Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Study of characteristics of plume based on hue-saturation-intensity during high-power disk laser welding

Gao Xiang-Dong Wang Run-Lin Long Guan-Fu Katayama Seiji

Study of characteristics of plume based on hue-saturation-intensity during high-power disk laser welding

Gao Xiang-Dong, Wang Run-Lin, Long Guan-Fu, Katayama Seiji
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  2229
  • PDF Downloads:  511
  • Cited By: 0
Publishing process
  • Received Date:  10 September 2011
  • Accepted Date:  10 December 2011
  • Published Online:  05 July 2012

Study of characteristics of plume based on hue-saturation-intensity during high-power disk laser welding

  • 1. Faculty of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou 510006, China;
  • 2. Joining and Welding Research Institute, Osaka University, Osaka 567-0047, Japan
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 51175095), the Natural Science Foundation of Guangdong Province, China (Grant Nos. 10251009001000001, 9151009001000020) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20104420110001).

Abstract: During high-power disk laser welding, the surface of the weldment is gasified strongly by the laser irradiation. Meanwhile, the metal vapor plume is generated and changed into the plasma state. This plume can transmit through the laser beam reversely and has a significant shielding effect on the laser beam. Therefore, the laser power which should be transferred inside the weldment is decreased, the welding efficiency and welding quality are seriously affected. By studying and exploring the relation between the characteristics and variation rules of plume and the welding quality, the state of laser welding can be monitored in real-time by the plume characteristics. In the high-power disk laser bead on plate welding of a type 304 austenitic stainless steel plate at a continuous laser power of 10 kW, an extraviolet and visible sensitive high speed color camera is used to capture the metal vapor plume dynamic images. These digital images are transfered to the hue-saturation-intensity color spaces from the red-green-blue color spaces. Also, the area of metal vapor plume and the path length which the laser beam runs through the metal vapor plume are segmented and defined as the plume eigenvalues. The fluctuation of weld bead width is used to evaluate the stability of welding quality. By analyzing the statistics of the variance and mean values of plume eigenvalues, the experimental results confirm that the stability of the welding could be evaluated by the plume characteristics dynamically.

Reference (12)

Catalog

    /

    返回文章
    返回