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24 巻, 9 号
選択された号の論文の8件中1～8を表示しています
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研究論文
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千々岩 健兒, 白髭 勝男1952 年 24 巻 9 号 p. 1-4
発行日: 1952/09/25
公開日: 2012/11/20
ジャーナル フリーThe relation between the condition of the rammed sand and compressive strength, permeability, water content, the ramming number and the weight of the test piece is investigated. To show the condition of the rammed sand we use a rate of height H ⁄ h, H is the height without the space among the sand grain and h is the measured value. We obtained the next results ; ① H ⁄ h 1−C log6 φ C : const. φ : permeability. ② The height of the test piece h and H ⁄ h have an important effect to compressive strength. ③ Compressive strength is inversely proportionate to permeability. ④ Water content is one of the most important factor of H ⁄ h.抄録全体を表示PDF形式でダウンロード (576K) -
鈴木 三郞, 奈良 秀夫1952 年 24 巻 9 号 p. 4-9
発行日: 1952/09/25
公開日: 2012/11/20
ジャーナル フリーWhen we use the oil sand core, we have not coated on its surface. But in this case, various troubles have happened. So we coated on the oil sand core for preventing the blow hole chiefly in the bore part of Datsun cylinder block. In this report we mention the experiment of 23 kinds of coating materials. With the result we recognized that the following coating material is best in regard to the coating method, casting condition and machining condition. ① Graphite (Soil) 90% + Molasses 10% ② Graphite (Soil) 90% + Clay (Shimizu) 10% ③ Graphite (Soil) 90% + Bentnite 10%
In each case, we have used as 100% H2O Solution.抄録全体を表示PDF形式でダウンロード (1149K) -
—湯口、湯道及び堰の大きさについて—大平 五郎1952 年 24 巻 9 号 p. 9-14
発行日: 1952/09/25
公開日: 2012/11/20
ジャーナル フリーIn a sand casting of aluminium, the relations between the sections of the gate, the runner and the sprue is discussed by measuring the metal flow in a particular way. The results obtained are as follows : (1) Metal flows generally with free surface in a runner not filling it up. (2) If the sectional ratio of the gate to the runner is large, metal is ready to flow into a sprue nearer to the end of the runner, but when the ratio is small, it is apt to flow into a sprue nearer to the gate. (3) In the casting with many sprues, metal flows uniformly into all the sprues if the sectional ratio of the gate to the runner has some limited value between 0.6∼1.7. (4) If the total area of the sprues is ¾ of that of the runner, the metal flows into them filling all the sections. (5) The adequate ratio of the sections of the gate, the runner and the sprue gotten from the present investigation is 0.6∼1.7 : 1 : 0.75. (6) If the section of the runner is lessened step by step, metal flows filling all the sprues though they have different ratios of sections mentioned above.抄録全体を表示PDF形式でダウンロード (742K) -
—板、円輪等内の湯流れについて—大平 五郎専門分野:
1952 年 24 巻 9 号 p. 14-18
発行日: 1952/09/25
公開日: 2012/11/20
ジャーナル フリーIn a sand casting of aluminium, the weak current is led to a flowing metal and the terminals are inserted at several points in the mould. If the flowing metal touches the terminals, it is indicated by the lamp in the circuit and is recorded on a paper with time scale. Thus the flow of metal in plate, in ring and in quadrilateral is measured and discussed.抄録全体を表示PDF形式でダウンロード (687K) -
—地学的に見た鑄物砂砂層の考察—河野 良治郎, 奥山 歳生1952 年 24 巻 9 号 p. 18-20
発行日: 1952/09/25
公開日: 2012/11/20
ジャーナル フリーInspecting a stratum of the west coast of Ise Bay by documents and by an actualiservey, the author inferred the occuring cause of layers of green sand in the neibourhood of Tsu and at the southern part of Sima Peninsula, and showed a help of development of green sand. (M. I.)抄録全体を表示PDF形式でダウンロード (604K) -
—志摩砂及び津砂に就て—河野 良治郎, 奥山 歳生1952 年 24 巻 9 号 p. 20-26
発行日: 1952/09/25
公開日: 2012/11/20
ジャーナル フリーThe characters of Sima-Sand and Tsu-Sand which the author discovered were inspected. The results obtained were as follows : Sima sand No. 1 is uniform in grain and has the best characters, which is, if added Bentnite etc., improved to become a remarkable material of synthetic sand. Grains of Sima-sand No. 2 and 3 are not uniform a little. Sima-sand No. 2 is coarser in grain but No. 3 is more fine. Tsu-sand is worse than Sima-sand. Tsu-sand No. 1 is too fine in grain to use and Tsu-sand No. 2 is generally available. The difference of grain distribution was recognized by the position of the sand stratum, and has a certain tendency, by which uniform sand in grain can be obtained. (M. I.)抄録全体を表示PDF形式でダウンロード (892K) -
加藤 孝三, 中島 繁夫1952 年 24 巻 9 号 p. 26-30
発行日: 1952/09/25
公開日: 2012/11/20
ジャーナル フリーIn the operation of a cupola, the blast enriched 4% oxygen was practiced for four minutes (a) shortly after the beginning of the blast, (b) shortly after the first tapping, (c) shortly after the beginning of the blast and the first tapping, and (d) when the tapping temperature became lower during the operation. The results were as follows : (1) The time from the beginning of the blast to the tapping was shortend and molten metal of a high temperature could be obtained from the first tapping. (2) The melting speed was fastened. (3) When oxygen was enriched during the operation, the tapping temperature became 10∼30°C higher and was kept more than 30 minutes. (4) The characters of material did not become worse by the enriched oxygen in the case of the coke ratio about 15%. In the coke ratio less than 12.5% molten metal was oxidized a little and therefore the enriched oxygen can not be available for save of the coke ratio. (M. I.)抄録全体を表示PDF形式でダウンロード (751K) -
1952 年 24 巻 9 号 p. 31-35
発行日: 1952/09/25
公開日: 2012/11/20
ジャーナル フリーPDF形式でダウンロード (810K)
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