Preparation method of standard spectrum sample

A spectral standard sample and standard sample technology, which is applied in the field of spectral standard sample preparation, can solve the problems of not being able to meet the requirements of fast production in front of the furnace, increasing the frequency of standard sample replacement, and unfavorable coordination, so as to achieve high practical value and reduce preparation costs. Cost, effect of increasing sample size

Active Publication Date: 2012-01-11
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the frequency of standard sample replacement increases, which is not conducive to the cooperation of fast-pa

Method used

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  • Preparation method of standard spectrum sample
  • Preparation method of standard spectrum sample
  • Preparation method of standard spectrum sample

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example one:

[0035] This embodiment is a preparation method of stainless steel 304 standard sample, and the steps are as follows:

[0036] 1. Chemical composition selection:

[0037] The element composition range of the calibration sample should meet the requirements of the refining period sample and product sample of the AOD furnace in front of the analysis and control furnace. According to the 304 product standard, the molten steel in the furnace with the appropriate composition is selected during the smelting of the AOD furnace. The selection basis is based on the composition range requirements shown in the following table 1.

[0038] Table 1: Chemical composition range table (%)

[0039] Element

[0040] 2. Standard sample preparation:

[0041] 2.1. Baking of the model:

[0042] After cleaning the refractory bricks and porcelain pipes used, bake them at a temperature of 800-1200°C for more than 30 minutes and cool naturally;

[0043] The inner diameter of the refractory br...

Example Embodiment

[0090] Embodiment two:

[0091] This embodiment adopts the method for preparing the standard sample of heat-resistant stainless steel TP310 by continuous casting, and the steps and equipment used are the same as those in the first embodiment. The difference between the second embodiment and the first embodiment is the difference in the content of chromium and nickel. At the same time, the second embodiment adds the elements of Ti, N, Co, and Nb.

[0092] The fixed value components of the standard sample of heat-resistant stainless steel TP310 are as follows:

[0093] Table 10: Fixed value data table (%)

[0094] Element

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Abstract

Belonging to the field of metallurgical sample detection, the invention relates to a preparation method of a standard spectrum sample. The method includes the processes of: component selection, preparation of a standard sample through a continuous casting middle ladle top pouring method, stability investigation and conclusion. The method is characterized in that the process of preparing the standard sample by the continuous casting middle ladle top pouring method comprises the steps of: model baking, sample model establishment, sample model pouring by the top pouring method, demolding, segmentation and surface treatment, physical property detection, surface treatment, chemical component uniformity test, and fixed value analysis. The standard sample prepared in the invention not only satisfies the standard sample requirements in terms of physical property, texture, component range and uniformity, but also has reduced preparation cost and increased sampling number. At least 200 pieces can be prepared every time, thus being over 20 times as many as a model casting sampling number. And the preparation number can satisfy the current production requirements. Thus, the standard sample preparation method of the invention boasts very high practical value.

Description

technical field [0001] The invention belongs to the detection field of metallurgical samples, and in particular relates to a method for preparing a spectral standard sample. Background technique [0002] Most of the calibration samples for instrumental analysis circulating in the market are rolled after smelting. Due to the difference in internal structure and heat treatment of rolled and die-cast samples, the results of instrumental analysis of some components are quite different. . [0003] The instrument calibration sample used in the traditional furnace smelting is preferably mold casting sampling. The traditional sample pouring sampling method currently used has a small number of preparations at one time, and pores and inclusions are easy to form in the sample block. The success rate is only 50%. Only 3-5 pieces of usable standard samples can be obtained, and the composition deviation between samples is relatively large. As a result, the frequency of standard sample r...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 张存贵魏绪俭王烽任维萍王鹏李爱华王惠萍
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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