3d braided composites ana samun su ta hanyar saƙa busassun busassun sassa ta amfani da fasahar yadi.Ana amfani da busassun sassan da aka riga aka tsara azaman ƙarfafawa, kuma ana amfani da tsarin canja wuri na guduro (RTM) ko tsarin infiltration na resin membrane (RFI) don yin ciki da warkewa, kai tsaye yana samar da tsarin haɗin gwiwa.A matsayinsa na ci-gaba mai hadewa, ya zama wani muhimmin abu na tsari a fagen zirga-zirgar jiragen sama da na sararin samaniya, kuma an yi amfani da shi sosai a fannonin motoci, jiragen ruwa, gine-gine, kayayyakin wasanni da na'urorin likitanci.Ka'idar gargajiya ta laminates masu haɗaka ba za su iya saduwa da ƙididdigar kayan aikin injiniya ba, don haka masana a gida da waje sun kafa sababbin ka'idoji da hanyoyin bincike.
Haɗaɗɗen nau'i mai nau'i uku na ɗaya daga cikin abubuwan da aka kwaikwayi waɗanda aka ƙera, wanda aka ƙarfafu da masana'anta na fiber ɗin (wanda aka sani da sassan da aka riga aka tsara masu girma uku) waɗanda aka saƙa ta hanyar fasaha.Yana da ƙarfin ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun haƙƙoƙin lalacewa, ƙarancin karyewa, juriya mai tasiri, juriya da gajiya da sauran kyawawan halaye.
Ci gaban kayan haɗin takalmin kwalliya guda uku shine saboda ƙarancin tsararren ƙarfin ƙa'idar kayan da aka yi daga kayan haɓaka ko kayan haɓaka ƙawance, waɗanda ba za a yi amfani da su azaman ɓangarorin ba da izini ba.LR Sanders ya gabatar da fasaha mai girma guda uku cikin aikace-aikacen injiniya a 977. Tsarin cikakken tsari na jini wanda aka samo shi ta hanyar takamaiman ƙa'idodi da ta ceci tare da juna, wanda ke kawar da matsalar interlayer kuma yana inganta haɓaka juriya na kayan haɗin gwiwa.Yana iya samar da kowane nau'i na siffa ta yau da kullun da tataccen jiki mai siffa ta musamman, kuma ya sanya tsarin ya kasance yana da ayyuka da yawa, wato, saƙa multilayer integral memba.A halin yanzu, akwai sama da hanyoyi 20 na saƙa mai girma uku, amma akwai guda huɗu da ake amfani da su, wato saƙan polar.
braiding), saƙar diagonal (diagonal braiding ko packing
ƙwanƙwasa), saƙan zaren orthogonal (ƙwaƙwalwar ƙirƙira), da ƙwanƙwasa warp interlock.Akwai nau'i-nau'i iri-iri na ƙwanƙwasa GUDA UKU, kamar ƙwanƙwasa mataki biyu mai girma uku, ƙwanƙwasa mataki huɗu mai girma uku da ƙwanƙwasa matakai masu yawa.
Halayen tsarin RTM
Muhimmin jagorar ci gaba na tsarin RTM shine gyare-gyaren manyan abubuwa.VARTM, LIGHT-RTM da SCRIMP su ne matakan wakilci.Bincike da aikace-aikacen dabarun RTM sun ƙunshi fannoni da fasaha da yawa, wanda yana ɗaya daga cikin fagagen bincike mafi fa'ida a cikin abubuwan haɗin gwiwa a duniya.Bukatun bincikensa sun haɗa da: shirye-shiryen, ilimin kimiyyar sinadarai da kaddarorin rheological na tsarin guduro tare da ƙarancin danko da babban aiki;Shirye-shiryen da halayen halayen halayen fiber preform;Fasahar simintin kwamfuta na aiwatar da gyare-gyare;Fasahar saka idanu akan layi na aiwatar da tsari;Fasahar ƙirar ƙirar ƙira;Haɓaka sabon na'ura tare da wakili na musamman In vivo;Dabarun nazarin farashi, da sauransu.
Tare da kyakkyawan tsarin aiwatar da shi, RTM ana amfani dashi sosai a cikin jiragen ruwa, wuraren soja, injiniyan tsaro na ƙasa, sufuri, sararin samaniya da masana'antar farar hula.Babban halayensa sune kamar haka:
(1) Ƙarfi mai ƙarfi a cikin masana'antar ƙira da zaɓin kayan, bisa ga ma'aunin samarwa daban-daban,
Canjin kayan aiki kuma yana da sauƙi sosai, fitowar samfuran tsakanin 1000 ~ 20000 guda / shekara.
(2) Yana iya kera hadaddun sassa tare da ingancin saman ƙasa mai kyau da daidaiton girman girma, kuma yana da fa'idodi da yawa a cikin kera manyan sassa.
(3) Sauƙi don gane ƙarfafawar gida da tsarin sanwici;Daidaita sassauƙa na azuzuwan kayan ƙarfafawa
Nau'i da tsarin da aka ƙera don saduwa da buƙatun aiki daban-daban daga farar hula zuwa masana'antar sararin samaniya.
(4) Fiber abun ciki har zuwa 60%.
(5) Tsarin gyare-gyaren RTM yana cikin tsarin aiki na rufaffiyar, tare da tsabtataccen yanayin aiki da ƙarancin iska mai iska yayin aiwatar da gyare-gyare.
(6) Tsarin gyare-gyaren RTM yana da tsauraran buƙatu akan tsarin albarkatun ƙasa, wanda ke buƙatar kayan haɓaka don samun juriya mai kyau ga zubar da ruwa da kutse.Yana buƙatar guduro don samun ƙananan danko, babban reactivity, matsakaicin zafin jiki na warkewa, ƙarancin ƙarancin ƙima na curing, ƙaramin danko a cikin tsarin leaching, kuma yana iya yin gel da sauri bayan allura.
(7) Low matsa lamba allura, janar allura matsa lamba <30psi (1PSI = 68.95Pa), na iya amfani da FRP mold (ciki har da epoxy mold, FRP surface electroforming nickel mold, da dai sauransu), babban mataki na 'yancin na mold zane, mold kudin ne low. .
(8) The porosity na kayayyakin ne low.Idan aka kwatanta da tsarin gyaran gyare-gyare na prepreg, tsarin RTM yana buƙatar ba shiri, sufuri, ajiya da daskarewa na prepreg, babu rikitarwa manual layering da vacuum jakar latsa tsari, kuma babu zafi magani lokaci, don haka aiki ne mai sauki.
Duk da haka, tsarin RTM na iya tasiri sosai ga kaddarorin samfurin ƙarshe saboda guduro da fiber za a iya siffa su ta hanyar impregnation a cikin gyare-gyaren gyare-gyaren, kuma fiber yana gudana a cikin rami, tsarin impregnation da tsarin warkewa na guduro na iya tasiri sosai. kaddarorin samfurin ƙarshe, don haka ƙara rikitarwa da rashin kulawa na tsari.
Lokacin aikawa: Dec-31-2021