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Volume 29 Issue 1
Aug.  2021
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Article Contents
WU Zhangchun, ZHANG Jie, CHEN Xianlin, HAO Jianwei, JIA Shenghui, WANG Leichuan. Process of crater formation upon electric discharge textured roll surface[J]. Chinese Journal of Engineering, 2007, 29(1): 59-62,81. doi: 10.13374/j.issn1001-053x.2007.01.013
Citation: WU Zhangchun, ZHANG Jie, CHEN Xianlin, HAO Jianwei, JIA Shenghui, WANG Leichuan. Process of crater formation upon electric discharge textured roll surface[J]. Chinese Journal of Engineering, 2007, 29(1): 59-62,81. doi: 10.13374/j.issn1001-053x.2007.01.013

Process of crater formation upon electric discharge textured roll surface

doi: 10.13374/j.issn1001-053x.2007.01.013
  • Received Date: 2005-10-10
  • Rev Recd Date: 2006-09-20
  • Available Online: 2021-08-16
  • The problems about the variation in center temperature of discharged region and the relationship between crater shape and electrical parameters in the process of electric discharge texturing on the surface of a work roll was studied. The developing process of discharging channel and the distribution of heat flux were analyzed. A thermal conduction model of single channel spark per pulse was presented. By combining the methods of integral transform and finite difference this model was solved. The change of transient temperature at the center spark point upon the roll surface was discussed under the condition of different peak current, and the relation of crater shape to peak current and pulse duration was also deduced. Finally, the calculated values were compared with the experimental ones. The result showed that they were in good agreement. The developed model and adopted method were valid and could be used for simulation of the developing process of geometric topography on roll surface.

     

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      沈陽化工大學材料科學與工程學院 沈陽 110142

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