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ZHANG Kai, YE Yunxia, ZHAO Li, RAO Xiao. Study on die-less multi-point laser shock forming of metal foils[J]. LASER TECHNOLOGY, 2018, 42(6): 758-763. DOI: 10.7510/jgjs.issn.1001-3806.2018.06.006
Citation: ZHANG Kai, YE Yunxia, ZHAO Li, RAO Xiao. Study on die-less multi-point laser shock forming of metal foils[J]. LASER TECHNOLOGY, 2018, 42(6): 758-763. DOI: 10.7510/jgjs.issn.1001-3806.2018.06.006
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Study on die-less multi-point laser shock forming of metal foils

  • 1.

    School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China

  • 2.

    Institute of Laser Technology, Jiangsu University, Zhenjiang 212013, China

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  • Received Date: January 17, 2018
  • Revised Date: March 29, 2018
  • Published Date: November 24, 2018
    Graphical Abstract
    • Abstract
  • In order to solve the problem of high cost of micro mold design and manufacturing in metal foil micro deep drawing process, a die-less laser shock micro-forming method was used. A high repetition frequency laser with pulse width of 5ns and spot diameter of 50μm was shocked on the T2 copper foil with thickness of 20μm, and theoretical analysis and experimental verification were carried out. The results show that, when the confinement layer is not damaged, the pit depth h, the diameter of pit bottom L1 and the inclination of pit wall (L-L1) increase linearly with the increase of single pulse energy E and spot overlapping rate. The order of inner and outer circumference of laser scanning has no effect on the depth of pits. But it will affect the diameter of the bottom of the pit. When scanning the outer circumference firstly, a larger bottom diameter pit will be formed. The shape of the pit is controllable without die. The study is helpful to the further study on die-less laser micro drawing progressive forming.
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    • References (19)
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