Ama-thermoplastics aqiniswe ngefayibha ende (LFRT) asetshenziswa ezinhlelweni zokubumba umjovo ezinezakhiwo ezisezingeni eliphezulu.Nakuba ubuchwepheshe be-LFRT bunganikeza amandla amahle, ukuqina kanye nezakhiwo zomthelela, indlela yokucubungula le nto idlala indima ebalulekile ekunqumeni ukuthi yikuphi ukusebenza ingxenye yokugcina engayithola.
Ukuze uhlanganise ngempumelelo i-LFRT, kuyadingeka ukuqonda ezinye zezici zabo ezihlukile.Ukuqonda umehluko phakathi kwe-LFRT kanye ne-thermoplastics eqinisiwe evamile kukhuthaze ukuthuthukiswa kwemishini, ukuklama nokucubungula ubuchwepheshe ukuze kwandiswe inani namandla e-LFRT.
Umehluko phakathi kwe-LFRT nesinqamuleli esifushane sendabuko kanye nezinhlanganisela eziqinisiwe ze-glass fibre ubude be-fiber.Ku-LFRT, ubude be-fiber bufana nobude bama-pellets.Lokhu kungenxa yokuthi ama-LFRT amaningi akhiqizwa yi-pultrusion kunokuhlanganisa i-shear.
Ekwenziweni kwe-LFRT, ukudonsa okuqhubekayo kweingilazi fiberUkuzulazula okungasontekile kuqala kudonswa ku-diye ukuze kuhlanganiswe futhi kufakwe inhlaka.Ngemva kokuphuma efasiteleni, lo mucu wepulasitiki oqinisiwe oqhubekayo uyanqunywa noma ufakwe i-pelleted, ngokuvamile Sika ubude obuyi-10~12mm.Ngokuphambene, izinhlanganisela zefiber yengilazi emfushane yendabuko iqukethe kuphela imicu eqoshiwe enobude obungu-3 kuya ku-4 mm, futhi ubude bayo buzobuye buncishiswe bube ngaphansi kuka-2 mm ku-shear extruder.
Ubude be-fiber kuma-pellets e-LFRT busiza ukuthuthukisa izakhiwo zemishini ye-LFRT-impact ukumelana noma ukwanda kokuqina ngenkathi kugcinwa ukuqina.Uma nje imicu igcina ubude bayo phakathi nenqubo yokubumba, izokwakha “uhlaka lwamathambo lwangaphakathi” olunikeza izici zemishini eziphakeme kakhulu.Kodwa-ke, inqubo yokubumba engeyinhle ingashintsha imikhiqizo enefayibha ende ibe izinto ezimfishane.Uma ubude be-fiber buphazamiseka phakathi nenqubo yokubumba, akunakwenzeka ukufeza izinga elidingekayo lokusebenza.
Ukuze kugcinwe ubude be-fiber ngesikhathi sokubunjwa kwe-LFRT, izici ezintathu ezibalulekile zidinga ukucatshangelwa: umshini wokubumba umjovo, ukwakheka kwengxenye kanye nesikhunta, kanye nezimo zokucubungula.
1. Izinyathelo zokuphepha
Umbuzo owodwa ovame ukubuzwa mayelana nokucutshungulwa kwe-LFRT uthi: Kungenzeka yini ngathi ukuthi sisebenzise izinto ezikhona zokubumba umjovo ukubumba lezi zinto.Ezimweni eziningi, okokusebenza okusetshenziselwa ukwenza izinhlanganisela zefiber emifushane kungabuye kusetshenziselwe ukwakha i-LFRT.Nakuba okokusebenza okujwayelekile okubumba i-fiber emfushane kuyanelisa ezingxenyeni eziningi ze-LFRT nemikhiqizo, okunye ukuguqulwa kwezinto zokusebenza kungasiza kangcono ukugcina ubude befayibha.
Isikulufu senhloso evamile esinesigaba esijwayelekile esithi "feed-compression-metering" sifaneleka kakhulu kule nqubo, futhi ukugunda okubhubhisayo kwefiber kungancishiswa ngokunciphisa isilinganiso sokucindezela kwesigaba semitha.Isilinganiso sokuminyanisa sesigaba semitha cishe esingu-2:1 sihamba phambili emikhiqizweni ye-LFRT.Akudingekile ukusebenzisa ama-alloys ensimbi akhethekile ukwenza izikulufu, imiphongolo nezinye izingxenye, ngoba ukugqokwa kwe-LFRT akukukhulu njengalokho kwendabuko ye-glass fiber eqoshiwe eqiniswe i-thermoplastics.
Olunye ucezu lwesisetshenziswa esingazuza ekubuyekezweni komklamo ithiphu le-nozzle.Ezinye izinto ze-thermoplastic kulula ukuzicubungula ngethiphu yenozzle ecijile ehlehlayo, engakha izinga eliphezulu lokugunda lapho impahla ijovwa emgodini wokukhunta.Kodwa-ke, leli thiphu le-nozzle linganciphisa kakhulu ubude befayibha yento ehlanganisiwe yefiber ende.Ngakho-ke, kunconywa ukusebenzisa i-grooved nozzle tip/valve assembly nge-design ye-100% "yokugeleza kwamahhala", okwenza kube lula ukuthi imicu emide idlule ku-nozzle futhi ingene engxenyeni.
Ngaphezu kwalokho, ububanzi bomgodi we-nozzle kanye nesango kufanele kube nosayizi oxekethile ongu-5.5m
m (0.250in) noma ngaphezulu, futhi akufanele kube khona imiphetho ecijile.Kubalulekile ukuqonda ukuthi impahla igeleza kanjani emshinini wokubumba umjovo futhi unqume lapho ukugunda kuzophula khona imicu.
I-Hebei Yuniu Fiberglass Manufacturing Company Limitedkuyintoumkhiqizi wezinto ezibonakalayo ze-fiberglass onolwazi olungaphezu kweminyaka eyi-10, isipiliyoni sokuthekelisa seminyaka engu-7.
Singabakhiqizi bezinto zokusetshenziswa ze-fiberglass, njenge i-fiberglass roving, intambo ye-fiberglass, i-fiberglass eqoshiwe ye-strand mat, izintambo eziqoshiwe ze-fiberglass, i-fiberglass black mat, i-fiberglass woven roving, indwangu ye-fiberglass, indwangu ye-fiberglass..Njalo njalo.
Uma kukhona izidingo, sicela usithinte ngokukhululekile.
Sizokwenza konke okusemandleni ethu ukukusiza futhi sikusekele.
Isikhathi sokuthumela: Oct-09-2021