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: Cikakken Jagora zuwa Takaddun bayanai, Aikace-aikace & Zaɓi

2026-08-05 0 Ka bar min sako

By theKungiyar Fasaha ta Nanhaiya- Screw & Barrel Engineering, Zhoushan · An yi bita don daidaiton masana'anta · karanta min 10

Amsa da sauri

Ganga mai dunƙule tagwaye mai jujjuyawar juzu'i ce, ɓangaren extrusion na tagwaye wanda skru guda biyu ke jujjuya cikin ganga mai madaidaici. The tapered geometry yana ba da abinci mai ƙarfi da matsawa a cikin ɗan gajeren tsayi, wanda shine dalilin da ya saconical tagwaye dunƙule da gangashine daidaitaccen zaɓi don bututun PVC, bayanin martaba, takarda da extrusion WPC.

Idan kuna gudanar da layin PVC ko itace-roba, daconical tagwaye dunƙule gangayana daya daga cikin sassan da suka fi yanke hukunci kai tsaye ga kayan aikin ku, narkar da ingancin ku da tsadar gudu. Zaɓi girman da ba daidai ba, abu ko izini kuma kuna biya shi a cikin lalacewa, tarkace da raguwa. Wannan jagorar ya ƙunshi yadda ganga mai juzu'i ke aiki, ƙayyadaddun ƙayyadaddun abubuwan da ke da mahimmanci lokacin siya, yadda ya bambanta da ganga.layi daya tagwayen dunƙule ganga, da kuma yadda za a zaɓa, shigarwa da kuma kula da ɗaya - an rubuta ta hanyar masana'anta da ke sarrafa waɗannan sassa kowace rana.

Conical twin screw barrel manufactured by Nanhaiya — A conical tagwaye dunƙule da ganga saitin - tapered bores ba da gajeren tsawon matsawa manufa domin zafi-m PVC.

Yadda ganga mai dunƙule tagwayen dunƙulewa ke aiki

A cikin aconical tagwaye dunƙule extruder, Screws biyu suna zama gefe da gefe a wani ɗan kusurwa, fadi a ƙarshen ciyarwa kuma kunkuntar a ƙarshen mutuwa. Gangarin yana daɗaɗa don daidaitawa. Yayin da albarkatun kasa ke motsawa daga babban yankin ciyarwar diamita zuwa yankin ƙaramar diamita, ƙarar ƙarar tana matsawa da yin robobi yayin da jirage masu tsaka-tsaki ke isar da kuma haɗuwa. Saboda dunƙule guda biyu suna jujjuya su kuma suna jujjuya gabaɗaya, dunƙule tagwayen conical da ganga suna yin kusan kama da famfon matsuguni - tsayayyen fitarwa a ƙasa mai laushi mai laushi, wanda ke kare polymers masu zafin zafi kamar PVC.

Tsarin ya kasu kashi uku:

Ciyarwa & isarwa- Babban diamita na ƙarshen ciyarwa yana ba da babban ƙarar ci, don haka foda gauraye da ƙananan abubuwa masu ƙarancin yawa (kamar busassun busassun PVC) ana jawo su cikin dogaro ba tare da haɗawa ba.
Matsi & yin filastik- Taper yana rage girman tashar tare da tsayi, ƙaddamar da kayan aiki, fitar da iska da narke shi ta hanyar haɗakar zafi da aikin injiniya.
Mita & fitarwa- kunkuntar metering zone gina wani barga matsa lamba da kuma tura wani uniform, kama narke ta cikin mutuwa a wani sarrafa kudi.

Ganga tana yin fiye da gidan skru. Yana ɗaukar wuraren dumama da sanyaya da ke riƙe kowane mataki a daidai zafin jiki. Gangunan Nanhaiya suna amfani da ƙirar dumama da sanyaya wurare da yawa - yawanci ciyarwa, matsawa da ɓangarorin homogenization - tare da zaɓin iska mai iska don cire danshi da ɓarna daga narke, wanda ke da mahimmanci ga mahaɗan cike da hygroscopic.

