A UBET Analysis of The Warm Forming Process of Magnetron Anode

마그네트론 양극의 온간성형 공정의 UBET해석

  • 조관형 (부산대 대학원) ;
  • 배원병 (부산대 정밀정형 및 금형가공 연구센터) ;
  • 김영호 (부산대 정밀정형 및 금형가공 연구센터) ;
  • 양동열 (한국과학기술원 정밀공학과)
  • Published : 1995.04.01

Abstract

Copper magnetron anode of a microwave-oven consists of an cylindrical outer-tube and various inner-vanes. The magnetron anode is produced by the complex process ; vane blanking, pipe cutting and sliver-alloy brazing of vanes. Recently, the backward extrusion process for forming vanes has been developed to avoid the complex procedures. The developed process is analyzed by using upper-bound elemental technique(UBET). In the UBET analysis, the upper-bound load, the configuration and the vane-height of final extruded product are determined by minimizing the total power consumption with respect to chosen parameters. To verify theoretical analysis, experiments have been carried out with pure plasticine billets at room temperature, using different web-thickness and number of vanes. The theoretical predictions both for forming load and vane-height are in reasonable agreement with the experimental results.

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