| 摘要 |
PURPOSE:To decrease errors, by sampling molten metal into a part of a sampling vessel which is beforehand evacuated to a vacuum, putting the vessel into a gas capturing vessel which is shielded from the amt. air and breaking the vessel wall in the space formed of the drawing vessel and the solidified metal. CONSTITUTION:When the part of a suction port 10 formed by decreasing the thickness in a part of an internally evacuated drawing vessel 9 is dipped in molten metal, said part is eroded, and molten metal is sucked into the vessel where the molten metal fills the inside of a conduit 11 made of a preliminarily dehydrogenated thin steel plate and arrives at a preliminarily dehydrogenated chiller 12 solidifies by closing vent holes 13. The molten metal is drawn in a part of the vessel 9 and the vessel 9 is put into a gas capturing vessel which is shielded from the atm. air. The vessel wall in the space formed of the vessel 9 and the solidified metal is broken. The amt. of the hydrogen captured in the space and the hydrogen released from the solidified metal are determined, whereby the exact result of the analysis is obtd. with good accuracy. |
