The influence of flow and thermal properties on injection pressure and cooling time prediction

Abstract

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Highlights  An experimental and numerical case study for injection moulding is presented;  The effect of material properties for mould filling/cooling stages was studied;  True viscosity and no-flow temp. set to T g yielded accurate pressure estimation;  Thermal conductivity had negligible effect on pressure prediction;  Molten state heat capacity and thermal cond. gave best estimate for cooling time.

Computer Simulations of Injection Process of Elements Used in Electromechanical Devices

“…The production process requires constant supervision and quality control of products in relation to dimensional tolerance, dimensional stability (SPC), shape (without deformations and sags), workpiece weight tolerance, deformation strength, specific properties in terms of the assumed features of the detailed structure [ 9 , 13 , 14 , 15 , 17 ].…”

“…The most critical injection process parameters are temperature, pressure, and injection time. The selection of these parameters depends on the shape and size of the molded part, type and properties of the material used, the efficiency of the injection molding machine, and mold construction [ 13 , 14 , 15 , 16 , 17 , 18 ].…”

Multi-Scale Simulation of Injection Molding Process with Micro–Features Replication: Relevance of Rheological Behaviour and Crystallization

“…Generally, these approaches include the heat transfer coefficient, wall slip, and solidification, key factors in micro-filling [ 19 ]. The selection of an appropriate no-flow temperature, the temperature at which the viscosity dramatically increases and induces the flow to stop, is the critical issue in these approaches [ 20 ]. In most cases, the volume filled by the melt is overestimated due to poor characterization of the material.…”