Clean steel spectral standard sample and preparation method thereof

Abstract

The invention discloses a clean steel spectral standard sample, which comprises the chemical elements by weight percent as follows: 0.0017 to 0.0279 percent of C, 0.0100 to 0.0221 percent of Si, 0.118 to 0.271 percent of Mn, 0.0067 to 0.0108 percent of P, 0.0037 to 0.0056 percent of S, 0.0021 to 0.0064 percent of Ni, 0.0095 to 0.0176 percent of Cr, 0.0030 to 0.0135 percent of Cu, 0.0251 to 0.0649 percent of Ti, 0.0014 to 0.0466 percent of Alt, 0.00123 to 0.0030 percent of N, and the rest percent of Fe and inevitable impurities. The invention further discloses a preparation method of the clean steel spectral standard sample, which comprises the steps: a, smelting and sampling; b, forging; c, lathe machining; d, homogeneity examination; e, deterministic analysis of characteristic quantity values and the determination of each characteristic quantity value.

Description

technical field [0001] The invention relates to a standard sample for identifying low-carbon steel, microalloy steel and pure steel process materials for element composition analysis, in particular to a spectral standard sample for the pure steel smelting process. Background technique [0002] With the rapid development of iron and steel metallurgical technology in the world, in order to meet the needs of the market to produce high-tech and high value-added products, iron and steel enterprises have entered the stage of mass development and production of pure steel, ultra-low carbon and micro-alloy steel. The technical conditions and production capacity of pure steel smelting are becoming more and more mature, and the content of the six major elements P, C, S, O, N, and H can be controlled below 100ppm-120ppm. Can the elemental technical indicators of pure steel be accurately assigned? ——This problem has become the core problem of correct evaluation of pure steel. At the sa...

AI Technical Summary

Problems solved by technology

There are several problems in the product inspection of pure steel: first, the direct reading spectrometer does not have a pure steel spectral standard sample for calibration, and cannot establish a working curve for ultra-low content elements for quantitative analysis; second, the current metallurgical inspection industry only has low alloy steel and low-carbon steel standard samples, there is no standard sample of pure steel smelting process corresponding to the modern smelting process, so in the metallurgical inspection and analysis, only low-alloy steel or low-carbon steel can be used to establish the test and analysis of pure steel products method working curve

Since the spark direct reading spectrometer analysis is a relative spectral comparison method, there is a large matrix effect, and the use of such standard samples is likely to cause misjudgment by the inspectors, resulting in large errors in the online inspection of pure steel products

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