巻号一覧
10 巻 (1960)
- 6 号 p. 371-
- 5 号 p. 309-
- 4 号 p. 227-
- 3 号 p. 149-
- 2 号 p. 3-
- 1 号 p. 1-
10 巻, 3 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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小林 俊郎1960 年 10 巻 3 号 p. 149-150
発行日: 1960/05/31
公開日: 2009/09/04
ジャーナル フリーPDF形式でダウンロード (819K) -
杉山 昇1960 年 10 巻 3 号 p. 151-156
発行日: 1960/05/31
公開日: 2009/09/04
ジャーナル フリーFor examining to what extent quartz in bauxite reacts with alkali solusion during the extraction of alumina, experiments have been made on the reaction of guartz in bauxite with caustic soda solusion and alumina pregnant liquor. The findings are as follows:
1. The guantily of quartz dissolved in caustic soda solusion increases in proportion to the surface area of quartz. It increases also with the increase in the temperature and concentration of the sdusion. The dissolving velocity becomes about double per 10°C of temperatue-rising and about 1.3 times as alkali concentration is doubled.
2. The reacting velocity of quartz in alumina pregnant liguor is slower than that in caustic soda solution. the velocity in alumina pregnant liguor with 1.7 of Na2O/Al2O3mol, ratio is 1/10 of that in caustic soda solution.
3. It is presumed that the reacting quantity of quartz during the extraction of alumina from bauxite by low-pressure-Bayer-process using tri-hydrate bauxite is less than 2% of the contents of quartz in bauxite.抄録全体を表示PDF形式でダウンロード (572K) -
Al-Zn-Mg-Cu4元系状態図の研究森永 卓一, 渡辺 久藤1960 年 10 巻 3 号 p. 157-178
発行日: 1960/05/31
公開日: 2009/09/04
ジャーナル フリーAs one of the fundamental studies on 75S, the investigation has been made on the phase diagrams of the systems Al-Zn-Cu, Al-Zn-Mg and Al-Zn-Mg-Cu (especially in the range of Al-Zn side). The diagrams have been obtained by means of inverse-rate thermal analysis, electric resistance measurement, X-ray analysis and microscopic observation.
The reactions appeared in these diagrams are summed up as follows:
1) In the phase diagram of the system Al-Zn-Cu four non-variant points are observed.
2) In the phase diagram of the system Al-Zn-Mg six non-variant points are observed.
3) The Al side of the system Al-Zn-Mg-Cu is divided into three ranges by the pseudo-ternary systems of Al-ω-CuAl2 and Al-ω-S, and in these ranges no quarternary intermetallic compound appears.
In the ranges of Al-ω-CuAl2-S and Al-ω-S-T-β eight ternary eutectic, two quarternary eutectic and one peritecto-ternary eutectic reactions are observed.抄録全体を表示PDF形式でダウンロード (6090K) -
森永 卓一, 高橋 恒夫1960 年 10 巻 3 号 p. 179-184
発行日: 1960/05/31
公開日: 2009/09/04
ジャーナル フリーWhen the supersaturated solid solution “β” of Al-Zn alloy is quenched from the rang above eutectoid line, the precipitation goes on at room temperature. The percipitation rate gets slow down, however, when small amount of magnesium or cadmium is added to the alloy.
Experiments have been made to study on the precipitation process by means of measuring temperature, specific heat, electric resistance and thermal expansion. For the experiments, zinc alloys with 5-65% aluminium (every 5%) and znic alloy with 21% aluminium and 0.01-0.03% magnesium have been used as specimens.
From the above-mentioned experiments, it was found out that the rapid precipitation which is seen in the supersaturated solid solution “β” of Al-Zn alloy is probably due to the existance of vacant latices and magnesium, when added, decreases or extinguishes the vacant latices.
It was also found out that small amount of magnesium probably promotes the formation of G-P Zone at room temperature.抄録全体を表示PDF形式でダウンロード (783K) -
結晶粒度と肌荒れとの関係山田 始1960 年 10 巻 3 号 p. 185-192
発行日: 1960/05/31
公開日: 2009/09/04
ジャーナル フリーGrain size of recrystallization gives big effect ot surfacc roughening of deformed sheet and the surface roughness of products by means of cutting or plastic working is an important factor in quality control.
