Moldflow Analysis ReportMoldflow Analysis ReportMoldflow Analysis ReportMoldflow Analysis Report

CASE CASE CASE CASE AL3909 _ 20170606AL3909 _ 20170606AL3909 _ 20170606AL3909 _ 20170606

2020202017.0617.0617.0617.06

� 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 1.0969 g/cu.cm 2. Solid Density 1.0319 g /cu.cm 3. Ejection Temperature 125 deg.C 4. Recommended Mold Temperature 80 deg.C 5. Recommended Melt Temperature 305 deg.C 6. Absolute Max. Melt Temperature 355 deg.C

7. Melt Temperature Minimum 295.0 deg.C 8. Melt Temperature Maximum 315.0 deg.C 9. Mold Temperature Minimum 70.0 deg.C 10. Mold Temperature Maximum 95.0 deg.C 11. Maximum Shear Rate 40000.00 1/s 12. Maximum Shear Stress 0. 500 MPa

Viscosity model

PVT profile

PCPCPCPC Lexan SLX1432 : SABIC Innovative Plastics US, LLC

In software can’t find the grade of material, so we choose a near 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.

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

1x1 cavities， two plates mold, Cold runner +sub gate, the size is shown by picture.

sub gate 1.5mm

Cold sprue 4-+mm

Cold runner 6mm

Cold runner 6mm

Cooling System Design

The cooling system is shown by picture, the diameter of channel is 10mm, the diameter of bafflers is 13

mm.

Processing condit ions

PRESSURE [MPa] STEP DURATION [sec]

94.5 0.0

94.5 10.0

Filling Conditions :

Mold temperature : 80.00 deg.C

Melt temperature : 305.00 deg.C

Injection time 1.6sec

Cooling Conditions:

Coolant Temperature(Cavity) 80 deg.C

Coolant Temperature(Core) 80 deg.C

Packing Profile :

Circuit coolant Temperature

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

Temperature (bottom), part

• The temperature variation over each mold face should be more than 10°C, because the part is too deep. Otherwise it may bring negative effect on deflection.

• The distribution of temperature over mold faces is uneven, It is under of the range .

Fill time

Shown by picture the fill time is 1.6s and the flow status is

balance.

Fill time

Shown by picture the fill time is 1.6s and the flow status is

balance.

Fill time series

Pressure at V/P switchover

• The result shows the pressure distribution through the flow path inside the mold at the switchover point from

velocity to pressure control.

• The filling is balance and the pressure at V/P switchover is about 114.4 MPA. The main pressure losing is

through the runner , about 53.9 MPA .Considering the part is not a small one, both pressure value are low and

acceptable.

.

Temperature at flow front

Temperature at flow front is balance shown by picture.

Air traps

• The air trap shown in purple plots and occur in the end of filling. Vents or inserts are

required near the air trap location to avoid part quality issues.

Air traps

• The air trap shown in purple plots and occur in the end of filling. Vents or inserts are

required near the air trap location to avoid part quality issues.

Weld lines

The color lines are possible weld lines.

Weld lines

The color lines are possible weld lines.

Volumetric shrinkage

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

king.

Sink marks estimate

• The sink marks may be visible when the estimate value＞0.07mm. The sink marks is not obvious. Adjust the packing time and packing pressure may improve the sink marks.

Injection Pressure & Clamp Force

Pressure at injection location Clamp Force

Max.: 114.4MPa Max.: 61.2tonne

Frozen series

Finish cooling, close cycle.

Deflection – All direction

Deflection of All direction is imbalance, possible cause warp.

Deflection – X direction

Deflection of X direction is imbalance, possible cause warp.

0.3mm

0.2mm

Deflection – X direction

Deflection of X direction is imbalance, possible cause warp.

0.3mm

0.2mm

Deflection – Y direction

Deflection of Y 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 balance, cause warp is little.

Deflection – Z direction

Deflection – Z direction is balance, cause warp is little.

S u m m a r y

The results：：：：

� The flow status is balance, the injection and packing pressure is normal.

� The volumetric shrinkage is imbalance, please attention the setting of packing.

� Deflection of Y&Z direction is balance, cause warp is little. Deflec

tion of X direction is imbalance, possible cause warp.

� The project cycle time: 1.6 (filling)+ 24.4(cooling + packing) + 5.0 (open & eject & close) =31.0 sec.