Gating System Design Optimization for Investment Casting Process

This article aims to optimize specific castings, characterized as an element of the continuous track for armored vehicle. During the primary melts, defects in the form of oxide films and shrinkage porosity occurred. Steel 20ChGSNM described by the Russian GOST standard was used as a batch material,...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2019-07, Vol.28 (7), p.3887-3893
Main Authors: Bruna, Marek, Bolibruchová, Dana, Pastirčák, Richard, Remišová, Anna
Format: Article
Language:English
Subjects:
CASTINGS
Characterization and Evaluation of Materials
Chemistry and Materials Science
COMPUTERIZED SIMULATION
Corrosion and Coatings
DEFECTS
ENGINEERING
Engineering Design
INVESTMENT
MATERIALS SCIENCE
OPTIMIZATION
OXIDES
PARTICLE TRACKS
Quality Control
Reliability
Safety and Risk
Tribology
X RADIATION
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Summary:This article aims to optimize specific castings, characterized as an element of the continuous track for armored vehicle. During the primary melts, defects in the form of oxide films and shrinkage porosity occurred. Steel 20ChGSNM described by the Russian GOST standard was used as a batch material, and the investment casting method was selected for production. To eliminate the above-mentioned defects, only changes in the gating system were allowed, because the interference with an ongoing production regarding technical and technological parameters was unacceptable by the manufacturer. Numerical simulation, x-ray, macro-structural and micro-structural analysis were used during the optimization process. The three variants were analyzed, and the achieved results demonstrated that it is possible to significantly affect the casting internal homogeneity by modifying the gating system individual parts. The final variant ensured a decrease in defects by up to 90% and the production of casting having the quality required by the customer.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-019-03933-3