汽车仪表罩模流分析报告.ppt

1 原始的产品尺寸及特征 partdimension wallthickness 产品主体壁厚3 0mmthethicknessisuniformonthemainpartsurface 3 0mm 2 preprocessandmeshstatistics 网格统计meshstatistics 产品1出1onemoldwithonecavity 产品网格为双层面 3 materialdata general recommendedprocessing rheology 下图为hostacomekc330nc3c15207材料的属性 pvtproperties 产品材料信息 4 runnersystemlayout hotrunnersystemlayout onemoldwithonecavity 热流道系统进胶示意 a b 5 processsetting参数设置 6 simulationresultslist filltimefilltime contour weldlineslocationairtrapslocationpressureatv pswitchoverpressureattheendoffillflowfronttempshearratepressureatinjectionlocationclampforcevolumetricshrinkageatejectiondeflection alldeflectioncause conclusionsandsuggestions 7 filltime filltime 按住shift f5播放动画playanimation shift f5 产品填充时间为2 894s 填充较平衡 filltimeis2 894s andit sbalanced 8 filltime filltime contour 无滞留痕和短射现象there snohesitationmarkandshortshotphenomenoninfillingphase 9 weldlines weldlineslocation comment theareashighlightedinmulticoloraretheplaceswhereweldlinesmaybeappears ifthemeetingangleofweldlineislessthan135degrees theweldlinesmaybeseenbymaneyes weldlinescancausestructuralproblems andtheycanalsomakethepartvisuallyunacceptable however someweldlinesareunavoidable soyouneedtolookattheprocessingconditionsandtheweldlinepositiontodecideiftheweldlineswillbeofahighquality weldlinestrengthisinfluencedbythetemperatureatwhichtheweldlineisformed 表面主要熔接线入红圈所示 10 airtraps airtrapslocation comment theareashighlightedinpinkaretheplaceswhereairtrapsmaybehappen whendesigningamold theseareasshouldbepaidmoreattentionaspossible anairtrapwillcauseaburnmarkiftheairisunderenoughpressure causingtheairtoigniteandburntheplastics ifanairtrapisnotvented anditisnotcompressedfastenoughtocauseaburnmark itmaycauseashortshot orleavebubblesofairorgasinthepart evenifanairtrapdoesnotcauseaburnmarkorshortshot itcanstillleaveasurfaceblemishonthepart 气穴产生处 应当开排气 否则轻则出现短射 重则会烧焦产品weshouldmakegasventingwhereairtrapslocate otherwiseitwillappearshortshotphenomenonorevenburnproduct 11 pressureatv pswitchover thev pswitchovertimeisat2 82s whenthepartvolumeisfilledat99 thev ppressureis65 02mpa itissuitableformolding pressuredistribution 12 pressureattheendoffill pressureattheendoffill comment thedifferencebetweenmax andmin valueinthepressdistributiononthepartisabout40mpa 如图所示 填充末端压力分布均匀aspictureshown thedistributionofthepressureatendoffillisuniform 13 flowfronttemp flowfronttemppicture 由图可知 产品表面温度在30 以内 分布均匀 表面质量一般 aspictureshown thedistinctionofflowfronttemperatureonthemainsurfaceisbetween30 14 shearrate comment theshearrateisuniformonthepart itdoesn texceedmaxvalueonthegatelocation thelimitvalueis1000001 s 由图可知 剪切速率在材料允许范围内 aspictureshown shearratevalueisundermateriallimitvalue 15 systempressure systeminjectionpressurexyplot takenatmachinenozzle 最大注射压力 65 02mpamax injectionpressure 65 02mpa 16 clampforce clampforcexyplot 最大锁模力 167ton 锁模力受型腔内压力影响较大 max clampforce 167ton 17 volumetricshrinkageatejection volumetricshrinkageatejection 18 deflection deflectionpicture alleffects deflection 产品总的变形如上图所示 以上变形量包括产品的收缩 产品尺寸450 235 228 19 deflection deflectionpicture alleffects xcomponent 产品x变形如上图所示 以上变形量包括产品的收缩 产品尺寸450 235 228 20 deflection deflectionpicture alleffects ycomponent 产品y变形如上图所示 以上变形量包括产品的收缩 产品尺寸450 235 228 21 deflection deflectionpicture alleffects zcomponent 产品z变形如上图所示 以上变形量包括产品的收缩 产品尺寸450 235 228 22 1 填充平衡 无短射滞留现象 thefillingpatternisbalancedandnohesitationmarkandshortshotphenomenon 2 压力理想 有利于填充 theinjectionpressureisreasonable andisgoodformolding 3 困气主要分布在筋位 卡扣 分型面 填充末端等位置 可由模具结构间隙排气 airtrapsmain