Mabuɗin bayanai don bincika kafin siye

Ganga masu juzu'i biyu na iya kamanni iri ɗaya kuma suna yin aiki daban. Waɗannan su ne ƙayyadaddun ƙayyadaddun da ke yanke shawarar dacewa, fitarwa da lalacewa - lambobin da yakamata ku tabbatar akan kowane zance.

Specific abu	Abin da ake nufi	Me ya sa yake da mahimmanci
Girman diamita	Diamita na ƙarshen ciyarwa/mutuwa, misali. 45/90, 50/105, 55/110, 65/132, 80/156, 92/188 mm	Yana saita ajin injin da kayan fitarwa - dole ne ya dace da ƙirar extruder ɗinku daidai
rabon L/D	Tsawon aiki mai inganci vs diamita	Dogon tasiri mai tsayi = ƙarin lokacin zama don cikakken fusion da degassing
Matsayin kayan abu	38CrMoAlA nitrided karfe, W6Mo5Cr4V2, HIP foda karfe, ko bimetallic	Masu tuƙi kai tsaye suna lalata rayuwa da juriya na lalata da abubuwan da aka cika/PVC
Maganin saman da tauri	Nitriding, chrome plating, bimetallic gami ko tungsten-carbide spray	Nanhaiya ta fesa wani abin da aka kara da tungsten don isa62 HRCcikin ganga vs na al'ada 58 HRC
Alloy Layer zurfin	Kauri na ciki mai jure lalacewa	Layer bimetallic na Nanhaiya shine 2.5-3 mm - Layer mai zurfi yana nufin taga sabis mai tsayi mai amfani.
Screw/barrel barrell	Tazarar da ke tsakanin tip ɗin jirgin da bangon bango	Yayi girma = asarar matsa lamba da ƙarancin fitarwa; m, daidai rata yana kiyaye inganci high
Haƙuri / madaidaiciya	Machining madaidaicin sashin da ya gama	Nanhaiya tana riƙe da ganga tagwaye masu jujjuya zuwa ±0.0005 mm don daidaitacce, mai maimaitawa
Ƙarfin fitarwa (kg/h)	An ƙididdige kayan aiki don girman	Lambar mai siye ta ƙasa-daidaita shi da saurin layinku da samfurin ku

Bayanin masana'antu na gabaɗaya:Nau'in girman ma'auni kamar 45/90 ko 65/132 (feed/diamita diamita a mm) sun zama ruwan dare a cikin injunan juzu'i na nau'in SJZ, don haka ganga da aka kayyade ta wannan hanyar sau da yawa ana iya daidaitawa da mai fitarwa. Koyaushe tabbatarwa akan zane ko samfurin kafin yin oda. Kuna iya ganin daidaitattun masu girma dabam akan muconical tagwaye dunƙule gangashafi.

Conical vs layi daya twin dunƙule ganga

Tambayar da aka fi sani da masu saye suna yi ita ce ko suna buƙatar conical ko alayi daya tagwayen dunƙule ganga. Dukansu tagwaye ne, duka biyun tsaka-tsaki - amma lissafi ya dace da ayyuka daban-daban. A takaice: conical ya fi dacewa a kai tsaye PVC / WPC extrusion na bututu, bayanin martaba da jirgi; layi daya ya fi karfi don hadawa, masterbatch da manyan abubuwan da ake cikawa.

Factor	Conical twin dunƙule ganga	Daidaitaccen tagwayen dunƙule ganga
Halin ciyarwa	Babban buɗewar ciyarwa - mafi kyawun ci don ƙarancin ƙarancin girma	Ƙarin ciyarwa iri ɗaya don haɗawa da ciyarwar pellet
Matsi	Babban matsawa da aka gina a cikin ma'aunin lissafi	Ƙarin matsawa akai-akai tare da tsayayyen diamita
Heat / tsage	M, sarrafawa sarrafawa - mai kyau ga PVC mai zafi	Higher karfi - mafi alhẽri ga m hadawa da watsawa
Amfani na yau da kullun	PVC bututu, profile, sheet, WPC, guduro tayal	Masterbatch, haɗawa, babban-CaCO₃ da aikin cika gilashi
Kulawa	Sawa da sharewa suna buƙatar kulawa ta kusa a taper	Sau da yawa sauƙin daidaita lissafin lissafi da maye gurbin abubuwa

Doka mai amfani na babban yatsan hannu: idan samfurin ku na ƙarsheshineda extrudate (bututu ko allo kai tsaye kashe mutu), a conical tagwaye dunƙule ganga yawanci dama kayan aiki. Idan kuna yin pellets ko tarwatsa fakitin ƙari mai buƙata, duba ganga tagwayen dunƙule mai kama da juna - musamman nau'in jujjuyawar juzu'i don manyan lodin carbonate. Ba tabbata wanda ya dace da layinku? Mudunƙule guda ɗaya, madaidaicin jeri da layi daya duk ana nuna su akansamfurin page.

