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A study on the ideal structure of feed sprue in the investment casting process

정밀주조 프로세스에서 피드 스프루의 이상적 구조에 관한 연구

  • 이광열 (한국폴리텍여자대학 주얼리디자인과)
  • Received : 2012.02.16
  • Accepted : 2012.03.09
  • Published : 2012.04.30

Abstract

Maintenance training is generally provided to teach employees new knowledge and techniques in order to increase their qualities. It means that the purpose of maintenance training is to increase an employee's knowledge or technique level and to maintain or increase their performance level through continuous training in their field, and the methods, contents and the level of training vary depending on the type of job they perform. Maintenance training is more important for jobs that require continuous technical increases or research, or for professional jobs that continuously require new knowledge and techniques. The purpose of this study is to provide quality service to consumers by responding to the rapidly changing jewelry distribution environment and to quickly and accurately acquire new and advanced jewelry inspection and appraisal techniques, and to contribute to the healthy consumption culture through a general quality increase in the jewelry industry.

정밀주조기술은 수공예에 의한 일품장신구가 규격화, 표준화된 제품으로 대량 생산될 수 있는 기틀을 만들어 주었고 또한 생산라인의 시스템 개선으로 업무의 분업화와 장비의 첨단화로 명실상부한 장신구가 산업으로서의 면모를 갖추는데 지대한 기여를 하였다. 본 연구자는 주조장비가 국내 도입된 이래 약 30여 년 동안 주조장비의 고급화와 업그레이드에 따른 제품의 질이 향상되었다고 볼 수 있으나 주조장비가 100 % 해결해 줄 수 없는 생산 프로세스를 직시하면서 정밀주조 과정에서 매우 중요하다고 판단되는 왁스트리(Wax Tree)공정 시 수행되는 장신구 사출물과 금속이 용해되어 흘러 들어가는 스프루(Sprue)의 연결은 여전히 수작업에 의해 진행이 되고 있고 이 과정에서 원하는 결과물이 나오는데 많은 영향을 미칠 수 있다는 문제점을 실험데이터를 바탕으로 하여 좀더 완벽한 정밀주조의 프로세스를 수행하기 위한 방안 제시를 하고자 한다.

Keywords

References

  1. J.-P. Ha, "A study the investment casting process for improving of the mechanical properties", Pukyong National University Graduate School, Doctorate Thesis (2005) 24.
  2. Y.-H. Heo, "Chrome-molly steel precision casting mold rotation speed using the vertical centrifugal casting and mechanical properties of the impact on", Yeungnam University Graduate School, PhD thesis (2002) 38.
  3. N.-S. Jo, "A wax sculpture in ceramic alumina by the investment casting flask research", Joe fleet Graduate School Master's Thesis (1995).
  4. S.-I. Yun, "Design of metal casting process for process analysis", Ph.D. dissertation, Graduate School, Chungnam National University (1995) 55.
  5. I.-S. Cho, "Investment casting of the molten metal flow and heat transfer in the numerical analysis for the", Master's thesis, Graduate School of Yonsei University (1993).
  6. J.H. Choy, "Effect of anisotropic diffusion coefficient on the evolution of the interface void in copper metallization for integrated circuit", Journal of the Korean Crystal Growth and Crystal Technology 14 (2004) 58.
  7. C.-S. Park, J.-I. La and D.-Y. Kim, "Synthesis of powders from precursors prepared by precipitation process", Journal of the Korean Crystal Growth and Crystal Technology 12 (2002) 87.