论文部分内容阅读
提出了一种新的微成形方法——激光驱动飞片加载金属箔板微成形技术,结合飞片速度模型和加载压力模型阐述了成形机理,利用10μm厚的铝箔进行了初步成形实验。在体式显微镜下观察成形后的锅箔表面光滑,并且与模具的贴合程度较高,表现出很好的成形精度。考察了激光能量对铝箔成形深度的影响。通过表面轮廓形貌测量仪检测发现,成形深度受激光能量的影响比较大。在光斑直径为1mm,单脉冲激比能量为25～40mJ时,铝箔成形深度随激光能量基本呈线性关系增加,单脉冲激光能量在45～50 mJ时,铝箔由于破裂成形深度大幅增加。
A new method of micro-forming, a micro-forming technique of laser-driven flyer loaded metal foil, was proposed. The formation mechanism was described by combining the flying-velocity model with the loading pressure model. The preliminary forming experiments were carried out by using 10 μm-thick aluminum foil. Under the stereoscopic microscope, the surface of the foamed foil after forming was observed to be smooth, and the fit degree with the mold was high, showing good forming precision. The effect of laser energy on the forming depth of aluminum foil was investigated. Surface profilometry measured by the instrument found that the forming depth by the laser energy is relatively large. When the spot diameter is 1mm and the single pulse pulse energy is 25 ~ 40mJ, the forming depth of aluminum foil increases with the increase of laser energy. When the energy of single laser pulse is 45 ~ 50 mJ, the depth of aluminum foil greatly increases due to rupture.