DIRECT ANALYZER OF MOLTEN METAL BY FINE PARTICLE GENERATING PLASMA EMISSION SPECTROCHEMICAL METHOD

摘要

PURPOSE:To analyze directly molten metal constituents simply and rapidly in an operating site by performing a spark discharge by using a high voltage between a molten metal and a counterelectrode in a cooling tube, and introducing the evaporated and generated fine particles to an analyzer together with an inert gas. CONSTITUTION:If the spark discharge is performed by impressing a high voltage between the counterelectrode 8 and the sample electrode 17 while blowing in gaseous Ar, the ultrafine particles of the molten metal are evaporated and generated. The fine particles are carried through a fine particle carrying tube 22 together with the gaseous Ar, excited and emitted by a plasma torch 29 of the analyzer 37 and analyzed.Thereby each constituent content of the molten metal can be measured directly and in a short time without sampling.