HP-RTM maitiro

1. Nhanganyaya kune HP-RTM maitiro

HP-RTM (High Pressure Resin Transfer Molding) ndiyo chidimbu cheyakanyanya-kumanikidza resin kutamisa maitiro ekuumba. Iyo tekinoroji yepamberi yekuumba tekinoroji inoshandisa yakakwirira-kudzvanywa kusanganisa uye kubaya resin muvacuum-yakavharwa mold pre-yakagadzikwa nefiber yakasimbiswa zvinhu uye pre-set kuisa. Iyo resin inoyerera kuburikidza nekuzadza mold, impregnation, kurapa uye kudhiza. , kuwana iyo yekuumba maitiro epamusoro-kuita uye yakakwirira-chaiyo inoumbwa zvigadzirwa. Iyo ine mabhenefiti ekushanda kwepamusoro, kuchengetedza simba, uye kuchengetedza kwezvakatipoteredza, uye yakashandiswa zvakanyanya mumotokari, aerospace, zvemagetsi uye mamwe minda.

Iyo nzira inoratidzwa muMufananidzo 1:

Mufananidzo 1 Schematic diagram yeHP-PTM process principle

2. HP-RTM maitiro maitiro

HP-RTM inosanganisira preform kugadzirisa, jekiseni resin, kudzvanya maitiro uye kucheka maitiro. Kuenzaniswa neyechinyakare RTM maitiro, iyo HP-RTM maitiro inowedzera post-jekiseni kudzvanya maitiro, inoderedza kuoma kwejekiseni resin uye kuzadza, inovandudza iyo impregnation mhando yepreforms, uye inopfupisa kutenderera kutenderera. Iwo chaiwo maitiro maitiro ndeaya anotevera:

(1) Kukurumidza kuzadza mold. Iyo resin inokurumidza kuzadza mhango ye mold, ine yakanaka kupinza mhedzisiro, inoderedza zvakanyanya mabubble uye porosity, uye yakaderera-viscosity resin inowedzera zvakanyanya kumhanya kwejekiseni resin uye inopfupisa kutenderera kwemaitiro.

(2) Yakanyanya kushanda resin. Iyo resin yekurapa reaction rate inowedzerwa uye kutenderera kutenderera kweresin kunopfupikiswa. Iyo inotora yakakwira-chiito nekukurumidza-kurapa resin system uye inotora yakakwirira-inoshanda yakakwira-kudzvanya kusanganisa uye jekiseni michina kuti iwane zvirinani kusanganisa kufanana kweiyo resin matrix. Panguva imwecheteyo, nzvimbo yepamusoro-yekushisa inodiwa panguva yekuumbwa, iyo inovandudza zvakanyanya kurapa maitiro eresin, inopfupisa kutenderera kwekugadzira, uye kudzikamisa maitiro. High kugadzikana uye repeatability,

(3) Shandisa yemukati yekuburitsa mumiriri uye yekuzvichenesa sisitimu yekuvandudza kuchenesa kwemidziyo. Iyo yekuzvichenesa tekinoroji yemusoro wekusanganisa jekiseni inoshandiswa, uye chikamu chemukati chekuburitsa chinowedzerwa kune yakasvibirira kuti inyatso kuvandudza kuchenesa kwemidziyo. Panguva imwecheteyo, maitiro epamusoro echigadzirwa akanakisa, uye ukobvu uye kutsauka kwechimiro kudiki. Kuwana yakaderera-mutengo, pfupi-kutenderera (yakakura-vhoriyamu), yakakwirira-mhando kugadzirwa.

(4) Shandisa in-mold yekukurumidza vacuum tekinoroji. Izvo zvinyorwa zvepore muzvikamu zvakaderedzwa uye kushanda kwezvikamu kunovandudzwa. Iyo inonyatso kudzikisa iyo pore zviri muchigadzirwa, inovandudza iyo fiber impregnation kunyatsoita, inovandudza iyo interface yekubatanidza kugona pakati pefiber uye resin, uye inovandudza kunaka kwechigadzirwa.

(5) Kubatanidza vacuuming ne compression molding process mushure mejekiseni. Iyo nzira yakaoma yezvikamu inoderedzwa uye kunaka kweiyo resin-impregnated yakasimbiswa zvinhu inovandudzwa. Iyo inoderedza kuoma kwekugadzira iyo glue jekiseni chiteshi uye epoust port yeRTM maitiro, inovandudza kuyerera kwekuzadza kweresin, uye iyo impregnation mhando yefiber neresin.

(6) Shandisa nzvimbo dzakaomesesa mbiri kuvhara mold, uye shandisa hombe-tonnage hydraulic press yepressurization. Chigadzirwa chacho chine misiyano yakaderera mukukora uye matatu-dimensional chimiro. Kuti uve nechokwadi chekuisa chisimbiso chekuumbwa, nzvimbo dzakaomesesa mbiri dzinoshandiswa kuvhara mold, uye hombe-tonnage hydraulic press inoshandiswa kupressurization, iyo inowedzera simba rekumanikidza panguva yekuumbwa uye zvinobudirira kuderedza ukobvu uye kutsauka kwechimiro. yezvikamu.

