1. The compression ratio ye single screw extruder screw yakakodzera pakati pe1: 2-1: 3, zvichida 1: 2.5, uye iyo yakakwana kureba kusvika kudhayamita reshiyo yetatu-stage screw ndeye 25. A good screw design inogona kudzivirira zvinhu. kuora nekutsemuka kunokonzerwa nekukweshana kwakanyanya.Tichifunga kuti kureba kwescrew iL, chikamu chekudya i0.3L, chikamu chekumanikidza i0.4L, chikamu chemita 0.3L, uye gap riri pakati pescrew barrel uye screw ndeye 0.1-0.2mm.Ndiro yehuchi iri kumusoro kwemuchina inoda kuva nemaburi 1.5-5mm, uchishandisa masefa maviri 400 hole/cmsq (anenge 50 mesh).Kana uchiburitsa tambo dzakajeka dzemafudzi, mota yepamusoro yebhiza inowanzodiwa kudzivirira mota kuti isamira kana kupisa nekuda kwekuremerwa.Kazhinji, PVC kana BM screws inowanikwa, asi pfupi compression chikamu screws haana kukodzera.
2. Kupisa kwekuumbwa kunoenderana nezvinhu zvevagadziri vakasiyana-siyana, uye yakakwirira kuoma, iyo yakakwirira yekushisa kweextrusion.Iyo tembiricha yekugadzira inowedzera ne10-20 ℃ kubva pachikamu chekudyisa kuenda kuchikamu chemita.
3. Kana iyo screw speed yakanyanya kukurumidza uye friction yakanyanyisa nekuda kweshear stress, kukurumidza kugadzirisa kunofanira kudzorwa pakati pe 12-60rpm, uye kukosha kwakananga kunobva pane screw diameter.Iyo yakakura dhayamita, inononoka kukurumidza.Chinhu chimwe nechimwe chakasiyana uye kutarisisa kunofanirwa kubhadharwa kune zvinodiwa zvehunyanzvi zvemupi.
4. Usati washandiswa, screw inoda kunyatsocheneswa, uye PP kana HDPE inogona kushandiswa kuchenesa pakushisa kwepamusoro.Zvishandiso zvekuchenesa zvinogona kushandiswawo kuchenesa.
5. Magadzirirwo emusoro wemuchina anofanirwa kugadziridzwa uye hapafanirwe kuve nemakona akafa kuti ave nechokwadi chekuyerera kwezvinhu.Mutsetse wekutakura weiyo mold sleeve inogona kukwidziridzwa zvakafanira, uye kona iri pakati pemashizha mold yakagadzirirwa kuva pakati pe8-12 °, iyo inonyanya kukodzera kudzikisa kushushikana kweshear, kudzivirira kudonha kweziso panguva yekugadzira, uye kudzikamisa iyo extrusion. mari.
6. TPU ine high coefficient of friction uye yakaoma kugadzira.Kureba kwetangi yemvura inotonhorera kunofanirwa kunge kwakareba kupfuura zvimwe zvinhu zve thermoplastic, uye TPU ine kuomarara kwakanyanya iri nyore kugadzira.
7. Iyo yepakati waya inofanira kunge yakaoma uye isina mavara emafuta kudzivirira mabhubhu kubva kuitika nekuda kwekupisa.Uye simbisa iyo yakanyanya kusanganiswa.
8. TPU ndeyechikamu chezvinhu zviri nyore hygroscopic, izvo zvinokurumidza kutora unyoro kana zvakaiswa mumhepo, kunyanya kana ether based materials yakawanda hygroscopic pane polyester based materials.Naizvozvo, zvinodikanwa kuve nechokwadi chekuisa chisimbiso chakanaka.Zvishandiso zvinonyanya kubatwa nehunyoro pasi pemamiriro ekupisa, saka izvo zvakasara zvinofanirwa kuvharwa nekukurumidza mushure mekurongedza.Dzora hunyoro huri pasi pe0.02% panguva yekugadzirisa.
Nguva yekutumira: Aug-30-2023