Moldflow Analysis Report

CASE Sunon_Lower_20140322

2017.3

To analysis original design, cooling and check flow , warp.

ANALYSIS AIMS

P l a s t i c M a t e r i a l I n t r o d u c t i o n

1. Melt Density 0.93839 g/cu.cm2. Solid Density 1.0541 g /cu.cm3. Ejection Temperature 85 deg.C4. Recommended Mold Temperature 60 deg.C5. Recommended Melt Temperature 250 deg.C6. Absolute Max. Melt Temperature 290 deg.C

7. Melt Temperature Minimum 230.0 deg.C8. Melt Temperature Maximum 270.0 deg.C9. Mold Temperature Minimum 40.0 deg.C

10. Mold Temperature Maximum 80.0 deg.C11. Maximum Shear Rate 50000.00 1/s12. Maximum Shear Stress 0.300 MPa

Viscosity model

PVT profile

ABS Cycolac GPM5500 : SABIC Innovative Plastics B.V.

The customer not supply the grade of material, so we choose a general material.

P a r t I n t r o d u c t i o n

The mostly wall thickness of part is imbalance shown by picture.

Cooling System Design

The cooling system is shown by picture, the diameter of channel is 8.0mm .

Case1

F e e d S ys t e m D e s i g n

1x2 cavities， three plates mold, Cold runner +Pin gate, the size is shown by picture.

Pin gate 1.4mm

Processing conditions

PRESSURE [MPa] STEP DURATION [sec]

65.7 0.0

65.7 10.0

Filling Conditions :

Mold temperature : 60.00 deg.C

Melt temperature : 250.00 deg.C

Injection time 1.3sec

Cooling Conditions:

Coolant Temperature(Cavity) 50 deg.C

Coolant Temperature(Core) 50 deg.C

Packing Profile :

Fill time

Shown by picture the flow status is imbalance, causeshort shot, because the gate close to the thin place.

Fill time

Shown by picture the flow status is imbalance, causeshort shot, because the gate close to the thin place.

Case2

F e e d S ys t e m D e s i g n

1x2 cavities， three plates mold, Cold runner +Pin gate, the size is shown by picture.

Pin gate 1.4mm

Processing conditions

PRESSURE [MPa] STEP DURATION [sec]

60.3 0.0

60.3 10.0

Filling Conditions :

Mold temperature : 60.00 deg.C

Melt temperature : 250.00 deg.C

Injection time 1.7sec

Cooling Conditions:

Coolant Temperature(Cavity) 50 deg.C

Coolant Temperature(Core) 50 deg.C

Packing Profile :

Fill time

Shown by picture the flow status is imbalance, causeshort shot, because the gate close to the thin place.

Fill time

Shown by picture the flow status is imbalance, causeshort shot, because the gate close to the thin place.

Case3

F e e d S ys t e m D e s i g n

1x2 cavities， three plates mold, Cold runner +Pin gate, the size is shown by picture.

Pin gate 1.4mm

Processing conditions

PRESSURE [MPa] STEP DURATION [sec]

79.0 0.0

79.0 10.0

Filling Conditions :

Mold temperature : 60.00 deg.C

Melt temperature : 250.00 deg.C

Injection time 1.3sec

Cooling Conditions:

Coolant Temperature(Cavity) 50 deg.C

Coolant Temperature(Core) 50 deg.C

Packing Profile :

Circuit coolant Temperature

The circuit coolant temperature of part is balance shown by picture.

Temperature (top),part

Top temperature of part is balance shown by picture.

Temperature (bottom),part

Bottom temperature of part is balance shown by picture.

Fill time

Shown by picture the flow status is balance.

Fill time

Shown by picture the flow status is balance.

Fill time series

Pressure at V/P switchover

The pressure at V/P switchover is 98.7 MPa .

Temperature at flow front

Temperature at flow front is imbalance shown by picture.

Air traps

The magenta circles are possible air traps shown by picture，please attention venting.

Weld lines

The color lines are possible weld lines.

Volumetric shrinkage

Volumetric shrinkage is imbalance show by picture, please attention the setting of packing.

Sink marks estimate

The Sink marks estimate is imbalance show by picture, please attention the setting of packing.

Frozen layer Fraction

Injection Pressure & Clamp Force

Pressure at injection location Clamp Force

Max.: 98.7MPaMax.:63.4Ton

Deflection – All direction

Deflection of All direction is imbalance, possible cause warp.

Deflection – X direction

Deflection of X direction is balance, cause warp is little.

Deflection – Y direction

Deflection of Y direction is balance, cause warp is little.

Deflection – Z direction

Deflection – Z direction is imbalance, possible cause warp.

S u m m a r y

The results：

The flow status is balance, the injection and packing pressure is no

rmal.

The volumetric shrinkage is imbalance, please attention the sett

ing of packing.

Deflection of X&Y direction is balance, cause warp is little. Defle

ction of Z direction is imbalance, possible cause warp.