軽金属
Online ISSN : 1880-8018
Print ISSN : 0451-5994
ISSN-L : 0451-5994
1954 巻, 10 号
選択された号の論文の19件中1~19を表示しています
  • 通商産業省重工業局
    1954 年 1954 巻 10 号 p. 3-16
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
  • 小山田 裕吉
    1954 年 1954 巻 10 号 p. 17-18
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
  • 射場 恒三
    1954 年 1954 巻 10 号 p. 19-25
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
  • 森永 卓一
    1954 年 1954 巻 10 号 p. 26
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
  • 永井 彰一郎
    1954 年 1954 巻 10 号 p. 27-37
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
  • 川島 浪夫, 中村 雄造
    1954 年 1954 巻 10 号 p. 38-45
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    The recrystallization temperatures of high-purity (99.998%, 99.992%, 99.9%) and commercial pure aluminiums (99.6%) were studied after cold rolling by following the variation of hardness and microstructure in the course of annealing.
    It was found that the recrystallization temperature of 99.998% Al decreases proportionally to its reduction but those of aluminiums less than 99.992% purity become constant at the reduction of about 60%. The end temperature of recrystallization of 99.95% Al was the highest in the heavy reduction over 80%, but in the case of lighter reduction (20-30%) that of 99.6% Al was the highest. It was ascertained again that there exists a maximum point in recrystallization temperatures of pure aluminums between 99.9% and 99.99% purity in the heavy reduction.
    The temperature range between beginning and end of recrystallization is remarkablly wide as such as 180°C in 99.998% Al, but those of 99.9 and 99.6% Al are very narrow as 50°-60° in the heavy reduction.
    Furthermore, it was found the beginning temperature of recrystallization in 99.998% was 40°C in the heavy reduction as such as 95%, then it suggests to begin to recrystallize even at room temperature after heavy rolling.
  • 1954 年 1954 巻 10 号 p. 45
    発行日: 1954年
    公開日: 2008/10/30
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  • 硫酸皮膜交流電解に於ける電解液温度および電解電圧の影響について
    国本 隆, 池田 栄三, 西邑 弘
    1954 年 1954 巻 10 号 p. 46-52
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    In the Part 4 and Part 5 of this report, we discussed about the effects of voltage and concentration and time on the properties of anodic oxide film which is formed by the alternating current sulphuric acid process.
    In this Part, we examined the effects of bath-temperature and voltage on properties of anodic oxide film in alternating current sulphuric acid process. In this examinations, bath-temperature is variede from 10 to 30°C, voltage is varied from 10 to 20 V and the other factors are held in constant, i. e., concentration is 20% and time is 40 minutes. The inspection methods for the properties of oxide film are the methods specified in JIS P 10431, 1951, which were used in the preceding experiments. The results of experiments are as follows.
    (1) The relation between thickness of film and bath-temperature and voltage is shown by following experimental formula. (See Fig. 2, Fig. 3, Fig. 4 and Table 2.)
    T=0.845e (0.0392h+1.035V)
    (10<h<25 10<V<20)
    [T=Thickness (μ) h=Bath-temperature (°C)V=Voltage (V)]
    When the bath-temperature reaches 30°C., this formula can not be applied because of the severe corrosive attack of sulphuric acid.
    (2) The relation between thickness of film and electric power is shown by the same formula as in the Part 4. (See Fig. 5.)
    T=1.8+0.35W
    (10<h<25 10<V<20 time=40mins)
    [T=Thickness (μ) W=Electric power (A/dm2×V)]
    When the bath-temperature reaches 30°C., this formula can not be applied.
    (3) The relation between corrosion resistance and bath-temperature and voltage is shown by following experimental formula. (See Fig. 6, Fig. 7, Fig. 8, and Table 3.)
    S=(20.2-0.27h)e (0.0036h+0.022)V
    (10<h<25 10<V<20)
    [S=Corrosion resistance (sec.) h=Bath-temperature (°C.) V=Voltage (V)]
    When the bath-temperature reaches 30°C., this formula can not be applied.
    (4) "Specific corrosion resistance" (corrosion resistance for unit thickness of film) of the film is reduced as the bath-temperature rises and the reducing rate is higher in the lower voltage than in higher voltage. In comparison with the D. C. anodizing method, this reducing tendency of "specific corrosion resistance" is more remarkable in the A. C. anodizing method. (See Fig. 9)
    (5) The relation between abrasion resistance and bath-temperature and voltage is shown by following experimental formula. (See Fig. 10, Fig. 11, Fig. 12 and table 4.)
