著者

高瀬 孝次

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.22, no.2, pp.107-120, 1936-02-25 (Released:2009-07-09)

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Owing to the marked increase of aero-engine power, number of revolution, compression ratio, etc., crankshaft should inevitably biar the vibrational and duplicated over-stresses. The crankshaft should, therefore, not only be of the best chemical composition, most properly heat-treated, the latest metallurgical procedure being applied, but also of the most perfect design, in addition to the minimum weight and size.The writer has published a part of this investigation in the "Tetsu To Hagane" Vol. XIX, No.4 In this paper, in order to select the most suitable steel for the future, the notch effect in regard to the endurance properties and the influence of heat-treatment of these steels have been investigated.An investigation of crankshaft steel on the relation between the mechanical test results and the endurance properties by fatigue test have also been executed, and the writer has introduced a new method for determing the endurance limit in stead of laborious fatigue test.As a conclusion, the writer has suggested future requirements for the aero-engine crankshaft steel, considering all the facts above mentioned.

著者

三島 徳七 三橋 鐵太郎

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.28, no.2, pp.117-136, 1942-02-25 (Released:2009-07-09)

参考文献数

49

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Die Schleiffunken der allen Stahlsorten haben kenzeichnende Merkmale. Die Funkenprobe bildet daher ein einfaches und weitverbreitetes Mittel zur Feststellung der Werkstoffzusammensetzung und zur Vermeidung von Werkstoffvermischung.Ein Teil dieser Arbeit, über den hier berichtet wurde, sollte Genauigkeit dieser Funkeprobe fur C-Stähle, auch die Zusammenhang zwischen die Funkenformen und die Menge der speziellen Elementen, wie Ni, Cr, Mn, Si, feststellen.In Fe-C-Mn Legierungen befindet sich ein schwerfunkbares Gebiet. Die Abhängigkeit von der Härte und dieser Schwerfunkbarkeit wurde nicht festgestellt.Karbide im Gusseisen ist immer schwerfunkbar, welches nach Graphitisation beim Ausglü hen wieder wesentlich funkbar wird. Das Gleiche wird auch im Cr-Gusseisen festgestellt, welches in Abhängigkeit von der steigernden Al Gehalten allmählich schwerfunkbar wird.Das Gefüge der amerikanischen handelsübrigen nichtfunkbaren Legierungen, die zu Ni-Cr-und Fe-W-Cr-VLegierungen (z.B. 18-4-1 Typus) gehören, besteht aus Austenit und Karbide.

著者

蒔田 宗次

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.24, no.12, pp.1106-1112, 1938-12-25 (Released:2009-07-09)

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Participated in work of the party engaging specially in the repair of Japanese swords in the front, the author observed the superiority of Japanese swords in the light of the present Sino-Japanese fighting.It is a well-acknowledged fact that the Japanese sword has an excellent sharpness. Its splendid effect has invariably been shown in action at the present crisis, there being many instances to be quoted from numerous exploits in the actural occasions.A large number of Japanese swords being used in the front, sword makers are naturally very busy at present.We know the physical effect of the Japanese sword from its sharpness as well as the user's skill. Besides the most important matter is our strong faith for the Japanese sword. Consequentty, the mental effect of it against the enemy is very powerful with the action of the "Japanese spirit" in it.Therefore, we observe the Japanese sword not only materially but also spiritually. In short, the Japanese sword is considered to be a spiritual material, which stands to guard strongly and to prosper eternally the Land of Our Mikado.

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.27, no.8, pp.620-636, 1941-08-25 (Released:2009-07-09)

著者

的場 幸雄

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.20, no.12, pp.837-847, 1934-12-25 (Released:2009-07-09)

