• Title/Summary/Keyword: 3 차원 곡면 프린팅

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Design and Performance Test of Wide Blasting Nozzle for Curved Surface Cleaning based on Compressible Flow Analysis (압축성 유동해석에 기초한 곡면 세정을 위한 브라스팅 광폭 노즐의 설계 및 성능시험)

  • Kim, Taehyung;Kwak, Jun Gu;Sohn, Myong Hwan
    • Journal of Energy Engineering
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    • v.28 no.1
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    • pp.57-64
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    • 2019
  • In this study, the blasting nozzle for surface treatment of the curved surface of parts in power plant industry was designed and the cleaning performance was examined through the compressible flow analysis. At this time, the outlet of the curved nozzle was designed as a curved surface along the surface of the part. After the nozzle was made by 3-D printing, the abrasive was sprayed on the surface of the cylindrical specimen and the cleaning performance test was performed. The effective cleaning area obtained after the analysis was similar to the size and shape of the effective cleaning area obtained after the experiment. From this, the validity and effectiveness of the curved nozzle design was confirmed.

A study of correction dependent on process parameters for printing on 3D surface (3 차원 곡면에 정밀 인쇄를 위한 공정 변수에 따른 이미지 보정에 관한 연구)

  • Song M.S.;Kim H.C.;Lee S.H.;Yang D.Y.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.749-752
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    • 2005
  • In the industry, three-dimensional coloring has been needed for realistic prototype from rapid prototyping. Z-corporation developed a 3D printer which provides three-dimensional colored prototype. However, the existing process cannot be adopted to models from other rapid prototyping process. In addition, time and cost for manufacturing colored prototype still remain to be improved. In this study, a new coloring process using ink-jet head is proposed for color printing on three-dimensional prototype surface. Process parameters such as the angle and the distance between ink-jet nozzle and the three-dimensional surface should be investigated from experiments. The correction matrix according to sloped angle to minimize the distortion of 2D image was proposed by analysis of printing error. Therefore, approximated method for angle and discrete length according to the radius of curvature for printing on the curved surface was proposed. By printing image on the doubly curved surface, the method was verified. As a practical example, helmet was chosen for printing images on the curved surface. The character images were applied with approximated method for angle and discrete length and was printed on the helmet surface.

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