Abstract
For a scientife control of the steel making process, it is indispensable to analyse a small quantity of gases in a finishing steel. The Orsat apparatus, which has been hitherto used for the purpose, has a fatal defect. In this apparatus the volume of gas is measured under a pressure of 1 atmosphere, so that the error incurred iu the volume-reading has a great influence upon the result.
The present authors prepared, therefore, a new analytical apparatus, in which a gas is measured under a reduced pressure and the effect of the error in the volume-reading becomes extremely small. In this patper, the apparatus is described and the results of the precise analyses of the gases, H2O, CO2, O2, H2, CO and N2 in steels are discussed.
