I-Extrusion eqondile ingenye yezindlela ezikhulayo zeubuchwepheshe be-extrusion.Ngokwesisekelo sokuhlaziya isici se-co rotating twin screw extrusion yenqubo yokuhlanganisa, amanye amaphuzu abalulekile mayelana nezisetshenziswa, indlela, kanye nesikhunta se-extrusion esiqondile esine-co rotating twin screw extruder akhona.
I-Twin-screw extruder iyinqubo eqhubekayo esetshenziswa kabanzi ye-polymer.Kungakhathaliseki ukuthi ingakwazi ukukhishwa ngokuqondile, okungukuthi, noma ingaqedwa ngesikhathi esisodwa, ingahlukaniswa ngezigaba ezimbili: ukujikeleza okuhlangene kanye nokujikeleza kwe-hetero-directional.I-coaxial twin screw ibe yingxube kanye ne-molding extrusion.Yiba nekhono eliqinile lokuxuba, ikakhulukazi elisetshenziselwa ukuguqulwa, ukugcwaliswa, i-1 yokuthuthukisa ngokuqondile kanye nezimo ze-plastic extrusion futhi ixubene nokukhiqizwa kokwenziwa kokusebenza kokuxuba ama-screw alloys, uhlelo lwe-extrusion lusebenzisa kakhulu isimo se-modular esiqondile se-extrusion singaphakathi kwesakhiwo. yesakhiwo sokuxuba ngokugcwele, ngokuhlukahluka kwe-syfuels fiasco tube component, inhlanganisela ye-screw element ukwanelisa i-extruder ingakha ingcindezi eyanele kanye nokuzinza kokugeleza.Ngokwenqubo ethile yokuxuba yokudlulisa, ukuncibilika, ukuxuba, ukwehla, i-homogenizing nokunye, isimo se-co-directional twin-screw extruder esetshenziselwa ukuxuba sihlaziywa kuqala.
I-1.Non - twin eqondisayo - isikulufu singasungula ukucindezela okuphezulu nokugeleza okuzinzile
Isivinini sokuzungezisa kanye nomthelela wokuhlakazwa, ikakhulukazi esetshenziselwa imikhiqizo edinga ukubunjwa kosayizi wesigaba okunembile kanye ne-extrusion, njenge-cone-direction twin-screw screw ephakeme isivinini esihlobene ingakhiqiza i-extruder ye-twin-screw extruder yokubumba iphrofayela ye-PVC kanye ne-extrusion.Uma kuqhathaniswa nesilinganiso sokugunda kanye nengcindezi enkulu yokugunda, lapho isivinini sokuphenduka siphezulu, umphumela uba ngcono.I-extruder ye-screw eyodwa ingakwazi ukuzivumelanisa nendawo ebanzi, kodwa izici zayo ezihlukahlukene azilungile njengomphumela wokuxutshwa kwe-dispersive.ngesikhathi esifanayo, ijubane eliphezulu lokuzungezisa lenze buthaka ukufuduka okuhle kwesikulufu esingamawele kwagqama kakhulu, isikulufu esisodwa sisetshenziswa kakhulu ekubumbeni i-extrusion, indima evamile yesikulufu, ukuze ukuzinza kwe-extrusion.
Umklamo okhethekile ngokuya ngenqubo ethile ye-extrusion kanye nomkhiqizo.
2.Isimiso se-screw element design
Lapho kusetshenziswa imikhiqizo ekhethekile yokukhiqiza idinga ukuxuba imbudumbudu kanye nokuxubana kwe-extrusion ngendlela efanayo yesici sesikulufu sesikulufu esingamawele ikakhulukazi ngokuya ngokuthi "kusuka kuhlanzekile" izinyathelo ezimbili zangempela, futhi ikakhulukazi ngendlela efanayo yesikulufu esingamawele. kanye nesikulufu esisodwa ukuze kuqedelwe umklamo, lesi simiso sinquma ukuthi iphasishi longitudinal kufanele livuleke, ukuze okubili kukulufiwe.Ngemva kwe-granulation yenhlanganisela yesikulufu esiphindwe kabili, okubalulekile kupholiswa ekamelweni lokushisa, futhi ukushintshaniswa kwezinto kwenzeka phakathi kwezigxobo zesikulufa esisodwa, njengoba kuboniswe kumfanekiso 1 (a).Lapho isiteshi sokugeleza kwe-longitudinal sivuliwe, izinga lokushisa liyakhuphuka futhi kuze kuncibilike okokusebenza.Ngemuva kokucutshungulwa okubili, kuyenzeka uvule isiteshi sokugeleza esinqamulayo ukubona ukwanda kokusetshenziswa kwezikulufu eziseduze zesikulufu esifanayo, ukwanda kwezindleko zokucubungula, ukwelulwa komjikelezo wokukhiqiza kanye nokushintshisana kwezinto.Ngenxa yalokho, umlando wokushisa wokuxuba osabalalisiwe uyakhula futhi ukusebenza kuyehla.ngokwemvelo kuholela enkingeni: ikhono, kodwa futhi kwenza buthaka umphumela omuhle wokufuduka.
Isikhathi sokuthumela: Jul-18-2019