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Design of Rolling Pass Schedule utilizing Grain Refinement by Strain Accumulation

변형률누적에 의한 결정립미세화를 응용한 압연 패스 스케줄의 설계

  • 박동진 (홍익대학교 기계·시스템디자인공학과) ;
  • 이상주 (홍익대학교 대학원)
  • Published : 2003.03.01

Abstract

Among various methods to acquire high strength in plain carbon steel, the mettled of grain refinement by controlling thermo-mechanical processing parameters has gained a great attention if steel rolling industries. In the present study, three different rolling pass schedules are proposed to obtain fine grains which are based on combined results of recrystallization modelling, finite element analysis and experiment. Since meta-dynamic or dynamic recrystallization has been found to be very effective in producing fine grains, reduction ratio and interpass time in the proposed rolling pass schedules were determined in order to invoke such recrystallization as often as possible.

Keywords

Dynamic Recrystallization;Hot Rolling;Static Recovery;Grain Refinement;Austenite Grain Size;Process Design

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