Kuwomba Kuumba: Blow Molding ndi njira yachangu, yaukadaulo yophatikiza zonyamula zopanda kanthu za ma polima a thermoplastic. Zinthu zopangidwa pogwiritsa ntchito njira iyi nthawi zambiri zimakhala ndi makoma ang'onoang'ono ndipo zimafika kukula ndi mawonekedwe kuchokera ku mitsuko yaing'ono, yopambanitsa kupita ku matanki agalimoto. Mumkombero uwu mawonekedwe a cylindrical (parson) opangidwa ndi polima wotenthedwa amakhala mu dzenje la mawonekedwe ogawanika. Mpweya umalowetsedwa kudzera mu singano m'chipinda cha ndende, chomwe chimafikira kuti chizolowerane ndi dzenjelo. Ubwino wa kuwombera umaphatikizira chipangizo chotsika ndikudula mtengo wa ndowa, mitengo yolenga mwachangu komanso kuthekera kopanga mawonekedwe ovuta pachidutswa chimodzi. Ndi zoletsedwa, ngakhale, zopanda kanthu kapena mawonekedwe a cylindrical.
Calendar: Calendar imagwiritsidwa ntchito popanga mapepala ndi makanema a thermoplastic ndikuyika zovundikira zapulasitiki kumbuyo kwazinthu zosiyanasiyana. Ma thermoplastics a batter ngati kusasinthika amanyalanyazidwa ndikupitilira kwa mipukutu yotenthedwa kapena yokhazikika. Ubwino wake umaphatikizapo ndalama zochepa komanso kuti mapepala operekedwa amamasulidwa ku nkhawa. Zimangogwiritsidwa ntchito pamapepala ndipo mafilimu ang'onoang'ono sangathe.
Kuponya: Casting imagwiritsidwa ntchito popereka mapepala, mipiringidzo, machubu, kuvina koyambirira ndikuyika komanso kuteteza zida zamagetsi. Ndi njira yoyambira, yosafuna mphamvu yakunja kapena kukangana. Mawonekedwe amadzaza ndi pulasitiki yamadzimadzi (ma acrylics, epoxies, polyesters, polypropylene, nayiloni kapena PVC angagwiritsidwe ntchito) kenako amatenthedwa kuti akonze, kenako zinthuzo zimakhala isotropic (zimakhala ndi mawonekedwe ofanana motere ndi apo). Ubwino wake ndi monga: mtengo wotsika, kuthekera kopangira magawo akulu okhala ndi magawo okhuthala, kumalizidwa koyenera komanso kutonthoza kwake pakupanga kocheperako. Zachisoni, zimangokhala zowongoka pang'ono ndipo zimakonda kukhala zopanda chuma pamapangidwe apamwamba.
Compression Molding: Compression Molding imagwiritsidwa ntchito kwambiri posamalira ma polima a thermosetting. Chiyerekezo choyezeratu, chomwe nthawi zambiri chimapangidwa kale cha polima chimakutidwa mkati mwa mawonekedwe otsekeka ndipo chimawonetsedwa mwamphamvu ndi kupsinjika mpaka chitenge momwe dzenje lamawonekedwe limapangidwira ndikukonza. Ngakhale kuti nthawi yosinthira kupanikizika ndi yayitali kwambiri kuposa yopangira kulowetsedwa ndipo mbali zambiri zam'mbali kapena kukana kwambiri kumakhala kovuta kupereka, imakhala ndi maubwino angapo kuphatikiza mtengo wotsika wa nyumba ya boma (zida ndi zida zomwe zimagwiritsidwa ntchito ndizowongoka komanso zowongoka. zotsika mtengo), zinyalala zazing'ono zakuthupi komanso zenizeni zomwe zida zazikulu, zovutirapo zimatha kupangidwa komanso kuti kuzungulirako kumakhala kosunthika kuti pakhale makompyuta mwachangu.
