巻号一覧
12 巻 (1978 - 1979)
- 24 号 p. 1-
- 23 号 p. 1-
12 巻, 23 号
選択された号の論文の5件中1～5を表示しています
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木本 康雄, 田宮 勝恒, 本田 昭一, 安藤 利明, 洲崎 友彦1978 年 12 巻 23 号 p. 1-11
発行日: 1978/09/30
公開日: 2010/03/12
ジャーナル フリーThe electrolytic polishing of inner surface of large stainless steel vessels for chemical reactors has been reported recently for the purpose of decreasing the adherence of foul. But ordinary method of electrolytic polishing in strong acids is not always useful to apply to wide area because it necessitates pre-finishing of the surface and consumes much electric power.
In this paper, experimental results performed by a new method, electrolytic polishing assisted by mechanical abrasion in solution of sodium nitrate are described.
The roughness of the polished surface has been of 0.05-0.1μm Rmax and the adherence of the foul has been decreased to about one twentieth of that on mechanically polished surface.抄録全体を表示PDF形式でダウンロード (3595K) -
実用合金の陽極溶解特性牧野 英司, 佐藤 敏一1978 年 12 巻 23 号 p. 12-23
発行日: 1978/09/30
公開日: 2010/03/12
ジャーナル フリーThe anodic properties involved in electrochemical machining of four heat-resistant nickel-base alloys and pure nickel were studied in NaCl and NaNO3 solutions. The polarization curve and dissolution current efficiency were measured in a flow channel cell. The results show that during electrochemical machining of Inconel 718 and Hastelloy X, anodic dissolution occurres only in the transpassive state and that the dissolution current efficiencies of these alloys are about 100% independent of the current densities in NaCl and NaNO3 solutions. From the above results it is estimated that in electrochemical machining of these alloys, good dimensional control cannot be achieved even in NaNO3 solution. The influences of the alloy composition on the anodic properties were discussed briefly.抄録全体を表示PDF形式でダウンロード (2596K) -
電解液中の放電現象および電解放電加工における電解除去量について久保田 護, 田村 祐二, 大森 如水, 平野 廉香1978 年 12 巻 23 号 p. 24-33
発行日: 1978/09/30
公開日: 2010/03/12
ジャーナル フリーElectric discharge phenomena in electrolyte and the electro-chemical metal removal in electrochemical discharge machining (ECDM) are studied experimentally to make clear the working mechanism of ECDM. The results obtained are as follows:
(1) Discharge in electrolyte has some appearances by various electrode voltages and the unstable arc discharge is utilized for ECDM.
(2) When the electrode gap is rather wide (about 0.2mm and more) discharge takes place between the electrode and the electrolyte, but in the usual ECDM of small working gap (less than 0.1mm) discharge seems to occur between the two electrodes.
(3) In the single discharge by a rectangular wave pulse current generator an ignition delay of long duration is found out which suggests that the discharge occurs after the electrode surface has been covered by the gas evoluted in the electrochemical process.
(4) Chemical analysis of iron ion in the drainage of ECDM shows that electrochemical removal in ECDM is nearely equal to the maximum rate of electrochemical removal even if the total removal rate changes.抄録全体を表示PDF形式でダウンロード (6762K) -
単発放電こんと面あらさの関係向山 芳世, 緒方 勲, 渡辺 輝世志1978 年 12 巻 23 号 p. 34-49
発行日: 1978/09/30
公開日: 2010/03/12
ジャーナル フリーIn the field of machining, the problem of the accuracy of machined surface is very consequence subject and the same in the electric discharge machining. However, the investigations on the formative process of the machined surface doesn't enough, because the gap phenomena in electrodes are extremly complicated.
In this paper, in order to make clear the formation mechanism of the machined surface by electric discharge machining, the differences between the shape of the impulse discharged crater by using virsin electrode and by using the non-virsin elecrode, and the differences among the several sharp model electrodes (the pointed end diameter ∅0-∅1.0mm), and further the relationship between the shapes of thoes impulse discharged crater and the repetitional discharged surface, and other experiments were performed.
In concequence, it became clear that the crater shapes of the repetitional discharged surface are extremely similar to the shape of the impulse discharged crater by using the non-virgin electrode and the sharp model electrodes which diameter ∅0-∅0.5mm.抄録全体を表示PDF形式でダウンロード (1220K) -
藤村 勉, 五十鈴川 浩児1978 年 12 巻 23 号 p. 50-70
発行日: 1978/09/30
公開日: 2010/03/12
ジャーナル フリーPDF形式でダウンロード (2048K)
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