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.

Pae Tiu Tiu Koeko: He Aratohu Katoa mo nga Tohu, Tono me te Whiriwhiringa

2026-08-05 0 Waiho he karere ki ahau

Na teTe Kapa Hangarau Nanhaiya— Screw & Barrel Engineering, Zhoushan · I arotakehia mo te tika o te wheketere · ~10 min panui

Whakautu tere

Ko te oko hiko mahanga koeko he waahanga tangohanga mahanga-whare, e rua nga hurihanga koeo e huri ana ki roto i tetahi oko koeko e rite ana. Ko te ahuahanga toipee he kaha te whangai me te kopiri teitei i roto i te wa poto, na reira tekooo mahanga tīwiri me te okoKo te kowhiringa paerewa mo te putorino PVC, te korero, te pepa me te tangohanga WPC.

Mena kei te whakahaere koe i tetahi raina PVC, rakau-kirihou ranei, tekoeko mahanga oko tīwiriKo tetahi o nga waahanga e whakatau tika ana i to putanga, te kounga whakarewa me te utu whakahaere. Kōwhirihia te rahinga he, he rawa, he waatea ranei ka utua e koe i roto i te kakahu, te pakaru me te waatea. Ko tenei aratohu e whakaatu ana me pehea te mahi o te peera tira koeko, nga whakaritenga e pa ana ina hoko koe, me pehea te rereke mai i temahanga whakarara screw barrel, me pehea te whiriwhiri, te whakauru me te pupuri i tetahi - i tuhia mai i te tirohanga o te wheketere e miihini ana i enei waahanga ia ra.

Conical twin screw barrel manufactured by Nanhaiya — He huinga mahanga mahanga me te huinga oko - ko nga kohanga tirohanga ka hoatu he pupuhi poto mo te PVC tairongo wera.

Me pehea te mahi o te paera mahanga mahanga

I roto i te akoeko mahanga wiri extruder, e rua nga wiri e noho tahi ana ki tetahi koki paku, he whanui ki te pito whangai me te whaiti ki te pito mate. Ko te paera he taper ki te rite. I te wa e neke ana nga rauemi mata mai i te rohe whangai-diamita nui ki te rohe inenga iti-diamita, ka kopeke te rōrahi e mimiti haere ana, ka whakakikoruatia i te wa e whakawhiti ana, e uru ana nga rerenga rererangi. Na te mea ka huri whakakeke nga wiri e rua me te tino honohono, he rite tonu te mahi a te mahanga mahanga me te paera ki te papu nuku pai - te whakaputa i te iti, te kutikuti ngawari, e tiaki ana i nga polymers tairongo wera penei i te PVC.

Ka wehe te tukanga ki nga waahanga e toru:

Whangai me te kawe- ko te whanui o te mutunga o te whangai ka nui te nui o te whakaurunga, no reira ka kumea mai te whakakotahitanga o te paura me nga mea iti-nui (penei i te whakaranu maroke PVC) kaore he piriti.
Kōpeketanga me te whakakikorua- ka whakaitihia e te taper te rōrahi o te hongere i te roa, te whakatiki i nga rawa, te peia atu o te hau me te whakarewa i te wera me te mahi miihini.
Te ine me te tukunga- ka hangaia e te rohe inenga whaiti te pehanga pumau me te pana i te rewa rite, riterite i roto i te mate i te tere tere.

He nui ake te mahi a te oko i te whare i nga wiri. Ka mauria e ia nga waahi whakamahana me nga waahi whakamatao e pupuri ana i ia waahanga i te pāmahana tika. Ka whakamahia e nga karaehe Nanhaiya he hoahoa whakamahana me te whakamahana - te nuinga o te whangai, te kopiri me nga rohe whakamohoatanga - me te kowhiri i te hau korehau ki te kumea te makuku me te makuku i roto i te whakarewatanga, he mea nui mo nga pūhui kapi me te hygroscopic.

Ko nga korero matua hei tirotiro i mua i to hoko

He rite tonu te ahua o nga oko koeko e rua, he rereke te mahi. Ko enei nga korero e whakatau ana i te pai, te whakaputa me te mau kakahu - nga nama me whakau koe ki runga i tetahi korero.