Kuthamangitsidwa: Kuthamangitsa kumagwiritsidwa ntchito pophatikizana kosayimitsa filimu, mapepala, machubu, ma tchanelo, mafani, mipiringidzo, mfundo ndi ma filaments komanso mbiri zosiyanasiyana komanso zokhudzana ndi kuwombera. Polima wa ufa kapena granular thermoplastic kapena thermoset polima amasamaliridwa kuchokera m'chidebe kupita mu mbiya yotenthedwa kumene amasungunuka kenako amatumizidwa, monga lamulo ndi pivoting screw, kupyolera mu spout yokhala ndi gawo loyenera la mtanda. Amaziziritsidwa ndi kuthirira kwamadzi ndipo kenako amadulidwa mpaka utali woyenerera. Kuthamangitsidwa kumatengera kutsika mtengo kwa chipangizocho, kuthekera kogwira ndi mawonekedwe ovuta, mwayi wopanga zinthu mwachangu komanso kuthekera kopaka zokutira kapena majekete kuzinthu zapakati (monga waya). Imalekeredwa kumadera omwe ali ndi gawo limodzi, zikhale momwemo.
Jekeseni Kumangira:Jekeseni Kumangirandiye njira yomwe imagwiritsidwa ntchito kwambiri popanga zinthu zazikulu zapulasitiki chifukwa cha kuchuluka kwake komanso kulamulira kwakukulu pazinthuzo. (El Wakil, 1998) Munjira iyi, polima imasamaliridwa kuchokera pachidebe chokhala ndi pellet kapena mawonekedwe a ufa kupita kuchipinda komwe amatenthedwa kuti azitha kusinthasintha. Kenaka amakakamizika kukhala gawo logawanika ndipo amalimbitsa pansi pa kupsinjika maganizo, pambuyo pake mawonekedwewo amatsegulidwa ndipo gawolo limatulutsidwa. Zowonjezera za kupanga kulowetsedwa ndi kuchuluka kwa kulenga, kutsika mtengo kwa ntchito, kupangidwanso kwakukulu kwa zovuta zobisika komanso kumaliza kwakukulu. Zolepheretsa zake ndi zida zoyambira komanso zotsika mtengo komanso momwe sizingagwire ntchito pazachuma pamayendedwe ochepa.
Kuzungulira Kozungulira: Rotational Molding ndi kuzungulira komwe zinthu zopanda kanthu zimatha kupangidwa kuchokera ku thermoplastics ndipo nthawi zina ma thermosets. Mlandu wa polima wamphamvu kapena wamadzimadzi umayikidwa mu mawonekedwe, omwe amatenthedwa pomwe akutembenuzira ma tomahawk awiri otsutsana. Mwanjira imeneyi, mphamvu ya radial imakankhira polima pamakoma a mawonekedwewo, ndikuyika makulidwe a yunifolomu kuti agwirizane ndi malo a pabowo ndiyeno atakhazikika ndikuchotsedwa mawonekedwewo. Kuyanjana kwanthawi zonse kumakhala ndi nthawi yotalikirapo koma kumasangalala ndi mwayi wopereka mwayi wazinthu zopanda malire komanso kulola kuti magawo ovuta apangidwe pogwiritsa ntchito zida zotsika mtengo komanso zida.
Thermoforming: Thermoforming imaphatikizapo mikombero yosiyanasiyana yomwe imagwiritsidwa ntchito popanga zinthu zopangidwa ndi kapu, mwachitsanzo, zipinda, matabwa, malo ogona ndi makina owunikira kuchokera pamapepala a thermoplastic. Pepala lopumula lokhazikika la thermoplastic lili pamwamba pa mawonekedwewo ndipo mpweya umachotsedwa pakati pa ziwirizi, kukakamiza pepalalo kuti ligwirizane ndi mawonekedwe ake. Polima kenako itakhazikika kotero kuti imagwira mawonekedwe ake, kuchotsedwa mu mawonekedwe ndipo ukonde wozungulira umayendetsedwa. Ubwino wa thermoforming ndi monga: kutsika mtengo kwa zida, mwayi wopanga magawo ambiri okhala ndi malo ochepa komanso kuti nthawi zambiri zimakhala zanzeru kupanga magawo ochepa. Ndizoletsedwa chifukwa zigawozo ziyenera kukhala zokhazikika, pali zokolola zambiri, pali zida zingapo zomwe zingagwiritsidwe ntchito ndi kuzunguliraku, ndipo momwe chinthucho sichingakhale ndi zotseguka.
Nthawi yotumiza: Jan-03-2025
