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Method for detecting phosphorus element in phosphating film of phosphating galvanized steel sheet

A technology of galvanized steel sheet and phosphorus element, applied in the field of detection, can solve the problems of many types of chemicals, large environmental impact, complicated steps, etc., and achieve the effects of rapid detection, high sensitivity and simple preparation method

Pending Publication Date: 2022-05-17
BENGANG STEEL PLATES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional detection method of phosphorus in phosphating film adopts colorimetric method, the steps are complicated, and there are many kinds of chemicals used, which takes a long time and has a great impact on the environment

Method used

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  • Method for detecting phosphorus element in phosphating film of phosphating galvanized steel sheet
  • Method for detecting phosphorus element in phosphating film of phosphating galvanized steel sheet
  • Method for detecting phosphorus element in phosphating film of phosphating galvanized steel sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for detecting phosphorus in phosphating coatings on phosphating galvanized steel sheets, comprising the following process steps:

[0039] 1.1 Sample preparation

[0040] Take the DC06E+Z galvanized steel plate and cut it into a square with a side length of 2cm. The surface is cleaned with alcohol, and weighed after drying. The weight is m 1 Put the weighed sample into a 100mL beaker, add 5mL of chromium trioxide solution (1%, prepared with distilled water), immerse the sample in the solution completely, count for 15min, take the sample out of the solution, and rinse the surface of the sample with distilled water , combine the flushing solution into the chromium trioxide solution used for immersion. Dry the sample with a hair dryer, weigh the sample after drying, and the weight is m 2 . Transfer the solution in the beaker to a 100mL volumetric flask, make up to volume with distilled water, and mix well. This solution is the solution to be tested.

[0041] 1...

Embodiment 2

[0054] 2.1 Sample preparation

[0055]Take the DC01E+Z galvanized steel plate and cut it into a square with a side length of 2cm. Clean the surface with alcohol and weigh it after drying. The weight is m 1 Put the weighed sample into a 100mL beaker, add 5mL of chromium trioxide solution (1%, prepared with distilled water), immerse the sample in the solution completely, count for 15min, take the sample out of the solution, and rinse the surface of the sample with distilled water , combine the flushing solution into the chromium trioxide solution used for immersion. Dry the sample with a hair dryer, weigh the sample after drying, and the weight is m 2 . Transfer the solution in the beaker to a 100mL volumetric flask, make up to volume with distilled water, and mix well. This solution is the solution to be tested.

[0056] 2.2 Sample detection

[0057] The solution to be tested was detected by an inductively coupled plasma atomic emission spectrometer.

[0058] First use an...

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Abstract

The invention relates to a method for detecting phosphorus in a phosphating film of a phosphating galvanized steel sheet, and belongs to the field of detection. The invention discloses a method for detecting phosphorus in a phosphating film of a phosphating galvanized steel sheet. The method comprises the following process steps: determining the weight m1 of a to-be-detected sample of the dried phosphating galvanized steel sheet; the method comprises the following steps: completely immersing a to-be-detected sample into a chromium trioxide solution with the concentration of 1% for 15 minutes, taking out, washing with water, drying, and determining the weight m2 of the dried sample; merging the flushing liquid into the chromium trioxide solution, and fixing the volume to obtain a solution to be detected; drawing a standard solution curve; and detecting the to-be-detected solution obtained in the step 1 by using an inductively coupled plasma atomic emission spectrometer, and obtaining the content of the phosphorus element in the to-be-detected solution according to the standard solution curve obtained in the step 2. The method for determining the content of the phosphorus element in the phosphating film of the phosphating galvanized steel sheet is simple and easy to implement. The inductively coupled plasma atomic emission spectrometer is rapid in detection, high in sensitivity and high in detection efficiency, and completely meets production requirements.

Description

technical field [0001] The invention relates to a method for detecting phosphorus element in a phosphating film of a phosphating galvanized steel sheet, belonging to the field of detection. Background technique [0002] The main function of phosphating galvanized steel phosphating film is to provide protection for the base metal and prevent the metal from being corroded to a certain extent. It is mostly used as a primer before painting to improve the adhesion and corrosion resistance of the paint film layer. The quality of the phosphating film is directly related to the performance of the final product. Generally, steel manufacturers and automobile OEMs will evaluate the quality of the phosphating film of phosphating galvanized products. One of the indicators is the phosphorus in the phosphating film. Assessment of elemental content. The traditional detection method of phosphorus in phosphating film adopts colorimetric method, the steps are complicated, and there are many k...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N21/01
CPCG01N21/73G01N21/01
Inventor 牟英华王亚朋岳永强王伟张鲁宁孟宪涛李明明胡维铸武斌唐语王亚芬郭晶
Owner BENGANG STEEL PLATES
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