Kayamagalasi ozungulira or ulusi wamagalasi amfupi, magalasi apamwamba kwambiri a fiberglass or precio fibra de carbonoZowonjezeredwa ku matrix a thermoplastic, cholinga chake ndikuwongolera makina ndi mapangidwe a polima.Pali kusiyana kwakukulu pakati pa njira ziwiri zazikulu zolimbikitsira ma thermoplastics pakuumba jekeseni, kuchokera momwe amaphatikizidwira ndi matrix a polima, mpaka momwe angaperekere, ndipo mawonekedwe amtundu umodzi ukhoza kukhala wochuluka Wina ndi woyenera, koma shaper, kusiyana kwakukulu pakati pa ulusi waufupi ndi wautali ndi mlingo umene iwo amakonzedwa.
Kukonza ulusi wautali wolimbitsa thermoplastics
Cholinga chachikulu chokonzekera thermoplastics yolimbitsa ulusi wautali ndikusunga utali wa ulusi, womwe ndi wofunikira pakukulitsa mphamvu ndi kulimba.Kuthyoka kwa ulusi kumatha kuwononga zinthu zomwe zimapangidwa ndi polima ndipo pamapeto pake zimatha kunyalanyaza ubwino wogwiritsa ntchito ulusi wa magalasi.Kugwira molakwika ndi zida zolakwika ndi kapangidwe kazinthu, kapena kugwiritsa ntchito zida zosakonzedwa bwino kapena kuyika, kungayambitse kusweka kwa fiber.
Mosiyana ndi mapulasitiki opangidwa ndi CHIKWANGWANI chokhazikika, zida zolimbikitsira ulusi wautali nthawi zambiri zimapangidwa ndi pultrusion.Njirayi imaphatikizapo kutambasulagalasis kuyendayendakulowetsedwa ndi utomoni wa thermoplastic kudzera mu utomoni wapadera (kuti utomoni uzitha kukulunga ndikumanga ulusi), ndiyeno kudula zingwezo kukhala ma pellets, ulusi wa m'ma pellets ndi 12mm. , ndipo kutalika kumeneku ndi kofunikira kuti polima azitha kusamutsa bwino kupsinjika kwa ulusi wamphamvu.
Pamene ma pelletswa amagwiritsidwa ntchito popanga jekeseni, ulusi wautali umagwirizanitsidwa ndi kuvulala mwamphamvu kuti apange chigoba chamkati chomwe chimapereka mphamvu ndi kulimba.Poyerekeza ndi zinthu zazifupi zodzaza ulusi, zophatikizika zolimbikitsidwa ndi ulusi wautali, kayafiberglass ulusikapena ulusi wa kaboni, umapereka kuchuluka kwamphamvu kwa kulemera, kulimba kwamphamvu, moyo wautali wotopa, komanso kukana kutentha komanso kukhazikika kwabwinoko.
Zida zolimbazi zimapereka magwiridwe antchito ofanana ndi chitsulo, komabe ndizopepuka kuposa zitsulo, ndipo zimatha kutenga mwayi pakukonza bwino kwa jekeseni.1k nsalu ya carbon fiberNdiwofunika kwambiri m'malo mwachitsulo chifukwa ndi opepuka 70% kuposa chitsulo komanso opepuka kuposa chitsulo.Aluminiyamu ndi 40% yopepuka, kotero kuti zophatikizira zokhala ndi ulusi wautali zitha kugwiritsidwa ntchito popanga zida zamagalimoto, zamasewera, zakuthambo, zogula ndi zida zamafakitale.Ma resins oyambira amaphatikizapo polyamide (PA kapena nayiloni), polypropylene (PP), rigid thermoplastic polyurethane (ETPU), ndi utomoni wotentha kwambiri monga polyetheretherketone (PEEK), polyphthalamide (PPA), ndi polyamide.Ether imide (PEI) ndi zina. Ngakhale kuti thermoplastic iliyonse ikhoza kulimbikitsidwa ndi ulusi, ndi ena okha omwe amapereka ntchito zapamwamba chifukwa amalimbikitsidwa bwino.Zowonadi, ma semi-crystalline resins amalimbikitsidwa bwino ndi ulusi kuposa ma amorphous resins, zomwe zikutanthauza kuti kuuma kwawo ndi mphamvu zimawonjezeka kwambiri.
Zopangira Zopangira Zazida Zazitali Zazitali Zowonjezera
Poyerekeza ndi utomoni wosasinthidwa kapena granular wodzazidwa ndi ufa, kuumba utomoni wautali wolimbitsa ulusi kumakhala ndi zofunikira pa nkhungu, zipata, zida zomangira, ndi kapangidwe kagawo.Njira zomwe zimagwiritsidwa ntchito pokonza zinthuzi zimasiyananso ndi ma polima afupikitsa a fiber.
