A Calibration Method for Spectral Analysis of High Carbon Alloy Steel

Abstract

The invention relates to a correction method for high-carbon alloy steel spectral analysis. The method includes the contents of: preparing alloy steel standard samples with different carbon content sections; performing analysis on a spectrometer; sorting and comparing the assay values and certified values of the standard samples; calculating correction coefficients with an element interference correction formula; setting an element interference correction coefficient in a spectrometer analysis program; establishing a routine sample analysis program; and reporting an analysis result. The methodprovided by the invention solves the problem that stainless steel smelting composition control affects the steelmaking rhythm and production planning adjustment, avoids the problems of analysis deviation caused by use of different control samples for correction and prolonged analysis period brought about by use of multiple control samples for correction, realizes fast and accurate analysis of high-carbon alloy steel (initial smelting period of stainless steel) samples, at the same time shortens the stainless steel smelting period, lower the smelting costs, and improves the stainless steel output. Compared with the traditional analysis and correction method, the method provided by the invention has faster analysis speed, and has great practical value for analysis of furnace-front stainlesssteel samples at an initial smelting period.

Description

technical field [0001] The invention relates to a calibration method for spectral analysis of high-carbon alloy steel, which belongs to the technical field of metallurgical analysis. The high-carbon alloy steel is an iron-based alloy steel with a C content greater than 1.0 percent and a Cr content greater than 12.0 percent. Background technique [0002] In stainless steel smelting, high-carbon alloy melt is the raw material in the early stage of stainless steel smelting, and the analysis of high-carbon alloy steel samples is an inevitable sample that needs to be analyzed in the process of stainless steel smelting. In the analysis, it was found that when the carbon content in the molten steel was high (C content greater than 1.0%) in the initial stage of stainless steel smelting, the conventional direct-reading spectroscopic analysis method often caused the analysis deviation of P, S, Cr, Ni and other elements in the sample to become larger. In particular, the analysis result...

AI Technical Summary

Problems solved by technology

However, the composition of the samples in the early stage of stainless steel smelting is complex, and there are often many calibration samples that need to be used. Therefore, the analysis of such samples is currently mainly performed manually with a spectral analyzer, which will have a certain impact on the sample analysis cycle.

At the same time, in the current mainstream fully automated analysis laboratories, due to the high degree of automation of the sample analysis process and the limitation of the automatic analysis program settings, the current samples cannot automatically use control samples with similar components for calibration analysis according to the element content, so At present, such samples cannot be analyzed in a normal fully automated process

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