Buku Lofunika Kwambiri Lokhudza Kusindikiza kwa 3D ndi PP (Polypropylene)
2025-12-25
PP ndi chinthu chopangidwa ndi theka-kristalo chokhala ndi kuuma bwino komanso kusinthasintha, zomwe zimapangitsa kuti chikhale choyenera kwambiri pazinthu zomwe zimafuna kusuntha, monga ma hinges ndi ma buckles. Makhalidwe ake ofunikira ndi omveka bwino: chimatha kukana ma acid, alkalis, ndi zosungunulira zambiri, zomwe zimapangitsa kuti chigwiritsidwe ntchito m'magawo azachipatala ndi magalimoto; sichimasweka mosavuta popindika mobwerezabwereza, kusinthana ndi nyumba zoyenda pafupipafupi; kuchuluka kwake ndi pafupifupi 0.9 g/cm³, zomwe zimapangitsa kuti kulemera kwake kukhale kopepuka komanso kolimba; ndipo sichimakhala chofanana ndi hygroscopic, zomwe zimapangitsa kuti kukonzedwa kusanachitike kusindikizidwe kukhala kosavuta.
II. Mfundo Zofunikira Zosindikizira za 3D
1. Magawo Apakati
Ikani magawo apakati motere: kutentha kwa nozzle kwa PP yoyera kumasinthidwa kukhala 210–230°C, pomwe kwa PP yophatikizika, kumasinthidwa kukhala 250–280°C; sungani kutentha kwa bedi lotenthedwa pa 50–100°C, komwe kumasinthidwa makamaka malinga ndi mbale yoyambira—Ma plate a PEI nthawi zambiri amafunikira 100°C, ndipo ma plate enieni a PP amafunikira pafupifupi 80°C; liwiro losindikiza likhoza kulamulidwa pa 30–100 mm/s.
2. Kumamatira ndi Malo Ozungulira (Pachimake)
Kumatirira pabedi ndi vuto lalikulu. Mayankho: Gwiritsani ntchito guluu wa Magigoo PP, guluu wa Feisheng kapena Yousu PP. Mukagwiritsa ntchito guluu wa PP, thirani mofanana kwa zigawo ziwiri kapena kuposerapo. Mukathira koyamba, yatsani mbale yoyambira mpaka 50°C ndikuisunga kutentha kwa mphindi 5, kenako thirani gawo lachiwiri musanayambe kusindikiza. Kuphatikiza apo, dziwani kuti fan yoziziritsira iyenera kukhazikitsidwa pa 30-40%, onjezani siketi ya 15-20mm mulifupi yokhala ndi mpata wa 0 pakati pa chitsanzo ndi siketi, ndikulamulira kutentha kwa chipinda chosindikizira pa 55-60°C.
3. Kusamalira Filamenti ndi Kuthetsa Mavuto
Kusamalira filamenti ndi kuthetsa mavuto omwe amakumana nawo: Umitsani filamenti pa 65°C kwa maola 4-6 musanasindikize. Sungani mu chidebe chotsekedwa ndi paketi ya desiccant kuti mupewe chinyezi komanso kupewa kusokoneza ubwino wa kusindikiza.
III. Ubwino, Zoyipa ndi Kugwiritsa Ntchito
Ubwino wake ndi woonekera bwino: kulimba, kusinthasintha kwamphamvu kwa chilengedwe, komanso kugwiritsa ntchito bwino ndalama; kuipa kuyeneranso kudziwika: kupindika kosavuta, kukonza pambuyo pake komwe kumafunika pamalo owala kwambiri, kusintha kambiri komwe kumafunika kwa oyamba kumene, ndi satifiketi yapadera iyenera kupezeka ngati ikugwiritsidwa ntchito pazochitika zokhudzana ndi chakudya.
Zochitika zomwe zimagwiritsidwa ntchito nthawi zambiri: mabampala a magalimoto ndi ziwalo zamkati; mathireyi oyeretsera m'munda wazachipatala; zotengera zolumikizidwa tsiku ndi tsiku; mapaipi osapsa ndi dzimbiri m'makampani; ma ducts opepuka a mpweya mumlengalenga, ndi zina zotero.
IV. Mitundu ya Zinthu
Pali mitundu itatu yodziwika bwino ya zipangizo za PP: SLS pure PP (yoyera mwachilengedwe, yolimba bwino ndi mankhwala); SLA PP-like resin (yowala, yosinthasintha mofanana ndi PP); Carbon FPU 50 (yofewa kwambiri, yotalika mpaka 200%).
Mwachidule, ngakhale kuti tsatanetsatane wa njira zina ziyenera kudziwika posindikiza PP, magwiridwe ake ndi abwino kwambiri. Bola ngati mutadziwa bwino magawo ofunikira ndi njira zogwirira ntchito, mutha kupanga bwino magawo oyenerera kuyambira pa zitsanzo mpaka zinthu zomalizidwa.

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