Blow molding inzira iyo zvinyorwa zvinoumbwa nekuumbwa kweresin yakanyungudutswa kuti izadze gomba reforoma rine chimiro uye mativi anodiwa. Kuumba kwekudzvanya ndiyo nzira yekare kwazvo yekugadzira zvigadzirwa zvepolymer, uye inonyanya kushandiswa kugadzira thermosets.
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Blow molding
Blow molding inzira iyo zvinyorwa zvinoumbwa nekuumbwa kweresin yakanyungudutswa kuti izadze gomba rine mold ine chimiro nehukuru hunodiwa.Mabhodhoro ezvinwiwa uye zvimwe zvinwiwa zvinoputiswa.The maviri anonyanya kukosha muitiro variants vari extrusion kuvhuvhuta kuumba uye jekiseni vhuvhuta kuumba.In extrusion vhuvhuta kuumba, imwe extruder pombi kunyunguduka kuburikidza annular kufa kuumba yakanyungudutswa chubhu kana jeri pamwe zvakanaka deŽ ned uye kudzorwa zviyero.Iyo parison inosungirirwa pakati pemahafu maviri e mold uye iri muated nemhepo yemukati yekumanikidza kutora chimiro chegomba re mold, iro rinowanzo tonhorera.Pakupedzisira, chinyorwa chakaumbwa solidiŽ es semugumisiro wekutonhora uye mold inovhurwa kuti ibudise chinyorwa pasina kukuvara.Zvichienderana nekugadzikana kwekupisa kwezvinhu, iyo extrusion process inogona kuenderera kana kupindirana.Masisitimu anopindirana anogona kushandisa screws dzinodzokororwa dzinoshanda semakondohwe, nenzira imwechete sepakuumba jekiseni.
Jekiseni blow molding inzira mbiri.Muchikamu chekutanga, plastiki inopinzwa mugomba umo preform inoumbwa.Iyo preform inozoendeswa kune inorova mold ye in fiation.Jekiseni blow molding inopa mabhenefiti ekwakaringana dimensional control, kubvisa zvimedu uye kuumba mukati meshinda isati yafuridza.Extrusion blow molding inosarudzirwa midziyo ine kureba / dhayamita reshiyo uye kune zvigadzirwa zvine mibato.
Polyethylene terephthalate kana PET ndiyo polymer inonyanya kushandiswa mukuumba jekiseni kuvhuvhuta, yezvinwiwa zvecarbonated nemabhodhoro emvura.Stretch blow molding inoshandiswa kugadzira PET mabhodhoro ezvivakwa zvemuviri zvakawedzeredzwa.Muchiitiko ichi, kutambanudza kunokonzera kuumbwa kwemakristasi maduku e lamellar.Makristasi aya anounza zvigadzirwa zvakajeka uye zvakaoma kupfuura izvo zvinogadzirwa zvisina kuvhuvhuta, izvo zvine spherulitic crystals.
Compression molding
Compression molding ndiyo yekare nzira yekugadzira zvigadzirwa zvepolymer, uye inonyanya kushandiswa kune thermosets.Mukuita uku komisheni inotsikirirwa muforoma nemaplatens anopisa emushini we hydraulic press.Maitirwo aya anotoda kufanana ne- sheet metal stamping.Jekiseni kuumbwa kwemapolymer kwatsiva kuumbwa kwemamwe mapolymer, nekuda kwezvakanaka mukubata zvinhu uye otomatiki.Zvisinei, kuumbwa kwekumanikidza kune mukana mukugadzirisa mapolymers akasimbiswa.Nekuda kwemazinga ane mwero ekugadzirisa uye kushungurudzika kunobatanidzwa mukuumbwa kwekumanikidza, mafiber ekusimbisa haana kukuvara.Yakanyanya kukwirira fiber uye yakareba Žfibres inogona kuverengerwa mune compression yakaumbwa zvigadzirwa
Nguva yekutumira: Jan-01-2017