Igikoresho cyo kwimura resin (RTM) ni uburyo busanzwe bwo kubumba amazi ya fibre-yongerewe imbaraga ya resin ishingiye kubikoresho, birimo ahanini:
(1) Gushushanya fibre ikora ukurikije imiterere nibikorwa bya mashini bisabwa mubice bikenewe;
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Umuvuduko wo kwimura resin nicyo kintu nyamukuru kigomba kugenzurwa mubikorwa bya RTM.Uyu muvuduko ukoreshwa mugutsinda imbogamizi zahuye nazo mugihe cyo gutera inshinge zumubyimba no kwibiza mubintu byubaka.Igihe cya resin yo kurangiza kwanduza kijyanye nigitutu cya sisitemu nubushyuhe, kandi igihe gito gishobora kuzamura umusaruro.Ariko niba umuvuduko wa resin uri hejuru cyane, ibifatika ntibishobora kwinjira mubikoresho byubaka mugihe, kandi impanuka zishobora kubaho kubera kwiyongera k'umuvuduko wa sisitemu.Kubwibyo, muri rusange birasabwa ko urwego rwamazi ya resin yinjira muburyo mugihe cyo kwimura ntagomba kuzamuka vuba kurenza 25mm / min.Kurikirana uburyo bwo kohereza resin ukurikirana icyambu gisohoka.Mubisanzwe byafashwe ko uburyo bwo kwimura bwarangiye mugihe ibyambu byose byo kwitegereza ku ifu byuzuyemo kole kandi ntibikarekura ibibyimba byinshi, kandi umubare nyawo wa resin wongeyeho ni nkinshi mubiteganijwe byongeweho.Kubwibyo, igenamigambi ry’ibicuruzwa bigomba gusuzumwa neza.
Guhitamo
Guhitamo resin sisitemu nurufunguzo rwibikorwa bya RTM.Ubukonje bwiza ni 0.025-0.03Pa • s iyo resin irekuwe mumyanya yububiko hanyuma ikinjira vuba muri fibre.Polyester resin ifite ubukonje buke kandi irashobora kurangizwa no guterwa ubukonje mubushyuhe bwicyumba.Ariko, bitewe nibikorwa bitandukanye bisabwa mubicuruzwa, hazatoranywa ubwoko butandukanye bwibisigarira, kandi ububobere bwabo ntibuzaba bumwe.Kubwibyo, ingano yumuyoboro nu mutwe watewe inshinge bigomba kuba byujuje ibisabwa kugirango ibintu bishoboke.Ibisigarira bikwiranye na RTM harimo polyester resin, epoxy resin, fenolike resin, polyimide resin, nibindi.
Guhitamo ibikoresho byubaka
Mubikorwa bya RTM, ibikoresho byubaka birashobora gutoranywa nka fibre yikirahure, fibre ya grafite, fibre karubone, karbide ya silicon, na fibre aramid.Ubwoko burashobora gutoranywa ukurikije ibikenewe gushushanya, harimo fibre ngufi yaciwe, imyenda iterekanijwe, imyenda myinshi ya axis, kuboha, kuboha, ibikoresho byingenzi, cyangwa preforms.
Urebye imikorere y'ibicuruzwa, ibice byakozwe niyi nzira bifite igice kinini cya fibre kandi birashobora gushushanywa hamwe no gushimangira fibre ukurikije imiterere yihariye yibice, bifite akamaro mukuzamura imikorere yibicuruzwa.Urebye ibiciro byumusaruro, 70% yikiguzi cyibigize ibintu biva mubiciro byo gukora.Kubwibyo, uburyo bwo kugabanya ibiciro byinganda nikibazo cyingenzi kigomba gukemurwa byihutirwa mugutezimbere ibikoresho.Ugereranije nubuhanga gakondo bushyushye bwokoresha ibikoresho byo gukora resin bishingiye kubikoresho, inzira ya RTM ntabwo isaba imibiri ihenze, kugabanya cyane ibiciro byinganda.Byongeye kandi, ibice byakozwe nuburyo bwa RTM ntibigarukira kubunini bwa tank, kandi ingano yubunini bwibice iroroshye guhinduka, ishobora gukora ibice binini kandi binini cyane.Muri rusange, inzira ya RTM yakoreshejwe cyane kandi itezwa imbere byihuse mubijyanye no gukora ibikoresho, kandi byanze bikunze bizaba inzira yiganje mubikorwa byo gukora ibikoresho.
Mu myaka yashize, ibicuruzwa biva mu nganda zikora ingendo zo mu kirere byahindutse buhoro buhoro biva mu bikoresho bitwara imizigo n'ibice bito bijya mu bikoresho bitwara imizigo hamwe n’ibice binini byahujwe.Hano harakenewe byihutirwa gukora ibikoresho binini kandi bikora neza.Kubwibyo, inzira nka vacuum yafashijwe kwimura imashini (VA-RTM) hamwe no guhinduranya urumuri (L-RTM) byatejwe imbere.
Vacuum yafashije resin yoherejwe muburyo bwa VA-RTM
Vacuum ifasha resin yoherejwe muburyo bwa VA-RTM ni tekinoroji yuburyo bukomoka kubikorwa gakondo bya RTM.Inzira nyamukuru yiki gikorwa ni ugukoresha pompe vacuum nibindi bikoresho kugirango uhindure imbere imbere yububiko aho fibre preform iherereye, kugirango resin yinjizwe mubibumbano byakozwe nigitutu cya vacuum, bigere kubikorwa byo kwinjira. fibre ikora, hanyuma amaherezo igakomera ikanashiraho imbere kugirango ibone imiterere isabwa hamwe nubunini bwa fibre yibice bigize ibice bigize ibintu.
