関西造船協会誌

表紙

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p. Cover1-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_Cover1

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目次

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p. Cover2-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_Cover2

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[OTHERS]

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p. App1-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App1

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移民船あるぜんちな丸について

甲斐敬二

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p. 1-12
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_1

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The "Argentina Maru" is the second ship built in Japan after the last World War which is originally designed as an emigrant ship. Her length and depth are same as the first ship "Brasil Maru", but many improvements have been made on various items. This paper takes up the most outstanding points out of them, such as, to pay more attention to stability, to adopt the sprinkler system for fire protection, and to adopt constant running system for water supply, etc.

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海水管の腐蝕について

高畠敏男, 藤尾博之

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p. 13-19
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_13

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In this paper authors give the information in designing sea water pipes and their fabrication in relation to the corrosion, that is, about the investigation on corrosion tests and the cause of corrosion suffered by the solder wiped copper pipes and plain copper pipes. Authors also express the results of the investigation on the corrosion rate of steel pipe and galvanized steel pipe joined in series through which passed sea water involving air bubbles and also on the state of galvanic corrosion in a case a steel pipe and a copper pipe were joined. The followings are the particulars of the investigation. 1) The cause of pitting that developed on solder wiped copper pipes in a very short time was due to the production of noble copper tin alloy in the boundary of the copper-solder. Experimentally it was ascertained that the potential of this alloy rapidly roses in the percentage, copper-tin contents 50-50, and becomes nobler than the copper. Copper pipes also corrode sometimes within comparatively short time, but such is mostly erosion. Ships now tend to be built much larger and of much higher speed, under such circumstance, the mixture of air bubbles in sea water is bound to become higher in percentage and which is assumed to be one of the causes of the promotion of corrosion. 2) Under such unfavourable condition, the galvanized steel pipe seems to be highly resistant to erosion and at the same time to have sufficient resistibility against corrosion. At the corrosion test of pipes with running sea water about one month, the corrosion rate of galvanized steel was unexpectedly small. 3) The development of galvanic corrosion, when a copper pipe and a steel pipe were connected, was limited within a close neighbourhood of the connection, and is concentrated within the range of, in a still water about 2-3 times of the diameter and in running water about 1.5 times of the diameter. To insert a zinc anode at connection is very effective, but just for the purpose of eliminating galvanic corrosion, Swedish iron (pure iron) serves the purpose just as well.

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船用デイーゼル発電機潤滑油の管理について

笠間義郎, 大岡則隆, 橋本忠幸

原稿種別: 本文
p. 20-25
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_20

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In recent years, the "control" of lubricating oil in diesel ships becomes an important matter for engineers by the use of C fuel. The properties of lube oil have a great influence on the maintenance of the supercharged diesel generators, The following are the essentials grasped by a few years survey on the control of lube oil. Unlike for the land engines, the condition of consumption for marine diesel generators plays an important role in the balance of lube oil consumption in the ships. The consumption of main engine oil and regenerated wast oil of diesel generator increases with the lapse of time of engine operation. Accordingly the decision of oil change time is of importance for oil control. Its interval should be determined considering the next four items. (1) Engine maintenance and prevention of damage. (2) Interval of engine overhaul. (3) Lube oil consumption in ship. (4) Lube oil properties. Because of the advance of high powered engine and severe demand for lube oil, oil flushing and use of heavy duty oil will become problems for oil control in future.

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圧力勾配のある乱流境界層の混合距離と剪断応力分布について

笹島秀雄, 田中一朗

原稿種別: 本文
p. 26-32
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_26

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The writers previously investigated the mixture length and shearing stress distribution in divergent and convergent flows of Nikuradse as typical flow under pressure gradient. The present paper is the extension of the former to general boundary layer flow. First of all they study an approximate expression of shearing stress distribution in the near wall region and show an advantage of using the effective pressure gradient instead of its nominal value. This idea is based on the correction due to acceleration terms in equation of motion. Through analogy to channel flows, they assume approximate distributions of mixture length and shearing stress in simple analytical forms as functions of η and β_<δe>. The notation used is listed below. By substituting the above quantities in their modified momentum relation velocity distribution is calculated. By the proper choice of β_<δe>, which is approximately a function of β_δ only, a fairly good agreement between calculated and observed results is obtained. This fact also implies that both the idea of the effective pressure gradient and expressions of mixture length and shearing stress distributions are proper in practical purpose. It is finally suggested that the ordinary method of solution using outer law of velocity distribution may be usefully improved by the adoption of the effective pressure gradient.

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梁の曲げにおける剪断の影響について (つゞき)

松浦義一

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p. 33-38
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_33

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貨物船ぼんべい丸について

大阪商船株式会社工務部, 株式会社名村造船所設計部

原稿種別: 本文
p. 39-43
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_39

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甲型警備艦「いそなみ」について

新三菱重工業株式会社神戸造船所造船設計部艦艇設計課

原稿種別: 本文
p. 44-46
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_44

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本会記事

原稿種別: 付録等
p. 47-48
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_47

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ほのるる丸

原稿種別: 付録等
p. App2-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App2

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はんぶるぐ丸

原稿種別: 付録等
p. App3-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App3

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明祥丸

原稿種別: 付録等
p. App4-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App4

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ぼんべい丸

原稿種別: 付録等
p. App5-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App5

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かんべら丸

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p. App6-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App6

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第二播磨丸

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p. App7-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App7

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CALTEX ARNHEM

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p. App8-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App8

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SIRI

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p. App9-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_App9

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裏表紙

原稿種別: 表紙
p. Cover3-
発行日: 1958/07/30
公開日: 2018/02/24

DOIhttps://doi.org/10.14856/kansaiks.90.0_Cover3

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