The effect of grain size to the surface roughness of deformed aluminium sheet has been measured by use of kosaka-type surface flatness testing machine, and application of JIS specification of surface roughness to surface control of plastic working products has been discussed.
The results of the study are summed up as follows.
1. Relation between grain size and surface roughness of deformed sheet through deep drawing is in direct proportion.
2. Effect of impurities to the surface roughness cannot be found at least in a tolerable range of measured error.
3. The lowest limit of good surface in plastic working products should be about 4μ roughness. It is necessary, therefore, that specification of 6 S (3-6μ) in JIS is to be more in details.
4. Perfect surface reguires 3 S (1.5-3μ) roughness and the necessary grain size for this purpose is more than 500 grains/mm2.
5. A standard sample for roughness comparison was made for surface control of finished products of plastic working.抄録全体を表示PDF形式でダウンロード (2240K) -
結晶粒度と伸び,エリクセン値との関係および結晶粒成長におよぼす不純物Fe,Siの影響山田 始1960 年 10 巻 3 号 p. 193-197
発行日: 1960/05/31
公開日: 2009/09/04
ジャーナル フリーEffect of grain size on the surface roughening of deformed aluminium sheet was described in the Report (I), but its effects on the other propeties of the metal are also important.
In this paper, the efect of grain size on the elongation and Erichsen value is investigated, and, for the study on the grain size control, the effects of impurities, such as Fe, Si, to the grain growth of aluminium are also examined.
The findings are as follows:
1. With increase in grain size, elongation decreases hyperbolically.
2. Erichsen value moves in proportion to the change in elongation, but in inverse proportion to the coefficient of width contraction.
3. The higher is the purity of aluminium, the more remarkable is the growth rate of grains under a certain annealing time and temperature. This phenomenon is particularly remarkable, when the purity is more than 99.7%.
4. Fe, as an impurity in aluminium gives remarkable obstructive effect to the grain growth under a certain annealing time and temperature, while Si does not so remarkable.抄録全体を表示PDF形式でダウンロード (584K) -
ブランデーに対する1Sの防食効果におよぼすイオン交換処理の影響について森永 卓一, 財満 鎮雄, 加賀美 元男1960 年 10 巻 3 号 p. 198-201
発行日: 1960/05/31
公開日: 2009/09/04
ジャーナル フリーThe experiment has been made on anti-corrosive property of 1S in ion-exchanged brandy for the purpose of obtaining data for the study on the effect of the ion-exchange treatment, and the adding effect of the condensed phosphate in ion-exchanged brandy.
The results are summed up as follows:
1. The ion-exchange treatment can not particularly control the decrease in weight of 1S in brandy, but can prolong the change of the metallic briliance and the appearance of the pitting on surface of 1S.
2. The adding effect of the condensed phosphate in ion-exchanged brandy is not very distinct.
3. The ion-exchange treatment improves the character of brady in spite of the laspe of the time of dipping 1S, that is, the flavor and the taste of the brandy become better by ion-exchanging.抄録全体を表示PDF形式でダウンロード (522K) -
国本 隆, 竹内 正1960 年 10 巻 3 号 p. 202-224
発行日: 1960/05/31
公開日: 2009/09/04
ジャーナル フリーSandwich construction with foamed plastic, corrugated-sheet and honeycomb cores is widely used both for primary and secondary components in industries.
The use of sandwich panels in aircraft construction is new in practice and one of the most commonly used types of core materials is the metallic honeycomb, build up with metal foil. This paper is to report on the studies on basic characteristics of the core of sandwich such as density of the core, average elastic modulus, Poisson's ratio shear modulus, etc. The interesting results have been obtained from making sandwich construction of cylinder, sphere and saddle by changing Poisson' s ratio The theoretical values and results of the experiments on compression and shear is almost exactly coincident.
Further studies are being carried on about the strength and rigidity of sandwich construction.抄録全体を表示PDF形式でダウンロード (2674K)
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