METHOD FOR ANALYZING NITROGEN IN METAL SAMPLE APPARATUS FOR ANALYZING NITROGEN IN METAL SAMPLE METHOD FOR ADJUSTING NITROGEN CONCENTRATION IN MOLTEN STEEL AND METHOD FOR MANUFACTURING STEEL

摘要

A method for analyzing nitrogen in a metal sample, a nitrogen analyzer in a metal sample, a method for controlling nitrogen concentration in molten steel, and a method for manufacturing a steel, which accurately and low-costly determine the content of nitrogen in a metal sample. A method of analyzing nitrogen in a metal sample of the present invention is a method of melting a metal sample containing a nitrogen component by an impulse heating under an argon gas atmosphere and melting the nitrogen component and a nitrogen gas And an analysis step of analyzing the argon gas by a gas discharge light emission method and quantifying nitrogen in the metal sample. The nitrogen concentration of the sample taken from the molten steel is analyzed by the above analysis method, the treatment conditions for adjusting the nitrogen concentration by the nitrogen analysis value obtained by the analysis are determined, and the nitrogen concentration in the molten steel is adjusted.