Abstract
Venting of excess gas and air in casting moulds is of critical importance to avoid defects such as misruns and porosities. Additive manufacturing give mould designers a possibility to make venting slots in large areas and geometrically complex mould sections. The venting slots must be wide enough to allow air to escape, but narrow enough to restrict metal flowing into the venting slots. In this paper, an experiment was conducted to identify which process parameters cause metal penetration in venting slots in low-pressure die casting (LPDC). Parameters having the largest influence on the degree of penetration is found to be filling pressure and slot width. For a typical LPDC process a slot width of 0.14 mm is recommended.
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Acknowledgements
The authors thank the Research Council of Norway for supporting this work through the NextForm project, Grant No. 235241.
The authors thank Benteler Automotive Farsund AS for sponsoring the research presented in this paper in the form of providing access to LPDC machines and facilitating the execution of the experiments.
The authors thank Tronrud Engineering for supplying test disks 1 through 5, and Olav Åsebø Berg at SINTEF Raufoss Manufacturing AS for designing the test disks and supplying disks 6 through 10.
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Hovig, E.W., Sørby, K., Drønen, P.E. (2018). Metal Penetration in Additively Manufactured Venting Slots for Low-Pressure Die Casting. In: Wang, K., Wang, Y., Strandhagen, J., Yu, T. (eds) Advanced Manufacturing and Automation VII. IWAMA 2017. Lecture Notes in Electrical Engineering, vol 451. Springer, Singapore. https://doi.org/10.1007/978-981-10-5768-7_49
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DOI: https://doi.org/10.1007/978-981-10-5768-7_49
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