Study for multi-filament drawing of Bi2223 high-temperature superconductivity wire by FE method

유한요소법에 의한 Bi2223 고온 초전도 선재의 다심 인발에 대한 연구

  • 박동인 (부산대학교 정밀기계공학과) ;
  • 김병민 (부산대학교 정밀정형 및 금형가공연구소) ;
  • 오상수 (한국전기연구원 초전도선재그룹)
  • Published : 2003.10.01

Abstract

High-temperature superconduction materials(Bi2223) possess electrical/electronic and magnetic properties. Because high-temperature superconduction materials is a ceramic powder, that can not be produced singlehandedly. So Ag sheathed Bi-2223 wire was produced by drawing process using powder-in-tube(PIT) method. This superconductor has many difficulties to produce. The main difficulty is that the mechanical properties of the ceramic powder are very different from those of the Ag sheath. Bi2223 high-temperature superconductivity have a single filament drawing process, and multi-filament drawing process. This study analysed multi-filament drawing process by FEM, a defects during multi-filament drawing was studied by FEM.

Keywords