Abstract
The design of a cooling channel system in an injection mould is key to successful production. Locally controlled heat removal is targeted by introducing disturbances inside the cooling channel using so called turbulators. Computational fluid dynamic simulations show different levels of heat removal depending on the shape and configuration of the turbulators, but also an increased pressure drop. Suitable turbulators are then introduced into the cooling channel of an injection mould insert. Within the scope of a design of experiments, no significant influence of the turbulators can be identified with regard to part warpage. However, an effect analysis indicates that the temperature of the thermal fluid has a major influence if using turbulators and that solidification is more homogeneous.
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