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: Itọsọna pipe si Awọn alaye lẹkunrẹrẹ, Awọn ohun elo & Aṣayan

2026-08-05 0 Fi ifiranṣẹ ranṣẹ si mi

Nipasẹ awọnNanhaiya Technical Team- Screw & Barrel Engineering, Zhoushan · Atunwo fun iṣedede ile-iṣẹ · ~ 10 min kika

Idahun kiakia

A conical ibeji dabaru agba ni a tapered, ibeji-bi extrusion paati ninu eyi ti meji conical skru yiyi inu kan ti o baamu agba conical. Awọn tapered geometry gbà lagbara ono ati ki o ga funmorawon ni kukuru ipari, ti o jẹ idi ti awọnconical ibeji dabaru ati agbajẹ yiyan boṣewa fun paipu PVC, profaili, dì ati extrusion WPC.

Ti o ba ṣiṣe a PVC tabi igi-ṣiṣu ila, awọnconical ibeji dabaru agbajẹ ọkan ninu awọn apakan ti o ṣe ipinnu taara taara rẹ, didara yo ati idiyele ṣiṣe. Yan iwọn ti ko tọ, ohun elo tabi idasilẹ ati pe o sanwo fun ni yiya, alokuirin ati akoko isinmi. Itọsọna yii ni wiwa bi agba skru conical ṣe n ṣiṣẹ, awọn pato ti o ṣe pataki nigbati o ra, bawo ni o ṣe yatọ sini afiwe ibeji dabaru agba, ati bi o ṣe le yan, fi sori ẹrọ ati ṣetọju ọkan - ti a kọ lati irisi ti ile-iṣẹ ti o n ṣe awọn ẹya wọnyi ni gbogbo ọjọ.

Conical twin screw barrel manufactured by Nanhaiya — A conical ibeji dabaru ati agba ṣeto - awọn tapered bores fun kukuru-ipari funmorawon apẹrẹ fun ooru-kókó PVC.

Bawo ni a conical ibeji dabaru agba ṣiṣẹ

Ninu aconical ibeji dabaru extruder, Awọn skru meji joko ni ẹgbẹ ni ẹgbẹ ni igun diẹ, fifẹ ni opin kikọ sii ati dín ni ipari ku. Agba bores taper lati baramu. Bi awọn ohun elo aise ṣe n gbe lati agbegbe kikọ sii iwọn ila opin nla si agbegbe iwọn iwọn ila opin kekere, iwọn didun idinku dinku ati ṣe ṣiṣu lakoko ti awọn ọkọ ofurufu intermeshing n gbejade ati dapọ. Nitori awọn meji skru counter-yiyi ati ni kikun intermesh, awọn conical ibeji dabaru ati agba ìgbésẹ fere bi a rere-nipopo fifa - dada o wu ni kekere, onírẹlẹ rirẹ-run, eyi ti o ndaabobo ooru-kókó polima bi PVC.

Ilana naa pin si awọn ipele mẹta:

Ifunni & gbigbe- iwọn ila opin ifunni nla n funni ni iwọn gbigbe nla, nitorinaa awọn idapọpọ lulú ati awọn ohun elo iwuwo-kekere (gẹgẹbi PVC gbigbẹ gbigbẹ) ni a fa ni igbẹkẹle laisi gbigbe.
Funmorawon & plasticizing- taper naa dinku iwọn didun ikanni ni gigun, sisọpọ ohun elo, ṣe afẹfẹ jade ati yo o nipasẹ ooru apapọ ati iṣẹ ẹrọ.
Mita & itujade- agbegbe iwọn mita dín kọ titẹ iduroṣinṣin ati titari aṣọ kan, yo isokan nipasẹ ku ni iwọn iṣakoso.

Awọn agba wo ni diẹ ẹ sii ju ile awọn skru. O gbe igbona ati awọn agbegbe itutu agbaiye ti o di ipele kọọkan mu ni iwọn otutu ti o tọ. Awọn agba Nanhaiya lo alapapo agbegbe pupọ ati apẹrẹ itutu agbaiye - igbagbogbo ifunni, funmorawon ati awọn agbegbe isokan - pẹlu iyanfẹ igbale lati fa ọrinrin ati awọn iyipada kuro ninu yo, eyiti o ṣe pataki fun kikun ati awọn agbo ogun hygroscopic.

Awọn pato bọtini lati ṣayẹwo ṣaaju ki o to ra

Awọn agba conical meji le dabi aami ati ṣe ni iyatọ pupọ. Iwọnyi ni awọn pato ti o pinnu ibamu, iṣelọpọ ati igbesi aye wọ - awọn nọmba ti o yẹ ki o jẹrisi lori asọye eyikeyi.

