Laser-induced plasma spectrum analysis system for measuring components of molten steel in vacuum furnace by utilizing sampling device

Abstract

The invention provides a laser-induced plasma spectrum analysis system for measuring components of molten steel in a vacuum furnace by utilizing a sampling device. The laser-induced plasma spectrum analysis system comprises a laser device, a laser leading-in system, a spectrum leading-out and collection system, a light splitting system, a spectrum receiving system and a to-be-detected sample chamber, wherein the spectrum leading-out and collection system comprises a spectrum leading-out subsystem and a spectrum collection subsystem; the laser device and the spectrum receiving system are controlled by an instruction sent by a pulse generator; laser emitted by the laser device is focused to a sample in the to-be-detected sample chamber through the laser leading-in system, so that a plasma isformed on the surface of a sample and a laser-induced spectrum is generated; generated fluorescent light is led out to the spectrum collection subsystem through the spectrum leading-out subsystem; elements in the sample are conveniently qualitatively and quantitatively detected through computing, processing and analyzing the collected spectrum; the to-be-detected sample chamber is a vacuum experiment cavity which simulates a vacuum smelting furnace; a to-be-detected sample sampling device fixed at the inner side of a top cover of the vacuum experiment cavity is a set of remote sampling devicewhich is remotely controlled through a computer and can be retracted.

Description

technical field [0001] The application field of the present invention is steel sample composition detection, especially a laser-induced plasma spectroscopic analysis device with a laser-induced light source pulse width nanosecond level for real-time on-line detection of molten steel sample composition under different vacuum degrees close to the metallurgical production environment. Background technique [0002] At present, there are laser-induced plasma spectroscopic analysis equipment with a laser-induced light source pulse width of a fixed nanosecond value for laser-induced plasma spectroscopic analysis of steel sample components in an air environment, and a laser with a laser-induced light source pulse width of a fixed nanosecond value. Induced plasma spectroscopic analysis equipment in ultra-high vacuum (general vacuum degree is 10 -1 to 10 -4 Laser-induced plasma spectroscopic analysis of steel sample composition in a Pascal) environment. [0003] The LIPS method was ...

AI Technical Summary

Problems solved by technology

[0006] In order to explore the influence of different environmental vacuum levels on the test results of steel samples under actual production conditions, and to overcome the technical defect of sampling difficulties caused by fluctuations in the surface of molten steel during the smelting process, the inventor developed a set of simulated vacuum including a remote sampling device The experimental system of the three main parts of the vacuum experiment chamber of the smelting furnace and the laser-induced plasma spectroscopic analysis equipment of the laser-induced light source with a pulse width of nanoseconds

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