首页> 外文期刊>Micromachines >Investigation of Micro-Bending of Sheet Metal Laminates by Laser-Driven Soft Punch in Warm Conditions
【24h】

Investigation of Micro-Bending of Sheet Metal Laminates by Laser-Driven Soft Punch in Warm Conditions

机译:加热条件下激光驱动的软冲孔对金属薄板层压板微弯曲的研究

获取原文
           

摘要

Microscale laser dynamic flexible forming (???μLDFF) is a novel ultrahigh strain rate manufacturing technology with high efficiency and low cost. However, the ???μLDFF is just confined to single-layer foil at present. In this work, sheet metal laminates (Cu/Ni) were selected as the experimental material for its excellent mechanical and functional properties, and a new micro-bending method of sheet metal laminates by laser-driven soft punch was proposed in warm conditions. The micro-mold and warm platform were designed to investigate the effects of temperature and energy on formability, which were characterized by forming accuracy, surface quality, element diffusion, and so on. The experimental results show that the forming accuracy and quality increased first and then decreased with laser energy, but the hardness increased consistently. In warm conditions, the fluidity of material was improved. The forming depth and accuracy increased for the relieved springback, and the surface quality increased first and then decreased. The tensile fracture disappeared with temperature for the decreased hardness and thinning ratio, and the element diffusion occurred. Overall, this study indicates that the formability can be improved in warm conditions and provides a basis for the investigation of micro-bending of sheet metal laminates by ???μLDFF in warm conditions.
机译:微型激光动态柔性成形(μLDFF)是一种新颖的高应变率高效率和低成本的制造技术。但是,μLDFF目前仅限于单层箔。在这项工作中,金属薄板(Cu / Ni)具有优异的机械和功能特性,被选为实验材料,并提出了一种在温暖条件下通过激光驱动的软冲孔对金属薄板进行微弯曲的新方法。设计微模具和热平台以研究温度和能量对可成型性的影响,其特征在于成型精度,表面质量,元素扩散等。实验结果表明,随着激光能量的增加,成形精度和质量先提高后降低,但硬度却不断提高。在温暖的条件下,材料的流动性得到改善。为了减轻回弹,成形深度和精度增加,并且表面质量先增加然后降低。随着硬度和稀薄率的降低,拉伸断裂随温度而消失,并发生元素扩散。总的来说,该研究表明,在热的条件下可改善可成形性,并为研究在温热的条件下μLDFF对金属薄板层压板的微弯曲提供了基础。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号