Plastics Analysis Solutions for Automotive Applications
Imtech have analysed hundreds of automotive mouldings over the years including exterior fascias, interior door, luggage, instrument panels and mouldings for under bonnet applications.
Automotive production techniques are often at the forefront of technological development and Imtech has been active in aiding the development of many advanced systems.
Bumper systems
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Polypropylene bumper systems are a good case in point, over the last 10 to 15 years moving from painted multi feed tools to large film gates and now sequential feed hot runner systems .
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Interior Panels
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The use of sequential injection has also seen a reduction in the requirement to paint and now the addition of complex integral detail such as speaker grilles and air bag doors is common place. Some interior panels now incorporate thick feel gas injected door pockets and thin speaker grille sections eliminating the need for several mouldings.
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Under Body Mouldings
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Large Under Body mouldings are normally produced as thin as possible, resulting in high pressure and clamp force. Sophisticated feed systems and smart wall thickness profiles are used to reduce pressure and clamp force to achieve the most economical production.
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Capability:
- Fill time
- Injection pressure
- Pressure at transfer
- Melt-front temperature
- Bulk temperature
- Weld lines
- Air traps
- Shear rate / Shear stress
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- Volumetric shrinkage
- Pressures
- Temperatures
- Velocity
- Freeze times
- Accurate clamp force prediction
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- Cavity surface temperature distribution
- Distribution of temperature differences across opposite surfaces of the cavity
- Distribution of average plastic temperature at ejection time
- Distribution of maximum plastic temperature at ejection time
- Relative position of the peak temperature at ejection time
- Distribution of frozen layer thickness
- Temperature profile through thickness for each cavity element
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- Surface temperature distribution on both sides of inserts and
parting planes
- Distribution of temperature difference across insert and joint line surfaces
- Temperature of mold external surfaces and surface of cooling circuits
- Pressure drop along each cooling circuit
- Variation in coolant temperature through each cooling circuit
- Flow rate in each cooling circuit
- Reynolds number in each cooling circuit
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-Total deformation
-Deflection in the X-, Y-, and Z-directions
-Deflection history at any node
-Deflected component shape with exaggeration factor
-Buckling mode shape
-Elemental parallel and perpendicular shrinkage
-Elemental principal residual stress
-Elemental Mises-Hencky stresses
-Elemental maximum shear stress
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