巻号一覧
24 巻 (1986)
- 6 号 p. 290-
- 5 号 p. 228-
- 4 号 p. 164-
- 3 号 p. 106-
- 2 号 p. 55-
- 1 号 p. 3-
前身誌
24 巻, 6 号
選択された号の論文の8件中1～8を表示しています
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タンタル仕切板の炭化について細見 暁, 田口 暁子1986 年 24 巻 6 号 p. 290-299
発行日: 1986/11/25
公開日: 2010/08/05
ジャーナル フリーComposites (for tool blank application) of WC-Co support, tantalum intermediate layer, as a barrier, and sintered diamond were prepared by a simultaneous sintering technique under a high pressure-temperature condition. Tantalum carbide specimens were also prepared from a starting material of TaC powder by treating under identical conditions. The observed microstructures and chemical compositions of the composites are discussed in comparison with that of the specimens. Regarding the principal formation process of the tantalum carbide region observed in the tantalum layer of the composites, it may be suggested that tantalum reacts with cobalt melt to yield an alloy of Ta and Co, which subsequently is converted to tantalum carbide and cobalt.抄録全体を表示PDF形式でダウンロード (9710K) -
清水 恵次郎, 丸山 隆司1986 年 24 巻 6 号 p. 300-304
発行日: 1986/11/25
公開日: 2010/08/05
ジャーナル フリーIn order to estimate the thermal stress of bolts, a three dimensional transient temperature distribution and thermal stress analysis based on the finite element method is applied.
The numerical results are compared to experimental observations. Good agreements are obtained.抄録全体を表示PDF形式でダウンロード (424K) -
金山 公三, 中村 守1986 年 24 巻 6 号 p. 305-312
発行日: 1986/11/25
公開日: 2010/08/05
ジャーナル フリーA high pressure apparatus, which consisted of a bucket and outer case in contact to each other with a tapered surface, was developed. During high pressure generation, control of the supporting pressure on the core was possible by adjustment of the bucket stroke into the outer case. Strengthening characteristics of this apparatus were examined using a steel core with wire resistance strain gages. The results obtained, which gave instructions for operation and design for this apparatus, are as follows; 1) Owing to the sliding friction force, the relation between the supporting force and the stroke of the bucket showed hysteresis. 2) Strains at the inner surface of the core had the maximum value at an early stage of decreasing process of the supporting force. 3) The core and the bucket were deformed into the hand drum shape by applying the supporting force. Circumferential and axial strains were negative and positive, respectively. 4) Both of the taper angle and the ratio of the inner diameter to the outer diameter of the bucket influenced on distribution of the contact pressure between the outer case and the bucket.抄録全体を表示PDF形式でダウンロード (875K) -
村上 俊明, 与口 広光, 坪田 基司, 柏谷 英夫1986 年 24 巻 6 号 p. 314-321
発行日: 1986/11/25
公開日: 2010/08/05
ジャーナル フリーExplosive bonded cylinders consisting of three-layer-rings (φ800mm-L1000mm) of A286 (inner and outer rings) and Cu-Cr (damper ring) for the superconducting turbine generator were investigated.
Because of the requirement of high strength (σy=70kgf/mm2), heavy thickness (20-30mm) and multi-layers bonding, some fundamental tests were performed using the same material and thickness plates for actual structure and three-layer-rings with carbon steel and copper.
Using the knowledge from above investigations, A286/Cu-Cr/ A286 explosive bonded cylinder was manufactured and (1) diametrical change after bonding, (2) mechanical properties of A286 and Cu-Cr, (3) bonding strength and (4) fatigue strength under the severe service conditions at the event of generator short circuit were studied.
The obtained results were as follows.
(1) The diametrical changes in radial and longitudinal direction were-3.0% and 2.0% respectively.
(2) The difference of 0.2% proof stress in tangential and longitudinal direction caused by plastic strain at the bonding was remarkable.
(3) The bonding strength at two boundaries (inner-damper rings and outer-damper rings) was good enough compared with damper strength.
(4) Crushing force at the event of generator short circuit caused no separation and cracking in this structure.抄録全体を表示PDF形式でダウンロード (5582K) -
森吉 孝, 魚崎 泰弘1986 年 24 巻 6 号 p. 322-331
発行日: 1986/11/25
公開日: 2010/08/05
ジャーナル フリーIn recent years, supercritical fluids have received much attention in the field of separation techniques such as extraction, oil recovery, chromatography, etc. The essential features of the fluids which favor their use in the applications are: firstly their densities depend strongly on pressure and temperature near the critical point and secondly their transport properties (i. e. low viscosity and moderate mass diffusivity) are more favorable for mass transfer than those of liquids.
In this review, we will briefly describe some physical properties of supercritical fluids and the current situation of the technical applications. The description is further given for the principal types of phase behavior and the theoretical considerations of phase equilibria associated with supercritical fluid extraction.抄録全体を表示PDF形式でダウンロード (1118K) -
鵜戸口 英善1986 年 24 巻 6 号 p. 332-340
発行日: 1986/11/25
公開日: 2010/08/05
ジャーナル フリーPDF形式でダウンロード (1254K) -
鵜戸口 英善1986 年 24 巻 6 号 p. 341-343
発行日: 1986/11/25
公開日: 2010/08/05
ジャーナル フリーPDF形式でダウンロード (332K) -
金澤 武1986 年 24 巻 6 号 p. 344-346
発行日: 1986/11/25
公開日: 2010/08/05
ジャーナル フリーPDF形式でダウンロード (2080K)
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