参考文献数

38

被引用文献数

3

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In the main part, author treats the equilibrium of Fe-C-O2-system at steel making temperatures by melting carbon and oxygen bearing iron in the gas stream of carbon mono-oxide and dioxide mixture. As the results of his experiment, it was proved that the oxygen content of the molten steel in equilibrium with the gas phase, is proportional to the ratio pco2/pco, and carbon content to p2co/pco2. On these accounts, he proposed that the two equilibriums, FeO(Fe)+CO=Fe+CO2 and C(Fe)+CO2=2CO, should be considered simultaneously as the carbon-oxygen equilibrium in steel making process instead of FeO(Fe)+C(Fe)=Fe+CO as was usually accepted. Further he constructed also the equilibrium diagram of Fe-C-O2-system qualitatively in the region of molten steel.As an appendix of his main paper, he described the hydrogen reduction method of oxygen determination in iron and steel. Some remarkable points of his method of determination are in the treatment of reduction products, H2O, CO2 and CO. Here H2O was absorbed by P2O5 and CO2 by soda lime as usually, CO is oxidized by I2O5 to CO2 selectively and after retaining free iodine with metallic copper chips, secondary formed CO2 absorbed by soda lime and weighed.

著者

佐々川 清

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.9, no.6, pp.489-505, 1923-06-25 (Released:2009-07-09)

著者

絹川 武良司

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.25, no.3, pp.163-174, 1939-03-25 (Released:2009-07-09)

著者

俵 國一

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.6, no.4, pp.337-368, 1920-04-25 (Released:2009-05-26)

被引用文献数

2 1

著者

YI

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼

巻号頁・発行日

vol.2, no.5, pp.534-540, 1916

著者

俵 國一 本間 清人

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.6, no.2, pp.171-189, 1920-02-25 (Released:2009-07-09)

著者

三島 徳七 三橋 鐵太郎

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.28, no.9, pp.959-968, 1942-09-25 (Released:2009-07-09)

参考文献数

2

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Die Untersuchungen erstreckten sick auf C-Stähle, Cr-Stähle, Cr-Ni-Stähle, Cr-Mo-Stähle, die in Form von geschmiedeten and gegossenen Rundstangen sind. Versuche uber den Einfluss von Schmieden auf Funkbarkeit von C-Stähle. Versuche uber den Einfluss allerleien Warmebehandlungen auf Funkbarkeit von Ni-Cr-Stäble. Versuche über die Wirkung des Cr-, Mooder Ni-gehaltes auf Funkbarkeit der C-Stähle.

著者

佐々川 清

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.15, no.3, pp.201-224, 1929-03-25 (Released:2009-07-09)

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According to the industrial progress, it is evident that the demand is going up to get large steel mass having the great stiffness and toughness. This problem will be solved by using some alloy steels in spite of plain carbon steel. To have good alloy steel it is necessary that the large mass is thoroughly uniform.Some special properties of alloy steels are investigated and described here.1) Mass effect;: -Steels used are plain C-steel, Ni-steel, Cr-steel, Ni-Cr-steel, Ni-Cr-mo steel, long rods of various diameters are forged from ingots, Annealed and quenched in water and in oil from hardening temperature. Hardeness change through the sectional area is measured, Theoretical interpretation is made on the phenomene of mass effect, concerning to the chemical composition, cooling velocity and the mass, 2) Residual stresss due to heat treatment;: -Several methods to measure the internal stress are described, Some experiments are made to research the residual stress due to heat treatment in using large mass of alloy steels, Some methods to eliminate the residual stress are discussed, 3) Temper-brittleness;: -The phenomene of temper-brittleness is described, To ascertain the relation between the temper-brittleness and tempering temperature, some experiments are made, Conclusion;: -To have good alloy steels of large mass, it is necessary to select the steel without or least mass effect. To avoid the effect of residual stress due to tempering, it must be reheated to a high temperature for some hours, but the temperature must be selected that no temper-brittleness well occur.

著者

虎岩 頼夫

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.29, no.7, pp.614-618, 1943-07-25 (Released:2009-07-09)

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The author has experimentally manufactured various kinds of piano wire since Showa 15 (1940) from the necessity of the domestic manufacture of piano wire. In the present report, some properties of different kinds of domestic wire were compared with the imported products. It was confirmed that the quality as good as the imported products are now available in the wholly domestic wire, although more efforts are expected for the manufacture of better qualities. Above all, he mentioned of the brittleness appearing in the low-temperature heating and laid stress on its preventive methods. As the fundamental data, the result of the test on the effect of drawing speed, was described with special reference to the prospect of the X-ray study necessary therefor.