Tuemi Spec	He aha te tikanga	He aha te take
ōwehenga diameter	Ko te diameter kai-mutunga / mate-mutunga, hei tauira. 45/90, 50/105, 55/110, 65/132, 80/156, 92/188 mm	Ka tautuhi i te karaehe miihini me te roopu whakaputa - me tino rite ki to tauira extruder
L/D ōwehenga	Te roa tukatuka whai hua vs diameter	He roa ake te roa whai hua = nui ake te wa noho mo te whakakotahitanga me te whakaheke hau
Koeke rauemi	38CrMoAlA nitrided maitai, W6Mo5Cr4V2, HIP paura maitai, bimetallic ranei	Ka peia tika te mau kakahu me te aukati waikura ki nga puhui kua whakakiia/PVC
Te maimoatanga mata me te pakeke	Nitriding, whakakikorua chrome, koranu bimetallic, rehu tungsten-carbide ranei	Ka rehuhia e Nanhaiya he paparanga koranu-a-tungsten hei toro atu62 HRCi roto i te oko me te 58 HRC
Te hohonu o te paparanga konumohe	Te mātotoru o te paparanga o roto-ātete mau	Ko te paparanga bimetallic o Nanhaiya he 2.5–3 mm — he paparanga hohonu ake te tikanga he matapihi ratonga roa ake
Te whakawātea tīwiri/paera	Te mokowhiti i waenga i te pito rererangi me te pakitara rewa	Nui rawa = te ngaronga pehanga me te iti o te putanga; he pai, he tika te aputa ka mau tonu te kaha
Te manawanui / tika	Te mahi miihini o te waahanga kua oti	Ka mau a Nanhaiya i nga oko mahanga koeko ki te ± 0.0005 mm mo te pai riterite, te tukurua.
Te kaha putanga (kg/h)	Whakatauhia te whakaputanga mo te rahi	Ko te nama kaihoko raina raro — whakaritea ki to tere raina me to hua

Tuhipoka Ahumahi Whanui:Ko nga tohu rahi o te koeko penei i te 45/90, 65/132 ranei (te whanui whangai/mate i roto i te mm) he mea noa puta noa i nga mihini koeko momo SJZ, no reira ka taea te whakaritea ki te peeke o te waa. Whakamau tonu ki te tuhi, tauira ranei i mua i te ota. Ka taea e koe te kite i nga rahi paerewa i runga i ta maataukoeko mahanga oko tīwiriwharangi.

Koeko me te whakarara mahanga mahanga oko

Ko te tino patai a nga kaihoko ko te hiahia he koeko, he amahanga whakarara screw barrel. Ko nga mea e rua he mahanga, he hononga - engari he rereke nga mahi a te ahuahanga. I roto i te poto: hiranga koeko i te tika PVC/WPC extrusion o putorino, kōtaha me te poari; he kaha ake te whakarara mo te whakahiato, masterbatch me nga hanganga whakakī tino teitei.

Tauwehe	Koeko mahanga kaka huriwiri	Parallel twin screw barrel
Te whanonga whangai	Te whakatuwhera kai nui - he pai ake te whakauru mo te paura iti-nui-kiato	He rite ake te whangai mo te whakahuihui me te whangai pire
Kōpeketanga	Te kōpeketanga teitei i hangaia ki roto i te āhuahanga tapatapahi	He nui ake te taapiri i te taha o te diameter kua whakaritea
Te wera / kutikuti	He ngawari, he whakahaere whakahaere - he pai mo te PVC wera-tairongo	Te kutikuti teitei ake - he pai ake mo te ranu kaha me te marara
Te whakamahi angamaheni	PVC paipa, kōtaha, pepa, WPC, tāpa kapia	Masterbatch, whakahuihui, teitei-CaCO₃ me te mahi ki tonu i te karaihe
Te tiaki	Ko te kakahu me te whakawātea me tino aro turuki i te taper	I te nuinga o nga wa ka ngawari ake te paerewa ahuahanga me te whakakapi huānga

He ture whai hua: mena ko to hua mutungakoko te extrudate (he paipa, he papa ranei i te taha tonu o te mate), ko te tikanga he taputapu tika te peera hiko mahanga. Mēnā kei te mahi pire koe, kei te marara ranei i tetahi kete taapiri, titiro ki te paera wiri mahanga whakarara — ina koa ko te momo hurihuri-a-whakaaro mo nga uta warowairo teitei rawa atu. Kaore koe e mohio ko tehea e pai ana ki to raina? To tatoutīwiri kotahi, nga awhe koeko me nga awhe whakarara e whakaatuhia ana i runga i tewhārangi hua.

