Development of a methodical approach to set-up the injection velocity profile dependent on the part geometry
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Christian Hopmann
Abstract
The injection volume rate is an important setting parameter of the injection moulding process as it determines local process parameters as melt front velocity, respectively, shear rate, pressure and temperature in the mould cavity. In order to avoid too low or too high melt front velocities, profiling of the injection volume rate during the injection is necessary dependent on the part geometry. However, the set-up of a volume rate profile at the machine is an iterative and subjective process so far. Therefore, a method is developed that determines a suitable volume rate profile based on the process simulation gaining a constant melt front velocity or melt front shear rate. A developed process model enables the transmission from simulation to the machine based on a volume rate balance in the screw antechamber. The simulative and experimental results show a good agreement of the cavity filling.
Funding source: AiF Projekt
Award Identifier / Grant number: 20935 N
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: The research project 20935 N of the Forschungsvereinigung Kunststoffverarbeitung was sponsored as part of “industrielle Gemeinschaftsforschung und -entwicklung (IGF)” by the German Bundesministerium für Wirtschaft und Klimaschutz (BMWK) due to an enactment of the German Bundestag through the AiF. We would like to extend our thanks to all organisations mentioned.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Material Properties
- Modification of natural pigskin collagen via cryogrinding: a focused study on its physiochemical properties
- Effects of nano-silica on the crystallization, structure, and mechanical properties of crosslinked ethylene-octene copolymer/nano-silica composites
- Preparation and Assembly
- Microencapsulation of polymeric phase change materials (MPCM) for thermal energy storage in industrial coating applications
- A waterborne uniform graphene oxide-epoxy complex with enhanced anticorrosive properties enabled by intercalation polymerization
- Engineering and Processing
- Development of a methodical approach to set-up the injection velocity profile dependent on the part geometry
- Development of variotherm extrusion blow molding technology to produce high-gloss automotive spoilers
- Fabrication, property characterization, and benefit analysis of mixing mechanism of nitrogen and melt, and its comparison of the porous-foam polypropylene injection molding parts
