보존과학회지 (Journal of Conservation Science)

  • 제34권2호
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  • Pages.87-96
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  • 2018
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  • 1225-5459(pISSN)
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  • 2287-9781(eISSN)
한국문화재보존과학회 (The Korean Society Of Conservation Science For Cultural Heritage)
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정련·단접 공정 재현 실험을 통해 생산된 소재 및 부산물의 재료학적 특성

Material Characteristics of Forge Welded Bar and By-product through Reproduction Experiment to the Refining and Forge Welding Process

  • 오민지 (공주대학교 문화재보존과학과) ;
  • 조현경 (공주대학교 문화재보존과학과) ;
  • 조남철 (공주대학교 문화재보존과학과) ;
  • 한정욱 (나이프 갤러리)
  • Oh, Min Jee (Department of Cultural Heritage Conservation Science, Kongju National University) ;
  • Cho, Hyun Kyung (Department of Cultural Heritage Conservation Science, Kongju National University) ;
  • Cho, Nam Chul (Department of Cultural Heritage Conservation Science, Kongju National University) ;
  • Han, Jung Uk (Knife Gallery)
  • 투고 : 2018.03.13
  • 심사 : 2018.04.10
  • 발행 : 2018.04.20
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초록

본 연구는 정련 단접 공정을 재현하고 그 과정에서 발생한 강괴 및 단조박편을 단접 횟수에 따라 분류하여 분석하였다. 강괴의 경우 단접 횟수가 증가함에 따라 불순물과 공극률이 26.09%에서 1.8%로 줄었다. 또한 경도는 평균 36.88HV 가량 높아졌다. 이는 금속 조직이 점차 치밀해지는 것을 관찰할 수 있었다. 단조박편의 경우 단접 횟수에 따라 전철량이 높아졌다. XRD 분석 결과 Quartz, Fayalite, $W{\ddot{u}stite$, Magnetite가 관찰되며 횟수가 증가함에 따라 Quartz의 양이 낮아졌다. 또한 단접 횟수가 늘어남에 따라 입상(粒狀)의 $W{\ddot{u}stite$들이 응집(凝集)하여 굵고 긴 백색의 띠 형태로 관찰되었다. 이상의 결과로 정련 단접 공정에서 발생한 강괴 및 단조박편의 횟수별 특징을 알 수 있었으며 향후 고대 제철공정 및 철기 제작기술 체계를 정립할 수 있는 기술 자료로 활용할 수 있을 것으로 본다.

This study analyzed the influence of folding time on the forge welded bar and hammer scale produced using the traditional refining and forge welding reproduction experiment. In the case of the forge welded bar, increasing the forging time decreased the percentage of impurities and porosity from 26.09% to 1.8%. Additionally, the hardness increased by an average of 36.88 HV. In other words, the microstructure gradually became more precise. For the hammer scale, the amount of T Fe increased with forging time. X-ray diffraction analysis revealed the presence of quartz, fayalite, $w{\ddot{u}stite$, and magnetite. The amount of quartz decreased as the forging time increased. In addition, as the forging time increased, the granular $w{\ddot{u}stite$ changed into a cohesive, long, white band. The results provide information on the characteristics of the forge welded bar and hammer scale produced in the refining and forging process. This information can be used as technical data for ancient steel making processes as well as for future technological systems.

키워드

참고문헌

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