2 0 0 0 OA 紀元2600年勅語奉読(一)
- 著者
- 近衛 文麿
- 出版者
- コロムビア(NHK)
2 0 0 0 OA 学問の自由と大学人の危機
2 0 0 0 OA 平安初期裏面より見たる日本歴史
2 0 0 0 OA 株式会社百卅三銀行創立五十年誌
- 出版者
- 百卅三銀行
- 巻号頁・発行日
- 1929
2 0 0 0 OA 官報
- 著者
- 大蔵省印刷局 [編]
- 出版者
- 日本マイクロ写真
- 巻号頁・発行日
- vol.1935年04月30日, 1935-04-30
2 0 0 0 OA 潜水艦"おやしお"の溶接工事について
Japan's first postwar submarine "Oyashio" was launched at No.1 Building Berth at Kawasaki Dockyard on May 25,1959. Representing the latest fabrication techniques in the construction of all-welded undersea craft, this vessel is now commissioned under the Japanese National Defense Agency.This paper deals with the records of fabricating and welding techniques used for the construction of this craft. Summerized below are the points worthy of special mention : 1) Used for inner hull structure were weldable high tension steels, HT 50 and HT 60,and various quality tests were performed on each of the steel plates used.2) The so-called unit cylinder assembling system was adopted in order to shorten the period of construction.3) The length as well as the fabricating sequence of the unit cylinder assembly were decided in accordance with the results of the fabricating tests on models.4) Many kinds of special jigs were devised in order to maintain the circularity of the inner hull structure and used successfully in the construction.