ANALYSIS OF IRON, STEEL OR THE LIKE

摘要

PURPOSE:To achieve a shorter time and automation by causing a discharge between the surface of a molten steel and an electrode rod provided at the tip of analysis tube body with an optical fiber to excite an emission which is transmitted to an analysis chamber to analyze. CONSTITUTION:An electrode rod 3 for emission made of silver, tungsten or the like is screwed into the center of the tip face of an analysis tube 2. A jig 7 is securely inserted into the outer surface on the tip side of the analysis tube 2 and an optical fiber 8 and a small electrode rod 9 for sensing the surface of a molten steel are buried into the surface of the tube. The tip of the optical fiber 8 is exposed to the inner wall surface of the jig 7 facing the tip side of the emission electrode bar 3 while the rear end is connected to an optical fiber 12. When the tip of the small electrode rod 9 reaches the surface 18a of the molten steel, an emission is caused with a discharge between the emission electrode rod 3 and the surface 18a of the molten steel and transmitted to an analysis chamber to analyze, thereby enabling automation with a shortened analysis time.