鑄鐵中の水素分析に就て

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For the determination of hydrogen in the cast iron, vacuum extraction method of the steel is studied, and gained the following results. 1. The test piece of 15mmφ are in cast in the copper mould and quenched rapidly in the Hg bath. By this method, the test piece are white pig iron, and no quenching crack are seen. 2. Extraction temperature of hydrogen should be 900℃. 3. Hydrogen in the cast iron do not escape from the piece at room temperature. So that analysis is not necessary to carry out as soon as the test piece is cast. 4. The results of the analysis are reliable, and will be useful for the determination of hydrogen in the cast iron. By the procedure above described, analysis were carried out in the some cast iron, and we gained the following results. 1. Hydrogen in the cupola melt cast iron is smaller than that of the electric furnace melt cast iron. 2. Si content of the cast iron effect the analysis value and hydrogen in the high Si cast iron is smaller than that of the low Si cast iron. As the conclusion, this procedure is not absolute one for the analysis of hydrogen, but for the cast iron of the about same composition, the comparative valve will be gained, and be useful for the investigation of the graphite structure in the cast iron.
社団法人日本鉄鋼協会の論文
1951-02-25