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A Sampling Method for Accurately Testing the Properties of Magnesium Oxide Coatings on Silicon Steel

A magnesia and silicon steel technology, applied in the field of strip steel coating, which can solve the problems of magnesia powder falling off or scraping off, inaccurate magnesia coating amount and moisture content testing, etc.

Inactive Publication Date: 2016-01-20
武汉钢铁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, due to the particularity of the magnesium oxide coating, which is attached to the surface of the steel strip in a powder state, it is inevitable that the magnesium oxide coating and the Contact with other equipment or hands will cause the magnesium oxide powder on the surface to fall off or be scraped off, which will directly cause inaccurate testing of magnesium oxide coating amount and moisture content

Method used

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  • A Sampling Method for Accurately Testing the Properties of Magnesium Oxide Coatings on Silicon Steel
  • A Sampling Method for Accurately Testing the Properties of Magnesium Oxide Coatings on Silicon Steel
  • A Sampling Method for Accurately Testing the Properties of Magnesium Oxide Coatings on Silicon Steel

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Embodiment 1

[0030] Such as figure 1 with figure 2 Shown, the present invention provides a kind of sampling method that is used for accurately testing silicon steel magnesia coating performance, and it comprises the following steps:

[0031] 1) Before the silicon steel plate 40 enters the coating machine, a certain area 60 of the silicon steel plate 40 is punched, and the area 60 of the silicon steel plate 40 obtained after part of the steel plate 50 is washed away is divided into a plurality of steel plates 10 to be tested , each steel plate 10 to be tested is connected to the surrounding adjacent steel plates to be tested by a connecting plate 20 to form a whole steel plate to be tested 100 (such as figure 2 shown);

[0032] 2) Carrying out indentation 30 on multiple connecting plates 20;

[0033] 3) Send the steel plate 40 into the coating machine, and apply the magnesium oxide coating liquid to the surface of the silicon steel steel plate 40, that is, the entire surface of the ste...

Embodiment 2

[0039] Such as image 3 As shown, this embodiment is roughly the same as Embodiment 1, except that the shape of each steel plate to be tested is circular. The periphery of each steel plate to be tested is connected with three connecting plates, and an included angle of 120 degrees is formed between two adjacent connecting plates.

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Abstract

The present invention provides a sampling method for accurately testing the performance of silicon steel oxide coating. It includes the following steps: 1) Pulling a piece of area of a silicon steel plate before the silicon steel plate enters the coating machineThe area of the silicon steel plate obtained is divided into multiple steel plates to be tested. Each to be tested and tested by the surrounding tested steel plate to connect through the connection plate;Send the silicon steel steel plate to the coating machine, apply magnesium oxide coating to the surface of the silicon steel plate, that is, the surface of the steel plate is also applied to the surface of the steel plate, which is also coated with magnesium magnesium.Silicon steel steel plates are sent to dry furnace drying; 5) The steel plate to be tested along the connection plate indentation is used to test the amount of magnesium oxide coating and water content test.The present invention is conducive to the accurate monitoring of the coating quality of magnesium oxide and the consumption of magnesium oxide raw materials at the production site, and provides guarantee for the stable production of Silicon Steel.

Description

technical field [0001] The invention belongs to the field of steel strip coating, in particular to a sampling method for accurately testing the performance of magnesia coating on oriented silicon steel. Background technique [0002] After decarburization annealing of grain-oriented silicon steel, the surface of the steel strip forms a dense and uniform SiO 2 and Fe 2 SiO 4 The thin film oxide layer as the main component is then coated with magnesia coating liquid on the surface of oriented silicon steel and dried, and rolled into steel coils to enter the high-temperature annealing furnace process. Under high temperature conditions, the magnesium oxide coated on the surface of the steel plate undergoes a solid phase diffusion reaction with the thin film oxide layer to form magnesium silicate Mg 2 SiO 4 Bottom layer of glass film. The magnesium silicate glass film bottom layer can prevent the steel plate from sticking and play a role in purifying the steel, while the glas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/04
Inventor 张刚梁宗仁骆忠汉胡守天杨皓蒋杰田文洲陶利法锐彭冰
Owner 武汉钢铁有限公司
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