    A=1.59e (0.0533h+0.23V)
    (10<h<20 10<V<20)
    [A=Abrasion Resistance (sec.) h=Bath-temperature (°C.) V=Voltage]
    At the bath-temperature of 25°C. and 30°C., this formula can not be applied.
    (6) The relation between abrision resistance and thickness of film is shown by the same experimental formula as reparted in the Part 4 and Part 5 of this report. (See Fig. 14.)
    A=30T-100 (10<h<20 3<T<15)
    [A=Abrasion Resistance (sec.) T=Thickntiss (μ)]
    At the bath-temperature of 25°C, and 30°C., this formula can not be applied.
  • (1)電導度に及ぼすFe,Siの影響
    丸川 吾平, 及川 孝
    1954 年 1954 巻 10 号 p. 53-56
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    In the past, several experiments were made to investigate the effect of metallic impurities on the electrical conductivity of aluminium. But it has not almost studied in details on the range of less impurites than 0.3%. and aluminium wire for conductor cable of another country are differ in the impurity content of Fe and Si, although they have more Fe than Si
    So that, adding a small amount of Fe and Si, which entered whenever virgin aluminium was produced, to the high purity aluminium (99.987%), their effects were examined.
    Fe. Si, were added to the amounts of 0.4% at intervals of 0.04%, then the conductivities of Al-corner in the Al-Fe-Si ternary systems have been measured.
    As the result, electrical conductivity of aluminium varies on these range of two demensions, relating to working-degree and heat treatment, as follows-.
  • 細井 吉一, 湯川 守
    1954 年 1954 巻 10 号 p. 57-66
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    Recently, being producing the various products of Al alloys by impact extrusion, they studied on the high temperature impulsive hardness of Al and its alloys by means of Honda and Sato's impulsive hardness tester.
    They arrived at the following conclusions:
    (1) At room temperature, the volume of indent in all alloys is proportion to the deformation energy with exception of a small amount of deformation.
    (2) Impulsive hardness is almost proportion to Brinell Hardness Number (500kg/10mmφ).
    (3) High temperature impulsive hardness of Al is gradually decreased by heating.
    But, there is a hardening temperature range (200-300°C) in the case of binary and high strength Al alloys. These hardening are due to the solubility of additional elements and their intermetallic compounds to Al.
    (4) These hardness changes were discussed by observing the macrostructures.
  • 特に56S合金に就いて
    播本 寛光, 水野 勝三
    1954 年 1954 巻 10 号 p. 67-71
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    In this papers, the authors reported the results which mesured the current and potential of 56S alloys. The chemichal composition of samples were Si0.15%, Fe0.14%, Cu trace, Zn trtace, Mn 0.16%%, Mg5.6% Cr0.11% and Al93.84%. The measuring methods were all the same as the previous methods. The electrolytes 0.5%H2SO4 and 0.1%NaOH were used.
    Conclusion;
    In the case of H2SO4
    1. The change of the potential was a little difference.
    2. The change of current was a passably difference.
    In the case of NaOH
    1. The change of potential were little difference.
    2. The change of current was a passably difference.
    In each cases, the change of potential and current were a great value when the samples weretempe red at 200°C. We considered that these phenomena were due to the change of the internal structure.
  • 電解液の老化と溶解せるAlの陽極皮膜に及ぼす影響(第2報)
    小沼 治作
    1954 年 1954 巻 10 号 p. 72-76
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    In this paper, we report the change of Al concentration in the baths with increasing anodized area in the production practice, and the effects of Al dissolved in the electrolyte on the anodizing process and the properties of anodized film. The results of experiments are as follows,
    (1) The increase of Al content in the baths is proportional to the anodized area.
    (2) The electric conductivity of electrolyte decrease with increasing Al concentration of the electrolyte, but in anodizing process the electrolyte contain minut Al show max conductivity.
    (3) The data of the weight increase of anode by anodizing, the film thickness, and the weight increase of film by steam treatment show the Al content in the baths affect the composition of anodized film.
    (4) The Al content in the baths affect on the abrasion resistance of anodized film strictly.
  • 重滿 通彌, 柴田 仲一, 三好 泉, 栄 幸雄, 鶴 聰
    1954 年 1954 巻 10 号 p. 77-81
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    Light metals alloys for heat-treating, e. g. Lloyd, Alcoa 61S 53S, etc., which had been observed as ship-building materials owing to the strength of their mechanical natures and the suitableness for farbrication, have been put to the various tests and studied by the Committee of Light Metals for Shipbuilding Industry scince 1952. As the experiments, which had been made on the questions of process, fabrication and anticorrosion by the said Committee, resulted in finding some weak points in anticorroding, the painting anticorrosive method, as an important theme, has been studied by the Committee of Light Metals for Surface Treatment.