Aikace-aikace gama gari

Saboda yana haɗe da ciyarwa mai ƙarfi, matsawa mai ƙarfi da ƙarfi mai laushi, dunƙule tagwayen conical da ganga ita ce dokin aiki na m-PVC da extrusion itace-roba. Yana aiki mafi kyau ga:

PVC bututu- samar da ruwa, magudanar ruwa da bututu daga busassun hada-hadar PVC.
Bayanan martaba na PVC- bayanin martabar taga da kofa, bandeji na gefe da datsa.
PVC allon & takarda- allon kumfa, takardar kallon marmara da allon kumfa kyauta (duba muPVC allon conical tagwaye dunƙule ganga).
WPC (itace-roba hade)- decking, bangon bango da bayanan martaba daga mahadi masu cike da fiber-fiber.
Abubuwan tushen PE da resin-tile- gami da tile rufin rufin da aka yi masa gwangwani da bayanan martaba masu cike da PE.
PVC pelletizing- juya PVC busassun gauraya zuwa granules don amfanin ƙasa.

PVC board conical twin screw barrel for foam and marble sheet extrusion — Conical twin dunƙule ganga kaga don PVC jirgin da kumfa-sheet extrusion.

Yadda ake zabar ganga mai dunƙule tagwaye daidai

Zaɓin ya sauko zuwa tambayoyi uku: wane kayan aiki kuke gudanarwa, wane kayan aiki kuke buƙata, kuma yaya ƙirƙira ɗinku yake? Yi amfani da matrix da ke ƙasa azaman mafari, sannan tabbatar da ainihin girman mashin ɗin ku.

Kayan ku / buƙatun ku	Tsarin da aka ba da shawarar	Zabin saman / abu
PVC bututu & profile	Madaidaicin juzu'i na juzu'i masu girma zuwa mai fitar da ku (misali 55/110, 65/132)	Nitrided 38CrMoAlA don tsabta, ƙarancin filler PVC
PVC + high CaCO₃ filler	Conical tare da ƙarfafa yankin lalacewa, ko mataki zuwa mai jujjuyawar layi ɗaya	Bimetallic / tungsten-carbide Layer (62 HRC) don abrasion
WPC / itace-fiber mahadi	Conical tare da iska mai ƙarfi da sa kariya	Bimetallic - itace fiber + fillers suna da ƙura sosai
PVC kumfa allon / takarda	Conical kunna don sarrafa zafin narke da kuma barga matsa lamba	Nitrided ko bimetallic dangane da matakin filler
Babban fitarwa akan sawu ɗaya	Matsakaicin girman diamita da/ko tsayi mai tasiri	Daidaita taurin don gudanar da sa'o'i da kayan cikawa

Ko menene amsar, mataki guda mafi mahimmanci shine daidaita ganga da injin da kuke da shi. Sassan maɓalli suna da kyau al'ada ga extruder da suke gudana a ciki, don haka zane - ko samfurin tare da maɓalli maɓalli (ciyar / diamita mai mutu, nisa ta tsakiya, tsayin gabaɗaya da cikakkun bayanan flange) - yana ba mu damar faɗi ainihin maye gurbin da ya dace maimakon ɓangaren "kusa da isa". Idan kuna buƙatar layin gaba ɗaya maimakon ɓangaren, mu ma muna ginawacikakken extruder inji.

Tushen shigarwa da wayoyi

Madaidaicin ganga yana aiki ne kawai idan an shigar da shi murabba'i, mai tsabta kuma mai zafi daidai. Matakan da ke ƙasa taƙaitaccen bayani ne - koyaushe ku bi umarnin maginin injin ku da hanyoyin kullewa.

