Kodi njira zopangira botolo la PET preform blowlow ndi ziti?

1. Extrusion kuwomba akamaumba

Extrusion blowing akamaumba ndi imodzi mwa njira ambiri ankagwiritsa ntchito zotengera pulasitiki ma CD.Ufa (kapena granular material) wa pulasitiki wa thermosetting umasungunuka kudzera mu extruder, kenako umapangidwa kukhala parison yotentha yosungunuka molingana ndi chubu chapadera.Pamene parison kuposa preset kutalika, parison amalowa nkhungu, nkhungu chatsekedwa, ndiyeno kuwomba kuumbidwa.
Makhalidwe a njira yopangira iyi ndi: Kuchita bwino kwambiri, kutentha kwa parison, mawonekedwe ovomerezeka osiyanasiyana, kukula ndi makulidwe a khoma la chidebe chopanda kanthu, kusinthasintha kwamphamvu, mphamvu yopondereza ya kuwombera, makina osavuta ndi zida, ndi otsika. ndalama za engineering.Komabe, kulondola kwa ntchito yamanja sikwapamwamba.Mkatikati mwa ulusi wakunja udzasintha ndi kusintha kwa ulusi wakunja pamwamba.Pansi pa chidebecho pali msoko wa zigamba.

2. jekeseni kuwomba akamaumba
Jekeseni nkhonya akamaumba amagwiritsa pulasitiki makina kubaya parison mu mandrel.Pambuyo pozizira pang'ono, mandrel ndi parison amadyetsedwa mu chida chowombera.The nkhonya akamaumba chida akanikiza mandrel ndi mpweya anayambitsa kutsekedwa ndi wothinikizidwa kotero kuti Parison amakula ndi kutulutsa ntchito zamanja zofunika, ndipo katundu amachotsedwa pambuyo firiji ndi olimba.
Makhalidwe a njira yopangira iyi: palibe zotchinga muzojambula, palibe chifukwa chokonzanso pambuyo pake, kulondola kwakukulu kwa ulusi wakunja ndi zoyimitsa mabotolo, mkati mwa mutu ndi khosi pamutu ndi kuzungulira kosalala, mphamvu yopangira ikhoza kukhala. chachikulu, pali makina othandizira ochepa ndi zida, ndipo mphamvu yopondereza pansi pa chinthucho ndi Yapamwamba, kugwiritsa ntchito zinthu zochepa, makulidwe a khoma yunifolomu, komanso kupanga bwino kwambiri.Komabe, ndalama zama projekiti za zida zamakina ndizokulirapo, nthawi yopangira ndi yayitali, zofunikira kwa ogwiritsa ntchito ndizokwera, mawonekedwe ake sayenera kukhala ovuta kwambiri, ndipo zotengera zotengera ndizochepa, kotero ndizoyenera kupanga zazing'ono ndi zazing'ono. zotengera zolondola kwambiri.

3. Kuwomba kuwomba
Njira yowumba ndikugwiritsa ntchito ndodo yotambasula kuti mutambasulire ma radial ndipo nthawi yomweyo muyambe kuumba.Kuphatikiza apo, pakuumba, ma macromolecules achilengedwe amakhazikitsidwa mwadongosolo pamakoma a zojambulajambula, potero kuwongolera magwiridwe antchito a chidebe chapulasitiki.
Makhalidwe a njira iyi akamaumba ndi: mlingo otsika chilema, mkulu kupanga dzuwa, kulamulira mosavuta ukonde kulemera, mkulu fracture toughness, bwino rigidity, ngakhale bwino ndi kusalala kwa ntchito zamanja, ndi chotchinga chabwino ndi kusindikiza katundu, koma kulamulira kutentha zofunika kuti anatambasula. ndizokwera kwambiri, ndipo ndalama zamakina ndi zida ndizokulirapo.