Method for detecting chemical components of quenched plate

A detection method and technology of chemical composition, applied in the fields of electrical excitation analysis, material excitation analysis, preparation of test samples, etc., can solve problems such as troublesome analysis and research work, inaccuracy, avoid adverse effects, reduce data distortion, The effect of analyzing the results accurately

Pending Publication Date: 2021-12-31
TANGSHAN IRON & STEEL GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of the oxide layer and the high hardness of the quenched plate, the C and B elements in the spectral analysis results are often inaccurate, which brings great troubles to daily analysis and research work

Method used

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  • Method for detecting chemical components of quenched plate
  • Method for detecting chemical components of quenched plate
  • Method for detecting chemical components of quenched plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present embodiment selects 3 sample pieces that the trade mark is 34MnB5, and the numbering of 3 sample pieces is sample 1, sample 2, sample 3 successively, then carry out following operations:

[0029] (1) Sample 2 and sample 3 were quenched under the same conditions, the heating temperature was 900°C, the holding time was 5 minutes, and water was used as the quenching medium; sample 1 was not treated.

[0030] (2) Preparation of erosion solution: first add 150ml of deionized water to a 300ml beaker, then slowly add 40ml of concentrated hydrochloric acid, 3ml of concentrated sulfuric acid, 1g of sodium lauryl sulfate, and finally add 1ml of hydrogen peroxide, mix well, and set aside .

[0031] (3) Erosion of the oxide layer on the surface of the quenching plate: immerse sample 2 in the etching solution, heat it at a low temperature on an electric heating plate until the temperature of the etching solution is 40°C, and then erode for 300 seconds. After taking it out...

Embodiment 2

[0039] The present embodiment selects 3 sample pieces that the trade mark is 34MnB5, and the numbering of 3 sample pieces is sample 1, sample 2, sample 3 successively, then carry out following operations:

[0040] (1) Perform quenching treatment on samples 2 and 3 under the same conditions, the heating temperature is 900°C, the holding time is 5 minutes, and water is used as the quenching medium; sample 1 is not treated.

[0041] (2) Preparation of erosion solution: first add 150ml of deionized water to a 300ml beaker, then slowly add 50ml of concentrated hydrochloric acid, 5ml of concentrated sulfuric acid, 1.5g of sodium lauryl sulfate, and finally add 2ml of hydrogen peroxide, mix well, wait use.

[0042] (3) Erosion of the oxide layer on the surface of the quenching plate: immerse sample 2 in the etching solution, heat it at a low temperature on an electric heating plate until the temperature of the etching solution is 50°C, and then erode for 240 seconds. After taking it ...

Embodiment 3

[0050] The present embodiment selects 3 sample pieces that the trade mark is 22MnB5, and the numbering of 3 sample pieces is sample 1, sample 2, sample 3 successively, then carry out following operations:

[0051] (1) Perform quenching treatment on samples 2 and 3 under the same conditions, the heating temperature is 900°C, the holding time is 5 minutes, and water is used as the quenching medium; sample 1 is not treated.

[0052] (2) Preparation of erosion solution: first add 150ml of deionized water to a 300ml beaker, then slowly add 60ml of concentrated hydrochloric acid, 6ml of concentrated sulfuric acid, 2g of sodium lauryl sulfate, and finally add 1ml of hydrogen peroxide, mix well, and set aside .

[0053](3) Erosion of the oxide layer on the surface of the quenching plate: immerse sample 2 in the etching solution, heat it at a low temperature on an electric heating plate until the temperature of the etching solution is 55°C, and then erode for 180 seconds. After taking ...

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Abstract

The invention belongs to the field of chemical component detection, and particularly relates to a method for detecting chemical components of a quenched plate. The method specifically comprises the following steps: (1) preparing an etchant; (2) eroding an oxide layer on the surface of the quenched plate; (3) polishing the quenching plate; (4) analyzing the quenched plate: analyzing the polished sample by using spark discharge atomic emission spectroscopy, repeatedly analyzing for three times at the same position, and observing the C element analysis result; if the three analysis results of the C element are sequentially increased, repeating the operation steps (2)-(3); if the three analysis results of the C element have no significant change, repeating the operation step (3); and if the three analysis results of the C element are sequentially reduced, replacing the point location to carry out spark spectrum analysis, and obtaining a detection result. The detection method provided by the invention can effectively solve the influence of the oxide layer on the C and B analysis results of the quenching plate, so that the analysis results are more accurate.

Description

technical field [0001] The invention belongs to the field of chemical composition detection, and in particular relates to a method for detecting the chemical composition of a quenching plate. Background technique [0002] The quenching process is a metal heat treatment process in which the metal workpiece is heated to an appropriate temperature and maintained for a period of time, and then enters the quenching medium for rapid cooling. In the steel processing technology, the hardness and wear resistance of the steel can be improved by quenching, and the high-strength quenched plate can be obtained after the steel plate is quenched. [0003] As an intermediate product or final product of steel heat treatment, the quenched plate will be oxidized by oxygen elements in the air during the heating and heat preservation process to form an oxide layer. The thickness of the oxide layer is related to the process technology. The chemical composition of the quenched plate is a key para...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/32G01N1/34G01N21/67
CPCG01N1/28G01N1/32G01N1/34G01N21/67
Inventor 赵江林郑迅燕韩鹏王显靳静冯晴晴孟凡月郑更新林佳
Owner TANGSHAN IRON & STEEL GROUP
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