著者

福島 政治

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.40, no.12, pp.1128-1142, 1954-12-25 (Released:2009-07-09)

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Side-blown baby-bessemer converters are employed in foundries for the production of steel castings, in U.S.S.R. recently, however, a large number of this type of converters are also used for the production of steel ingots under a new name of "Soviet Union's Process." And also, they assert that steel made by the side-blown converters have lower gas content and higher resistance to the low-temperature shortness than the others made by the open hearth furnace. The distinctive point of this new process is to use the over-heated low-Si molten pig iron (0.3-0.5% Si, 1400-1450°C) in the converter. Therefore, it seems to be nearly identical with the old Swedish process, but they maintain that it is their own process.Normally, in the baby-bessemer process, or in the high-or medium-Si process, they refine hematite pig iron, which is usually melted in usual cupolas. In works producing steel ingots by this new process, however, the cupolas are of a special design and the charge employed contains high percentages of steel scrap (90-95%), which is partially recarburized before blowing in the converter.From the results of several practical studies on the high Si Process (>1.6% Si), the medium Si process (1.1-1.6% Si), the low-Si process (<1.0% Si) and this new process by a 1.5t converter in each, merits of this new process were pointed out as follows;a) The shortening of the blowing time.b) The lessening of the blowing-loss of molten metal.c) The increasing of the steel scrap in the raw material of cupola.In the Chinese communist region, lately, in some works this type of converters are also used for the production of steel ingots, and they are blowing the comparatively lower Si molten pig iron (0.8-1.2% Si, 1300-1350°C) in the converter. It may be said that, from the great demand of steels in that region, this simple process will be developed more and more in future.

著者

蜂谷 茂雄

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.28, no.6, pp.613-626, 1942-06-25 (Released:2009-07-09)

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The Yawata Iron Works have intended to practise the pig-ore process in the 100ton open hearth furnace being supplemented with the mixer for preliminary smelting.However, owing to shortage of the capacity of the mixer, they are partly obliged to practise the ordinary pig-ore process by using the open hearth furnace alone. The author explained the pig-ore process by the parallel use of an open hearth furnace and a mixer, citing the actual operations with special reference to the control of slags which is necessary for the open hearth furnace smelting. Moreover, the author described the actual operation of redressing the hearth which plays the important role in improving the efficiency of the pig ore process, some points of improvement in the body of the open hearth furnace developed since beginning and informed experiences and results of using the mixed gas as fuel.

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.3, no.11, pp.1163-1185, 1917-11-25 (Released:2009-07-09)

著者

内山 道良

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.37, no.1, pp.45-56, 1951-01-25 (Released:2009-07-09)

参考文献数

57

被引用文献数

2

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Since the end of the War, spring steel has become one of the most important special steels in Japan.In 1948, the production of spring steel amount to 29, 714 tons in the total amount of special steel production of 87, 136 tons. Meanwhile the level of quality of spring in Japan, may be lower than that of in America and in Europian countries. Therefore, for general reference, the auther collected here the various recent data of spring steel, such as the history, chemical composition, mechanical property, heat treatment, mass effect, cold working etc, which will be thought to be useful for manufacturing spring and spring-steel.

著者

K.O.

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.4, no.12, pp.1301-1315, 1918-12-25 (Released:2009-07-09)

著者

齋藤 泰一

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.35, no.4, pp.98-103, 1949-04-25 (Released:2010-01-22)

参考文献数

9

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The reaction of chromium under basic, slag has been experimentally studied in laboratory furnace. In the basic slag (CaO/SiO2>2), it was found that the oxide of chromium presents as chromic-oxide, so the reaction of chromium under basic slag should be cxpressed as follow:-2[Gr]+3(FeO)_??_(Cr2O3)+3[Fe]The auther proposed as the temperature coeffcient of the equilibrium consant KBCr=(Cr2O3)/[Cr][Cr]2(FeO)3 of this reactionlog KBCr=15, 000/T-10.0

著者

三島 徳七 椙山 正孝

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.30, no.8-9, pp.233-234, 1946-01-25 (Released:2009-07-09)