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輕合金の抵抗熔接に就て
https://jaxa.repo.nii.ac.jp/records/35496
https://jaxa.repo.nii.ac.jp/records/354964d0f8b50-7dec-420d-bc9f-26743cfd664c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA4148259.pdf (13.8 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||
| タイトル | ||||||||
| タイトル | 輕合金の抵抗熔接に就て | |||||||
| 言語 | ||||||||
| 言語 | jpn | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | departmental bulletin paper | |||||||
| その他のタイトル（英） | ||||||||
| その他のタイトル | Resistance Welding Light Alloys. | |||||||
| 著者 |
The, Resistance Welding Research Committee of A. R. I.
× The, Resistance Welding Research Committee of A. R. I.
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| 出版者 | ||||||||
| 出版者 | 東京帝國大學航空研究所 | |||||||
| 出版者（英） | ||||||||
| 出版者 | Aeronautical Research Institute, Tokyo Imperial University | |||||||
| 書誌情報 |
東京帝國大學航空研究所報告 en : Report of Aeronautical Research Institute, Tokyo Imperial University 巻 16, 号 210, p. 299-482, 発行日 1941-05 |
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| 抄録（英） | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | The application of the electric resistance welding of light metals and alloys to aircraft manufacturing is believed to contribute to the improvement of the quality of the aircraft, the increase of its production speed and the lowering of its production cost. In general, however, the properties of light metal, especially its high electric and thermal conductivities, give much difficulties to the resistance welding, and in order to perform such welding, we must make a heavy current flow through the contact point for a very short time, namely a fraction of a second. By the progress of the electric engineering, the possibility of the welding of this kind was recognized a few years ago, then it has been promptly developed, and at present it is already being put on production work in many aircraft factories. But if we observe the actual welding mechanism, we find that there are many variables which have influences on the welding results. They are as follows: 1) magnitude of welding current, 2) time of current flow, 3) mechanical pressure between electrodes, 4) material of electrodes, 5) shape of electrode tips, 6) material of the metal sheets to be welded, 7) thickness of the sheets, 8) surface conditions of the sheets. It is not easy to determine these variables exactly, or to keep them constant and, moreover, we can get good welds only when a proper combination of the variables is prepared. The investigation of the resistance welding of light metal requires wide knowledges extending over many engineering departments, and to make the welding mechanism clear, various kinds of experiments must be done. In the Aeronautical Research Institute of Japan, the investigation of the resistance welding of light alloys is being carried on since 1936 under the collaboration of its five departments, namely Aircraft, Electrical Engineering, Materials, Metallurgy and Central Work Shop. This report includes the general explanation about the resistance welding of light metals and the results of the investigations which we have got about the spot welding up to the present. As the results of the experiments, it has been generally proved that heavier the welding current, higher the shear strength of welds. But the difficulties for the welding increase with the current, especially in the case of thinner materials. A good many of the authorities on the subject have reported that in producing satisfactory welds, three of the variables-welding current, time and pressure-must be accurately controlled. According to the experiments in the Aeronautical Research Institute, however, the shape of electrodes is considered to be one of the most critical variables, when the electrode material is determined, and the proper values of current, time and pressure can not be recommended without the specification of the shape of electrodes. But, on the contrary, the effect of a slight difference of time is not so severe as ever described, so far as a symmetrical alternating current flows. At present the static shear strength of welds is already out of the question. By the shock test, the welds of 1.5 to 2.0mm thickness, have shown equal or better results compared with 5mm rivets. The repeated load test has been also carried out with welded test pieces, and in this case the welded joint seems to be inferior to the riveted one. We have taken measures to it, and can now put a heavier load on a test piece for the same repetition number, by giving some mechanical treatment on it. But this test is very important and we must make a more earnest study of it. We have yet many problems on the subject for the future. The study of seam-welding, the exact measurement of welding current and contact resistance, and the fatigue test of welds are now being prepared in the Research Institute. The development of good welding operators and the designing of welded aircrafts must not be neglected for the future aircraft manufacture. | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA00387631 | |||||||
| 資料番号 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 資料番号: SA4148259000 | |||||||