Spec ohun kan	Ohun ti o tumo si	Kini idi ti o ṣe pataki
Iwọn iwọn ila opin	Opin kikọ sii/opin opin, fun apẹẹrẹ. 45/90, 50/105, 55/110, 65/132, 80/156, 92/188 mm	Ṣeto kilasi ẹrọ ati ẹgbẹ iṣelọpọ - gbọdọ baamu awoṣe extruder rẹ gangan
Ipin L/D	Munadoko processing ipari vs opin	Gigun ti o munadoko gigun = akoko ibugbe diẹ sii fun idapọ kikun ati degassing
Ipele ohun elo	38CrMoAlA nitrided, irin, W6Mo5Cr4V2, HIP lulú irin, tabi bimetallic	Awọn awakọ taara wọ igbesi aye ati resistance ipata lodi si awọn agbo ogun ti o kun/PVC
Itọju dada & lile	Nitriding, chrome plating, bimetallic alloy tabi tungsten-carbide spray	Nanhaiya fun sokiri iyẹfun alloy ti a ṣafikun tungsten lati de ọdọ62 HRCinu agba vs aṣoju 58 HRC
Alloy Layer ijinle	Sisanra ti awọn wọ-sooro akojọpọ Layer	Layer bimetallic Nanhaiya jẹ 2.5–3 mm — Layer jinle tumọ si ferese iṣẹ lilo to gun.
dabaru / agba kiliaransi	Aafo laarin flight sample ati bí odi	O tobi ju = pipadanu titẹ ati iṣelọpọ kekere; a ju, deede aafo ntọju ṣiṣe ga
Ifarada / gígùn	Machining konge ti awọn ti pari apa	Nanhaiya di awọn agba ibeji conical di ± 0.0005 mm fun ibamu deede
Agbara iṣẹjade (kg/h)	Ti won won losi fun awọn iwọn	Nọmba ti o ra laini isalẹ - baramu rẹ si iyara laini ati ọja rẹ

Akọsilẹ ile-iṣẹ gbogbogbo:conical iwọn designations bi 45/90 tabi 65/132 (kikọ sii / kú opin ni mm) jẹ wọpọ kọja SJZ-Iru conical ero, ki a agba pàtó kan ọna yi le igba wa ni ti baamu si ohun ti wa tẹlẹ extruder. Nigbagbogbo jẹrisi lodi si iyaworan tabi ayẹwo ṣaaju ki o to paṣẹ. O le wo awọn iwọn boṣewa lori waconical ibeji dabaru agbaoju-iwe.

Conical vs ni afiwe ibeji dabaru agba

Ibeere ti o wọpọ julọ ti awọn olura beere ni boya wọn nilo conical tabi ani afiwe ibeji dabaru agba. Mejeji jẹ ibeji-skru, mejeeji intermesh - ṣugbọn geometry baamu awọn iṣẹ oriṣiriṣi. Ni kukuru: conical tayọ ni taara PVC / WPC extrusion ti paipu, profaili ati ki o ọkọ; afiwera ni okun sii fun sisọpọ, masterbatch ati awọn agbekalẹ kikun-giga pupọ.

Okunfa	Conical ibeji dabaru agba	Ni afiwe ibeji dabaru agba
Iwa kikọ sii	Nsii kikọ sii nla - gbigbemi to dara julọ fun erupẹ iwuwo-kekere	Ifunni aṣọ aṣọ diẹ sii fun sisọpọ ati awọn kikọ sii pellet
Funmorawon	Ga funmorawon itumọ ti sinu tapered geometry	Diẹ ibakan funmorawon pẹlú kan ti o wa titi opin
Ooru / irẹrun	Onírẹlẹ, iṣakoso iṣakoso - o dara fun PVC ti o ni imọra-ooru	Irẹrun ti o ga julọ - dara julọ fun dapọ aladanla ati pipinka
Aṣoju lilo	PVC paipu, profaili, dì, WPC, resini tile	Masterbatch, compounding, giga-CaCO₃ ati iṣẹ ti o kun gilasi
Itoju	Wọ ati kiliaransi nilo ibojuwo to sunmọ ni taper	Igba rọrun geometry Standardization ati aropo ano

Ofin ti o wulo ti atanpako: ti ọja ipari rẹ baniextrudate (a paipu tabi a ọkọ gígùn pa kú), a conical ibeji dabaru agba jẹ maa n ọtun ọpa. Ti o ba n ṣe awọn pellets tabi tuka package afikun ti o nbeere, wo agba twin skru ti o jọra - ni pataki iru iyipo-yiyi fun awọn ikojọpọ kaboneti ti o ga pupọ. Ko daju eyi ti o baamu laini rẹ? Tiwanikan dabaru, conical ati ki o ni afiwe awọn sakani ti wa ni gbogbo han lori awọnawọn ọja iwe.

