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Method and apparatus for detecting electrical steel surface coating

A technology of surface coating and detection method, which is applied in color/spectral characteristic measurement, absorption/scintillation/reflection spectrum, spectrum investigation, etc., which can solve the problems of random judgment and difficulty in making accurate ratings, etc.

Inactive Publication Date: 2005-05-25
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above methods are all rated by visual inspection. The accuracy of the rating varies with different people, different environments and other factors. It is difficult to make an accurate rating. The judgment is random and there are no specific quantitative indicators.

Method used

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  • Method and apparatus for detecting electrical steel surface coating
  • Method and apparatus for detecting electrical steel surface coating
  • Method and apparatus for detecting electrical steel surface coating

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Example 1, see figure 1 , figure 2 , a detection method for electrical steel surface coatings, comprising the following steps:

[0016] (1) Paste adhesive tape on the surface of the electrical steel sample, bend and restore the sample as required, and peel off the adhesive tape from the sample;

[0017] (2) Put the adhesive tape peeled off from the sample on the sample holder, adopt the spectrophotometric measurement method, directly obtain the absorbance after irradiating the adhesive tape with monochromatic light;

[0018] (3) The absorbance is converted into an electrical signal through the photocell, and input to the preamplifier, and the output of the preamplifier is input to the central processing unit CPU after the address / data conversion circuit, and compared with the reference data stored in the memory, Obtain the result of sample coating adhesion, output via monitor or printer.

Embodiment 2

[0019] Example 2, see figure 1 , figure 2 , the detection method of electrical steel surface coating, comprises the following steps, and step (1), step (3) are identical with embodiment 1, and step (2) comprises: light source 1 obtains monochrome spot after primary optical filter 2, monochrome The colored spot is irradiated on the adhesive tape installed on the sample holder 3, and the light spot passing through the adhesive tape passes through the condenser lens 4 and then passes through the narrow-band filter 5 to form absorbance, which is received by the photoelectric tube 6, and the optical signal of the absorbance is converted into an electrical signal.

[0020] The detection device for the surface coating of electrical steel in Example 1 includes an optical device and an electrical device. The optical device is an existing spectrophotometer, so the cost is low, but because the monochromatic light produced by the existing spectrophotometer is a very narrow light band, a...

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Abstract

The invention relates to a method and a device for detecting the physical properties of metal surfaces, in particular to a method and a device for detecting the surface coating of electrical steel. The invention adopts the principle of spectrophotometry to measure the adhesion of the electrical steel surface coating. Spectrophotometer or optical device is used for detection, which avoids human errors, and converts the optical signal of absorbance (transmittance) into an electrical signal. After the data is processed by the computer, the absorbance is converted into coating adhesion, and The results can be judged and can be displayed or printed out.

Description

technical field [0001] The invention relates to a method and a device for detecting the physical properties of metal surfaces, in particular to a method and a device for detecting the surface coating of electrical steel. technical background [0002] Electrical steel is mainly used as the iron core of various motors and transformers, and is an indispensable soft magnetic alloy in electric power, electronics and military industries. In the electrical steel manufacturing process, the surface of the product should be coated with an insulating film coating. The quality of the coating will affect important indicators such as the punching property, weldability, interlayer resistance, corrosion resistance, and appearance of the electrical steel. Therefore, the quality of the coating Adhesion is the release standard of products and one of the most important indicators of electrical steel. The existing national standard GB / T2552-88 stipulates the measurement method for the adhesion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/42G01N21/25
Inventor 褚富山王君详
Owner BAOSHAN IRON & STEEL CO LTD
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