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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the frequency of standard sample replacement increases, which is not conducive to the cooperation of fast-paced production in front of the furnace, and can no longer meet the needs of fast-paced production in front of the furnace.

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

Embodiment 1

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

[0036] 1. Chemical composition selection:

[0037] The elemental composition range of the calibration sample should meet the requirements of the analysis and control of the AOD furnace refining period samples and product samples in front of the furnace. Referring to the 304 product standard, the molten steel in the furnace with the appropriate composition is selected during AOD furnace smelting, and the basis for selection is to select according to the composition range requirements shown in Table 1 below.

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

[0039] the element

C

Si

mn

P

S

content

0.03-0.06

0.30-0.65

0.30-1.50

≤0.035

≤0.010

the element

Cr

Ni

Cu

Mo

TA

content

16.50-17.50

7.50-8.50

≤0.50

≤0.30

≤0.10 ...

Embodiment 2

[0091] This embodiment adopts the method of preparing the standard sample of heat-resistant stainless steel TP310 in 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, and the second embodiment increases the elements of Ti, N, Co and Nb.

[0092] The standard composition of the heat-resistant stainless steel TP310 is as follows in Table 10:

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

[0094] the 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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