Nga tono noa

Na te mea he whakakotahi i te kai kaha, te kopiri teitei me te kutikuti ngawari, ko te wiri mahanga koeko me te oko ko te mahi o te maataki-PVC me te raima-rakau. He pai te mahi mo:

PVC paipa— te tuku wai, te whakaheke me te paipa paipa mai i te pvc whakaranu maroke.
Kōtaha PVC— nga tohu matapihi me nga tatau, te herenga taha me te kuti.
Papa PVC me te pepa— papa pahuka, pepa mapere me te papa pahuka noa (tirohia ta maatauPapa PVC koeko mahanga oko tīwiri).
WPC (rakau-kirihou hiato)— te rahoraho, nga panui pakitara me nga korero mai i nga puhui kua whakakiia ki te muka-rakau.
Ko nga hua e pa ana ki te PE me te kapia-tile— tae atu ki te taera tuanui kapia kowakawaka me nga tuhinga kua whakakiia ki te PE.
PVC pelletizing— te huri i te PVC maroke-whakaranu ki roto i nga kirikiri mo te whakamahi whakararo.

PVC board conical twin screw barrel for foam and marble sheet extrusion — Koeko mahanga kaitahuri oko whirihora mo te papa PVC me te tango pahuka-pepa.

Me pehea te whiriwhiri i te peera hiko mahanga mahanga tika

E toru nga patai ka puta mai i te kowhiringa: he aha nga rauemi e whakahaere ana koe, he aha te putanga e hiahiatia ana e koe, me te kaha o to hangai? Whakamahia te matrix i raro nei hei timatanga, katahi ka whakauhia te rahi tika ki to miihini.

To rauemi / hiahia	Te whirihoranga kua tohua	Te mata / rauemi whiriwhiri
Pupa PVC pakari me te tohu	Paerewa āhuahanga koeko te rahi ki to whakaunu (hei tauira 55/110, 65/132)	Nitrided 38CrMoAlA mo te PVC ma, iti-whakakii
PVC + whakakī CaCO₃ teitei	He koeko me te rohe kakahu whakakaha, ka piki ake ranei ki te huri-a-whakarara	Paparanga Bimetallic / tungsten-carbide (62 HRC) mo te abrasion
WPC / pūhui muka-rakau	Koeko me te hau kaha me te whakamarumaru kakahu	Bimetallic — muka rakau + whakakī he tino awhi
Te papa pahuka PVC / pepa	Koeko kua whakaritea mo te pāmahana whakarewa me te pehanga pumau	Nitrided, bimetallic ranei i runga i te taumata whakakī
Putanga teitei i runga i te tapuwae kotahi	He nui ake te owehenga diameter me te roa atu ranei te roa whai hua	Whakatauritea te pakeke ki te oma haora me te kawenga whakakī

Ahakoa he aha te whakautu, ko te taahiraa tino nui ko te whakarite i te oko ki to miihini o naianei. Ko nga waahanga koeko he mea tika ki te extruder e rere ana, no reira he tuhi - he tauira ranei me nga rahi matua (te whanui whangai / mate, te tawhiti o waenganui, te roa me nga taipitopito flange) - me kii he whakakapinga tika, kaua ki te waahanga "tata". Mena ka hiahia koe ki te raina katoa, kaua ki te waahanga, ka hangaia ano e matoumihini extruder oti.

Te whakaurunga me nga waea waea

Ka mahi noa te oko tika mena ka whakauruhia he tapawha, kia ma, kia tika te whakamahana. Ko nga kaupae i raro nei he tirohanga whanui — me whai tonu i te pukapuka a to kaihanga miihini me nga tikanga maukati.