Monga tanenera kale, kusunga utali wa fiber ndiye chinsinsi cha kupambana.Zinthu zomwe zingayambitse kufupikitsa utali wa ulusi ndi monga kuthamanga kwambiri ndi kumeta ubweya kuchokera pa phula la jekeseni, monga momwe zingathere ngodya zakuthwa mu nkhungu ndi makina othamanga.Kuti musunge utali wa fiber, pali mfundo zitatu zofunika kuzidziwa:
1. Zinthu za nkhungu ndi mapangidwe
Ngakhale kuti ulusi wautali umavala pang'ono pa nkhungu kusiyana ndi ulusi waufupi chifukwa pali malekezero a singano ngati singano omwe amakhudza nkhungu, mtundu womwewo wa chitsulo cha nkhungu ndi choyenera kwa ma polima aatali komanso afupiafupi olimbikitsidwa, omwe amapezeka kwambiri. ndi P20 nkhungu zitsulo, amene angathe kupirira jekeseni oposa 100,000 mosalekeza.Ngati pakufunika kulimba kwambiri (kupitilira 100,000 jakisoni), chitsulo cha H13 chrome molybdenum kapena chitsulo chowumitsa mpweya cha A9 ndi zosankha zabwinoko.Nthawi zambiri, nkhungu zolimba ndiye chisankho chabwino kwambiri pokonza ma fiber-reinforced thermoplastics.Kwa nkhungu zowonongeka, zimatha kukonzedwanso pogwiritsa ntchito ukadaulo wa electroplating.Mitundu ya aluminiyamu imatha kugwiritsidwa ntchito ngati ma prototypes akuyenera kupangidwa kuti atsimikizire kapangidwe kake.
2. Kupanga zida
Ma thermoplastics opangidwa ndi ulusi wautali amatha kukonzedwa pogwiritsa ntchito zida zomangira jekeseni ndi zosintha zochepa zosakhalitsa kuti zisunge utali wa fiber ndikulola ma viscosity apamwamba.Kuponderezedwa kochepa kapena wononga cholinga chake chokhala ndi mphete yosabwerera yomwe imalola kuyenda kwaulere pamwamba kumalimbikitsidwa.Miphuno yanthawi zonse ingagwiritsidwe ntchito, koma milomo ya nayiloni iyenera kupewedwa chifukwa mawonekedwe ake a hourglass (opangidwa kuti ateteze kudontha) amalepheretsa kuyenda, kumapangitsa kukameta ubweya, komanso kumayambitsa kuyamwa kwa ulusi.Lingaliro lina lochepetsera kukameta ubweya ndikupewa mapangidwe opindika a nozzle.Nthawi zambiri, mabowo okulirapo (osachepera 5.6 mm) amathandizira kuti ma resins olimba a viscous apitirire.
Lamulo labwino pamakina aliwonse a jakisoni ndikubaya 60-70% yokha ya voliyumu.Kuwombera kwakukulu kumawonjezera nthawi yokonzanso, pomwe kukula kochepa kwambiri kumatanthauza kuti zinthuzo zimakhala mumgolo kwa nthawi yayitali, zomwe zingayambitse kuwonongeka.
3. Processing zinthu
Pankhani yokonzekera, ndikofunikira kuthana ndi zinthu ziwiri: warpage ndi creep.Nthawi zambiri, zida zazitali zolimba za thermoplastic zimakhala ndi zida zochepa kuposachingwe chachifupi cha fiberglassmbali chifukwa mapiringidzo a ulusi amachepetsa kusiyana shrinkage, koma jekeseni kuumbidwa mbali CHIKWANGWANI yaitali akadali opunduka, chifukwa chimodzi n'chakuti ulusi kuyenda motsatira Orientation mayikidwe, pamene utithandize mbali mphamvu, kungachititse kuti anisotropy.Pofuna kupewa kumenyana, malo ena a zipata kapena mapangidwe apangidwe angagwiritsidwe ntchito kuti apewe kuyanjanitsa kwa ulusi wambiri m'madera omwe safuna mphamvu zambiri kuti athe kupirira katundu womangidwa.
Sungani ubwino wa ulusi wautali
Kupanga bwino kwa utomoni wautali wolimbitsa ulusi kumafuna kusinthidwa kwa malangizo apangidwe ndi magawo owongolera omwe amagwirizana ndi utomoni wosakhazikika komanso ulusi wamfupi.Kuti mupindule kwambiri ndi zowonjezera ulusi wautali (omwe amawononga ndalama zambiri kuposa zida zosadzazidwa kapenafiberglass akanadulidwa zingwe kulimbitsachifukwa cha ntchito zawo zapamwamba), njira zabwino ziyenera kutsatiridwa panthawi yonseyi.Ngati ulusi wautali wathyoka kapena kusanjidwa molakwika chifukwa cha kusagwira bwino, kapangidwe kakufa kapena kuyika zida, mphamvu zawo zolimba komanso kulimba kwake zimachepa kapena kutayika.
#magalasi ozungulira#ulusi wamagalasi amfupi#1k nsalu ya carbon fiber#chingwe chachifupi cha fiberglass#fiberglass akanadulidwa zingwe kulimbitsa
Nthawi yotumiza: Oct-21-2022