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شركت ملي صنايع پتروشيمي شركت پژو هش و فناوري پتروشيمي (سهامي خاص) گروه پژو هشهاي مشتري محور - PowerPoint PPT Presentation


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شركت ملي صنايع پتروشيمي شركت پژو هش و فناوري پتروشيمي (سهامي خاص) گروه پژو هشهاي مشتري محور. عيب يابي قطعات تزريقي پلاستيك ها و طراحي قالب با استفاده ازنرم افزار. Mold Flow. تهيه كننده : الهام زينالي. Exit. فهرست. مقدمه. مشخصات مورد نياز قبل از شروع آناليز.

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شركت ملي صنايع پتروشيمي شركت پژو هش و فناوري پتروشيمي (سهامي خاص) گروه پژو هشهاي مشتري محور

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( )

Mold Flow

:

Exit


Mold Flow


Mold Flow . :

.

.

.

.

.

.

.

.

.

Hot runner Cold runner.


finite-element , finite-differencecontrol-volume . Hewle-Shaw .

Autocad,Solidworks,Solidage,Ansys ... .

. .


1-

... . 7276 Dow ,Bayer ,Basel l,Sabic ,LG,DuPont ,Solvay ,Shell ,Borealis ,BASF ... .


2-

Midplane Mesh

. Midplane .


Surface Mesh

Fusion . .

Volume mesh

(3D) . 4 .


3-

.

4-

(clamp force) .


5-

. .

Gate Location .


6-

:

Gat Location

Fiber

Shrink

Flow

Design of Experiment

Molding Window

Process Optimization

Cool

Stress

Warp

Runner Balance


Gate Location

() .


Flow

.

:

.

.

.

, .

.

.

.


:

Air traps

Frozen layer fraction

Shear rate

Bulk temperature

Grow from

Shear rate,bulk

Clamp force

In-cavity residual stress

Temperature

Clamp force centroid

Orientation at core skin

Temperature at flow front

Average velocity

Throughput

Pressure

Density

Viscosity

Pressure at V/P switch-over

Volumetric shrinkage

Extension rate

Recommended ram speed

Fill time

Weld & Meld line

Sink index & Sink mark depth

Flow rate

Shot weight

Total weight

Freeze time


Molding Window

.


Cooling

. .

.

.

.

.

( ...) .


:

Average temperature,cold runner

Maximum temperature,cold runner

Average temperature,part

Maximum temperature,part

Cycle time

Maximum temperature position,part

Circuit coolant temperature

Molten layer at specified time

Circuit flow rate

Temperature,insert

Circuit metal temperature

Temperature,part

Circuit pressure

Temperature difference,part

Circuit Reynolds Number

Temperature profile,part

Cold runner top percent frozen layer

Time to freeze,part

Frozen layer at specified time


warpage

.

:

.

.

.

.

.

.

.


:

Thermoplastics Injection Molding

Gas-Assisted Injection Molding

Co-Injection Molding

Injection-Compression Molding

Reactive Molding

RTM and SRIM

Microchip Encapsulation

Und fill Encapsulation (flip chip)


:

Isotropic shrinkage

Deflection

Mode shape

Bending curvature

Stress related results

Material orientation

Anisotropic shrinkage

: Mode shape .


Runner Balance:

:

.

.

.


  • Fiber

  • MPI/Fiber / .

  • .

  • .

  • .

  • Poissons Ratio.

  • .


:

Average fiber orientation

Fiber orientation tensor

Linear thermal expansion coefficient,first direction

Linear thermal expansion coefficient,second direction

Poisson's ratio

Shear modulus

Tensile modulus, first and second principal direction

Flow .


  • shrinkage

  • :

  • .

  • .

  • .


DOE (Design of Experiment):

, :

mold/melt temperature

injection/packing time

thickness multiplier

injection/packing profile multiplier

:


:

flow front temperature shear stress

injection pressure clamp force

volumetric shrinkage sink mark depth

part weight cycle time

10 . 1 10 .


:

Bulk temperature (end of filling)

Part quality

Part weight

Clamp tonnage

Cycle time

Pressure (end of filling)

Fill time

Shear stress

Flow front temperature

Volumetric shrinkage (end of process)

Injection pressure

Volumetric shrinkage variation


Optimization

, .

:

Flow front area vs time

Ram velocity vs time

Percentage flow rate vs percentage

Percentage of part frozen vs time

Ram position vs time

Flow analysis results

Ram velocity vs ram position

volume filled


Mold Flow


Flash

Shrinkage

Weld & Meld Line

Warpage

Jetting

Hesitation

Fish Eyes

Air Trap

Short shot

Discoloration

Cracking

Flow marks

Brittleness

Sink mark & Void

Delamination

Burn marks


  • Shrinkage

  • : ( ) .

  • :

  • .

  • .

  • .

    :

  • ( ).

  • ( ).

  • .


Warpage

: (shrinkage) .

:

: .

: .

.

.


:

.

.

( rib ).

: .


Hesitation

: Hesitation . rib . . .


  • :

  • .

  • .

  • .

  • .

  • :

  • .

  • .

  • .

  • .

  • .


Air Trap

: .


  • :

  • : .

  • .

  • .

  • .

  • :

  • .

  • .

  • .

  • .

  • .


Short shot

: .

:

Flow restrictions:

.

Hesitation

.

.

shot.

hopper valve .

.


:

Hesitation .

.

.

.

.

.


Cracking

: Cracking .

:

.

.

.

:

.

.

.


Brittleness

: Brittleness .

:

.

.

.

.

.

.


:

( .)

.

.( " .)

.

.

.

.

(" )


  • Delamination

  • : .

  • :

  • .

  • .

  • (release agent ).

  • .

  • .

  • .

  • :

  • .

  • .

  • .

  • .

  • .


Flash

: Flash.

:

" .

(clamping force) .

.

.

Overpacking: Overpacking . . .


:

.

.

.

.

.

.

.


Weld & Meld Line

: . .

135 Weld line 135 Meld line .

Weld line

Meld line


  • :

  • .

  • .

  • .

  • :

  • .

  • .

  • .

  • .


Jetting

: .

:

.

.

.

:

.

.

.


  • Fish Eyes

  • : .

  • :

  • .

  • .

  • .

  • .

  • :

  • .

  • .

  • .


  • Discoloration

  • : .

  • :

  • .

  • .

  • .

  • :

  • .

  • .

  • .

  • .


  • Flow marks

  • : " .

  • :

  • .

  • .

  • .

  • :

  • cold slug .

  • .

  • .

  • .


Sink mark & Void

: . " . .

:

.

packing .

.

packing.

.


:

.

.

packing.

.

.

.


  • Burn marks

  • : .

  • :

  • : .

  • .

  • .

  • .

  • :

  • .

  • .

  • .

  • .

  • .


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