Chiyambi cha Pulasitiki Extrusion
Plastic extrusion ndi imodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri popanga mapulasitiki, makamaka pa thermoplastics. Mofanana ndi jekeseni, extrusion imagwiritsidwa ntchito popanga zinthu zokhala ndi mbiri yopitilira, monga mapaipi, machubu, ndi mbiri yapakhomo. Kutulutsa kwamakono kwa thermoplastic kwakhala chida champhamvu kwazaka pafupifupi zana, kupangitsa kuti pakhale kuchuluka kwambiri kwamagawo ambiri. Makasitomala amagwirizana ndi makampani apulasitiki otulutsa pulasitiki kuti apange ma extrusions makonda apulasitiki pazosowa zawo zenizeni.
Nkhaniyi ikufotokoza zofunikira za pulasitiki extrusion, kufotokoza momwe ndondomekoyi imagwirira ntchito, zomwe zipangizo za thermoplastic zimatha kutulutsidwa, ndi zinthu ziti zomwe zimapangidwira kudzera mu pulasitiki extrusion, ndi momwe pulasitiki extrusion ikuyerekeza ndi aluminium extrusion.
Pulasitiki Extrusion Njira
Kuti mumvetsetse momwe pulasitiki imagwirira ntchito, ndikofunikira kudziwa chomwe extruder ndi momwe imagwirira ntchito. Kawirikawiri, extruder imakhala ndi zigawo zotsatirazi:
Hopper: Kusunga zipangizo zapulasitiki.
Dyetsani Pakhosi: Amadyetsa pulasitiki kuchokera ku hopper kupita ku mbiya.
Mgolo Wotenthetsera: Umakhala ndi zomangira zoyendetsedwa ndi mota, zomwe zimakankhira zinthuzo mpaka kufa.
Breaker Plate: Yokhala ndi chotchinga chosefera zinthu ndikusunga kupanikizika.
Paipi Yodyetsera: Kusamutsa zinthu zosungunuka kuchokera ku mbiya kupita kukufa.
Kufa: Kupanga zinthuzo kukhala mbiri yomwe mukufuna.
Dongosolo Lozizira: Imatsimikizira kulimba kofanana kwa gawo lotuluka.
Njira yotulutsa pulasitiki imayamba ndi kudzaza hopper ndi zida zolimba, monga ma pellets kapena flakes. Zinthuzo zimadyetsedwa ndi mphamvu yokoka kudzera mummero wa chakudya kupita ku mbiya ya extruder. Pamene zinthu zimalowa mu mbiya, zimatenthedwa kudzera m'madera ambiri otentha. Panthawi imodzimodziyo, zinthuzo zimakankhidwira kumapeto kwa mbiya ndi zomangira zobwerezabwereza, zoyendetsedwa ndi mota. Zomangira ndi kukakamiza zimatulutsa kutentha kwina, kotero kuti zowotchera siziyenera kukhala zotentha ngati kutentha komaliza.
Pulasitiki yosungunuka imatuluka mu mbiya kudzera pachinsalu cholimbikitsidwa ndi mbale yosweka, yomwe imachotsa zowononga ndikusunga kupanikizika kofanana mkati mwa mbiya. Zinthuzo zimadutsa papoyipo ya chakudya kukhala chofa chachizolowezi, chomwe chimakhala ndi chotsegula chofanana ndi mawonekedwe omwe amafunidwa, ndikupanga mawonekedwe apulasitiki.
Pamene zinthuzo zimakakamizika kupyolera mu kufa, zimatengera mawonekedwe a kufa kutsegulira, kumaliza ndondomeko ya extrusion. The extruded mbiri ndiye utakhazikika mu osamba madzi kapena kudzera angapo kuzirala masikono kulimbitsa.
Extrusion Plastics
Pulasitiki extrusion ndi yoyenera kwa zipangizo zosiyanasiyana za thermoplastic, zotenthetsera kumalo osungunuka popanda kuchititsa kuwonongeka kwa kutentha. Kutentha kwa extrusion kumasiyanasiyana malinga ndi pulasitiki yeniyeni. Mapulasitiki odziwika bwino a extrusion ndi awa:
Polyethylene (PE): Imatuluka pakati pa 400°C (yotsika-kachulukidwe) ndi 600°C (kuchuluka-kachulukidwe).
