真空二重鉄管製サンプラーによる溶鋼水素の定量

概要

論文の詳細を見る
It is necessary to grasp the behavior of hydrogen in refining process accurately and rapidly, in order to produce low hydrogen steel by degasification treatment. From this viewpoint, a study was made, through comparison of hydrogen analytical value using double tube sampler and that using conventional quartz tube sampler to establish the technique for accurate determination of hydrogen in molten steel. (1) Hydrogen analytical value using double tube sampler is more accurate than that using quartz tube sampler, because double tube sampler can catch almost perfectly evolved hydrogen in solidification and cooling processes of the sample. Hydrogen analystical value by double tube sampler is 2.5 to 3.5 times that by quartz tube sampler in molten steel containing 0.05%C. (2) Fraction of diffusible hydrogen to total hydrogen is different depending on C, Cr and Ni contents in molten steel. (3) Reliability of this method expressed by the standard deviation is 0.11-0.25 ppm and these values are good enough for application to actual production control of refining process.
社団法人日本鉄鋼協会の論文
1989-01-01