Preparation method of standard sample for spectrum analysis

A technology of spectral analysis and standard sample block, which is applied in the field of preparation of standard sample block for spectral analysis, can solve problems such as loss, delay of analysis time, and large error in element content analysis, so as to reduce development cost, increase analysis time, and simplify the process Effect

Active Publication Date: 2008-03-19
TIANJIN PIPE GROUP CORP
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Problems solved by technology

Since these samples are not real control standard steels, there are many problems in actual use, mainly as follows: 1. When analyzing samples, it is necessary to analyze multiple control standard steels (generally 3-4 pieces) at the same time to control the main elements and its content (C/carbon, Si/silicon, Mn/manganese, P/phosphorus, S/sulfur, Ni/nickel, Cr/chromium, Mo/molybdenum, V/vanadium, Ti/titanium, Al/aluminum, etc.), Therefore, the analysis time is delayed (smelting analysis requires that each sample should not exceed 5 minutes); 2. The control standard steel lacks residual trace elements (Ca/calcium, B/boron, Nb/niobium, Cu copper, etc.), especially the five harmful elements (Pb/lead, Sn/tin, As/arsenic, Sb/antimony, Bi/bism

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  • Preparation method of standard sample for spectrum analysis
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  • Preparation method of standard sample for spectrum analysis

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[0054] In the following, in conjunction with the drawings and in accordance with the requirements of the national standard GB / T15000, the process of the preparation method of the standard sample block for spectral analysis of the present invention and the use process of the standard sample block for analysis and detection are briefly described.

[0055] Proceed as follows:

[0056] 1. Screen steel grades

[0057] The urgently needed continuous casting round billets are screened out from 7-8 thousand furnaces and nearly 100 steel grades produced by the electric furnace each year. The length dimensions are approximately: Φ0.27×0.7m, Φ0.21×1.0m, and 10 steel grades are selected. ; Namely: 27MnCrV, 26CrMo 4S / 1, 28CrMo 47 V, 2Cr 3 Mo, T91, 37Mn / 1, 27CrMo 27S , 20CrMo 4 , 42MnCr 62 V, 15CrMoG.

[0058] 2. Determine the initial values ​​of elements and components required by each steel grade

[0059] According to the product composition requirements, determine the main elements that nee...

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Abstract

The invention provides a preparation method of a spectral analysis standard sample, and the preparation method comprises the steps of sieving the steel class, confirming the element and the initial value of the steel class, preparing the standard sample, testing the uniformity, analyzing the constant value and confirming the standard value, identifying, packaging and making certificate, scrutinizing the stability, and contrasting the standard steel. The invention has the advantages that the analyzing speed can be improved by using the standard steel, the duration of heat is saved, and the benefit is quite impressive. The problem of on-line analysis of the five harmful elements can be solved, and the smelting is monitored in real time, to stop the situation of scrap steel or steel class changing caused by the over limited five harmful elements happening. A piece of standard steel can control the major elements and the residual elements, monitor the five harmful elements and the acid-soluble aluminium in the liquid steel in real time, without the analyzing time increased. The method can be popularized, and the spectral analysis controlling standard steel is necessary for the prior steel-making corporation. By using continuous casting semi finished metal to develop the spectral analysis controlling standard steel, the process is simplified, and the developing cost is reduced.

Description

technical field [0001] The invention relates to a method for preparing a standard sample block for spectral analysis in steelmaking and tube rolling production testing. Background technique [0002] Photoelectric direct reading spectroscopic analysis occupies an important position in modern metallurgical analysis and testing technology. It is an accurate and fast chemical composition analysis method. Generally, it only takes 2-3 minutes to report the analysis results. However, it is a relative analysis method, and the standard steel with known composition content must be used as a reference in order to obtain fast and accurate analysis results. There are two types of standard steel for direct reading spectral analysis. One is standard steel for establishing instrument calibration curves (also known as working curves). Control standard steel for smelting or rolling process analysis. It is difficult to buy suitable control standard steel, because the control standard steel i...

Claims

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Application Information

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IPC IPC(8): G01N21/25G06F17/00G01N1/28
Inventor 郑建华付继成牛红军龚宜勇邱峰
Owner TIANJIN PIPE GROUP CORP
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