    This is one of the reports on testing the adhesion of paints film anticorrosion, and anticlimate of Lloyd sheet, as compared with those of 52S, under the following conditions.
    1) the Primer coat is given by Zinc-chromate.
    2) The ouer coat is given by Phthalic acid resin enamel.
    3) The conditions of undercoats treatment are as follows:
    a) Non-treatment
    b) Treated by phosphate alchol
    c) " " sand paper
    d) " " wash primer
    e) " " sand paper and wash primer
    f) " " wash primer after caustic soda washing
    Judging from all the tests abobe, Lloyd sheet is inferior to 52S in adhension of paints film due to the major component of oxide film during heat-treating process.
    It is considered as the best way for Lloyd sheet to apply wash primer after eliminating its oxide film dy caustic soda or sand paper.
  • 武藤 弘
    1954 年 1954 巻 10 号 p. 82-87
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    In the metalloid got in the lattice-space as interstitial structure of the titanium-metal, hydrogen does not influence on the strength and hardness, but on the impact.
    In the case of using as the parts of a machine, the reduction of the absorptiom level which depends on the impact force is very serious, even when a very small quantity of hydrogen (for example, 0.3-0.5 At. -%).
    Have the hatchings on microphotograph connection with this reduction, or not?
    To settle this quetion, I suggest an idea that "the pure titanium-metal has a face-centered cubic lattice phase between the body contered cubic lattice phase and the hexagonal close packed lattice phase".
    This face-centered cubic lattice comes to existence at about 600°C.
    According to the quantity of hydrogen contained titanium-metal, this transition from the face-centered cubic lattice to hexagonal close packed lattice is checked, this check induce the titanium-alloy to reduce the absorption level and to appear the hatching.
  • 荒木 喬
    1954 年 1954 巻 10 号 p. 88-92
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    A great many titanium alloys have two-fold ultimate tensile strength of a commercialy pure titanium, but such alloys ate few that can be used at elevated temperature and are creep resistant.
    Alloys containing aluminium, haveing a considerably higher transformation range, and the presence of this element also has the important effect of increasing the strength of the & phase at elevated temperature. these alloys can be easily welded and are heat resistant. Then alloys containing aluminium can be substituted for stainless steel.
    In this report, the present developing investigations with reference to the properties of Ti-Al alloys in U. S. A. and our results are described.
  • チタニウム中鉄分のロダン塩による吸光光度法検量線について
    北川 公, 相本 吉人
    1954 年 1954 巻 10 号 p. 93-98
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    Using of a Hitachi EPB-U type spectrophotometer, critical studies have been made of the ferric, titanium and thiocyanate systems in aquous solution. From the determined several spectral transmission curves, of which those shown are representative, the following conclusions are obtained. (1) Various formulas have been assigned to the colored complex present in aqueous solutions of thiocyanate systems. Our experiment also indicates the behaviour of color compounds are very complex. But obeys Beer's low in a certain region. (2) Relating to the use of thiocyanate method for the determination of iron in titanium, interference by the complex of titanium and thiocyanate a certain spectral band region in 0.7-1.0NH2SO4 acid solution is negligible.
    So that, the thiocyanate method can be use as control methods in commercial operation using a certain spectral band region.
  • 国本 隆
    1954 年 1954 巻 10 号 p. 99-111
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    It is remarkable that aluminium and its alloys have been utilized to the textile industry that is one of peaceful industries in Japan which has no aircraft industry after the second World War.
    The characteristics of aluminium and its alloys have been able to be prompted sufficiently, and therefore they are very much useful in the point of increase of production, improvement of quality and saving of management. I have written about following subjects by much experiences that have been gottnn for the last seven years.
    (1) Outline of the textile industry nowaday.
    (2) Characteristics of aluminium and its alloy that have been used in the field of textile industry.
    (3) Some problems of its design.
    (4) Actual examples that have been appiled to its part.
    (5) Development of new departments.
  • 軽金属協会
    1954 年 1954 巻 10 号 p. 112-115
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
  • 飯田 素貞
    1954 年 1954 巻 10 号 p. 116-119
    発行日: 1954/05/20
    公開日: 2008/10/30
    ジャーナル フリー
    During the past few years an extensive effort on the ad evelopment of Zr has been paid. Here the most reliable data for physical, chemical and mechanical properties are selected from the recently reported investigations and are shown.
    The properties of Zr have been useful in electronics and now particuraly in nucleonics as the structure material of thermal reactor. On the other hand many atempts hae been made to use it as one of the alloying constituents, and the most successful result is the magnesium casting alloy for aircraft industry.
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