鹽素法に依る鋼中の非金屬介在物の定量法に就て : (第一報)鐵及び炭素鋼

スポンサーリンク

概要

• 論文の詳細を見る

• In the present experiment to determinc non-metallic inclusions in carbon steels the author tested some samples by means of the chlorine method adopted by Roland Wasmuht or E. W. Colbeck. However, in this method it was found that since the residues had been washed only with hot water after chlorination, exceedingly large amount of residues contaminated by the ferric hydroxide and silica gel were obtained, which had been produced by the hydrolysis of ferric and silicic chlorides remaining on boat ; and that the total oxygen content calculated from the value of these oxides was three or five times greater than that obtained by the vacuum fusion method. Accordingly, in order to eliminate these contaminating substances the residues were washed in the following order : -first with hot water, then by turns with hot 5% hydrochloric acid, hot water, hot 5% sodium carbonate solution, hot water, hot 5% hydrochloric acid, and finally with hot water. The chlorine method with the aforementioned improved washing procedure was applied to a number of killed steels, and the total oxygen content was found to agree precisely with the residues obtained by the vacuum fusion method. In the case of killed steels in which the ferrous and manganous oxides content were relatively low, non-metallic inclusions could be determined easily by the present method. However, steels with high content of these oxides were liable to be attacked, to some extent, by washing with the 5% hydrochloric acid washing. Therefore, the author extracted the residues after chlorination in the 5% sodium citrate solution (pH 7) to prevent ferric chloride from hydrolysis, then filtered and washed the residues with the 5% sodium carbonate solution to exclude the silica gel. In this procedure the total oxygen obtained by the chlorine method and the vacuum fusion method were in good agreement even in steels containing high percent inclusions of ferrous or manganous oxide.

• 社団法人日本鉄鋼協会の論文
• 1941-12-25

著者

• 森脇 和男

  日本特殊鋼株式会社

関連論文

• 21 カントレコーダーによる日常作業分析について(製鋼, 第 55 回講演大会講演大要)
• 77 砂疵発生率と製品組成の関係について(製鋼, 日本鉄鋼協会第 60 回(秋季)講演大会講演大要)
• 60 砂疵(毛疵を含む)防止を目的とした鋼の無酸化鋳造(製銑および製鋼, 第 55 回講演大会講演大要)
• 鹽素法に依る鋼中の非金屬介在物の定量法に就て (III)
• 鹽素法に依る鋼中の非金屬介在物の定量法に就て : (II) 含クロム合金鋼
• 鹽素法に依る鋼中の非金屬介在物の定量法に就て : (第一報)鐵及び炭素鋼
• 18) 鹽素法に依る鋼中の非金屬介在物の定量法(日本鐵鋼協會第 24 囘講演大會講演大要)
• 鐵・クロム・銅系平衡状態圖

スポンサーリンク