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LEI Dingzhong, SHI Shihong, FU Geyan. Research of collimator hood of inside-laser powder feeding nozzle for broadband laser cladding[J]. LASER TECHNOLOGY, 2015, 39(5): 590-593. DOI: 10.7510/jgjs.issn.1001-3806.2015.05.002
Citation: LEI Dingzhong, SHI Shihong, FU Geyan. Research of collimator hood of inside-laser powder feeding nozzle for broadband laser cladding[J]. LASER TECHNOLOGY, 2015, 39(5): 590-593. DOI: 10.7510/jgjs.issn.1001-3806.2015.05.002
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Research of collimator hood of inside-laser powder feeding nozzle for broadband laser cladding

  • School of Mechanical and Electric Engineering, Soochow University, Suzhou 215021, China

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  • Received Date: September 14, 2014
  • Revised Date: September 29, 2014
  • Published Date: September 24, 2015
    Graphical Abstract
    • Abstract
  • In order to improve the situation of the metal powder radiation existing in the current powder feeding broadband laser cladding nozzles and the low utilization rate, a collimation hood of powder feeding nozzle for broadband laser cladding was designed. A flow channel was designed to realize the uniformity of inside-laser powder feeding, to ensure that the powder was heated evenly and the divergence of powder beam was small. FLUENT software was used to analyze the internal fluid of collimation gas cover, to determine the inside cavity and the outlet size of device, to reduce the turbulence at the exit and to achieve better collimation effect. The experiment of the new powder feeding device was conducted to verify the effectiveness of gas collimator device. The results indicate that the best collimation could be achieved when width of the collimated gas curtain is 1.5 times of the width of powder beam.
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    • References (16)
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