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Determination method of iron content in coating of alloying hot galvanized plate

A hot-dip galvanized sheet and alloying technology, applied in thermal excitation analysis, material excitation analysis, etc., can solve the problems of low precision and long iron content detection cycle, and achieve high accuracy, fast analysis speed, and reliable analysis data. Effect

Inactive Publication Date: 2013-10-02
SHOUGANG CORPORATION
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for measuring the iron content in the coating of an alloyed hot-dip galvanized sheet, which solves the technical problems of long detection period and low precision of the iron content in the coating in the prior art

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  • Determination method of iron content in coating of alloying hot galvanized plate
  • Determination method of iron content in coating of alloying hot galvanized plate

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Embodiment Construction

[0029] see figure 1 , a method for determining the iron content in the coating of galvanized alloyed steel sheet provided by the embodiment of the present invention uses an ICP6300 inductively coupled plasma emission spectrometer from Thermo Company of the United States, and iTEVA software (version 2.8.0.89). According to the characteristics of the sample, the setting parameters of the inductively coupled plasma emission spectrometer are determined as follows: RF high-frequency generator power 1150W, pump speed 50rpm, auxiliary gas flow 0.5L / min, flushing pump speed 50rpm, vertical observation height 15mm. The analysis wavelength used by the inductively coupled plasma atomic emission spectrometer for the standard Fe element is 259.94nm, and the number of poles is 130.

[0030] Step 101: Prepare stripping solution and prepare for analysis

[0031] Reagent preparation:

[0032] Prepare 1000ug / ml iron standard solution, hydrochloric acid with a density of 1.19g / ml, hexamethylen...

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Abstract

The invention discloses a determination method of the iron content in a coating of an alloying hot galvanized plate and belongs to the technical field of detection of alloying galvanized plates. The determination method comprises the steps of: leading a volumetric flask of a standard stock solution into inductively coupled plasma emission spectrum equipment, and drawing a standard solution working curve for forming Fe; placing an alloying hot galvanized plate coating sample into a stripping device, and pouring 50ml of stripping liquid into the stripping device to dissolve the coating until bubbles disappear completely; pouring the reacted stripping liquid into the volumetric flask, and adding ultrapure water for constant volume being 100ml to obtain a sample to be tested; leading the sample to be tested into the inductively coupled plasma emission spectrum equipment for determination, so as to obtain the iron content in the coating of the alloying hot galvanized plate through the calculation of the inductively coupled plasma emission spectrum equipment. The determination method is high in analysis speed and accuracy, the linear correlation coefficient of the tested sample and the standard working curve is greater than 0.999, and reliable analysis data can be provided quickly.

Description

technical field [0001] The invention belongs to the technical field of detection of alloyed galvanized sheets, and in particular relates to a method for measuring iron content in coatings of alloyed galvanized sheets. Background technique [0002] Zinc-iron alloyed hot-dip galvanized sheet is to heat the steel sheet after hot-dip galvanizing, keep it warm for a certain period of time, and form an alloy with an iron content of 8-11% on the surface of the steel sheet through the mutual diffusion of iron in the substrate and zinc in the coating. Layer is a new type of material developed in the world in recent years. It has excellent corrosion resistance, good welding performance, formability and paintability, and is widely used in the automotive industry. For a long time, chemical analysis has been used for the inspection of iron in zinc-iron alloyed hot-dip galvanized sheets. Although the inspection results can also meet the accuracy requirements, there are many chemical anal...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71
Inventor 张有为乔建军闻达任君茹
Owner SHOUGANG CORPORATION
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