A Study on the Bending Process for the Circular Curved Tube and Rectangular Curved Tube with Fins

핀이 부착된 금속곡관 제품의 열간압출 굽힘가공에 관한 연구

  • 김민규 (부경대학교 대학원 기계공학과) ;
  • 박중원 (부경대학교 대학원 정밀기계공학부) ;
  • 진인태 (부경대학교 기계공학부)
  • Published : 2001.10.01

Abstract

The bending process for the circular curved tube and rectangular curved tube with fins can be developed by the hot metal extrusion machine with the multiple punches moving in the different velocity. The bending phenomenon can be controlled by the two variables. The one of them is the difference of velocity at the die exit section by the different velocity of billets through the multi-hole container. The other is the one by the different hole diameter. The results of the experiment show that the circular curved tube with fins and rectangular curved tube with pins can be formed by the extrusion process and that the curveture of the product can be controlled by the velocity of punch and diameter of container hole and that the defects such as the distortion of section and the thickness change of the wall of tube the folding and wrinkling of thin tube and fins did not happen after the bending processing by the extrusion bending machine.

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