zvinyoro, iyo conical twin screw uye mbiya ndiyo bhiza rekuomarara-PVC uye huni-plastiki extrusion. Inoshanda zvakanyanya kune:

PVC pombi- mvura-kupa, drainage uye pombi pombi kubva yakaoma-musanganiswa PVC.
PVC profile- hwindo nemasuo profiles, edge banding uye trim.
PVC bhodhi & pepa- foam board, marble-look sheet uye yemahara-foam board (ona yeduPVC bhodhi conical twin screw barrel)
WPC (huni-plastiki inoumbwa)- decking, madziro emadziro uye profiles kubva kuhuni-fiber-yakazadzwa makomisheni.
PE-yakavakirwa uye resin-tile zvigadzirwa-kusanganisira corrugated resin yekuisa denga tile uye PE-akazadzwa profiles.
PVC pelletizing- kushandura PVC yakaoma-musanganiswa kuita magranules ekushandisa pasi pemvura.

PVC board conical twin screw barrel for foam and marble sheet extrusion — Conical twin screw barrel yakagadzirirwa PVC board uye foam-sheet extrusion.

Maitiro ekusarudza iyo chaiyo conical twin screw barrel

Sarudzo inodzika kumibvunzo mitatu: ndezvipi zvinhu zvauri kumhanyisa, ndezvipi zvinobuda zvaunoda, uye magadzirirwo ako abrasive sei? Shandisa matrix pazasi sepokutangira, wobva wasimbisa saizi chaiyo pamuchina wako.

Zvinhu zvako / zvaunoda	Suggested configuration	Pamusoro / sarudzo yezvinhu
Yakaoma PVC pombi & chimiro	Yakajairika conical geometry saizi kune yako extruder (semuenzaniso 55/110, 65/132)	Nitrided 38CrMoAlA yePVC yakachena, yakaderera-yekuzadza
PVC + yakakwirira CaCO₃ filler	Conical ine yakasimbiswa kupfeka zone, kana nhanho kusvika kune parallel counter-inotenderera	Bimetallic / tungsten-carbide layer (62 HRC) yeabrasion
WPC / huni-fiber makomisheni	Conical ine venting yakasimba uye kupfeka kudzivirira	Bimetallic - huni faibha + mafirita anokuvadza zvakanyanya
PVC foam board / sheet	Conical tuned yekudzora tembiricha yakanyungudika uye yakatsiga kudzvanywa	Nitrided kana bimetallic zvichienderana nehuwandu hwekuzadza
Kubuda kwepamusoro pane imwechete tsoka	Huru dhayamita reshiyo uye/kana kureba hunoshanda hurefu	Matanidza kuomarara kumhanyisa maawa uye mutoro wekuzadza

Chero mhinduro, danho rimwechete rakakosha kuenzanisa dhiramu nemuchina wako uripo. Zvikamu zveConical zvine tsika kune extruder yavanomhanya mairi, saka dhirowa - kana sampuli ine makiyimisheni (yekudya / kufa dhayamita, kureba kwepakati, kureba kwese uye ruzivo rweflange) - ngatitorei imwe chaiyo-inokodzera kutsiva pane "pedyo zvakakwana" chikamu. Kana iwe uchida mutsara wose pane chikamu, tinovakawoyakakwana extruder michina.

Kuisa uye wiring basics

Bhareri chaiyo rinoita chete kana rakaiswa sikweya, rakachena uye richidziirwa nemazvo. Matanho ari pasi apa ndiwo ongororo yakajairika - gara uchitevera bhuku remugadziri wemuchina wako uye maitiro ekuvhara-kunze.

