Abstract
A novel rotary laser dieless drawing process for metal microtube with local heating using a laser irradiated from one direction is proposed. A metal microtube is rotated about a tensile axis by rotary stage with chucks for circumferential uniform temperature distribution. A tube of stainless steel SUS304 with an outer diameter of 0.5mm and thickness of 0.13mm is used in the experiments. The rotating effects on outer diameter variation and outer radius error are evaluated in laser dieless drawing. As a result, the outer diameter variation under a condition of non-rotation is higher than that under condition of rotation. Thus, the limit of stable drawing condition can be enhanced by rotating effect in laser dieless drawing. In addition, in case of laser heating irradiated from one direction under non-rotating, the deformation amount of irradiated side is larger than that of non-irradiated side in laser dieless drawing. Meanwhile, the microtube is drawn subequally under condition of rotation due to circumferential uniform temperature distribution. Thus, the distorted radial deformation can be restrained by rotating effect. From these results, the effectiveness of the proposed rotary laser dieless drawing for fabricating metal microtubes can be demonstrated experimentally.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call