Izvi zvinotevera misimboti yakakosha yekuchengeta mupfungwa nezve extrusion.Vanofanira kubatsira kuchengetedza mari, kuburitsa zvigadzirwa zvemhando yepamusoro, uye kushandisa michina nemazvo.
4. Chikafu chinoshanda sechinotonhorera.Extrusion kufambiswa kwesimba kubva kumota — uye dzimwe nguva maheater — kuenda kupurasitiki inotonhorera, nokudaro kuishandura kubva kune yakasimba kuenda kunyungudika.Chikafu chekupinda chinotonhorera kupfuura dhiramu uye screw nzvimbo munzvimbo yekudya.Iyo dhiramu pamusoro peiyo feedzone, zvisinei, inenge inogara iri pamusoro pekunyunguduka kwepurasitiki.Inotonhodzwa nekusangana nezvikamu zvinopinda, asi inochengetwa ichipisa nekufambisa kwekupisa kumashure kubva kumucheto unopisa wepamberi, pamwe chete nekudzora kupisa kwebhomba.Kunyangwe kana kumucheto kwepamberi kuchinge kuchipisa nekukwesha kwe viscous uye pasina kupisa kwembiya kunodiwa, maheater ekumashure angangoda kuve akabatidzwa.Iyo inonyanya kukosha kunze ndeye grooved -feed barrel, inoshandiswa ingangoita HDPE.
Iyo screw root surface inotonhodzwawo nechikafu uye inodzivirirwa kubva kumadziro ebhari nemapurasitiki ekudya zvidimbu (uye mweya uri pakati pawo).Kana iyo screw ikangoerekana yamira, chikafu chinomirawo, uye screw surface inowedzera kupisa munzvimbo yekudyisa sezvo kupisa kunofamba ichidzokera kumashure kubva kumberi kunopisa.Izvi zvinogona kukonzera kunamatira kwezvikamu kumudzi, kana bhiriji.
5. Namatira kudhiramu uye tsvedza pane screw, mune feedzone.Kune yakanyanya kuomarara inofambiswa munzvimbo yekudyisa yeyakatsetseka -barrel, single-screw extruder, zvimedu zvinofanirwa kunamatira kubhodhoro uye kutsvedza pascrew.Kana zvimedu zvakanamatira pascrew root hapana chekuzvibvisa;vhoriyamu yechiteshi uye kudyiwa kwezvakaoma zvinobva zvaderedzwa.Kunamatira kumudzi zvakare hakudiwe nekuti purasitiki inogona kubika ipapo uye kuburitsa gels uye zvakafanana zvinosvibisa zvimedu, kana kunamatira uye kutyora zvinyoronyoro nekuchinjira kunoenderana muyero yekubuda.
Mapurasitiki mazhinji anotsvedza pamudzi nekuti anouya achitonhorera uye mudzi wacho haudziisirwe zvakanyanya nekukwesha semadziro edhiramu.Zvimwe zvinhu zvinonamira kupfuura zvimwe: PVC ine plasticized zvakanyanya, amorphous PET, uye mamwe ma polyolefin copolymers ane adhesive properties anowanzo kudiwa mukupedzisira mashandisiro awo.
Kana iri dhiramu, purasitiki inoda kunamatira ipapo kuti ikwanise kukweshwa uye kusundirwa mberi nendege dze screw.Panofanira kunge paine yakakwira coefficient yekukweshana pakati pezvimedu uye mbiya, iyo inozobva yakanganiswa zvakanyanya nekumashure kwebhari tembiricha.Kana zvimedu zvisina kunamira zvaingokunguruka zvorega kuenda kumberi—ndosaka chikafu chinotsvedza chisina kunaka.
Surface friction handicho chega chinhu chinokanganisa infeed.Zvimedu zvakawanda hazvimbobata dhiramu kana screw root, saka panofanirwa kuve nekukweshana uye mechanic uye inonamira inopindirana mukati mepellet mass.
Grooved barrels inyaya yakakosha.Iyo grooves iri mu feedzone, iyo inoparadzaniswa nemhepo kubva kune yakasara yedhiramu uye yakanyanyisa mvura -inotonhorera.Ndege dzinosundidzira mapellet pasi pemikoto nekudaro dzinoita kudzvanywa kwakanyanya munhambwe ipfupi zvinoshamisa.Uku kuruma kwakawedzera kunobvumira kudzika screw rpm kune imwechete kubuda, nekudaro kupisa kushoma kunogadzirwa kumucheto kumberi, kuchipa yakaderera kunyungudika tembiricha.Izvi zvinogona kureva kukurumidza kugadzirwa mukutonhodza-yakafuridzwa mitsara yemafirimu.Grooves inonyanya kukodzera HDPE, iyo inotsvedza pane ese mapurasitiki akajairika kunze kwefluoroplastics.
6. Material ndiyo inodhura zvakanyanya.Mune zvimwe zviitiko mari yezvinhu inomiririra yakawanda se80 muzana yemutengo wose wekugadzira - kupfuura zvimwe zvinhu zvose zvakabatanidzwa - kunze kwezvigadzirwa zvishomanana zvakadai semakatheta ezvokurapa uko kuvimbiswa kwehutano uye kurongedza zvakakosha zvisingawanzoitiki.Iyi musimboti inotungamira kune dzimwe mhedziso mbiri: Mapurosesa anofanirwa kushandisa zvakare kucheka kwakawanda uye zvimedu sezvinobvira nenzira dzinotsiva zvinhu zvemhandara, uye kuchengetedza kushivirira kwehukobvu hwepedyo sechinhu chipi nechipi chinopfuura kukora kwechinangwa chinoraswa uye chero chinhu chishoma chinokanganisa kutadza kwechigadzirwa.
Nguva yekutumira: May-17-2017