Simba pasi & kuvhara kunze.Isolate drive uye maheater ese usati wabvisa dhiramu rekare. Simbisa zero simba usati watanga.
Chenesa zviso zvinosangana.Bvisa chisimbiso chekare, kabhoni uye maburrs kubva kumaflange uye nekutsvaga zviso kuitira kuti zvigaro zvitsva zvemadhiramu zvisina kukanganisa.
Mount uye gadzirisa.Isa iyo conical dhiramu kune giya bhokisi / imba yekudyisa, kutarisa concentricity uye kuti screws inotendeuka zvakasununguka neruoko simba risati raiswa.
Waya nzvimbo dzekudziya.Batanidzazve mabhendi hita uye kutonhora pane imwe nzvimbo (feed → compression → metering), uye batanidza imwe neimwe thermocouple kune chaiyo controller chiteshi kuti pasave nenzvimbo inoyambuka-waya.
Seta soak profile.Hunza dhiramu kusvika patembiricha zvishoma nezvishoma wosiya kuti simbi inyunguduke ienzane usati watanga ma screws - kutanga kutonhora kunokanganisa torque.

Heater-zone zano:chengetedza nzvimbo yekudyisa inotonhorera uye nhanho tembiricha kusvika pakufa. Nzvimbo dzisina kuenzana kana dzisiri-mamepu ndechimwe chezvikonzero zvinonyanya kukonzeresa uye dema streaks - inofanirwa kuongororwa kaviri mushure mekuchinja kwebhodhoro.

Kugadzirisa uye kupfeka

Mazhinji econical barrel matambudziko anozvizivisa seasina kugadzikana kubuda, kupisa kana kuderedzwa chigadzirwa. Shandisa tafura iyi kuti ufambe nekukurumidza kubva pachiratidzo kuenda kune chingangokonzeresa kugadzirisa.

Symptom	Zvichida chikonzero	Gadzirisa
Mhepo inoshanduka / kuwedzera	Kusawirirana kwekudya, ndege dzakasakara, kana kupisa kwekushisa	Tarisa kudyisa, simbisa nzvimbo tembiricha, kuyera screw/ barrel clearance
Overheating	Heater kusaenzana, kukweshana kwakanyanya, kana kuvharika kutonhora	Ongorora nzvimbo yega yega uye inotonhora dunhu; re-mepu thermocouples
Plasticizing yakashata	Wrong screw setup kana chigubhu chakasakara	Verify configuration; tarisa kune yakawedzera clearance kubva pakupfeka
Mitsetse mitema / mitsetse	Mavara akafa akabata zvinhu zvakaora, kana zvibodzwa	Geza uye chenesa kwazvo; ongorora bore uye screw surface
Kupfeka zvakanyanya / nekukurumidza	Abrasive filler, kusagadzirisa zvakanaka, kana under-spec hardness	Simudzira kune bimetallic / tungsten-carbide barrel; simbisa kuchengetedza

Kupfeka zvakajairika - chinangwa ndechekuita kuti inonoke uye ifungidzike. Abrasive fillers (CaCO₃, huni faibha, girazi) kurwisa bore uye nendege nekukurumidza, ndosaka yakadzika, yakaoma yemukati layer ichibhadhara yega. Iyo 62 HRC tungsten-added surface inongotora nguva yakareba ichipikisana neaya makomboni pane yakajairwa 58 HRC kupera, kutambanudza nguva pakati pekuvaka patsva.

Rondedzero yekutarisa

Cheki pfupi, yenguva dzose inodzivirira kukundikana kunodhura. Gadzira izvi muhurongwa hwako:

Interval	Check	Chiito
Kuchinja kwese	Zone tembiricha & amps	Log kuverenga; ongorora chero kudonha kubva kune yekutanga
Weekly	Melt quality & pamusoro pekupedzisira	Tarisa uone mitsetse mitsva, gels kana shanduko yekubuda
Monthly	Purge & yekuona bore / screw cheki	Chenesa nzvimbo dzakafa; tsvaga zvibodzwa kana kuchinja ruvara
Quarterly	Screw/barrel clearance	Edza musiyano; enzanisa kune spec kuteedzera chiyero chekupfeka
Sezvinodiwa	Heater & thermocouple kutendeseka	Tsiva mabhendi/masensa akakundikana asati akonzeresa chigadzirwa chakashata

Mibvunzo inowanzo bvunzwa

Chii chinonzi conical twin screw barrel?

