Asayansi ku Michigan Technology University, Houghton akwanitsa kupanga 3D matabwa ulusi wosindikiza kuchokera ku zinyalala zamatabwa.
Kupambanaku kudasindikizidwa mu pepala lofufuza lomwe linalembedwa ndi katswiri wotsegulira gwero Joshua Pearce.Pepalalo lidafufuza kuthekera kokweza zinyalala za mipando kukhala ulusi wamatabwa kuti muchepetse kuwonongeka kwa chilengedwe ndi zinyalala zamatabwa.
Malinga ndi pepalali, makampani opanga mipando ku Michigan mokha amatulutsa zinyalala zamatabwa zopitirira matani 150 patsiku.
Mu njira zinayi, asayansi adawonetsa kuthekera kopanga 3D yosindikiza nkhuni ulusi wophatikizika wa zinyalala zamatabwa ndi pulasitiki ya PLA.Kusakaniza kwa zinthu ziwirizi kumadziwika bwino kuti nkhuni-pulasitiki-composite (WPC).
Pachiyambi choyamba, zinyalala zamatabwa zidapezedwa kuchokera kumakampani osiyanasiyana opanga mipando ku Michigan.Zinyalalazo zinaphatikizapo ma slabs olimba ndi utuchi wa MDF, LDF, ndi melamine.
Ma slabs olimba awa ndi utuchi adachepetsedwa kukhala yaying'ono pang'ono pokonzekera ulusi wa WPC.Zinyalalazo zinkagayidwa ndi nyundo, kuzigwetsa mu thabwa la nkhuni ndikusefa pogwiritsa ntchito chipangizo chodulira mpweya chogwedera, chomwe chinkagwiritsa ntchito sifita ya ma micron 80.
Pamapeto pa ndondomekoyi, zinyalala za nkhuni zinali zaufa ndi gawo la ufa wa tirigu.Zinthuzo tsopano zimatchedwa "ufa wotayirira nkhuni."
Mu sitepe yotsatira, PLA inakonzedwa kusakaniza ndi nkhuni-zinyalala ufa.Ma pellets a PLA adatenthedwa pa 210C mpaka atayamba kugwedezeka.Ufa wa nkhuni unawonjezeredwa ku kusakaniza kwa PLA kosungunuka ndi nkhuni zosiyanasiyana ku chiwerengero cha kulemera kwa PLA (wt%) pakati pa 10wt% -40wt% ufa wa nkhuni.
Zinthu zolimbazo zinayikidwanso mu chopichira matabwa kuti akonzekerere poyera gwero recyclebot, pulasitiki extruder kupanga ulusi.
Ulusi wopangidwa unali 1.65mm, woonda m'mimba mwake kuposa ulusi wa 3D womwe umapezeka pamsika, mwachitsanzo 1.75mm.
Ulusi wa matabwawo ankauyesa popanga zinthu zosiyanasiyana, monga thabwa la matabwa, nsonga ya chitseko, ndi chogwirira cha kabati.Chifukwa cha makina opangidwa ndi matabwa a matabwa, kusintha kunapangidwa ku Delta RepRap ndi Re: 3D Gigabot v. GB2 3D osindikiza omwe amagwiritsidwa ntchito pophunzira.Zosinthazo zidaphatikizanso kusintha kwa extruder ndikuwongolera liwiro la kusindikiza.
Kusindikiza nkhuni pa kutentha koyenera ndi chinthu chofunikiranso chifukwa kutentha kumatha kutenthetsa nkhuni ndikutseka mphuno.Pankhaniyi, ulusi wamatabwa udasindikizidwa pa 185C.
Ofufuzawo anasonyeza kuti zinali zothandiza kupanga ulusi wamatabwa pogwiritsa ntchito zinyalala zamatabwa.Komabe, iwo anadzutsa mfundo zazikulu za phunziro lamtsogolo.Izi zinaphatikizapo zovuta zachuma ndi zachilengedwe, tsatanetsatane wa katundu wamakina, kuthekera kwa kupanga mafakitale.
Pepalalo linamaliza kuti: “kafukufukuyu wasonyeza njira yothandiza mwaukadaulo yokwezera zinyalala zamatabwa zamatabwa kukhala zigawo zosindikizidwa za 3-D zamakampani opanga mipando.Mwa kusakaniza PLA pellets ndi zobwezerezedwanso nkhuni zinyalala zakuthupi filament opangidwa ndi kukula kwake kwa 1.65±0.10 mm ndi ntchito kusindikiza yaing'ono zosiyanasiyana mbali mayeso.Njirayi ikapangidwa mu labu ikhoza kukulitsidwa kuti ikwaniritse zosowa zamakampani chifukwa masitepewa ndi ovuta.Magulu ang'onoang'ono amitengo ya 40wt% adapangidwa, koma adawonetsa kuchepa kubwereza, pomwe magulu amitengo 30wt% adawonetsa lonjezo losavuta kugwiritsa ntchito.
Pepala lofufuzira lomwe lafotokozedwa m'nkhaniyi latchedwa Wood Furniture Waste-Based Recycled 3-D Printing Filament.Linalembedwa ndi Adam M. Pringle, Mark Rudnicki, ndi Joshua Pearce.
Kuti mumve zambiri zakukula kwaposachedwa pakusindikiza kwa 3D, lembetsani kutsamba lathu losindikiza la 3D.Komanso tigwirizane nafe pa Facebook ndi Twitter.
Nthawi yotumiza: Feb-07-2020