Precision surface grinding of Mn–Zn ferrite with in-process electro-discharge dressing (IEDD) |
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| Authors: | Eun-Sang Lee Sang-Ook Ahn |
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| Affiliation: | a Research Institute of Mechanical Technology, School of Mechanical Engineering, Pusan National University, San30, Jangjeon-Dong, Kumjung-gu, Pusan 609-735, South Korea;b Department of Mechanical Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Inchon, 402-751, South Korea |
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| Abstract: | Ferrite is widely used as a material for hard disk magnetic heads, but is difficult to grind because of its high hardness and brittleness. Therefore, a superabrasive (diamond) wheel is used for precision surface grinding of this material. But the conventional dressing method cannot be applied to the diamond wheel. This study describes a newly proposed method for carrying out effective in-process electro-discharge dressing (IEDD) of a diamond wheel. Using IEDD, the surface roughness of Mn–Zn ferrite was improved and the grinding force was reduced. IEDD is a good method to obtain efficient grinding and surface grinding of ferrite. |
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| Keywords: | In-process electro-discharge dressing (IEDD) Mn– Zn ferrite Superabrasive diamond wheel |
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