Development of Heat-assisted Dieless Forming Apparatus for Metal Tubes

Abstract

Novel heat-assisted dieless forming apparatus with high frequency induction heating. laser and acetylene burner for tubes is developed. Circular and non-circular metal microtubes is fabricated successfully under tension motion in the dieless forming process. Macro and micro size metal bellows is fabricated and the formed shaped can be controlled by compression motion in the dieless forming. The superplstic dieless forming with ultra-high temperature is applied to zirconia ceramic tube for further miniaturization of the tube. Finally, the validity of developed heat-assisted dieless forming apparatus can be demonstrated experimentally.