Kuwomba Kumangirira & Compression Molding

Kuwomba ndi njira yomwe zinthu zimapangidwira popanga utomoni wosungunula kuti Židzaze pabowo lokhala ndi mawonekedwe ofunikira komanso miyeso yomwe mukufuna. Kumangirira ndi njira yakale kwambiri yopangira zinthu za polima, ndipo imagwiritsidwa ntchito kwambiri popangira ma thermosets.

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Kujambula kwamphamvu

Kuwomba ndi njira yomwe zinthu zimapangidwira popanga utomoni wosungunula kuti Ž kudzaza pabowo lokhala ndi mawonekedwe ndi miyeso yomwe mukufuna.Mabotolo a zakumwa zozizilitsa kukhosi ndi zakumwa zina amawumbidwa.Awiri zofunika kwambiri ndondomeko zosiyanasiyana ndi extrusion nkhonya akamaumba ndi jekeseni kuwomba akamaumba.Mu extrusion kuwomba akamaumba, ndi extruder mapampu kusungunula mwa annular kufa kupanga chosungunuka chubu kapena parison ndi bwino deŽ ned ndi ankalamulira miyeso.Parisonyo imatsekeredwa pakati pa magawo awiri a nkhungu ndipo imatenthedwa ndi mpweya wamkati kuti itenge mawonekedwe a nkhungu, yomwe nthawi zambiri imakhazikika.Pomaliza, nkhani yopangidwa solidiŽ es chifukwa cha kuzizira ndipo nkhungu imatsegulidwa kuti itulutse nkhaniyo popanda kuwonongeka.Kutengera kukhazikika kwa kutentha kwa zinthuzo, njira yotulutsirayi imatha kukhala yopitilira kapena yapakatikati.Makina okhazikika amatha kugwiritsa ntchito zomangira zomwe zimagwira ntchito ngati nkhosa zamphongo, monga momwe zimakhalira popanga jakisoni.

Kupanga jekeseni ndi njira ziwiri.Pa gawo loyamba, pulasitiki imabayidwa m'bowo pomwe preform imawumbidwa.Pambuyo pake, preform imasamutsidwa ku nkhungu yowomba kuti ikhale mu fiation.Kumangirira jekeseni kumapereka ubwino wowongolera moyenera mawonekedwe, kuchotsa zinyalala ndikumangirira ulusi musanawombe.Kumangirira kupyolera kumakonda kwa zotengera zokhala ndi kutalika / m'mimba mwake komanso zopangidwa ndi zogwirira.

Polyethylene terephthalate kapena PET ndiye polima yomwe imagwiritsidwa ntchito kwambiri popanga jekeseni, pazakumwa za carbonated ndi mabotolo amadzi.Stretch blowing imagwiritsidwa ntchito kupanga mabotolo a PET okhala ndi mawonekedwe owonjezera.Pochita izi, kutambasula kumapangitsa kupanga makristasi ang'onoang'ono a lamellar.Makristalowa amabweretsa zinthu zowoneka bwino komanso zolimba kuposa zomwe zimapangidwa popanda kuwomba, zomwe zimakhala ndi makristalo ozungulira.

Kupaka compress

Kuponderezana ndi njira yakale kwambiri yopangira zinthu za polima, ndipo imagwiritsidwa ntchito kwambiri popanga ma thermosets.Pochita izi chigawocho chimapanikizidwa mu nkhungu ndi mapepala otentha a hydraulic press.Njira imeneyi ndi yofanana ndi masitampu achitsulo.Jekeseni akamaumba ma polima walowa m'malo psinjika akamaumba kwa ma polima ena, chifukwa cha ubwino akugwira zipangizo ndi automation.Komabe, psinjika akamaumba ali ndi ubwino pokonza analimbitsa ma polima.Owing mlingo wodzichepetsa mapindikidwe ndi nkhawa nawo psinjika akamaumba, ndi kulimbikitsa ulusi si kuonongeka.Kuchuluka kwa ulusi wambiri komanso ma fiber otalikirapo amatha kuphatikizidwa muzinthu zopangidwa ndi compression