20.500.12556/RUL-94946 Vpliv parametrov brizganja na maso in obliko neenakomerno hlajenih kosov Effect of injection molding parameters on weight and shape of non-uniform cooled parts V nalogi obravnavamo vpliv štirih parametrov brizganja na maso in deformacije izdelkov iz polietilena visoke gostote, ki se v orodju hladijo neenakomerno po celotnem volumnu. Izdelke smo brizgali pri 6 različnih kombinacijah parametrov. Pri vsaki kombinaciji parametrov smo izvedli meritve na vseh izdelkih (48 gnezdno orodje), dobljenih iz 5 ciklov brizganja. Izdelke smo tehtali in opravili meritve ustreznosti oblike, kjer smo določali kot nagiba izdelka. Ugotovili smo, da je masa brizganega izdelka odvisna od časa naknadnega tlaka in gnetilnega tlaka. Na nagib izdelkov pomembno vpliva čas hlajenja in čas faze naknadnega tlaka, medtem ko hitrost brizganja in gnetilni tlak nimata večjega vpliva. In final thesis the effect of 4 injection molding parameters on weight and curvature of HDPE parts which undergo non-uniform cooling in the mold has been studied. 6 different combinations of injection molding parameters were used for producing parts. At each combination of parameters all parts (48 cavity mold) from 5 injection molding cycles were measured. Products were weighed and measurements of curvature were performed on each molded part to determine angle of curvature. It was determined that weight of molded part depends on hold time and screw back pressure. Important influence on curvature of molded parts was found in cooling time and hold time, since bigger influence of injection speed and screw back pressure on curvature of parts wasn't detected. parametri brizganja polietilen visoke gostote temperaturne deformacije ohlajanje krčenje nagib temperiranje orodja injection molding parameters high-density polyethylene temperature deformations cooling shrinkage slope mold tempering true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2017-09-11 13:34:33 2017-09-11 13:34:34 2022-08-10 02:07:19 0000-00-00 00:00:00 2017 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 200059 896.pdf 896.pdf 1 B2D91C391BB568CD35FA7AFE851C7596 14629a8a7710fb42cf65a7a8212d817dea21b66a01887ba1c9eb8c066539732b a46102ea-a1b3-11eb-a523-00155dcfd717 20.500.12556/rul/7ef77086-4601-4ca1-af66-62ca36ab6905 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=103433 Fakulteta za strojništvo 0 0 0