Rage wuta & kullewa.Ware tuƙi da duk masu dumama kafin cire tsohuwar ganga. Tabbatar da kuzarin sifili kafin farawa.
Tsaftace fuskokin mating.Cire tsoho mai siliki, carbon da burrs daga flanges da gano fuskoki don haka sabbin kujerun ganga ba tare da murdiya ba.
Dutsen da daidaita.Daidaita ganga conical zuwa akwatin gear/gidan ciyarwa, duba maida hankali da cewa skru suna juya da hannu da hannu kafin a yi amfani da wutar lantarki.
Waya yankunan hita.Sake haɗa na'urorin dumama da sanyaya kowane yanki (ciyarwa → matsawa → metering), kuma haɗa kowane thermocouple zuwa tashar mai sarrafawa daidai don haka babu wani yanki da aka ketare.
Saita bayanin martaba.Kawo ganga har zuwa zafin jiki sannu a hankali kuma bar shi ya jiƙa don haka karfe kuma ya narke daidai kafin ka fara screws - farawa sanyi yana haifar da lalacewa.

Tushen mai zafi:kiyaye yankin ciyarwa yayi sanyi da kuma matsawa yanayin zafi sama zuwa ga mutuwa. Wuraren da ba a daidaita su ba ko ba a tsara taswira ba suna ɗaya daga cikin abubuwan da suka fi zama sanadin ƙwanƙwasawa da baƙar fata - darajar dubawa sau biyu bayan kowace canjin ganga.

Shirya matsala da sawa

Mafi yawan matsalolin ganga conical suna sanar da kansu a matsayin fitarwa mara ƙarfi, zafi fiye da kima ko ƙazantaccen samfur. Yi amfani da wannan tebur don matsawa da sauri daga alama zuwa abin da zai iya haifar da gyarawa.

Alama	Mai yuwuwa dalili	Gyara
Fitowa yana jujjuyawa / haɓakawa	Ciyar da rashin daidaituwa, sawa da jiragen sama, ko yanayin zafi	Bincika ciyarwa, tabbatar da yanayin yanki, auna madaidaicin dunƙule/ganga
Yin zafi fiye da kima	Rashin daidaituwar wutar lantarki, wuce gona da iri, ko sanyaya da aka toshe	Duba kowane yanki da kewayen sanyaya; sake taswirar thermocouples
Rashin aikin filastik	Saitin dunƙule mara kyau ko rigar ganga da aka sawa	Tabbatar da tsari; bincika don ƙarin sharewa daga lalacewa
Baƙi Lines / streaks	Matattun tabo suna riƙe da ƙasƙantaccen abu, ko ƙima	Tsaftace da tsaftacewa sosai; duba guntu da dunƙule surface
Yawan lalacewa / saurin sawa	Filler mai ƙyalli, rashin kulawa, ko taurin ƙima	Haɓaka zuwa ganga bimetallic / tungsten-carbide; tsaurara kula

Wear al'ada ne - makasudin shine sanya shi jinkirin da tsinkaya. Filayen abrasive (CaCO₃, fiber na itace, gilashi) suna kai hari ga magudanar ruwa da jiragen sama da sauri, wanda shine ainihin dalilin da ya sa zurfin ciki mai zurfi ya biya kansa. Ƙaddamar da 62 HRC tungsten da ke daɗaɗawa kawai a kan waɗannan mahadi fiye da daidaitaccen 58 HRC gama, yana shimfiɗa tazara tsakanin sake ginawa.

Lissafin kulawa

Short, dubawa na yau da kullun yana hana gazawar tsada. Gina waɗannan cikin ayyukan yau da kullun:

Tazara	Duba	Aiki
Kowane motsi	Yanayin yanki & amps	Karatun log; bincika duk wani ragi daga tushe
mako-mako	Narke inganci & gamawar saman	Duba don sababbin ɗigon ruwa, gels ko canjin fitarwa
kowane wata	Tsaftace & gani mara kyau/ duban dunƙulewa	Tsaftace matattun tabo; nemi maki ko canza launi
Kwata kwata	Screw/barrel barrell	Auna tazarar; kwatanta da ƙayyadaddun bayanai don biyan ƙimar lalacewa
Kamar yadda ake bukata	Heater & thermocouple mutunci	Maye gurbin makada / firikwensin da ya gaza kafin su haifar da mummunan samfur

Tambayoyin da ake yawan yi

Menene ganga dunƙule tagwaye?