Whakaitihia te hiko me te kati.Wewetehia te puku me nga whakamahana katoa i mua i te tango i te oko tawhito. Whakapumautia te kaha kore i mua i to tiimata.
Horoia nga kanohi kahui.Tangohia te hiri tawhito, te waro me nga piriti mai i nga kopa me te kimi i nga kanohi kia noho ai nga tuuru hou kia kore e korikori.
Maunga me te tiaaro.Whakanohoia te paera koeko ki te pouaka taputapu/whaanga whare, tirohia te whakakorikori me te huri noa i te ringa i mua i te tono hiko.
Waea nga rohe whakamahana.Honoa ano nga whakamahana roopu me te whakamatao mo ia rohe (whangai → kōpeketanga → ine), ka honoa ia thermocouple ki te hongere kaiwhakahaere tika kia kore he rohe e whakawhiti-waea.
Whakatakotoria he kōtaha waiwai.Whakanuia te oko ki te mahana, ka tuku kia rewa kia rewa te rino ka rewa kia rite i mua i te tiimata o nga wiri - ka timata te makariri i te kino o te taipana.

Aki rohe whakamahana:kia mau te hauhautanga o te rohe whangai me te piki ake te pāmahana ki te mate. Ko nga rohe koretake, he mapi-mapi ranei tetahi o nga tino take o te pupuhi me te pango pango - e tika ana kia tirohia-rua i muri i nga huringa oko.

Raparongoā me te kakahu

Ko te nuinga o nga raru o te oko koeko e kii ana he hua kore iu, he wera nui, he hua kino ranei. Whakamahia tenei ripanga ki te neke tere mai i te tohu ki te whakatika.

Tohutohu	Te take pea	Whakatikatika
He rereke te putanga	Whangai maiorooro, rererangi mau, te paheketanga pāmahana ranei	Tirohia te kai, manatokohia te hau o te rohe, ine i te waatea o te wiri/paera
Te werawera	He taurite te whakamahana, te waku nui, te whakamatao aukati ranei	Tirotiro ia rohe me ia iahiko whakamatao; mapi ano nga thermocouple
Te whakaraerae kino	He he te tatūnga tīwiri, he uwha uwau pau ranei	Manatokohia te whirihoranga; tirohia mo te nui o te waatea mai i te kakahu
Nga raina pango / korikori	Ko nga waahi mate e mau ana i nga mea kua whakahekehia, i nga piro ranei	Pure me te horoi tino; tirohia te mata o te kohao me te mata
He nui / tere te kakahu	Ko te whakakī whakakī, he ngoikore te tiaki, he pakeke ranei i raro i te tohu	Whakapai ake ki te paera bimetallic / tungsten-carbide; whakakaha te tiaki

He mea noa te kakahu - ko te whainga kia puhoi me te matapae. Ko nga whakakī abrasive (CaCO₃, te muka rakau, te karaihe) ka whakaeke tere i te uwha me nga rerenga tere, he aha te utu o te paparanga o roto hohonu ake, uaua ake. Ko te 62 HRC tungsten-taapirihia te mata ka roa ake ki era pūhui i te paerewa 58 HRC oti, ka whakaroa i te wa i waenga i nga hangahanga.

Te rarangi arowhai tiaki

Ko nga arowhai poto, auau ka aukati i nga rahua utu nui. Hangaia enei ki roto i to mahinga:

Wātanga	Takitaki	Mahi
Ia nekehanga	Te pāmahana rohe me te amp	Nga panui rangitaki; whakatewhatewha i te paheketanga mai i te rarangi turanga
Ia wiki	Kounga whakarewa me te whakaoti mata	Kia mataara mo nga korikori hou, nga reera me nga huringa whakaputa
Ia marama	Te horoi me te tirotiro i te kohao mata	Horoia nga wahi mate; titiro mo te piro, te whakakorikori ranei
Ia toru marama	Te whakawātea tīwiri/paera	Ine i te āputa; whakatairite ki te spec ki te whai i te reiti kakahu
Ina hiahiatia	Te whakamahana me te thermocouple tapatahi	Whakakapi i nga roopu i rahua/puoro i mua i te kino o te hua

Pātai auau

He aha te paera wiri mahanga koeo?

