• Title/Summary/Keyword: 철기

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A Study of Usability of Micro Shell as a Filler for Restoration of Iron Objects (Micro Shell을 이용한 철기 문화재 복원용 충전제의 사용성 연구)

  • Lee, Hyunji;Wi, Koangchul
    • Conservation Science in Museum
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    • v.27
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    • pp.91-102
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    • 2022

  • Silica-based inorganic fillers for restoration of iron objects have been used for the reduction of thermal expansivity and the improvement of melt flow index. However, the higher the amount of filler is applied, the more degradation of mechanical properties and the yellowing occur, which could cause retreatment of the objects with adding stress to them. Thus, research on not only the quantification of a mixture of resin and filler but also the yellowing should be emphasized. Experiments on mechanical properties were carried out with a silica-based light filler, Micro Shell as a comparison group. The results of the experiment showed Micro Shell reduced the number of occurrences of the yellowing by 34% compared to existing fillers. The value of adhesion and specific gravity was also improved depending on the filler amount. The results of this research indicate the possibility of using Micro Shell as a new filler.

  • https://doi.org/10.22790/conservation.2022.27.0091 인용 PDF KSCI

Ancient iron technologies as observed in the microstructures of iron sickles excavated from Icheon Seolbong fortress (이천 설봉산성 출토 철제 낫의 제작기술 연구)

  • Yu, Jae-Eun
    • Journal of Conservation Science
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    • v.20
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    • pp.67-80
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    • 2007

  • Icheon Seolbong fortress is located in Saum-dong, Icheon, Gyeonggi-do Province that its date is founded as 4th century of Bakjae dynasty after excavation by Dankook university museum. Excavated artifacts show various kinds such as earthenwares, ceramics, metal artifacts and so on. Especially many iron artifacts were founded in where Bakjae earthenwares were found that it indicates iron artifacts were manufactured in Bakjae Dynasty. From 6 iron sickles, called Beollat and Millet, samples were taken to examine mircostructures and from the results used iron material, shape-forging, steel-making process, heat treatment were investigated. From this late 4th century Bakjae dynasty iron manufacture profess was established. From the result, different treatment were used in different area of the sickles according to the its use. Beollats were quenched in blade and it was used for special purpose that require Intensity. Millats did not have special treatment that it was used to cut rice plant and plant. Used material was steel, steel was previously made by certain steel-making process. It is formed to produce iron ware and the area where intensity is required heat treatment was employed to make it strong. From the investigation it is derived that iron ware manufacture process in Bakjae dynasty is steel making$\rightarrow$shape-forging$\rightarrow$and heat treatment.

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A Study on Iron-manufacture Method through Analysis of Ironware excavated from Byeokje, Goyang (고양 벽제 제철 유구 출토 철기의 분석을 통한 제철방법 연구)

  • Lim, Ju-Yeon;Kim, Soo-Ki
    • Journal of Conservation Science
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    • v.28 no.4
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    • pp.367-376
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    • 2012

  • The ironware production technology is a measure to fathom the society's level of development in time. To understand iron-manufacure methods in the past, various investigations on the fine structures and additions of ironware remains and Iron ingot have been conducted in a way of natural science. This study metallurgically reclassifies remains excavated in iron-manufacture remains located in Beokje, Goyang, which are thought to be in time of Goryeo Dynasty, and draws an inference from the element analysis on the iron-manufacture and smelting technology. Iron ingot samples with a cast iron structure are divided into those with a white cast iron structure and those with a grey cast iron rich in P. The P content of grey cast iron appeared to be the result of adding a flux agent like lime, iron ingot and carbon steel iron ingot with a cast iron structure excavated in the area is regarded as pig iron which was made without a refining process. In this study it seems that two methods of making ironware were used in the area; one is the method of making ironware by pouring cast iron to the casting, and the other is the method of making carbon steel through the refinement of pig iron. It appears that highly even steel structure of carbon steel and a small amount of MnS inclusion are very similar with that of the modern steel to which Mn is artificially added. Nevertheless, these data alone cannot be used to determine the source of Mn in the carbon steel of the excavated from the iron-manufacture remains, which raises the need for further studies on the source and the possibility of carbon steel via the iron-manufacture process of cast iron.

  • https://doi.org/10.12654/JCS.2012.28.4.367 인용 PDF KSCI

물질문명의 씨앗을 찾아낸 위대한 발견

  • 한국전기제품안전진흥회
    • Product Safety
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    • s.55
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    • pp.23-25
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    • 1997

  • 철(鐵)자는 원래 '이(夷)'에서 나왔다. 본디 쇠(鐵)가 동쪽에 살고 있는 동이족으로부터 생산됐기 때문에 금(金)과 동이의 이(夷)를 합쳐 철자가 만들어졌다. 이같은 풀이를 그대로 받아들인다면 동이족이 중국의 철 생산권을 장악하는 한편 철기 제조기술을 가지고 있었다고 볼 수 있다.

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