Abu ne da aka ɗora tagwaye-bore extrusion a cikinsa wanda screws guda biyu ke juyawa a cikin ganga mai madaidaici. The taper compresses da plasticizes abu a kan wani gajeren tsawon, yin conical dunƙule ganga manufa domin PVC bututu, profile, sheet da WPC extrusion.

Wadanne kayan ne aka fi amfani dasu?

M PVC (bututu, profile, allo da takardar), itace-roba hade, PE tushen profiles da guduro tile, da PVC pelletizing. It handles low-bulk-density dry-blend powders especially well thanks to its large feed-end intake.

Ta yaya ya bambanta da ganga tagwayen dunƙule a layi daya?

Ganga mai jujjuyawar magudanar ruwa kuma yana gina babban matsawa tare da karas mai laushi, wanda ya dace da extrusion PVC/WPC kai tsaye. Alayi daya tagwayen dunƙule gangayana riƙe da diamita akai-akai da ƙarar ƙarfi, wanda ya dace da haɗawa, masterbatch da ƙirar ƙira mai girma sosai.

Menene daidaitaccen sharewa tsakanin dunƙule da ganga?

Tsare-tsare shine ƙaramin tazara tsakanin titin jirgin da bangon da ba a iya gani ba. An saita shi sosai kuma daidai akan sabon sashi; yayin da yake buɗewa daga lalacewa, fitarwa da raguwar matsa lamba. Auna shi lokaci-lokaci shine hanya mafi bayyananne don bin diddigin rigar ganga.

Ta yaya zan girka ganga tagwayen dunƙule na conical?

Ƙaddamar da wutar lantarki kuma kulle waje, tsaftace fuskokin mating, hawa da daidaitawa don haka screws su juya da yardar kaina, waya kowane yanki mai zafi da thermocouple daidai, sannan kawo ganga har zuwa zafin jiki a hankali kuma a jiƙa ta kafin fara screws.

Menene ke haifar da lalacewa a cikin ganga tagwayen dunƙulewa?

Mafi yawan abubuwan da ke lalata kamar su calcium carbonate, fiber na itace da gilashi, sun yi muni ta hanyar lalata daga sarrafa PVC, rashin kulawa da ƙarancin ƙayyadaddun taurin. Mafi zurfin bimetallic ko tungsten-carbide Layer yana tsayayya da duka uku mafi kyau.

Sau nawa ya kamata a bincika ko maye gurbin ganga?

Yi dubawa na gani da gogewa kowane wata kuma auna sharewa kowane wata. Lokacin maye gurbin ya dogara da nauyin filler da sa'o'i masu gudana - bibiyar yanayin lalacewa maimakon jiran gazawa, da sake ginawa ko maye gurbin da zarar izinin ya wuce ƙayyadaddun bayanai.

Ta yaya zan zabi girman da ya dace don layin extrusion na?

Daidaita ma'aunin diamita da tsayi zuwa samfurin extruder ɗin ku da fitarwar manufa, sannan zaɓi jiyya ta saman kan yadda ƙirarku ta lalace. Aika zane ko samfurin tare da maɓalli mai mahimmanci don haka ganga ya dace daidai, ba ƙima ba.

Kuna buƙatar ganga tagwaye mai juzu'i wanda ya dace da injin ku?

Aiko mana da zanen ku - ko samfurin tare da maɓalli maɓalli - kuma injiniyoyinmu za su fayyace ainihin madaidaicin dunƙule tagwaye da ganga tare da madaidaicin taurin kayanku. Tare da nitriding na cikin gida, sarrafa bimetallic da tungsten-carbide, muna gina sassan da suka kai 62 HRC a cikin buro don tsawon rayuwar sabis.

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Nanhaiya (Zhoushan) Injin Filastik · 500+ abokan ciniki na duniya ·guda ɗaya, conical tagwaye & layi daya tagwayedunƙule ganga