He wahanga tangohanga mahanga-whare taapiri e rua nga wiri koeko e huri ana ki roto i tetahi oko koeko e rite ana. Ko te taper e kokopi ana me te whakakikorua i nga rawa mo te poto te roa, ka pai te pai o te peera hiko mo te putorino PVC, te tohu, te pepa me te tangohanga WPC.

He aha nga rauemi e pai ana te whakamahi?

PVC mārō (paipa, kōtaha, papa me te pepa), te hiato rakau-kirihou, nga korero a te PE me te taera kapia, me te pereti PVC. He pai rawa te whakahaere i nga paura whakaranu maroke iti-nui-nui na te nui o te kai-mutunga.

He pehea te rereke mai i te paera wiri mahanga whakarara?

He paera koekoe ka tapiripia me te hanga i te kōpeketanga teitei me te kutikuti ngawari, e pai ana ki te tangohanga PVC/WPC tika. Amahanga whakarara screw barrelka mau tonu te diameter me te kutikuti teitei ake, e pai ana ki te whakahuihui, ki te paparanga matua me nga hanganga whakakii tino teitei.

He aha te whakawātea angamaheni i waenga i te tīwiri me te oko?

Ko te whakawātea ko te āputa iti i waenga i te pito rererangi me te pakitara poka. He pai te whakanoho me te tika ki runga i tetahi waahanga hou; i te mea ka tuwhera mai i te kakahu, te putanga me te heke pehanga. Ko te ine i ia wa ko te huarahi tino marama ki te whai i nga kakahu o te oko.

Me pehea taku whakauru i tetahi oko hiko mahanga koeko?

Whakawetohia ka raka ki waho, horoia nga kanohi kahui, whakairihia me te tiaaro kia huri noa nga wiri, waea tika ki ia rohe whakamahana me te thermocouple, katahi ka ata whakanekehia te paera ki te mahana ka rukuhia i mua i te tiimata o nga tira.

He aha te take e mau ai i roto i nga paera tira mahanga koeko?

Ko te nuinga o nga mea whakakii penei i te konupūmā warowaihā, te muka rakau me te karaehe, he kino rawa atu na te waikura mai i te tukatuka PVC, te ngoikore o te tiaki me te pakeke o raro. Ko te paparanga bimetallic hohonu ake, ko te tungsten-carbide ranei he pai ake te aukati i nga mea e toru.

E hia nga wa me tirotirohia, kia whakakapihia ranei te oko?

Mahia nga arowhai ataata me te purea ia marama me te ine i te waatea i ia marama. Ko te wa whakakapinga e whakawhirinaki ana ki te utaina whakakii me nga haora oma - whai i te ahua o te kakahu kaua ki te tatari mo te rahua, ka hanga, ka whakakapi ranei ina neke ana te whakawāteatanga o mua.

Me pehea taku whiriwhiri i te rahi tika mo taku raina tangohanga?

Whakatauritehia te owehenga diameter me te roa ki to tauira extruder me te whakaputanga whaainga, katahi ka kowhiria he maimoatanga mata i runga i te kaha o to hangai. Tukuna he tuhi, he tauira ranei me nga rahinga matua kia tino tika te oko, ehara i te tata.

Kei te hiahia koe ki tetahi paera mahanga mahanga e rite ana ki to miihini?

Tukuna mai to tuhi - he tauira ranei me nga rahinga matua - ka tohua e o maatau miihini he wiri mahanga koeko e tika ana kia tika te pakeke mo o rawa. Ma te tukatuka nitriding i roto i te whare, bimetallic me te tungsten-carbide, ka hangaia e matou nga waahanga ka eke ki te 62 HRC i roto i te kohao mo te roa o te mahi.

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Nanhaiya (Zhoushan) Miihini Kirihou · 500+ kiritaki o te ao ·takakau, mahanga koeko & mahanga whakararaoko tīwiri