Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Development of Ternary Inorganic Binder System for Manufacturing High-Functional Ceramic Molds and Core

고기능성 세라믹 주형 및 중자 제작을 위한 3원계 무기 바인더 시스템 개발

  • Hye-Yeong, Park (Mechatronics Research Center, Changwon National University) ;
  • Geun-Ho, Cho (Mechatronics Research Center, Changwon National University) ;
  • Hyun-Hee, Choi (Mechatronics Research Center, Changwon National University) ;
  • Bong Gu, Kim (Department of Materials Convergence and System Engineering, Changwon National University) ;
  • Eun-Hee, Kim (Mechatronics Research Center, Changwon National University) ;
  • SeungCheol, Yang (Department of Materials Convergence and System Engineering, Changwon National University) ;
  • Yeon-Gil, Jung (Department of Materials Convergence and System Engineering, Changwon National University)
  • 박혜영 (창원대학교 메카트로닉스연구원) ;
  • 조근호 (창원대학교 메카트로닉스연구원) ;
  • 최현희 (창원대학교 메카트로닉스연구원) ;
  • 김봉구 (창원대학교 소재융합시스템공학과) ;
  • 김은희 (창원대학교 메카트로닉스연구원) ;
  • 양승철 (창원대학교 소재융합시스템공학과) ;
  • 정연길 (창원대학교 소재융합시스템공학과)
  • Received : 2022.10.21
  • Accepted : 2022.12.09
  • Published : 2022.12.27
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Abstract

In existing ceramic mold manufacturing processes, inorganic binder systems (Si-Na, two-component system) are applied to ensure the effective firing strength of the ceramic mold and core. These inorganic binder systems makes it possible to manufacture a ceramic mold and core with high dimensional stability and effective strength. However, as in general sand casting processes, when molten metal is injected at room temperature, there is a limit to the production of thin or complex castings due to reduced fluidity caused by the rapid cooling of the molten metal. In addition, because sodium silicate generated through the vitrification reaction of the inorganic binder is converted into a liquid phase at a temperature of 1,000 ℃. or higher, it is somewhat difficult to manufacture parts through high-temperature casting. Therefore, in this study, a high-strength ceramic mold and core test piece with effective strength at high temperature was produced by applying a Si-Na-Ti three-component inorganic binder. The starting particles were coated with binary and ternary inorganic binders and mixed with an organic binder to prepare a molded body, and then heat-treated at 1,000/1,350/1,500 ℃ to prepare a fired body. In the sample where the two-component inorganic binder was applied, the glass was liquefied at a temperature of 1,000 ℃ or higher, and the strength decreased. However, the firing strength of the ceramic mold sample containing the three-component inorganic binder was improved, and it was confirmed that it was possible to manufacture a ceramic mold and core via high temperature casting.

Keywords

Acknowledgement

This research was supported by Changwon National University in 2021~2022.

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