Polystyrene (PS): ~450°C
Nayiloni: 450°C mpaka 520°C
Polypropylene (PP): ~450°C
PVC: Pakati pa 350°C ndi 380°C
Nthawi zina, ma elastomer kapena mapulasitiki a thermosetting amatha kutulutsidwa m'malo mwa thermoplastics.
Kugwiritsa Ntchito Plastic Extrusion
Makampani opangira pulasitiki amatha kupanga magawo osiyanasiyana okhala ndi mbiri yofananira. Mbiri ya pulasitiki extrusion ndi yabwino kwa mapaipi, mbiri ya zitseko, mbali zamagalimoto, ndi zina zambiri.
1. Mipope ndi Tubing
Mapaipi apulasitiki ndi machubu, omwe nthawi zambiri amapangidwa kuchokera ku PVC kapena ma thermoplastics ena, ndizomwe zimagwiritsidwa ntchito popanga pulasitiki chifukwa cha mawonekedwe awo osavuta a cylindrical. Chitsanzo ndi mapaipi otulutsa ngalande.
2. Wire Insulation
Ma thermoplastics ambiri amapereka magetsi abwino kwambiri komanso kukhazikika kwamafuta, zomwe zimawapangitsa kukhala oyenera kutulutsa ndi kutulutsa mawaya ndi zingwe. Fluoropolymers amagwiritsidwanso ntchito pa izi.
3. Pakhomo ndi Mawindo Mbiri
Mafelemu a pulasitiki ndi mazenera, omwe amadziwika ndi mbiri yawo mosalekeza ndi kutalika kwake, ndiabwino kwa extrusion. PVC ndichinthu chodziwika bwino cha pulogalamuyi ndi zida zina zapakhomo zokhudzana ndi mbiri ya pulasitiki extrusion.
4. Akhungu
Akhungu, okhala ndi ma slats ambiri ofanana, amatha kutulutsidwa kuchokera ku thermoplastics. Mbiriyo nthawi zambiri imakhala yayifupi, nthawi zina imakhala ndi mbali imodzi yozungulira. Polystyrene nthawi zambiri imagwiritsidwa ntchito popanga akhungu a matabwa.
5. Kuvula Nyengo
Makampani opanga pulasitiki nthawi zambiri amatulutsa zinthu zochotsera nyengo, zomwe zimapangidwira kuti zigwirizane bwino ndi mafelemu a pakhomo ndi mawindo. Rubber ndi chinthu chodziwika bwino pakuchotsa nyengo.
6. Windshield Wipers ndi Squeegees
Ma wipers amagalimoto amagalimoto nthawi zambiri amatuluka. Pulasitiki yotulutsidwa imatha kukhala zida za mphira zopangidwa ngati EPDM, kapena kuphatikiza mphira wopangidwa ndi chilengedwe. Masamba a squeegee a pamanja amagwira ntchito mofanana ndi ma wipers a windshield.
Pulasitiki Extrusion vs. Aluminium Extrusion
Kupatula thermoplastics, aluminiyamu imatha kutulutsidwanso kuti ipange magawo opitilira mbiri. Ubwino wa aluminiyumu extrusion ndi wopepuka, madutsidwe, ndi recyclability. Zomwe zimagwiritsidwa ntchito pa aluminiyamu extrusion zimaphatikizapo mipiringidzo, machubu, mawaya, mapaipi, mipanda, njanji, mafelemu, ndi masinki otentha.
Mosiyana ndi pulasitiki extrusion, zotayidwa extrusion akhoza mwina otentha kapena ozizira: otentha extrusion ikuchitika pakati 350 ° C ndi 500 ° C, pamene ozizira extrusion ikuchitika firiji.
Mapeto
Pulasitiki extrusion, makamaka m'nkhani ya China Plastic Pipe Extrusion Line, ndi njira yosunthika komanso yothandiza yopangira magawo opitilira mbiri. Kutha kwake kuthana ndi mitundu yosiyanasiyana ya ma thermoplastics ndi ntchito zake zambiri kumapangitsa kuti ikhale yofunika kwambiri pamakampani opanga pulasitiki.
Nthawi yotumiza: Jul-16-2024