書誌事項
- タイトル別名
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- Application of Polycrystalline Diamond (PCD) to EDM (1st Report)
- 多結晶ダイヤモンド焼結体の放電加工への応用に関する研究(第1報)各種ダイヤモンド基複合電極による放電加工
- タケッショウ ダイヤモンド ショウケツタイ ノ ホウデン カコウ エノ オウヨウ ニ カンスル ケンキュウ ダイ1ポウ カクシュ ダイヤモンドキ フクゴウ デンキョク ニ ヨル ホウデン カコウ
- - 各種ダイヤモンド基複合電極による放電加工 -
- - EDM properties of diamond-based composite electrode -
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This paper deals with an investigation of new diamond-based composite electrodes for electrical discharge machining (EDM), which have similar EDM performances, lower cost and more flexibility in size and shape compared with an electrically conductive CVD (EC-CVD) diamond thick film electrode. The EC-CVD diamond thick film electrode with high thermal diffusivity was found, in the authors' previous study, to show very low electrode wear in finish EDM with a short pulse on time, compared with conventional copper and Cu-W electrodes. Among some diamond-based composite materials, it was found experimentally that, in EDM of a die-steel material and tungsten carbide material, a polycrystalline diamond (PCD) electrode shows a very low electrode wear ratio, similar to the EC-CVD diamond electrode, in a wide range of pulse on time of 1μs to 30μs and that the material removal rate of the PCD electrode is about 50% and 80% of the EC-CVD diamond electrode for die-steel and tungsten carbide, respectively. The results of the investigation of the reason behind the excellent EDM performance of the PCD electrode by FEM analysis suggested that the temperature rise of the electrode was restrained because of the high thermal diffusivity of the diamond in PCD and high electrical conductivity of the cobalt binder in PCD.
収録刊行物
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- 電気加工学会誌
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電気加工学会誌 42 (100), 65-72, 2008
一般社団法人 電気加工学会
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詳細情報 詳細情報について
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- CRID
- 1390001206233735808
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- NII論文ID
- 10024265901
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- NII書誌ID
- AN00151681
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- ISSN
- 18810888
- 0387754X
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- NDL書誌ID
- 9605702
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可