Ugereranije nubuhanga gakondo bwa RTM, tekinoroji ya VA-RTM ikoresha pompe vacuum imbere mubibumbano, bishobora kugabanya umuvuduko watewe inshinge kandi bikagabanya cyane ihinduka ryimiterere ya fibre na fibre, bityo bikagabanya imikorere yimikorere yibikoresho nibikoresho. .Iremera kandi tekinoroji ya RTM gukoresha imashini yoroshye, ifasha kugabanya ibiciro byumusaruro.Kubwibyo, tekinoloji irakwiriye cyane cyane gukora ibice binini bigizwe, Urugero, isahani ya sandwich ifata isahani ni kimwe mu bintu bisanzwe bikoreshwa mu kirere.
Muri rusange, inzira ya VA-RTM irakwiriye cyane mugutegura ibinini binini kandi binini cyane byo mu kirere.Nyamara, ubu buryo buracyafite imashini ikoreshwa mubushinwa, bigatuma umusaruro muke ukora neza.Byongeye kandi, igishushanyo mbonera cyibikorwa ahanini gishingiye kuburambe, kandi igishushanyo mbonera cyubwenge ntikiragerwaho, kuburyo bigoye kugenzura neza ubuziranenge bwibicuruzwa.Muri icyo gihe, ubushakashatsi bwinshi bwerekanye ko imiyoboro ya progaramu itangwa byoroshye mu cyerekezo cyogutemba kwa resin muri iki gikorwa, cyane cyane iyo ukoresheje imifuka ya vacuum, hazabaho urwego runaka rwo kuruhura umuvuduko imbere yimbere ya resin, izabikora Ingaruka zinjira muri resin, zitera ibibyimba gukora imbere yakazi, kandi bigabanye imiterere yibicuruzwa.Muri icyo gihe, gukwirakwiza ingufu zingana bizatera igabanywa ryuburinganire buke bwakazi, bigira ingaruka kumiterere yibikorwa byanyuma, Iyi nayo nikibazo cya tekiniki tekinoloji ikeneye gukemura.
Inzira yoroheje yo kwimura uburyo bwa L-RTM inzira
Inzira ya L-RTM yo guhinduranya imashini yoroheje ni uburyo bushya bw'ikoranabuhanga ryakozwe hashingiwe ku buhanga gakondo bwa VA-RTM.Nkuko bigaragara ku gishushanyo, ikintu cyingenzi kiranga ikoranabuhanga ni uko ifu yo hepfo ifata icyuma cyangwa ikindi cyuma gikomeye, naho ifumbire yo hejuru ikagira igice cyoroheje cyoroshye.Imbere yububiko bwashizweho nuburyo bubiri bwo gufunga, kandi ifumbire yo hejuru ikosorwa hanze binyuze muri vacuum, mugihe imbere ikoresha vacuum kugirango itangire resin.Bitewe no gukoresha igice cyakabiri cyakoreshwaga muburyo bwo hejuru bwiki gikorwa, hamwe na vacuum imiterere yimbere, igitutu kiri imbere hamwe nigiciro cyo gukora cyacyo ubwacyo kiragabanuka cyane.Iri koranabuhanga rirashobora gukora ibice binini bigize ibice.Ugereranije na gakondo ya VA-RTM, ubunini bwibice byabonetse muriki gikorwa birasa kandi ubwiza bwimiterere yo hejuru no hepfo burarenze.Muri icyo gihe, gukoresha ibikoresho bya kimwe cya kabiri mu buryo bwo hejuru birashobora kongera gukoreshwa, Iri koranabuhanga ryirinda gusesagura imifuka ya vacuum muri gahunda ya VA-RTM, bigatuma ikwiranye cyane no gukora ibice bigize icyogajuru hamwe n’ibisabwa hejuru y’ubuziranenge.
Nyamara, mubikorwa nyabyo byakozwe, haracyari ingorane zimwe na zimwe za tekiniki muriki gikorwa:
.Muri icyo gihe, ubukana bwikibumbano nabwo bugira ingaruka kumibereho yububiko ubwabwo.Nigute ushobora guhitamo igice gikwiye nkibikoresho bya L-RTM nimwe mubibazo bya tekiniki mugukoresha iki gikorwa.
.Gufunga bidahagije birashobora gutera resin idahagije imbere yakazi, bityo bikagira ingaruka kumikorere.Kubwibyo, tekinoroji yo gufunga imashini nimwe mubibazo bya tekiniki mugukoresha iki gikorwa.
.Gutezimbere matrike ikwiye nimwe mubibazo bya tekiniki mugukoresha iyi nzira.
(4) Mubikorwa bya L-RTM, mubisanzwe birakenewe gushushanya imiyoboro itemba kumurongo kugirango iteze imbere imyanda imwe.Niba imiyoboro yimiyoboro idahwitse, irashobora gutera inenge nkibibanza byumye hamwe namavuta akungahaye mubice, bigira ingaruka zikomeye kumiterere yanyuma yibice.Cyane cyane kubice bitatu-bingana, uburyo bwo gushushanya umuyoboro utemba neza kandi nimwe mubibazo bya tekiniki mugukoresha iki gikorwa.
Igihe cyo kohereza: Mutarama-18-2024
