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Gating System Design Optimization for Investment Casting Process

  • Marek BrunaEmail author
  • Dana Bolibruchová
  • Richard Pastirčák
  • Anna Remišová
Article

Abstract

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.

Keywords

casting and solidification gating system microscopy numerical simulation steel 

Notes

Acknowledgments

The article was created as part of the VEGA Grant Agency Project: 1/0706/18. The authors thank the agency for their support.

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Copyright information

© ASM International 2019

Authors and Affiliations

  • Marek Bruna
    • 1
    Email author
  • Dana Bolibruchová
    • 1
  • Richard Pastirčák
    • 1
  • Anna Remišová
    • 1
  1. 1.Department of Technological Engineering, Faculty of Mechanical EngineeringUniversity of ZilinaŽilinaSlovak Republic

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