A conical twin screw extruderke mofuta oa mafahla screw extruder e nang le li-screw tse peli tse hlophisitsoeng ka sebopeho sa conical, tse tapering ho ea qetellong ea extruder. Moqapi ona o fana ka phokotso ea butle-butle ea molumo oa "screw channel", e leng se bakang khatello e eketsehileng le ho ntlafatsa ho kopanya. Conical twin screw extruder haholo-holo e entsoe ka sekoti sa barrel, sistimi ea phetisetso ea lisebelisoa, phepelo e ngata, mosi oa vacuum, futhumatsang, pholiso le likarolo tsa taolo ea motlakase.
Conical twin screw extruder e loketse ho hlahisa lihlahisoa tsa PVC ho tloha phofo e tsoakiloeng. PVC ke polymer ea thermoplastic e nang le lits'ebetso tse fapaneng liindastering tse fapaneng, joalo ka kaho, ho paka, motlakase, likoloi le bongaka. Leha ho le joalo, PVC ha e tsamaellane le li-polymer tse ling tse ngata le li-additives, 'me e hloka mekhoa e khethehileng ea ho sebetsa ho fihlela thepa le ts'ebetso e lakatsehang. Conical twin screw extruder e ka fana ka motsoako o hlokahalang, ho qhibiliha, devolatilization, le homogenization ea PVC le li-additives tsa eona ka mokhoa o tsoelang pele le o sebetsang hantle.
A conical twin screw extruder e boetse ke lisebelisoa tse khethehileng bakeng sa extrusion ea phofo ea WPC. WPC e emetse composite ea lehong-plastiki, e leng thepa e kopanyang likhoele tsa lehong kapa phofo ea patsi le li-polymer tsa thermoplastic, tse kang PVC, PE, PP, kapa PLA. WPC e na le melemo ea lehong le polasetiki, joalo ka matla a phahameng, ho tšoarella, ho hanyetsa boemo ba leholimo, le ho sebelisoa hape. Conical twin screw extruder e ka sebetsana le phofo ea WPC e nang le tlhahiso e phahameng, ts'ebetso e tsitsitseng, le bophelo bo bolelele ba ts'ebeletso.
Ka lisebelisoa tse fapaneng tsa hlobo le tse tlase, "conical twin screw extruder" e ka hlahisa lihlahisoa tse fapaneng tsa PVC le WPC, joalo ka liphaephe, siling, profiles ea lifensetere, lakane, decking le granules. Lihlahisoa tsena li na le libopeho tse fapaneng, boholo le mesebetsi, 'me li ka khotsofatsa litlhoko tse fapaneng tsa bareki le limmaraka.
Tlhaloso ea Ts'ebetso
Ts'ebetso ea conical twin screw extrusion e ka aroloa ka mekhahlelo e mene e meholo: ho fepa, ho qhibiliha, devolatilization le sebopeho.
Ho fepa
Mokhahlelo oa pele oa conical twin screw extrusion ke ho fepa. Mothating ona, lisebelisoa tse tala, joalo ka phofo ea PVC kapa WPC, le li-additives tse ling, joalo ka li-stabilizer, lubricant, li-filler, li-pigments le li-modifiers, li lekantsoe 'me li kenngoa ka har'a extruder ka lisebelisoa tse fapaneng tsa ho fepa, joalo ka li-screw augers, vibratory. literei, mabanta a boima, le lipompo tsa ente. Sekhahla sa phepelo le ho nepahala ke lintlha tsa bohlokoa tse amang boleng le botsitso ba lihlahisoa tsa ho qetela. Lisebelisoa tse tala li ka kopanngoa pele le ho feptjoa, kapa ka ho arohana le ka tatellano ea metered ka har'a extruder, ho itšetlehile ka sebopeho le thepa e lakatsehang ea lihlahisoa.