(7) Chigadzirwa chine zvakanakisa zvepamusoro zvimiro uye mhando. Uchishandisa in-mold spraying tekinoroji uye yakakwirira-gloss molds, zvikamu zvinogona kuwana yakakwirira-chaiyo inooneka mhando munguva pfupi kwazvo.

(8) Iyo ine yakakwira maitiro kugadzikana uye kudzokorora. Iko kushandiswa kwegeji jekiseni uye post-injection compression tekinoroji inovandudza zvakanyanya mold yekuzadza kuyerera kweiyo resin, zvinonyatso kudzikisa mukana wekukanganisa kwemaitiro, uye ine yakakwira maitiro ekudzokorora.

3. Makiyi maitiro matekinoroji

(1) Pre-kugadzira tekinoroji yefiber yakasimbiswa zvinhu

Fiber preforming tekinoroji inonyanya kusanganisira: machira, kuruka uye kuruka preforms; kusona preforms; akachekwa faibha jekiseni preforms; kupisa kudzvanya preforms, etc. Pakati pavo, kupisa kupisa kuumba tekinoroji ndiyo inonyanya kushandiswa. Mune tekinoroji iyi, mumiririri ndiyo vimbiso yekutanga, uye fiber preforming mold uye kudzvanya tekinoroji ndiyo kiyi yekuumbwa kwefiber. Kune iyo HP-RTM maitiro, iyo chikamu chimiro chiri nyore, saka kuumba mold zvakare iri nyore. Chinokosha chiri munzira yekudzora kuumba mold uye kudzvanya tooling kuti ibudirire uye kurongeka kudzvanya uye chimiro kuburikidza nekugadzira uye kutonga maitiro.

(2) Yakakwirira-chaiyo resin metering, kusanganisa uye jekiseni tekinoroji

Iko kusanganiswa uye jekiseni yeHP-RTM process resin inonyanya kusanganisira maviri masisitimu: resin main material uye in-mold spray resin. Kiyi yekutonga kwayo iri mune yakakwira-chaiyo resin metering system, nekukurumidza uye yunifomu yekusanganisa tekinoroji uye yekusanganisa michina yekuzvichenesa tekinoroji. Iyo HP-RTM process resin main material inoda kuyerwa nemazvo pasi petembiricha yakakwira uye yakanyanya kudzvanywa, inoda yakakwirira-chaiyo metering pombi michina. Kusanganisa kusanganisa uye kuzvichenesa kweresin kunoda kugadzirwa kwemusoro unoshanda, unozvichenesa, wakawanda unosanganisa musoro.

(3) Mold mold tembiricha munda kufanana uye chisimbiso dhizaini

Munguva yeHP-RTM maitiro, kufanana kwenzvimbo yekushisa kweiyo mold mold haingotaridzi uye inokanganisa kuyerera uye kuzadza mashandiro eresin mugomba rekuumbwa, asi zvakare ine simba rakakura pakuita kwefiber infiltration, kuita kwese. yezvakasanganiswa zvinhu, uye kushushikana kwemukati kwechigadzirwa. . Naizvozvo, zvinodikanwa kushandisa yepakati kudziyisa yakasanganiswa neanoshanda uye inonzwisisika kutenderera kwemafuta edunhu dhizaini. Kuisa chisimbiso kwe mold kunoteya zvakananga kuyerera kwe resin uye mold kuzadza maitiro, pamwe nekugona kwekubuda kwemaitiro ekuumba. Iyo yakakosha link inokanganisa kushanda kwechigadzirwa. Izvo zvinodikanwa kugadzira chinzvimbo, nzira uye huwandu hwekuisa chisimbiso mhete zvinoenderana nechigadzirwa. Panguva imwecheteyo, zvinodikanwa kugadzirisa matambudziko ekuisa chisimbiso mugomba rakakodzera mold, ejection system, vacuum system uye zvimwe zvinzvimbo kuti ive nechokwadi chekuti hapana kubuda kwemhepo panguva yekuzadza resin kuti ive nechokwadi chekuita kwechikamu.

(4) Yakakwirira-chaiyo hydraulic press uye yayo yekudzora tekinoroji

Mune iyo HP-RTM maitiro, iyo mold yekuvhara gap kudzora mune resin kuzadza maitiro uye kudzvanywa kwekudzora mukutsikirira maitiro zvese zvinoda vimbiso yeinoshanda uye yakakwirira-chaiyo hydraulic press system. Panguva imwecheteyo, panguva yekudzora tekinoroji inoda kupihwa zvinoenderana nezvinodiwa zveglue jekiseni maitiro uye kudzvanya maitiro kuti ive nechokwadi chekuenderera kwekuumbwa.