酸化期における溶鋼のガス分析用試料採取方法

抄録

During the oxidizing process in steel-making, it is very difficult to take a suitable sample, beause a large amount of gases, especially oxygen is dissolved in molten steel. This paper gives a new sampling method for determination of gaseous elements in steel. A spoonful of molten steel is taken up with a ladle coated with slag and killed with 1% of aluminum wire against the molten steel. Then molten steel is sucked up from the ladle with a silica tube of 6 mm inner diameter. The results obtained are as follows: (1) The gaseous contents in molten steel are duly represented in the sample. (2) Segregation of gaseous elements in the sample is very limited. (3) Machining and holding the sample is easy. (4) The method is less expensive than any other methods.