Title page for etd-0816111-180816


[Back to Results | New Search]

URN etd-0816111-180816
Author Hsin-Ying TSAI
Author's Email Address No Public.
Statistics This thesis had been viewed 5342 times. Download 655 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2010
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Studies on the Surface Characteristics of Steel by 
Electrochemical Buffing Using Conductive Polymer Tools
Date of Defense 2011-07-26
Page Count 92
Keyword
  • Electrochemical buffing
  • Working depth
  • Surface roughness
  • Stainless steel
  • Conductive polymer
  • Abstract  In this study, a conductive polymer is used as tool electrode in machining the
    stainless steel surface by electrochemical buffing. Using a very small working current of
    this conductive polymer, the material of the workpiece is dissolved, and the peaks on
    the workpiece surface is buffed by the abrasive simultaneously. A mirror-like surface
    can be achieved with high efficiency using this novel method.
       In the micro-electrochemical machining experiments, the initial  surface roughness
    of the workpiece is about Rmax = 1.645 μm, the average speed of electrode 25
    mm/sec, the machining time 10 min, the electrolyte temperature 25℃, and the stroke 10 mm. The variable conditions are given as follows: the sodium nitrate
    (NaNO3) electrolyte of 0 to 40 wt%, the normal load of 0 to 20 N, and the working
    current of 0 to 100 mA. Experimental results show that the minimum surface roughness
    of the workpiece can be achieved to about Rmax = 0.3μm at the electrolyte concentration
    of 20 wt%, the working current of 25 mA, and the normal load of 10N, which is
    selected as the optimum operative parameters in the following.
    The silicon carbide with average particle size of 9.5μm is added to conduct the
    electrochemical buffing experiments. Compared with the micro-electrochemical
    machining method, results show that the maximum machining depth increases to about
    two times, and the surface roughness  decreases to about 50%. In this condition, the
    mirror-like surface of the workpiece with the working depth of 1.5μm and Rmax of
    0.15μm can be achieved.
    Advisory Committee
  • Jen Fin Lin - chair
  • Yeau-Ren Jeng - co-chair
  • Rong-Tsong Lee - advisor
  • Yuang-Cherng Chiou - advisor
  • Files
  • etd-0816111-180816.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2011-08-16

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have more questions or technical problems, please contact eThesys