집합조직 분석을 통한 고대 금속선(金屬線) 제작기술 조사 (2)[韩语论文]

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The metal wire is metal goods with a thin diameter. The ancient metal wire was variously used as a decorative purpose in the filigree, the Buyao, the Ipsa(inlay), and also the traditional textile fiber made of threads with lengthened gold sheets or go...

The metal wire is metal goods with a thin diameter. The ancient metal wire was variously used as a decorative purpose in the filigree, the Buyao, the Ipsa(inlay), and also the traditional textile fiber made of threads with lengthened gold sheets or golds. Generally the manufacturing technology of the metal wire is classified as hammering, twisting and drawing and so on. It has been developed as an order of hammering-twisting-drawing. Especially in aspect of the technical advancement, use of the draw plate has been discussed as highly important subjects since it proves the development of using tools. Therefore it has been researched on the manufacturing technology of the metal wire in the domestic and international way directly and indirectly. Unfortunately most studies were just focused on the suface observation, which barely shows the specific features to distinguish the manufacturing technology. Futhermore it’s hard to classify the technologies due to limits of possibilities as a combination. Thus it’s required of a variety of the investigation to find out the manufacturing technology more clearly. In this the reproduction experiment of manufacturing the metal wire was conducted and the surface of reproduced wire was observed to verify physical features of the manufacturing technology. Also microstructure and texture analysis were organized on the metal wire used in ancient artifacts and reproduced by hammering through the experiment. As a result of the surface observation, the metal wire reproduced by hammering showed the polygonal cross section, and the surface’s width along the longitudinal direction was not constant. In addition, it was able to find out the tapped trail by hammering and the wrinkle created while the edge had been mashed. After rolling the metal wire created by hammering, the surface was cleared up and a short line was partially observed in the longitudinal direction due to the edges. The metal wire manufactured by twisting, the diagonal line was observed on the surface, and its width didn’t seem to be constant while the number of twists went on increasing. After rolling the metal wire made by twisting, the surface was cleared up and the blurred diagonal line was partially observed. Also the stria created by twisting was appeared in diagonal direction. In the case of drawing, firstly the punching holed steel-plate and the drawplate for the metal craft were produced individually through the experiment. And the metal wire manufactured by each way was investigated comparatively. Additionally, the wire made by the mechanical drawing was observed as well. Theoretically the punching holed steel-plate and the drawplate for the metal craft were the handcraft drawing method, so the surface seemed rough since it had many fine scratches comparing with the wire made by mechanical drawing. And wires made of both ways showed the largest differences in the shape of cross section and edge. It’s affected by the hole shape of the drawplate and the axial direction. Therefore it was verified that the surface form could be changed in the same wire follwing the hole shape of the drawplate and the axial direction of pulling the wire. On the other hand, the metal wire in these days differed from the ancient metal wire with the surface feature because the metal wire was created with the drawplate for the metal craft or the wire made by the mechanical drawing recently. Henceforward it seems to be possible to use these results for judging the authenticity of the cultural property. As a result of the microstructure anlysis, the metal wire made by hammering showed the morphologic irregular on α. The crystal grain was formed densely from the inside to the surface as longitudinally direction. The Gilt Bronzed Cap shining(yungrak) of Gongju Suchon-ri and The Gilt Bronzed Crown Ornament shining(yungrak) Gangneung Chodang-dong showed the very similar shape of the microstructure. The perpendicular cross section to the longitudinal direction was not a circular type. Besides, the nonmetallic inclusions were arranged in the longitudinal direction of the specimen in the horizontal section from the longitudinal direction. Basically, the α phase was distributed throughout the microstructure and the twin band was observed inside of the specimens. Thus, it would be useful for us to aware that both specimens had been operated such like annealing during the metal wire manufacturing process. By the texture analysis result, the fabric texture of <111>direction was developed with the longitudinal direction of the wire specimen reproduced by hammering from the experiment. The texture of The Gilt Bronzed Cap shining(yungrak) of Gongju Suchon-ri and The Gilt Bronzed Crown Ornament shining(yungrak) of Gangneung Chodang-dong showed the analogous result with the microstructure. Both specimens had a highly disordered orientation distribution. Even considering the heat treatment in gilding process, the texture which was able to be found after drawing pricess. In addition, it seemed to take numerous numbers of the operation process since the direction of the crystal grains had been completely changed. In this the feature was re-observed through the reproduction experiment, which was remained following the manufacturing technology. As a result, the surface observation would highly difficult to reflect of the recognizability about the manufacturing method. Furthermore, it has been observed that the texture analysis is available to apply in metal wire manufacturing method through by the metallographic test about metal wire which used in the artifact and the metal wire which manufactured by the reenactment test.

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