電弧鎔接法による鎔着金屬の電磁氣的性質に就て

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In this expriment author used various type of commercial electrodes and special made electrodes which were added Silicon, Aluminum, Phosphorus and Manganese in the coating material. The deposited metal from these electrodes were tested to find the electromagnetic property, mechanical property and change of these properties before and after aging and annealing. The results of this investigation are as follow : 1. The electric resistivity of the deposited metal from the low carbon bare electrode was comparatively small. Therefore it is suitable to weld the electric circuit. But the mechanical quality of the weld metal deposited from the bare electrode was inferior to that deposited from the covered electrode. 2. In the case of the magnetic circuit welding the deposited metal must have high permeability, low hysteresis loss and high electric resistivity. For these purpose it was applicable to use the electrodes that were coated with the proper quantity of silicon and manganese. However manganese itself is not directly to afford the good effects to the magnetic property of the deposited metal but it reduces the contamination of air to the deposited metal. 3. The deposited metal from the phosphorus coated electrode was a little better than that from the bare electrode. It was, however, so brittle that was readly cracked by light hammering. The iron aluminum alloys were similarly to the iron phosphorus alloys except under the critical quantity of aluminum. 4. The deposited metal in arc welding possessed in general the conspicu us aging property. However it was so much imp : oved that hysteresis loss increased with time as little as neglible if the electrode had coated with silicon and manganese. 5. The magnetic characteristcs of the deposited metal were much affected by the cooling rate of the metal, especilly, below 500℃. 6. The deposited metal from the manganese coated electrode developed the high tensile strength and that from the silicon coated electrode developed the high impact resistance. The deposited metal from the covered electrode with silicon and manganese had the superior mechanical properties. 7. Author indicated the microstructure of deposited metals from the various type of the coated electrode. In the presence of silicon, the grainsize was large. But if the manganese had been added to the electrode, grain-size of the deposited metal was fine. Up to the quantity of phosphorus reached 0.5% in deposited metal, author found the characteristic sharp needle structure in it. 8. The welded metal of the low carbon steel by the atomic hydrogen weldlng process possessed the good electromagnetic and mechanical properties. But it had a considerable aging effect in magnetic characteristics. 9. The silicon coated eletrode was practically impossible to be deposited by the electric are process on account of the large grobule of the electrode dropped down. However the silicon and manganese coated electrode was possible to obtain the deposited metal with some difficulties.
社団法人日本鉄鋼協会の論文
1934-07-25

電弧鎔接法による鎔着金屬の電磁氣的性質に就て

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