Ho qhibiliha
Mokhahlelo oa bobeli oa conical twin screw extrusion ke ho qhibiliha. Mothating ona, lisebelisoa tse tala lia fetisoa, li hatelloa, 'me li futhumatsoa ke li-screw tse pota-pota le li-heaters tsa barrel, ebe li fetoloa ho tloha ho tiileng ho ea ho boemo ba metsi. Ts'ebetso ea ho qhibiliha e kenyelletsa matla a ho futhumatsa le a mochini, 'me e susumetsoa ke lebelo la sekoti, sebopeho sa screw, mocheso oa barrel le thepa ea thepa. Ts'ebetso ea ho qhibiliha e boetse e bohlokoa bakeng sa ho hasana le ho ajoa ha li-additives ka har'a matrix a polymer, le ho qala ha lik'hemik'hale tsa lik'hemik'hale, tse kang cross-linking, grafting, kapa degradation, tse ka 'nang tsa etsahala ha ho qhibiliha. Ts'ebetso ea ho qhibiliha e tlameha ho laoloa ka hloko ho qoba ho chesa ho feteletseng, ho kuta ho feta tekano, kapa ho qhibiliha ha thepa ka tlaase ho moo, ho ka bakang boleng le ts'ebetso e fokolang ea sehlahisoa.
Devolatilization
Mokhahlelo oa boraro oa conical twin screw extrusion ke devolatilization. Mothating ona, likarolo tse sa fetoheng, joalo ka mongobo, moea, li-monomers, li-solvents le lihlahisoa tsa ho bola, li tlosoa ho qhibiliha ka ho sebelisa vacuum likoung tsa maqhubu haufi le moqomo oa extruder. Ts'ebetso ea devolatilization e bohlokoa bakeng sa ho ntlafatsa boleng ba sehlahisoa le botsitso, hammoho le ho fokotsa tšusumetso ea tikoloho le likotsi tsa bophelo bo botle ba ts'ebetso ea extrusion. Ts'ebetso ea devolatilization e ipapisitse le moralo oa screw, boemo ba vacuum, viscosity e qhibilihisitsoeng, le litšobotsi tsa thepa. Ts'ebetso ea devolatilization e tlameha ho ntlafatsoa ho fihlela ho tlosoa ho lekaneng ha lintho tse feto-fetohang ntle le ho baka ho phophoma ho feteletseng, likhohola kapa ho qhibiliha ha metsi.
Ho bopa
Mokhahlelo oa bone le oa ho qetela oa conical twin screw extrusion ke ho bopa. Mothating ona, ho qhibiliha ho fetisoa ka lefu kapa hlobo e khethollang sebopeho le boholo ba sehlahisoa. The die kapa hlobo e ka etsoa ho hlahisa lihlahisoa tse fapaneng, tse kang liphaephe, profiles, sheet, filimi kapa granules. Mokhoa oa ho bopa o susumetsoa ke die geometry, khatello ea lefu, mocheso oa lefu, le rheology ea ho qhibiliha. Mokhoa oa ho bōpa o tlameha ho fetoloa ho finyella li-extrudates tse tšoanang le tse boreleli ntle le mefokolo, joalo ka lefu la ho ruruha, ho qhibiliha ho qhibiliha, kapa ho se tsitse ha dimensional. Ka mor'a mokhoa oa ho etsa sebōpeho, li-extrudate lia pholile, li khaoloa, 'me li bokelloa ke lisebelisoa tse ka tlaase ho noka, tse kang li-calibrator, li hula, li-cutters le li-winders.
Qetello
Conical twin screw extruder ke sesebelisoa se feto-fetohang le se sebetsang hantle sa ho hlahisa lihlahisoa tsa PVC le WPC ho tsoa phofo e tsoakiloeng. E ka fana ka mesebetsi e hlokahalang ea ho fepa, ho qhibiliha, ho senya, le ho bōpa ka mokhoa o tsoelang pele le o laoloang. E ka boela ea hlahisa lihlahisoa tse fapaneng tse nang le libopeho tse fapaneng, boholo, le mesebetsi, ka ho sebelisa hlobo e fapaneng le thepa e tlaase. Conical twin screw extruder e na le melemo ea ho kopanya hantle, tlhahiso e kholo, ts'ebetso e tsitsitseng, le bophelo bo bolelele ba ts'ebeletso, mme e ka fihlela litlhoko tse fapaneng tsa bareki le limmaraka.
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Nako ea poso: Jan-24-2024