Method for detecting element enrichment on surface of plate steel base material

A technology for the surface of a substrate and a plate is applied in the field of detecting the enrichment of elements on the surface of a steel substrate of a plate, which can solve the problem that the enrichment of surface elements cannot be accurately detected, and achieve the effect of simple measurement method and accurate numerical value.

Pending Publication Date: 2021-09-07
TANGSHAN IRON & STEEL GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for detecting the enrichment of elements on the surface of the steel base material of the ste

Method used

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  • Method for detecting element enrichment on surface of plate steel base material
  • Method for detecting element enrichment on surface of plate steel base material
  • Method for detecting element enrichment on surface of plate steel base material

Examples

Experimental program
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Example

[0020] Example 1-4

[0021] Examples 1-4 illustrate the method of the present invention by taking galvanized sheet, aluminum-coated sheet, and galvanized magnesium-aluminum sheet as examples, but this method is applicable to steel sheets with other coatings. The produced test plate is made into a disc with a diameter of 60mm-100mm (it can also be made into a square sample with a side length of 60mm-100mm). Before testing, the surface coating of the plate sample is dissolved and removed by chemical reagents. The dosage of hexamethylenetetramine and concentrated hydrochloric acid is shown in Table 1. After the preparation of the chemical reagents is completed, put the plate sample into the prepared chemical reagent for dissolving the coating. When the bubbles on the surface of the sample disappear during the dissolution process, immediately put the sample Take it out from the reagent, rinse the surface of the sample with a large amount of alcohol, and immediately dry the liquid ...

Example

[0023] Comparative example 1-3

[0024] In Comparative Examples 1-3, disc samples with a diameter of 60mm-100mm were prepared on the test plates used in Examples 1, 3, and 4, and the coating was not removed by chemical reagents, and the steel substrate of the steel plate sample was directly detected by a glow spectrometer. The element concentration on the surface of the material is obtained to obtain the corresponding relationship between the element concentration of the sample and the detection depth. The detection process of the glow spectrometer is the same as that of Examples 1-4.

[0025] Table 1

[0026]

[0027] attached figure 1 -6 is the detection result of the element concentration on the surface of the steel plate base material of Examples 1, 3, 4 and Comparative Example 1-3. In the drawings, the abscissa is the depth, that is, the distance from the surface of the steel plate and steel substrate along the detection depth direction. In the accompanying drawing...

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Abstract

The invention discloses a method for detecting element enrichment on the surface of a plate steel base material, which comprises the following steps of detecting the content of alloy elements in the plate steel base material by using a glow spectrometer, and dissolving and removing a plating on the surface of a plate sample by using a chemical reagent before detection. The obtained enrichment rule of elements such as silicon and manganese on the surface of the steel base material of the galvanized/aluminized/galvanized aluminum-magnesium plate can reflect the enrichment state of elements such as silicon and manganese on the surface of the base material before the galvanized/aluminized/galvanized aluminum-magnesium plate is galvanized, the measurement method is simple, convenient and rapid, and the measured numerical value is accurate.

Description

technical field [0001] The invention belongs to the technical field of steel plate surface analysis, and in particular relates to a method for detecting element enrichment on the surface of a steel plate substrate. Background technique [0002] The enrichment of elements such as silicon and manganese on the surface of the annealed sheet will affect the coating scratch resistance, coatability, adhesion and other properties of the galvanized sheet. Therefore, how to detect the enrichment of elements such as silicon and manganese on the surface of the steel substrate of the galvanized sheet is very important. [0003] Some literatures only mention that the enrichment of silicon-manganese and other elements on the surface of dual-phase steel such as dew point, oxygen content, and hydrogen content have certain influences, and affect the coatability of the zinc layer of galvanized steel sheet, but they do not provide specific information on the effect of coating on the finished co...

Claims

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Application Information

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IPC IPC(8): G01N21/67G01N1/34C23G1/08
CPCG01N21/67G01N1/34C23G1/08
Inventor 孟凡月齐建群张靖雨李涛许晓张静吕浩赵光杨峰
Owner TANGSHAN IRON & STEEL GROUP
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