鋳物

研究論文

鑄鉄素材の研究（第3報）

—各種銑鉄の性質とその使用成績に就いて—

木下禾大, 中島益雄, 木下勝行

1951 年 23 巻 11 号 p. 1-8
発行日: 1951/11/25
公開日: 2012/11/22

DOIhttps://doi.org/10.11279/imono.23.11_1

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  For researching the properties of cast iron, we had investigated the relation between O₂ content, mechanical strength and graphite structure, and reasoned "Virginity" of pig iron would have a strong effect on the properties of cast iron, which has been commonly believed but its cause has not been found.
  Recently, it is considered that its causing subject may be dissolved gases (O₂ H₂ and N₂) and minute oxides.
  So, chemical composition, dissolved gases—H₂ and O₂—in pig and cast iron were analyzed and the effect of these factors on mechanical strength, graphite structure and castability were also studied.
  The results obtained were as follows :
1. H₂ and O₂ content in pig iron exerted influence on iron casting properties and increased by the production method-raw materials and fuels-as follows.

  [m. s. scrap] ･ [coke] < [ore] ･ [charcoal] < [ore] ･ [coke]
2. Repeated shock value of cast iron was severely influenced by graphite structure.
3. Swedish, Ogure and Arisa pig iron showed good results.

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シルミン溶湯の流動性の研究

南波栄吉, 武谷良明

1951 年 23 巻 11 号 p. 8-13
発行日: 1951/11/25
公開日: 2012/11/22

DOIhttps://doi.org/10.11279/imono.23.11_8

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Experiments were carried out on the fluidity of silumin using a spiral type of metal mould to determine, (a) the effects of the pouring and mould temperatures, (b) the comparison with Al at a given temperature of pouring, (c) the effects of repeated melting, (d) the effects, of Fe and Zn, and (e) the effects of Mn, Cr and Cu on the fluidity of silumin containing more than 1.5% of Fe. The following results were obtained :
(1) For a given temperature of pouring, the fluidity of silumin is much greater than that of pure silumin. (2) In proportion to the pouring and mould temperatures, the fluidity becomes greater and the effect of the pouring is 2.36 times greater than the mould temperature. (3) Repeated melting lowers the fluidity, especially at the 2nd to 3rd melting. (4) with increasing of Fe content in silumin, the fluidity becomes greater up to aboute 1% of Fe, above which lowers the fluidity. (5) Zn has effect on the fluidity of silumin up to about 3 to 4% of Zn, above which increases the fluidity. (6) The fluidity of silumin containing more than 1% of Fe is improved by the addition of certain amount of Mn. The most effective amount of Mn equals to about 70% of Fe content. Cr seems to have no effect on the fluidity of the silumin, while Cu improves the fluidity of the silumin a little up to about 2.5% and much more at above 5% Cu.

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冷風式熔銑爐による再生銑の製造に就いて

小宅通, 中野源一

1951 年 23 巻 11 号 p. 14-22
発行日: 1951/11/25
公開日: 2012/11/22

DOIhttps://doi.org/10.11279/imono.23.11_14

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The Revived Pig Iron has manufactured by the hot blast cupola generally, but the present writers have in justrially manufactured by The Cold Blast 1 ton Cupola in Akita Steel Manufacturing Co. Ltd. (January and February 1950), using the AST alloy which is byproduct in alumina manufacturing of dry method.

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鑄型表面の鋳物砂安定性に就いて

西原初馬

1951 年 23 巻 11 号 p. 22-25
発行日: 1951/11/25
公開日: 2012/11/22

DOIhttps://doi.org/10.11279/imono.23.11_22

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  Author made a study of stability of moulding sand by mixture of ōgin, pine resin, vinyl chloride and etc. by scratching method, and got following results.
  1. It increases stability to plaster on surface more than mixes binder in the moulding sand.
  2. The drying temqerature are 200°C and drying time 1.5 hours.

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機械込用生型砂の理想的水分

—特に其の粒度示数との関係に就いて—

和泉純夫

1951 年 23 巻 11 号 p. 26-28
発行日: 1951/11/25
公開日: 2012/11/22

DOIhttps://doi.org/10.11279/imono.23.11_26

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  Generally moisture control of the raw sand without coating, as raw machine molding sand, needs skill at the time of sand-mixing, moreover if it is not controled in proper moisture, it can not be called the good sand.
  Ther upon I investigated about ideal moistures of sands, especially in connection with its fineness number, in accordance with the relation of moisture sand and its physical test values.
  The results of this experiments are as follows :
1) The moisture is nearly same when permeabiliry and transverse strength of sand showes the maximum.
2) The ideal moisture of sand is increased gradually, according as its fineness number becomes greater.

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鑄鋼用電弧爐の天井及び天井煉瓦に關する調査報告

（鑄鋼研究委員会報告第3報）

瀧川廉雄

1951 年 23 巻 11 号 p. 28-34
発行日: 1951/11/25
公開日: 2012/11/22

DOIhttps://doi.org/10.11279/imono.23.11_28

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