Awọn ohun elo ti o wọpọ

Nitoripe o ṣajọpọ ifunni ti o lagbara, funmorawon giga ati rirẹ-rẹlẹ, skru conical twin ati agba jẹ iṣẹ iṣẹ ti PVC-kosemi ati extrusion igi-ṣiṣu. O ṣiṣẹ dara julọ fun:

PVC paipu- omi-ipese, idominugere ati conduit paipu lati gbẹ-parapo PVC.
PVC profaili- window ati awọn profaili ilẹkun, banding eti ati gige.
PVC ọkọ & dì- ọkọ foomu, iwe didan-wo dì ati igbimọ foomu ọfẹ (wo waPVC ọkọ conical ibeji dabaru agba).
WPC (igi-ṣiṣu apapo)- decking, odi paneli ati awọn profaili lati igi-fiber-kún agbo.
PE-orisun ati resini-tile awọn ọja- pẹlu corrugated resini orule tile ati PE-kún awọn profaili.
PVC pelletizing- titan PVC gbẹ-parapo sinu granules fun ibosile lilo.

PVC board conical twin screw barrel for foam and marble sheet extrusion — Conical ibeji dabaru agba ni tunto fun PVC ọkọ ati foomu-dì extrusion.

Bawo ni lati yan awọn ọtun conical ibeji dabaru agba

Aṣayan wa si isalẹ si awọn ibeere mẹta: ohun elo wo ni o nṣiṣẹ, irujade wo ni o nilo, ati bawo ni abrasive ṣe agbekalẹ rẹ? Lo matrix ni isalẹ bi aaye ibẹrẹ, lẹhinna jẹrisi iwọn gangan lodi si ẹrọ rẹ.

Ohun elo rẹ / nilo	Aba iṣeto ni	dada / aṣayan ohun elo
Kosemi PVC paipu & profaili	Jiometirika conical boṣewa ti o jẹ si olutayo rẹ (fun apẹẹrẹ 55/110, 65/132)	Nitrided 38CrMoAlA fun mimọ, PVC kikun-kekere
PVC + giga CaCO₃ kikun	Conical pẹlu agbegbe yiya ti a fikun, tabi igbesẹ soke si atako-yiyi ti o jọra	Layer Bimetallic / tungsten-carbide (62 HRC) fun abrasion
WPC / igi-fiber agbo	Conical pẹlu venting ti o lagbara ati aabo wọ	Bimetallic - okun igi + awọn ohun elo jẹ abrasive pupọ
PVC foomu ọkọ / dì	Conical aifwy fun iṣakoso iwọn otutu yo ati titẹ iduroṣinṣin	Nitrided tabi bimetallic da lori ipele kikun
Ijade giga lori ifẹsẹtẹ kanna	Iwọn iwọn ila opin ti o tobi ju ati/tabi ipari to munadoko to gun	Baramu lile lati ṣiṣe awọn wakati ati fifuye kikun

Ohunkohun ti idahun, awọn nikan julọ pataki igbese ni ibamu awọn agba si rẹ tẹlẹ ẹrọ. Awọn ẹya conical jẹ aṣa imunadoko si extruder ti wọn ṣiṣẹ ninu, nitorinaa iyaworan - tabi apẹẹrẹ pẹlu awọn iwọn bọtini (ifunni / ku iwọn ila opin, ijinna aarin, ipari gbogbogbo ati awọn alaye flange) - jẹ ki a sọ asọye ti o baamu deede dipo apakan “sunmọ to”. Ti o ba nilo gbogbo ila kuku ju paati, a tun kọpipe extruder ero.

Fifi sori ẹrọ ati awọn ipilẹ onirin

A konge agba nikan ṣe ti o ba ti fi sori ẹrọ square, o mọ ki o ti tọ kikan. Awọn igbesẹ ti o wa ni isalẹ jẹ Akopọ gbogbogbo - nigbagbogbo tẹle awọn ilana afọwọṣe agbele ẹrọ rẹ ati awọn ilana titiipa.

