首页|Machining Properties of Insulating ZrO_2 Ceramics Using Porous Copper Electrodes

Machining Properties of Insulating ZrO_2 Ceramics Using Porous Copper Electrodes

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  • NETL
  • NSTL
  • Trans Tech Publications Ltd
Insulating ceramics were considered as machinable material with the electrical discharge machining method using the assisting electrode method, which was proposed and advanced by the authors. The mechanical properties changed with the experimental parameters, including the physical characteristics of the workpiece and the tool electrode. In this research, sintered ZrO2-Y2O3 insulating ceramics were subjected to EDM. To investigate the effects of the porous tool electrode material on the removal rate, the porous copper cylinder material was fabricated by PECS (pulse electric current sintering) method. The relative density changed from 60 to 95 wt%. The suitable machining characteristics could be obtained with a relative density of 85% at the positive electrode polarity. The shape of electrodes was transcribed on the workpiece surface more precisely than the solid copper electrode.

sinking electrical discharge machininginsulating ZrO_2 ceramicsporous tool electrodemachining properties

Yasushi Fukuzawa、Keiji Yukihiro、Ken Yamasita

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Department of Mechanical Engineering, Nagaoka University of Technology,1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan

2010

10.4028/www.scientific.net/KEM.443.608

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.443
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