汽车仪表罩模流分析报告.ppt

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1、1,原始的产品尺寸及特征(Part dimension&wall thickness),产品主体壁厚3.0mmThe thickness is uniform on the main part surface:3.0mm.,2,Preprocess and mesh statistics,网格统计Mesh statistics,产品1出1One mold with one cavity.,产品网格为双层面,3,Material Data,General:,Recommended Processing:,Rheology:,下图为 Hostacom EKC330N C3 C15207材料的属性。

2、,PVT properties:,产品材料信息,4,Runner system layout,Hot runner system layout,One mold with one cavity.,热流道系统进胶示意,A,B,5,Process Setting参数设置,6,Simulation results list,Fill timeFill time(contour)Weld Lines Location Air Traps LocationPressure at V/P switchoverPressure at the end of fillFlow Front TempShear R

3、atePressure at injection locationClamp ForceVolumetric shrinkage at ejectionDeflection(all deflection cause)Conclusions and suggestions,7,Fill time,Fill time,按住Shift+F5播放动画Play animation:Shift+F5,产品填充时间为2.894s,填充较平衡。Fill time is2.894s,and its balanced.,8,Fill time,Fill time(contour),无滞留痕和短射现象Theres

4、no hesitation mark and short shot phenomenon in filling phase.,9,Weld Lines,Weld Lines Location,COMMENT:The areas highlighted in multicolor are the places where weld lines maybe appears.If the meeting angle of weld line is less than 135 degrees,the weld lines maybe seen by man eyes.Weld lines can ca

5、use structural problems,and they can also make the part visually unacceptable.However,some weld lines are unavoidable,so you need to look at the processing conditions and the weld line position to decide if the weld lines will be of a high quality.Weld line strength is influenced by the temperature

6、at which the weld line is formed.,表面主要熔接线入红圈所示,10,Air Traps,Air Traps Location,COMMENT:The areas highlighted in pink are the places where air traps maybe happen.When designing a mold,these areas should be paid more attention as possible.An air trap will cause a burn mark if the air is under enough p

7、ressure,causing the air to ignite and burn the plastics.If an air trap is not vented,and it is not compressed fast enough to cause a burn mark,it may cause a short shot,or leave bubbles of air or gas in the part.Even if an air trap does not cause a burn mark or short shot,it can still leave a surfac

8、e blemish on the part.,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We should make gas venting where air traps locate,otherwise it will appear short shot phenomenon or even burn product.,11,Pressure at V/P switchover,The V/P switchover time is at 2.82s,when the part volume is filled at 99%The V/P pressure is 65.02MP

9、a.It is suitable for molding.,Pressure distribution,12,Pressure at the end of fill,Pressure at the end of fill,COMMENT:The difference between max.and min.value in the press distribution on the part is about 40Mpa.,如图所示,填充末端压力分布均匀As picture shown,the distribution of the pressure at end of fill is uni

10、form.,13,Flow Front Temp,Flow Front Temp picture,由图可知,产品表面温度在30以内,分布均匀,表面质量一般。As picture shown,the distinction of flow front temperature on the main surface is between 30。,14,Shear Rate,Shear Rate,COMMENT:The shear rate is uniform on the part,It doesnt exceed max value on the gate location.the limit

11、 value is 100000 1/s.,由图可知,剪切速率在材料允许范围内。As picture shown,shear rate value is under material limit value,15,System Pressure,System Injection Pressure XY Plot(Taken at machine Nozzle),最大注射压力:65.02MPaMax.injection pressure:65.02MPa,16,Clamp Force,Clamp Force XY Plot,最大锁模力:167Ton,锁模力受型腔内压力影响较大。Max.Clamp

12、 force:167Ton,17,Volumetric shrinkage at ejection,Volumetric shrinkage at ejection,18,Deflection,Deflection picture,all effects: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,Deflection picture,all effects:X Component,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,Deflect

13、ion picture,all effects:Y Component,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,Deflection picture,all effects:Z Component,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;The filling pattern is balanced and no hesitation mark and short shot phenomenon;2.压力理想,有利于填充;The injection

14、 pressure is reasonable,and is good for molding;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;Air traps mainly locate the positions of ribs,clips,parting surface and the end of fill,we should vent gas by mold gap;4.注射压力合理;Injection pressure is reasonable;5.锁模力合理;The clamp force is reasonable.,Conclusion and suggestion,

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