Agbara si isalẹ & tiipa.Ya sọtọ awakọ ati gbogbo awọn igbona ṣaaju ki o to yọ agba atijọ kuro. Jẹrisi agbara odo ṣaaju ki o to bẹrẹ.
Mọ awọn oju ibarasun.Yọ ohun mimu atijọ kuro, erogba ati burrs lati awọn flanges ati wiwa awọn oju ki awọn ijoko agba tuntun laisi ipalọlọ.
Òke ati mö.Darapọ agba conical si apoti jia / ile ifunni, ṣayẹwo ifọkansi ati pe awọn skru yipada larọwọto nipasẹ ọwọ ṣaaju lilo agbara.
Waya awọn agbegbe igbona.Tun awọn ẹrọ igbona ẹgbẹ pọ ati itutu agbaiye fun agbegbe kan (kikọ sii → titẹkuro → wiwọn), ki o si so thermocouple kọọkan pọ si ikanni oludari to tọ nitorina ko si agbegbe kan ti o ni agbekọja.
Ṣeto profaili Rẹ.Mu agba naa wa si iwọn otutu laiyara ki o jẹ ki o rọ bẹ, irin ki o yo dọgba ṣaaju ki o to bẹrẹ awọn skru - ti o bẹrẹ awọn eewu tutu bibajẹ.

Italolobo agbegbe igbona:jẹ ki agbegbe kikọ sii tutu ati ki o tẹ awọn iwọn otutu soke si ọna ti o ku. Awọn agbegbe aiṣedeede tabi ti ko tọ si jẹ ọkan ninu awọn okunfa ti o wọpọ julọ ti jiji ati ṣiṣan dudu - tọsi ṣayẹwo lẹẹmeji lẹhin iyipada agba eyikeyi.

Laasigbotitusita ati wọ

Pupọ julọ awọn iṣoro agba conical n kede ara wọn bi iṣelọpọ riru, igbona pupọ tabi ọja ibajẹ. Lo tabili yii lati gbe yarayara lati aami aisan si o ṣeeṣe fa lati ṣatunṣe.

Aisan	O ṣeeṣe fa	Ṣe atunṣe
O wu jade / surging	Ifunni aiṣedeede, awọn ọkọ ofurufu ti o wọ, tabi fifo iwọn otutu	Ṣayẹwo kikọ sii, rii daju awọn iwọn agbegbe, wiwọn skru / imukuro agba
Gbigbona pupọ	Aiṣedeede onigbona, ijajajajajajajajajajajajajajajajajajajajajajajajajajajajajajajajajajajajabọnu,tabi itutu agbaiye ti dinamọ	Ṣayẹwo agbegbe kọọkan ati iyika itutu agbaiye; tun-mapu thermocouples
Plasticizing ko dara	Iṣeto dabaru ti ko tọ tabi agba agba ti o wọ	Ṣayẹwo iṣeto ni; ṣayẹwo fun fífẹ kiliaransi lati yiya
Black ila / ṣiṣan	Awọn aaye ti o ku ti o ni awọn ohun elo ti o bajẹ, tabi ti o gba wọle	Pa ati nu daradara; ayewo iho ati dabaru dada
Pupọ / iyara yiya	Filler abrasive, itọju ti ko dara, tabi lile-pato	Igbesoke si agba bimetallic / tungsten-carbide; mu itoju

Wọ jẹ deede - ibi-afẹde ni lati jẹ ki o lọra ati asọtẹlẹ. Awọn ohun elo abrasive (CaCO₃, okun igi, gilasi) kọlu bore ati awọn ọkọ ofurufu ni iyara, eyiti o jẹ deede idi ti o jinlẹ, Layer ti inu le san fun ararẹ. Ilẹ 62 HRC tungsten ti a ṣafikun nirọrun pẹ diẹ si awọn agbo ogun wọnyẹn ju ipari 58 HRC boṣewa kan, n na aarin aarin awọn atunko.

Atokọ itọju

Awọn sọwedowo kukuru, deede ṣe idiwọ awọn ikuna gbowolori. Kọ awọn wọnyi sinu iṣẹ ṣiṣe rẹ:

Àárín	Ṣayẹwo	Iṣe
Gbogbo ayipada	Awọn iwọn otutu agbegbe & amupu	Awọn kika iwe akọọlẹ; ṣe iwadii eyikeyi fiseete lati ipilẹṣẹ
Osẹ-ọsẹ	Didara yo & ipari dada	Wo awọn ṣiṣan tuntun, awọn gels tabi iyipada iṣelọpọ
Oṣooṣu	Purge & iworan bore / ṣayẹwo dabaru	Mọ awọn aaye ti o ku; wo fun igbelewọn tabi discoloration
Ni idamẹrin	dabaru / agba kiliaransi	Ṣe iwọn aafo naa; afiwe si spec si orin yiya oṣuwọn
Bi o ṣe nilo	Alagbona & thermocouple iyege	Rọpo awọn igbohunsafefe/sensọ ti o kuna ṣaaju ki wọn fa ọja buburu

Awọn ibeere ti a beere nigbagbogbo

Ohun ti o jẹ a conical ibeji dabaru agba?

