Possibility of Utilization of Gate Geometry to Modify the Mechanical and Structural Properties of Castings on the Al-Si Basis

Majernik, Jan; Gaspar, Stefan; Kmec, Jan; Karkova, Monika; Mascenik, Jozef

doi:10.3390/ma13163539

Open AccessArticle

Possibility of Utilization of Gate Geometry to Modify the Mechanical and Structural Properties of Castings on the Al-Si Basis

by

Jan Majernik

^1,*,

Stefan Gaspar

²,

Jan Kmec

¹

,

Monika Karkova

¹

and

Jozef Mascenik

²

¹

Institute of Technology and Business in České Budějovice, Okružní 517/10, 37001 České Budějovice, Czech Republic

²

Department of Technical Systems Design and Monitoring, Faculty of Manufacturing Technologies with Seat in Prešov, Technical University of Košice, Bayerova 1, 08001 Prešov, Slovakia

^*

Author to whom correspondence should be addressed.

Materials 2020, 13(16), 3539; https://doi.org/10.3390/ma13163539

Submission received: 3 July 2020 / Revised: 22 July 2020 / Accepted: 9 August 2020 / Published: 11 August 2020

(This article belongs to the Special Issue Mechanical Properties of Technical Materials)

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Abstract

The mechanical properties of die castings correlate with the inner structure of a casting, distribution of the eutectic phases, and with the content and distribution of porous cavities in the casting volume. This submitted paper deals with the issue of the possibility to influence the basic parameters affecting the quality of castings through structural modifications of the gating system. The structural parameter under assessment is the gate height. In the case of the diverse height of the gate, five sets of castings were produced. The individual sets of castings were subjected to examination of selected mechanical properties, i.e., of permanent deformation and surface hardness. At the same time, the individual sets of castings were subjected to metallographic examination of the eutectic structure of the casting. It was proved that the gate height influences the aforementioned properties of the castings and significantly affects the ratio of the eutectic phases in the volume of the casting. The conclusion describes the mutual correlation between the gate structure, the mechanical properties of the casting, and its structural composition.

Keywords: HPDC; aluminum alloys; modification of structure

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MDPI and ACS Style

Majernik, J.; Gaspar, S.; Kmec, J.; Karkova, M.; Mascenik, J. Possibility of Utilization of Gate Geometry to Modify the Mechanical and Structural Properties of Castings on the Al-Si Basis. Materials 2020, 13, 3539. https://doi.org/10.3390/ma13163539

AMA Style

Majernik J, Gaspar S, Kmec J, Karkova M, Mascenik J. Possibility of Utilization of Gate Geometry to Modify the Mechanical and Structural Properties of Castings on the Al-Si Basis. Materials. 2020; 13(16):3539. https://doi.org/10.3390/ma13163539

Chicago/Turabian Style

Majernik, Jan, Stefan Gaspar, Jan Kmec, Monika Karkova, and Jozef Mascenik. 2020. "Possibility of Utilization of Gate Geometry to Modify the Mechanical and Structural Properties of Castings on the Al-Si Basis" Materials 13, no. 16: 3539. https://doi.org/10.3390/ma13163539

APA Style

Majernik, J., Gaspar, S., Kmec, J., Karkova, M., & Mascenik, J. (2020). Possibility of Utilization of Gate Geometry to Modify the Mechanical and Structural Properties of Castings on the Al-Si Basis. Materials, 13(16), 3539. https://doi.org/10.3390/ma13163539

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Possibility of Utilization of Gate Geometry to Modify the Mechanical and Structural Properties of Castings on the Al-Si Basis

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