Iyo tapered twin-bore extrusion chikamu umo maviri conical screws anotenderera mukati meinoenderana conical barrel. Iyo taper inomanikidza uye inoisa plastiki zvinhu pamusoro pehurefu hupfupi, ichiita iyo conical screw barrel yakanakira PVC pombi, chimiro, shiti uye WPC extrusion.

Zvishandiso zvipi zvinonyanya kushandiswa?

Yakaoma PVC (pombi, chimiro, bhodhi uye pepa), huni-yepurasitiki inoumbwa, PE-yakavakirwa profiles uye resin tile, pamwe nePVC pelletizing. Inobata yakaderera-yakawanda-density yakaoma-yakasanganiswa poda kunyanya zvakanaka nekuda kwekudya kwayo kukuru kwekudya.

Yakasiyana sei neparallel twin screw barrel?

Iyo conical barrel inotepa uye inovaka yakakwirira compression ine nyoro shear, inokodzera yakananga PVC/WPC extrusion. Aparallel twin screw barrelinochengetedza dhayamita risingaperi uye shear yakakwirira, inokodzera kusanganisa, masterbatch uye yakanyanya-yekuzadza maumbirwo.

Chii chakajairika clearance pakati pe screw ne barrel?

Clearance ndiyo mukaha mudiki pakati petip yekubhururuka nebore wall. Yakaiswa yakasimba uye yakarurama pane chikamu chitsva; sezvo inovhura kubva pakupfeka, kubuda uye kudzvinyirira kudonha. Kuiyera nguva nenguva ndiyo nzira yakajeka yekutevera kupfeka kwebhari.

Ndinoisa sei conical twin screw barrel?

Simba pasi uye kiya kunze, chenesa zviso zvinosangana, kwira uye gadzirisa kuti screws zvitenderere zvakasununguka, waya yega yega heater zone uye thermocouple nemazvo, wobva waunza dhiramu kumatembiricha zvishoma nezvishoma worinyika usati watanga masiruu.

Chii chinokonzeresa kupfeka muconical twin screw barrels?

Kunyanya abrasive mafirita akadai se calcium carbonate, huni faibha uye girazi, akawedzera kushata nekuora kubva kuPVC kugadzirisa, kusagadzirisa zvakanaka uye kushomeka-kuoma kwakatarwa. Iyo yakadzika bimetallic kana tungsten-carbide layer inopikisa ese ari matatu ari nani.

Kangani dhiramu rinofanira kuongororwa kana kutsiviwa?

Ita kuona uye kuchenesa macheki pamwedzi uye kuyera kubvumidzwa kota. Kutsiva nguva kunoenderana nekuremerwa kwekuzadza uye maawa ekumhanya - tevera maitiro ekupfeka pane kumirira kutadza, uye kuvaka patsva kana kutsiva kamwe clearance inofamba yapfuura spec.

Ndinosarudza sei saizi yakakodzera kune yangu extrusion line?

Matanidza dhayamita reshiyo uye kureba kune yako extruder modhi uye chinangwa chinobuda, wobva watora mushonga wepamusoro unoenderana neabrasive magadzirirwo ako. Tumira dhirowa kana sampuli ine makiyiro akakosha kuitira kuti dhiramu rinyatsokwana, kwete kufungidzira.

Unoda conical twin screw barrel inofananidzwa nemushini wako?

Titumire dhirowa yako - kana sampuli ine akakosha zviyero - uye mainjiniya edu anozotaura-inonyatsokodzera conical twin screw uye dhiramu nekuomarara chaiko kwechinhu chako. Ne in-house nitriding, bimetallic uye tungsten-carbide processing, tinovaka zvikamu zvinosvika 62 HRC mukati mebore kwehupenyu hurefu hwesevhisi.

Wana mutengo mukati maawa gumi nemaviri →

Nanhaiya (Zhoushan) Plastic Machinery · 500+ global clientssingle, conical twin & parallel twinscrew barrels