抄録
Analytical method of hydrogen in iron and steel was accomplished in chiefly by Gakushin-Process, but in particulars it have to be improved. The authors studied the method of sampling from molten steel as well as treatment and analysis of the cast samples and concluded as follows.
1) Hydrogen contained in molten steel was very diffusible. Therefore, the cast sample must be analysed immediately after sampling or with the gas which captured in the glass-bell by mercury at room temperature
2) Scales of the cast sample combined with hydrogen in steels when analysing, and then the analytical value was decreased. So the scales of sample must be grounded off.
3) As hydrogen in steel was extracted in the form of methane, it must be analysed. For this purpose, it was convinient and exact that the volume of the residual oxygene was determined by addition of electrolytic hydrogen and then by its explosion.