O ti wa ni a tapered ibeji-bi extrusion paati ninu eyi ti meji conical skru yiyi inu kan ti o baamu agba conical. Awọn taper compresses ati plasticizes ohun elo lori kan kukuru ipari, ṣiṣe awọn conical dabaru agba apẹrẹ fun PVC paipu, profaili, dì ati WPC extrusion.

Awọn ohun elo wo ni o dara julọ lo fun?

PVC kosemi (pipa, profaili, ọkọ ati dì), onigi-ṣiṣu apapo, PE-orisun profaili ati ki o resini tile, plus PVC pelletizing. O mu awọn iyẹfun gbigbẹ ti o ni iwọn-kekere ti o ni idapọmọra paapaa daradara ọpẹ si gbigbemi-opin kikọ sii nla.

Bawo ni o ṣe yatọ si agba twin skru ti o jọra?

A conical agba tapers ati ki o kọ ga funmorawon pẹlu onírẹlẹ rirẹrun, suiting taara PVC/WPC extrusion. Ani afiwe ibeji dabaru agbantọju iwọn ila opin igbagbogbo ati irẹrun ti o ga julọ, eyiti o baamu idapọ, masterbatch ati awọn agbekalẹ kikun-giga pupọ.

Kini iyọọda aṣoju laarin skru ati agba?

Kiliaransi jẹ aafo kekere laarin itọpa ọkọ ofurufu ati ogiri bibi. O ti ṣeto ju ati deede lori apakan tuntun; bi o ti ṣi soke lati yiya, o wu ati titẹ ju. Wiwọn rẹ lorekore ni ọna ti o han julọ lati tọpa wiwọ agba.

Bawo ni mo se fi sori ẹrọ a conical ibeji dabaru agba?

Fi agbara si isalẹ ki o tiipa jade, nu awọn oju ibarasun, gbe soke ki o si mö ki awọn skru yipada larọwọto, waya agbegbe igbona kọọkan ati thermocouple ni deede, lẹhinna mu agba naa lọ si iwọn otutu laiyara ki o Rẹ ṣaaju ki o to bẹrẹ awọn skru.

Ohun ti o fa wọ ni conical ibeji skru awọn agba?

Ni akọkọ awọn ohun elo abrasive gẹgẹbi kaboneti kalisiomu, okun igi ati gilasi, ti o buru si nipasẹ ipata lati sisẹ PVC, itọju ti ko dara ati lile ti a pato. A jinle bimetallic tabi tungsten-carbide Layer koju gbogbo awọn mẹta jina dara.

Igba melo ni o yẹ ki a ṣe ayẹwo tabi rọpo agba naa?

Ṣe wiwo ati sọ awọn sọwedowo nu oṣooṣu ati wiwọn imukuro ni idamẹrin. Akoko rirọpo da lori fifuye kikun ati awọn wakati ṣiṣe - tọpa aṣa yiya dipo iduro fun ikuna, ki o tun ṣe tabi rọpo ni kete ti idasilẹ ba gbe alaye lẹkunrẹrẹ kọja.

Bawo ni MO ṣe yan iwọn to tọ fun laini extrusion mi?

Baramu ipin iwọn ila opin ati ipari si awoṣe extruder rẹ ati abajade ibi-afẹde, lẹhinna mu itọju dada kan ti o da lori bawo ni agbekalẹ rẹ ṣe jẹ abrasive. Firanṣẹ iyaworan tabi apẹẹrẹ pẹlu awọn iwọn bọtini ki agba naa jẹ ibamu deede, kii ṣe isunmọ.

Ṣe o nilo agba skru conical ti o baamu si ẹrọ rẹ?

Fi iyaworan ranṣẹ si wa - tabi apẹẹrẹ pẹlu awọn iwọn bọtini - ati pe awọn onimọ-ẹrọ wa yoo ṣe apejuwe skru twin conical ti o baamu deede ati agba pẹlu lile to tọ fun ohun elo rẹ. Pẹlu nitriding inu ile, bimetallic ati sisẹ tungsten-carbide, a kọ awọn ẹya ti o de 62 HRC ninu iho fun igbesi aye iṣẹ pipẹ.

Gba agbasọ kan laarin awọn wakati 12 →

Nanhaiya (Zhoushan) Ẹrọ Ṣiṣu · 500+ awọn onibara agbaye ·nikan, conical ibeji & ni afiwe ibejidabaru awọn agba